British patents listed by Patentee

When a patent application was received it was given a filing number, until the start of 1916 this number was the number by which the patent was known. Each year the number sequence started again from 1, so to identify a patent the number and year of filing is needed. The highest number reached in any year was 31000. From 1916 the system was changed, the patent number (known as the serial number) was issued at the end of the process and ran contiguously starting at 100,001 and did not re-set each year. When a patent was filed it was still given a filing or application number which did re-start from 1 each year. Between the initial filing or application and the final granting of the patent the filing number may be used to identify the patent. So a number lower than 100,000 may be a patent issued before 1916 or a filing number issued from 1916. Prior to 1852 patent numbers ran contiguously rather than per year and were the filing number.

There are several dates associated with a patent: Initial filing, often a provisional specification would be submitted at this time and a filing number would be allocated; Full Specification provided, generally 6 to 12 months following the initial filing; Patent Published, the serial number is issued (from 1916), generally 15 - 24 months from initial filing. Under the Paris Convention of 1883 foreign patents can use the original date of filing in their own country. These are identified with words like "date claimed under convention".

The modern representation of a patent number is GB999999[yyyy], in earlier years there was no recognised format though 9999/yy is common. Before 1916 the year given is the date of initial filing, after this, the date used is generally the date of publication.

Unlike in many countries, in Britain there was no check made by the patent office for novelty or originality, it was not until around 1905 - 1907 that an examiner made such checks.

Prior to 1919 British patents lasted for 14 years from the time of initial filing, after this until recent times they lasted 16 years. For further information see Stephen van Dulken. "British Patents of Invention, 1617 - 1977. A Guide for Researchers"

The following is a list of patents referred to in the main text.

Acworth, Joseph John

38731901Describes a slide-rule actinometer.

Adams, Arthur Lewis

194801890Shutter. Used on the Adams Hand Camera.
202991890Changing boxes especially the use of sheaths to hold the plates. Found on Newman and Guardia and Adams cameras.
120291892Pneumatic delay cylinder where the initial position of the cylinder or piston is altered to vary the speed.
152921892Changing box. The plates are held in a hinged frame that tilts backwards to grip the front plate.
185951893Folding strut camera. Used on the original model Vesta.
91191894Brilliant view-finder having two lenses before the mirror.
130191896Changing box with a flexible bag where an incline at the front of the box lifts the plates enabling the front plate to be gripped when changing plates.
90571898Five sided prism used as a view-finder giving non-reversed image.
234311901Changing box with a bag, tambour shutter and lever to raise the plate.
116701905View-finder connected to the rising front.
182601906Four-way swing front.
24851907Focal-plane shutter.
36301908Describes the Vesta.
258491908Reflex camera.
215881909Reflex cameras.
276671909Reflex cameras with a mask to show position of revolving back.
55231912Describes a folding reflex camera. Used on the Folding Minex.
194061912Reflex camera.
175301913Swing or tilting front to a studio camera.
250371913Extending focusing rack for use with reflex cameras.
66441915Front standard of a folding hand camera. Used on the Vaido.

Adox Kamerwerk G M B H

7890211955Photographic cameras.

Aeronautical & General Instruments

8204131959Describes the shutter release and film-advance mechanism of the Agimatic.

Aldis, Hugh Lancelot

166401895The Stigmatic lens.
51701901The Aldis Anastigmat lens.

Amalgamated Photographic Manufacturers Ltd

3248311929Roll-film camera. Used in the Rajar 6.
3304381929Use of a stencil to cut bellows.

Ansco Photoproducts Inc

2854941927Memo roll-film camera.

Arbeit, Ernst

23051903The Euryplan lens.

Arundel, S.D.

116151886Plate Box with corrugated grooves to hold the plates and flaps to lift out the plates.

Ashford, J.

5411887Tailboard camera where the bellows disengage from the front, the rear standard folds onto the baseboard and the front standard folds on top covering the focusing screen. Possibly used on a Ross stereo camera.
65081900Tripod with hinged section to close into a smaller space.

Atherton, Reginald Ignatius

1141731918Improvements in displaying composite photographs with an animated effect. This relates to photographs displayed in contact with a ruled screen. the specific improvement was to place the photograph in front of the screen and to incorporate an indentation in the mount to ensure contact between the screen and the photograph.

Atwater, John Larson

295991897Describes a detective camera where the plates are changed by inserting the hand into the camera.

Automatic Coil Winder & Electrical Equipment Co Ltd

4585461936Photoelectric exposure meters.
6259881949Photoelectric exposure meters.

Ballantine, Matthew

48311904Strut and front standard arrangement for a hand camera. Used on the Lizars De-Luxe cameras.

Ballantine, Robert

48311904Strut and front standard arrangement for a hand camera. Used on the Lizars De-Luxe cameras.

Batault, Emile

246471893Describes a folding hand camera that folds into a small space. Used on the Shew Featherweight.

Bausch & Lomb Optical Co

124421890Diaphragm shutter opening to a varying extent.
83531901Two-blade pivoted return shutter.
83581901Two-blade return shutter, rectilinear movement.
83601901Two-blade pivoted return shutter.

Beck, Conrad

81941892Printing frame.
98191892Changing mechanism for a detective camera. Used in the Frena.
98201892Shutter. Used in the Frena.
64891896Changing mechanism. Used in the Frena.
170061898View-finder. Use of a mask placed in the focal point of the front lens.
51201900Changing arrangement for folding hand cameras. Used on the Folding Frena range.
140221903Film pack device.
9921904Zambex envelopes and skeletons.
252371905Shutter. Used on the Beck Celverex.
271801906The Isostigmar lens.
146731908The Isostigmar lens.
1628291920Describes a pre-set device for an iris diaphragm.

Beck, Horace Courthope

170061898View-finder. Use of a mask placed in the focal point of the front lens.
252371905Shutter. Used on the Beck Celverex.
271801906The Isostigmar lens.
146731908The Isostigmar lens.

Beck, William

64891896Changing mechanism. Used in the Frena.
51201900Changing arrangement for folding hand cameras. Used on the Folding Frena range.

Beevor, Charles William

90571898Five sided prism used as a view-finder giving non-reversed image.

Bennett, A.

1066801916Plate holder used to produce composite photographs where a mask is moved between successive images.
1066811916Displaying and mounting composite photographs that use a mask.

Bennett, George Henry Phillip

6624071949Shirley Wellard re-loadable cassette.

Bettles, Arthur Edward

1903021921Reflex cameras and focal-plane shutters.

Billcliff, Joshua

139561885Rotating back.

Bing, Joseph Mina

3486621931Exposure meters, describes the arrangement of scales on an extinction meter. Refers to BP 214939/1924.

Bloch, Edmond

217551896Describes a binocular camera.

Boehm, Wilhelm

3342201929Magnesium ribbon holder combined in the same case as an exposure meter.

Booth, Lionel Barton

1397191919Dallon telephoto lens.
1515071919Dallon telephoto lens.

Boucher, Paul

121561912Actinometer where a small image of the subject is formed.

Bourdin, Gabriel Jules

31751864Covers the Dubroni.

Bourne, John Cooke

6741855Describes a combined camera and dark tent arrangement. The lens of the camera moves in a curved slot.

Branson, F.W.

16501883Flap/drop shutter. The flap is spring powered, the drop-plate is rubber-band powered.
27671884Flap/drop shutter. Flap speed controlled by weighted arm, the drop-plate is rubber-band powered.
11201885Describes a tailboard camera.
163731893Use of studs to attach front standard to inner frame. Frame strengthened by using racks of T, L or U section, the racks are cut diagonally to match spiral pinion to give less backlash when focusing.
141021899The front standard does not have a cross piece at the top of the forks, it is strengthened by angled struts on the front of the standard as well as the usual side struts.

Brauburger, Ernst

165931905Focal-plane shutter.

Brin, A.

171431891Brin camera.
60131892Developing and washing apparatus.

Britannia Works Co

176421892Exposure determining. Describes a circular slide-rule.

Brookes, Warwick

43201881Describes a twin lens camera, shutter and changing mechanism.
133401891Suction device for attaching an article to glass. Used on the Limpet finder.

Brooks, Arthur Augustus

118161908Daylight changing system.
250741908Daylight changing system.
253701908Determining when development is complete, used in the A-kla system.
105041912Describes a folding hand camera.

Brooks, John Boultbee

54541896Describes a shutter and general form of a box camera for plates. Used on the B.P. Criterion.

Brown, Frank Edwards

215051896Metal dark-slides with removable inner section, sold by B.J. Edwards. (The patentees traded as W. Edwards of the Steam Cabinet Case Works, Birmingham)

Brown, J.E.

24961885Method of clamping the front standard to the baseboard and clamping the rising front. Used on the 'Combination' camera from Shew and others.

Brownell, Frank Alexander

3591890Describes the Folding Kodak.
242691896Rotary shutter and general arrangement of the Pocket Kodak.
138301900Panoramic camera.
37991904Roll-film developing tank.
115851905Folding roll-film camera.

Buck, William James Henry

6624071949Shirley Wellard re-loadable cassette.

Burchett, Arthur

244871893Use of green and yellow screens to give better colour rendering. Based on BP 9926/92.

Bynoe, Frederick Oatley

81941892Printing frame.
140221903Film pack device.

Carkhuff, Norman W.

13271908Film developing tank. Films arranged in arcs around a common centre to fit a round tank.

Carl Zeiss

2036681922Albada view-finder.
2732741926The Tessar lens.
3698331930The Tessar lens.
4149921934Attaching a photographic camera or the like to an optical observation instrument (Microscope).

Carpentier, Jules

66311892Describes a camera and enlarging apparatus for a rigid hand camera.
11391901Relates to an enlarging camera adapted to correct distortion in negatives owing to their being out of the true plane when originally photographed.

Carter, Harry Arthur

2950711927Folding strut camera. Used in the Snapshot.

Casler, Herman

241571895Describes the Presto.

Chapman, J.T.

123891884Describes a folding bed camera with a double-slotted link connecting the baseboard and the back.

Chessher, Herbert George

121051909Roller-blind shutter. Self-capping with two blinds connected by tapes.

Christensen, Jens Herman

209711908Screens for colour photography.
210971908Screens for colour photography.

Clark, S.M.

68141888Twin lens camera with bayonet lens mount.

Clarke, Joseph Thacher

118911890Changing mechanism.
208521890Shutters and lens fittings.
98191892Changing mechanism for a detective camera. Used in the Frena.
98201892Shutter. Used in the Frena.
195811892Shutter.
233151892Use of notches in film packs to change film. The films have notches along two sides. When a film has been exposed pins in front of the film are slid to coincide with the notches and so release the film. The next film has notches in the alternate position and so is held in place by the pins. Used in the Frena.
25661893Improvements in changing boxes, and arrangement for a detachable box.
176851893Shutter.
64891896Changing mechanism. Used in the Frena.

Cole, J.

53741894A tambour front panel is used to give rising front, moved by rack and pinion.

Collins, T.J.

101031887Method of clamping the front standard to the baseboard.

Colordeau, Louis Joseph Emmanuel

230271913Stereoscopic camera for cine film. Used in the Homéos.

Coltman, Douglas Claud Wynn

5870901945Improvements in or relating to bezel stops for lenses.

Correx Müvek Filmipari Gepgyar Czako Laszlo

2015611923Correx film apron.

Croneen, Sidney

1141731918Improvements in displaying composite photographs with an animated effect. This relates to photographs displayed in contact with a ruled screen. the specific improvement was to place the photograph in front of the screen and to incorporate an indentation in the mount to ensure contact between the screen and the photograph.

Curtis, W.F.H.

3661894Swing and tilt to back arranged so that the axis of movement is co-incident with the sensitive plate.

Cusworth, C.

47181887Field camera with levers to clamp the front standard.

Dallmeyer Ltd

2950711927Folding strut camera. Used in the Snapshot.

Dallmeyer, Thomas Rudolphus

219331891Telephoto attachment fitting behind the prime lens.
247201899Telephoto attachment fitting in front of the prime lens.

Dawson, John William

168131900Describes the Dawson Densitometer.

Deckel, F.

275921912Diaphragm shutter with gear train to regulate the exposure. Used on the Compur.

Deckel, Friedrich

2754621926Diaphragm shutter. Used on rim-set Compur.

Deckel, Friedrich W.

7449621952Photographic shutters combined with exposure calculators.

Deckel, Hans

7449621952Photographic shutters combined with exposure calculators.

Decoudun, J.

133321887Describes a means of estimating the light by introducing varyingly translucent plates in front of the image on the ground glass screen.
115781888Actinometers. Relates to improvements to BP13332/1887.

Degen, Edouard

279861903Exposure meters. Describes Le Photometre Normal.

Denniss, Alfred Joseph

1655751920Body for a roll-film camera using sheet aluminium. Used in the Ensignette.
1948971922Roll-film hand camera. Used on the Ensign Cupid. Application no. GB19220004312. Specification published in 1923.
2076371922Improvements to shutters. Used on the Ensign Cupid. Application no. GB19220024360.
2105311922Reflex camera.
2107171922Reflex camera.
2664941925Reflex camera.
235001926Application number for GB281802.
2482741926Sliding lens mount between fixed stops for focusing.
2708231926General arrangement for a box camera with hinged body.
2711451926Reflex camera.
2711861926Positioning of the diaphragm behind a simple lens.
2803521926Pressure plate for roll-film cameras.
2818021926Hinged spool retaining spindle.
3457191930Improvements in catches or fasteners for the cases of cameras.
4157701933Improvements relating to rangefinders or telemeters for photographic cameras
155681934Relates to the Ensign Midget. Application number for GB436750.

Diebel, Otto

4103061933Shutter mechanism.
4144651933Roll-film cameras. Shutter mechanism.
5006261937Photographic cameras, shutters.
5007911938Photographic cameras. Claimed under the convention date: 1937.
5008661938Lens mounts for photographic cameras. Claimed under the convention date: 1937.
5073141939Reflex photographic cameras; lenses.

Dockree, Walter

2105311922Reflex camera.
2107171922Reflex camera.
2664941925Reflex camera.
2711451926Reflex camera.

Drem Products Corp

3804301932Exposure meter for printing.

Driffield, V.C.

60131886Relates to a detective camera with one lens for focusing and another similar one for throwing the image on the sensitive plate.
55451888Exposure determining.

Dufay, Louis

116981908Screens for colour photography.
187441908Screens for colour photography.

Dye, William George

6624071949Shirley Wellard re-loadable cassette.

Eastman Photographic Materials Co

242691896Rotary shutter and general arrangement of the Pocket Kodak.
78801897Shutter with two pivoted blades.

Eastman, G.

155421884Roll-film holder.
69501888Roll-film detective camera.
98691889Shutter.
209511897Roll-film holder, the film being wound outside the backing paper.

Edwards, Valentine William

1948971922Roll-film hand camera. Used on the Ensign Cupid. Application no. GB19220004312. Specification published in 1923.
2076371922Improvements to shutters. Used on the Ensign Cupid. Application no. GB19220024360.
2664941925Reflex camera.
235001926Application number for GB281802.
2708231926General arrangement for a box camera with hinged body.
2711451926Reflex camera.
2803521926Pressure plate for roll-film cameras.
2818021926Hinged spool retaining spindle.
3457191930Improvements in catches or fasteners for the cases of cameras.
4157701933Improvements relating to rangefinders or telemeters for photographic cameras

Edwards, William

215051896Metal dark-slides with removable inner section, sold by B.J. Edwards. (The patentees traded as W. Edwards of the Steam Cabinet Case Works, Birmingham)

Edwards, William Albert

174081904Mostly covers the Tudor range of cameras but also shows the method of clamping the front standard to the focusing rack used on the Sanderson.
149161907Describes a spring operated rocking plate pivoted on one of the front standard struts that engages notches in a slide plate.
191081907Describes a mechanism that releases the catches to a reversing back by use of a central button. Used on Sanderson cameras.

Englisch, Emil

4103061933Shutter mechanism.
4144651933Roll-film cameras. Shutter mechanism.
5006261937Photographic cameras, shutters.
5007911938Photographic cameras. Claimed under the convention date: 1937.
5008661938Lens mounts for photographic cameras. Claimed under the convention date: 1937.
5073141939Reflex photographic cameras; lenses.

Foulkes Winks, Benjamin

194061912Reflex camera.

Franke, Paul

4975171938Film-advance mechanism and automatic film loading.

Franks, Louis Aubrey

130551890Shutter. Used on the Presto camera.

Frauenstein, Hugo

4103061933Shutter mechanism.
4144651933Roll-film cameras. Shutter mechanism.
5006261937Photographic cameras, shutters.
5007911938Photographic cameras. Claimed under the convention date: 1937.
5008661938Lens mounts for photographic cameras. Claimed under the convention date: 1937.
5073141939Reflex photographic cameras; lenses.

Frennet, Jules

284481908Folding reflex camera.

Furnell, T.

77461884Shutter.

Gaisman, Henry Jaques

90051914Original patent for what became Autographic film.
90061914Original patent covering cameras adapted to use Autographic film.

Gale, C.H.

30761888Field camera, the front forks have a slot within which the studs on the lens board can move for vertical adjustment. Centre swing and base tilt to back. Focusing pinion pushes into recess for storage. Sold by Marion as the Cyclone.

Gandolfi, S.

134491891Method of attaching the front standard to the baseboard.

Gaumont, L.

260681902Describes the Block Notes.

Geiger, Martin

2754621926Diaphragm shutter. Used on rim-set Compur.

Gerrard Industries Ltd

3793441931Arrangement of mirrors in a three-colour camera.

Giles, Walter Frederick

281741906Focal-plane shutter.
155481908Focal-plane shutter. Used on the Unit shutter. BP 22134/1904 is referenced. BJA 1909, p. 1193. (Advert.).

Gill, Bertram Thomas

3793441931Arrangement of mirrors in a three-colour camera.
3793451931Method of focusing all three images in a three colour camera at the same time.

Gimblett, John Archibald Linden

201871915The fluid in a developing tank is agitated by introducing air under slight pressure.

Goerz, Carl Paul

233781892The Double Anastigmat.
178441894Sector shutter.
214581894Improvements to the Double Anastigmat.
165931905Focal-plane shutter.
14681907Focal-plane shutter.
176241908Strut camera. Used on the Folding Pocket Tenax.
277721913Method of collapsing the front standard in a folding hand camera.

Gosling, Arthur Glendower

6143301948Photoelectric exposure meter, describes the Chum.

Gotz, J.R.

105941885The camera back is connected by short links to the slides running on the edge of the baseboard, this is arranged to provide a tilting back. Tilting front is also provided.
20421887The base of the back has a curved rack to provide a tilt movement.

Griffin & Sons

200881909Spring arrangement to attach supplementary lenses to a camera lens.

Griffiths, Walter

147531892The conventional baseboard is replaced by telescoping tubes. Illus. YBP 1894, p. 542.

Grubb, Thomas

25741857Improved achromat lens.

Guardia, J.

57421892Roller-blind shutter, rack and pinion setting arm and pneumatic regulation.
138571892Changing box, use of a pressure plate.
206491892Shutter, pneumatic regulation.

Guthe, Paul

1710241920Folding hand camera. Used on the Patent Etui camera.

Hainsworth, Frank

2711861926Positioning of the diaphragm behind a simple lens.

Hare, George

16991875Describes the Hare transfer box.
30351882Describes the '1882' pattern folding plate camera.

Harting, Carl August Hans

229621900Heliar lens.
134411902Heliar lens.

Hasselkus, John William

296371913The Xpres lens.

Heidecke, Rheinhold

4975171938Film-advance mechanism and automatic film loading.

Henry, L.C.V.

156571891Describes a strut camera where the lens board is pivoted between the struts and able to tilt. Rise is also possible. Incorporated in a Shew Eclipse model.

Hickox, Herbert Edward

54381901Describes a while-you-wait ferrotype camera.

Hill, Henry

120291892Pneumatic delay cylinder where the initial position of the cylinder or piston is altered to vary the speed.
185951893Folding strut camera. Used on the original model Vesta.
91191894Brilliant view-finder having two lenses before the mirror.

Hillman, Albert George

3793441931Arrangement of mirrors in a three-colour camera.
3793451931Method of focusing all three images in a three colour camera at the same time.

Hobson, H.W.

30191892Tapering the end of screw threads.

Holmes, Alfred William Robert

2708231926General arrangement for a box camera with hinged body.

Holmes, Herbert

7891896Method of connecting front standard to the camera baseboard for stereo use.
208601900Use of spring plate and studs to locate the front standard on the baseboard.
24421902Method of inserting and retaining film spools.
174081904Mostly covers the Tudor range of cameras but also shows the method of clamping the front standard to the focusing rack used on the Sanderson.
149161907Describes a spring operated rocking plate pivoted on one of the front standard struts that engages notches in a slide plate.
191081907Describes a mechanism that releases the catches to a reversing back by use of a central button. Used on Sanderson cameras.
274611910Mechanism for tensioning and releasing roller-blind shutter. Also applied to Focal-plane shutters.

Holmes, Leonard

7891896Method of connecting front standard to the camera baseboard for stereo use.

Holmes, Leonard Edwin

7891896Method of connecting front standard to the camera baseboard for stereo use.

Hora, Tudor Travers

163531906Focal-plane shutter especially the de-coupling of the blind rollers to adjust the slit.

Houghton, George

208601900Use of spring plate and studs to locate the front standard on the baseboard.
24421902Method of inserting and retaining film spools.

HoughtonButcher Manufacturing Co

1655751920Body for a roll-film camera using sheet aluminium. Used in the Ensignette.
1948971922Roll-film hand camera. Used on the Ensign Cupid. Application no. GB19220004312. Specification published in 1923.
2076371922Improvements to shutters. Used on the Ensign Cupid. Application no. GB19220024360.
2105311922Reflex camera.
2107171922Reflex camera.
2664941925Reflex camera.
235001926Application number for GB281802.
2482741926Sliding lens mount between fixed stops for focusing.
2708231926General arrangement for a box camera with hinged body.
2711451926Reflex camera.
2711861926Positioning of the diaphragm behind a simple lens.
2803521926Pressure plate for roll-film cameras.
2818021926Hinged spool retaining spindle.
3457191930Improvements in catches or fasteners for the cases of cameras.
4157701933Improvements relating to rangefinders or telemeters for photographic cameras
155681934Relates to the Ensign Midget. Application number for GB436750.
5216061938Photographic cameras, rangefinders.
5638751944Describes an auto-stop and film-advance mechanism.

Houghtons Ltd

174081904Mostly covers the Tudor range of cameras but also shows the method of clamping the front standard to the focusing rack used on the Sanderson.
199431906Printing frame were a pressure bar, operated by a screw, grips the paper to the negative.
149161907Describes a spring operated rocking plate pivoted on one of the front standard struts that engages notches in a slide plate.
191081907Describes a mechanism that releases the catches to a reversing back by use of a central button. Used on Sanderson cameras.
274611910Mechanism for tensioning and releasing roller-blind shutter. Also applied to Focal-plane shutters.
61211913Focal-plane shutter.

Howell, C.

159261900Rack and pinion used to raise the lens board. Howell was a partner in the Midland Camera Co.

Hunter, Douglas Gordon

5638751944Describes an auto-stop and film-advance mechanism.

Hunter, J.J.

18981884Swing and tilt adjustment using a cradle with curved surfaces attached to the baseboard. Used on the 'Patent Swing' studio camera.
160871884Describes a camera with the front and back standards moved by racks running each side of a single pinion. The patent was used on the 'Imperial' and an earlier model from S&H.
48081887Use of a slotted disc to set tilting back.

Hurter, F.

55451888Exposure determining.

Höegh, Emil von

233781892The Double Anastigmat.
214581894Improvements to the Double Anastigmat.

Ilford Ltd

199621905Exposure determining.

Isaacs, Frederick Myer

256551903Filter or supplementary lens attachment for box cameras.

Isaacs, Lewis Myer

256551903Filter or supplementary lens attachment for box cameras.

Isaacs, Myer Lewis

256551903Filter or supplementary lens attachment for box cameras.

Jackson, Alfred Charles

193291894Shutters, lenses and lens fittings. Used on falling plate cameras.
30551896Falling plate camera and shutter.
271021896Changing mechanisms, focusing etc. Used on falling plate cameras.
55641900Folding darkroom lamp.

Jeffrey, A.

9411892Describes a folding strut camera.

Jeyes, John William

152921892Changing box. The plates are held in a hinged frame that tilts backwards to grip the front plate.
130191896Changing box with a flexible bag where an incline at the front of the box lifts the plates enabling the front plate to be gripped when changing plates.

Joly, J.

141611894Colour photography.
179001897Ruling machine to produce screens used in the Joly colour photography process.

Jones, Alexander James

207681894Folding camera.

Jones, David Burne

1141731918Improvements in displaying composite photographs with an animated effect. This relates to photographs displayed in contact with a ruled screen. the specific improvement was to place the photograph in front of the screen and to incorporate an indentation in the mount to ensure contact between the screen and the photograph.

Kapella Ltd

3775371931Improvements in lenses. The Speed Panchro.
4613041935Improvements in lenses.
5870901945Improvements in or relating to bezel stops for lenses.

Kemper, A.C.

234871892Describes a small roll-film camera, shutter etc. Used on the Kombi.
25441895Describes the Kombi.

Kenngott, Wilhelm

17401905Diaphragm shutter. Used on friction brake Koilos.
40241907Diaphragm shutter. Used on Koilos with pneumatic delay.

Kershaw, Abram

226981904Reflex cameras, mirror movement and shutters.

Kershaw, Cecil

3248311929Roll-film camera. Used in the Rajar 6.

Kershaw, J.

107981891Roller-blind shutter. BP 5014/1885 is related.

Kershaw, Norman

3304381929Use of a stencil to cut bellows.

Kidd, R.L.

92861885Roll-holder

Koch, Conrad

4103061933Shutter mechanism.
4144651933Roll-film cameras. Shutter mechanism.
5006261937Photographic cameras, shutters.
5007911938Photographic cameras. Claimed under the convention date: 1937.
5008661938Lens mounts for photographic cameras. Claimed under the convention date: 1937.
5073141939Reflex photographic cameras; lenses.

Kodak Ltd

3591890Describes the Folding Kodak.
138301900Panoramic camera.
37991904Roll-film developing tank.
115851905Folding roll-film camera.
13271908Film developing tank. Films arranged in arcs around a common centre to fit a round tank.
116871908Leaf shutter
4403531936Rangefinder in a roll-film camera.
4541341936Means of adjusting and securing the film-plane.
4541441936Tongue and groove light seal between body parts.

Krügener, R.

15101888Book camera.

Lacroix, J.B.J.

102781891Falling plate camera.

Lancaster, W.J.

53631885Rotary shutter.
53641885Baseboard in three parts with pull-out section and second section moved by rack and pinion. Locking nut on pinion.
38791886Use of an iris diaphragm.
15331887Use of eccentric discs to clamp the dark-slides in place.
13651889Darkroom lamp.
16311889Curved slot on front standard forks to control tilt and collapsing of camera. Tilting back by clamping plates on the rear standard to short uprights running on the baseboard, these uprights (and therefore the whole back) are clamped to the baseboard by a screwed rod extending the width of camera. Bellows are made parallel for a short distance near the camera back. Used on the 'Extra Special' model.
181671889See-Saw shutter.
154951890Describes a detective camera. Used in the Rover.
58281893Method of clamping and collapsing front standard, tilting back arrangement. Used on the Imperial Instantograph. Dark-slide with hinged top to load plates.

Lawley, Walter

55981881Camera with provision for holding and changing plates internally by passing a hand through a light-tight sleeve.

Leber, Alois

4441051936Exposure meters - extinction. Describes the Leudi.

Lee, Horace William

3775371931Improvements in lenses. The Speed Panchro.
4613041935Improvements in lenses.

Leitz

2355601924Camera, shutter etc.
3712521932Rangefinder with moveable mirror or prism moved by the focusing movement of the camera lens.
3799541932Rangefinder coupling adjusted from the focusing mount of the camera lens through intermediate mechanism.
3832331932Interchangeable cam rings to connect lenses of different focal length to a rangefinder.
3839111932Film re-wind knob that can be pulled clear of obstructions on the top plate.
3868871933Use of a right-angle prism behind a rangefinder eye-piece so that viewing can be at right angles to the line of sight.
3868881933Angular view-finder, Wintu etc.
4128801934Escapement mechanism for slow shutter speeds.
4745091937Motor drive attachment.
4794531938Rapid film advance using a trigger and pulley.
5046061938Motor drive attachment.

Levi J & Co

256551903Filter or supplementary lens attachment for box cameras.

Levi, Samuel Joseph

207681894Folding camera.

Litchfield, Thomas

1246361918Describes a folding hand camera.

Lomax, Frank Sharp

3919531933Tube being one coil of a spring forming a lens hood.

Lowdon, G.

41021885Describes the Shew Eclipse.

Lumière et ses Fils

229881904Autochrome. This, the first Autochrome patent, proposed that the plate be coated with grains coloured red, yellow and blue, the plate was then again coated with a tacky layer followed by a second coating of grains of the same colour, these would overlap in places producing a screen of six colours - red, yellow, blue, orange, green and blue-violet.
257181904Autochrome. The second Autochrome patent proposed a single coating of grains but of multiple colours.
91001906Autochrome. The third Autochrome patent referred to the grains being flattened by rolling.

Lyons, G.

146481891Front standard is made detachable by using spring bolts on the forks. Two positions for the forks locked by a single pair of struts.

Lyth, E.J.

80541889Use of an extra large pinion wheel to adjust the focus. A folding handle rotates the pinion wheel, a sliding bolt locks the position.

Macadie, Hugh Sutherland

4585461936Photoelectric exposure meters.
6259881949Photoelectric exposure meters.

Mackenzie, Frederick

77511899Envelope adapter.
52121906Envelope adapter.

Magic Introduction Co

217271893Describes the Photoret.

Mallett, Walter

90571898Five sided prism used as a view-finder giving non-reversed image.

Mason, Percy George

87211912Describes the side struts of a folding hand camera. Used in the Sibyl range of cameras.
87221912Sector shutter. Used on the Sibyl camera.
1581941919Reflex cameras and focal-plane shutters. Used in the Folding Reflex.
1586011919Reflex cameras and lens fittings. Used in the Folding Reflex.

Mattioli, G.

114761890Two-blade pivoted return shutter.

Maugey, Pierre

8871858A thin membrane is used as a lens diaphragm.

Mayer, Emil

2149391924Exposure meters.
2168311924Exposure meter for printing.

Mayo, Alfred Croger

261581933Application number for the Purma camera.
4306481933Improvements in or relating to cameras with focal-plane shutters. Application no. GB19330026158, published in 1935.
4459071934Photographic roll-film cameras. Application no. GB19350007981.
79811935Application number for the Purma camera GB445907.
4731231936Improvements in or relating to photographic cameras with focal-plane shutters. Application no. GB19360003684.
4899601938Describes a shutter lock when the lens is retracted into the body of the camera. Application no. GB19370003606.
4899611938Describes the Purma shutter.
6423191950Covers film winding movement and connection to the shutter. Application no. GB19470016000.

McAlpine, George Leonard

200881909Spring arrangement to attach supplementary lenses to a camera lens.

McKellen, Samuel Dunseith

3191884Turntable in base of camera to dispense with the tripod top.
66881884Pivoting lens board enabling it to swing forward onto the baseboard whilst front standard swings backwards when collapsing the camera.
84631884Inner sliding frame on a field camera for focusing, the frame is moved by a rack and pinions at each end of the frame.
163341884Horizontal swing given to the back by pivoting it to plates that move along each edge of the baseboard.
79511886The dark-slides are held in position by wooden strips that are moveable to accommodate different sizes of dark-slide. The strips unscrew and can be placed for vertical or horizontal use.

McLaughlin, G.

97561886Use of a metal frame in place of the conventional baseboard, the sides of the frame can telescope for focusing. Arrangement for tilting back and swing front.

Metropolitan Vickers Electrical Ltd

5506311943Photoelectric exposure meters.

Miall, Frank

41311889Changing mechanism and shutter for a detective camera.
197701889Plate holders for use in changing boxes.

Middlemiss, W.

158871884Describes a field camera with two angle-plates sliding on the inner frame to which the front standard is pivoted.
54501886Development of patent 15887/1884, the front standard is held in place by pins that can pivot and be disengaged to collapse the camera. Advertised by Marion (YBP 1891).

Miller, Tom

126691890Falling plate camera mechanism.
22791891Describes a falling plate detective camera.

Moore, Harry Charles

93421912Describes a while-you-wait ferrotype camera.
2855431926Self-developing camera.

Morgan, W.T.

92861885Roll-holder

Multiscope and Film Co

218301904Describes a panoramic camera.

Nerrlich, Eugen Albrecht Richard

178441894Sector shutter.

Newman & Guardia

95991902Focal-plane shutter and mirror for a single lens reflex.
193631902Focal-plane shutter and mirror in a single-lens reflex.
252851903Reflex cameras. Used on the Square Reflector.
168571905Folding hand camera especially the view-finder. Used on the Sibyl camera.
87211912Describes the side struts of a folding hand camera. Used in the Sibyl range of cameras.
87221912Sector shutter. Used on the Sibyl camera.
1581941919Reflex cameras and focal-plane shutters. Used in the Folding Reflex.
1586011919Reflex cameras and lens fittings. Used in the Folding Reflex.
1836261921Hood for a rear focusing screen.
1822371922Tripod that folds into a walking stick.
2713301926Shutter, two blade pivoted return type. Used on the Sibyl Vitesse and Excelsior cameras.
2900231927Hinged back to a roll-film camera. Used on the Sibyl Excelsior camera.

Newman & Sinclair

200161910Shutters and reflex cameras.
138201912Leaf shutter.

Newman, Arthur Samuel

71561886Pneumatic shutter. Used on the early Newman shutter (fitting in the diaphragm slot of e.g. field cameras).
83291886Changing box where the exposed plate is raised by a crank lever in the bottom of the box.
192741890Shutters, pneumatic regulation. Patent refused.
194801890Shutter. Used on the Adams Hand Camera.
202991890Changing boxes especially the use of sheaths to hold the plates. Found on Newman and Guardia and Adams cameras.
57421892Roller-blind shutter, rack and pinion setting arm and pneumatic regulation.
138571892Changing box, use of a pressure plate.
206491892Shutter, pneumatic regulation.
95991902Focal-plane shutter and mirror for a single lens reflex.
193631902Focal-plane shutter and mirror in a single-lens reflex.
252851903Reflex cameras. Used on the Square Reflector.
168571905Folding hand camera especially the view-finder. Used on the Sibyl camera.
200161910Shutters and reflex cameras.
138201912Leaf shutter.

Newton & Wright

1246361918Describes a folding hand camera.

Nièll, Magnus

215101899Describes a folding camera. Used in the Pocket Cyko.
243501901Describes a folding hand camera.
212951904Describes the Ticka.
284641907Describes a roll-film strut camera. Used in the Ensignette.
144891908Fitting of roll-film spools
1173991917Describes a folding strut camera. Used in the Ensign Midget.

North, C.G.

185421888The focusing pinion has reduced sections so that when these are moved over the rack it is out of gear.

O'Reilly, Walter

108231888Describes a small rigid hand camera and changing method. Used in the Demon.

Optische Anstalt CP Goerz AG

2206151923General arrangement for a box camera.

Ostermeier, Johannes

3245781930Flash bulb, used in the Sashalite. See also: Ostermeier, BP 357239/1931; Hauser & Co. BP 368383/1932, BP 368531/1932.

Park, Henry

113861885Dovetailed wedge-shaped fitting on the camera to fit tripod top.
142621886Describes a conventional field camera with an inner moveable frame on which the front standard is mounted.

Parkinson, H.C.

41101896Describes a monorail.

Parr, Bernard Arthur

5216061938Photographic cameras, rangefinders.

Peacock, John Atkins

2713301926Shutter, two blade pivoted return type. Used on the Sibyl Vitesse and Excelsior cameras.
2900231927Hinged back to a roll-film camera. Used on the Sibyl Excelsior camera.

Peacock, Thomas

1836261921Hood for a rear focusing screen.
1822371922Tripod that folds into a walking stick.

Peck, G.

18301894Describes a monorail camera.

Pemberton Billing, Noel

4230351933Photographic cameras; exposure meters; developing-apparatus. July 18, 1933. Describes the general form of the Compass.
4232261933Photographic lens fittings and mounts.
4280031933Stand heads. Nov. 3, 1933. Describes panoramic heads and tripod fittings.
4284551933Photographic shutters. Nov. 3, 1933. Describes the Compass shutter.
4456111934Photographic-film holders. Oct. 15, 1934. Describes a carrier for photographic films.
4479011934Photographic roll-film cameras.
4285161935Contact printer and projector.
4379451935Photographic lens fittings and mounts.
4520131935Photographic-film holders.
4639431935Photographic roll-film cameras. Sept. 4, 1935. Describes a roll-film back.
4651021935Photographic cameras. July 16, 1936. Describes a camera back similar to the Compass.
4678371935Photographic roll-film spools. Dec. 23, 1935.
4783421936Photographic cameras.
4801081936Improvements in or relating to carriers for photographic sensitised material.
4895571938Folding camera with four or more plates forming the body that hinge and collapse. Not present on the Compass.

Perl, A. H. F.

1066801916Plate holder used to produce composite photographs where a mask is moved between successive images.
1066811916Displaying and mounting composite photographs that use a mask.

Phillips, Arthur Claud

5870901945Improvements in or relating to bezel stops for lenses.

Phillips, Forbes Alexander

54381901Describes a while-you-wait ferrotype camera.

Phillips, William Henry

85151894Exposure determining.

Pickard, Arthur Gray

221361895Use of springs and notches in the side struts to locate normal position of front and rear standards. Locking of inner focusing frame by bolts. Focusing screen attached to reversing frame by two flat springs allowing screen to move outwards when slide is inserted.
62381912Focal-plane shutter.
1256151916Focal-plane shutter.
1286261917Describes the T-P Gun camera.
3383901929Hood on a reflex camera fitted with a pocket for the shutter of a dark-slide.

Pickard, Edgar

5111890Rubber grip to fit the shutter to various size lenses.
202531892Exposed indicator for dark-slides.
40811893Changing the slit width of a focal-plane shutter by the use of chains.
129761894Roller-blind shutter. Two blinds moving in opposite directions. Used on the Studio model.
19241895Roller-blind shutter. Use of a safety blind to cover the lens when setting the shutter. Improvement of BP 17516/1891.
165441896Describes a focusing screen that is held in place by springs acting along one edge with a spring loaded bar holding a dark-slide in place.

Pickard, George Arthur

156401900Folding hand camera especially a self-erecting front.
186311901Dial to calculate the shutter speed from the slit width and tension setting.
141371903Front standard and lens board arrangement with springs to retain the lens board within the forks. Spring clamp to retain lens panel.
203301904Means of compressing the bulb of a pneumatic release.
45151905Method of arranging the struts to bring the front and rear standards of a field camera close together.

Piercy, Ernest Vary

236701903Roller-blind shutter where the setting cord is pulled back into the case.

Potter, Rowland Samuel

199621905Exposure determining.

Proctor, Thomas Richard

199431906Printing frame were a pressure bar, operated by a screw, grips the paper to the negative.

Prout, George Frederick

274611910Mechanism for tensioning and releasing roller-blind shutter. Also applied to Focal-plane shutters.
61211913Focal-plane shutter.

Purma Cameras Ltd

4731231936Improvements in or relating to photographic cameras with focal-plane shutters. Application no. GB19360003684.
4899601938Describes a shutter lock when the lens is retracted into the body of the camera. Application no. GB19370003606.
4899611938Describes the Purma shutter.
7013681953Describes a pin used to prevent the shutter from being released on the Purma Plus.

Quemby, James Charles

6624071949Shirley Wellard re-loadable cassette.

Rayment, A.

16751886Method of fixing the front standard to the baseboard using vertical rods inside the forks.
185421888The focusing pinion has reduced sections so that when these are moved over the rack it is out of gear.

Rayment, Arthur

146481891Front standard is made detachable by using spring bolts on the forks. Two positions for the forks locked by a single pair of struts.

Rayment, E.

185421888The focusing pinion has reduced sections so that when these are moved over the rack it is out of gear.

Rayment, F.L.

185421888The focusing pinion has reduced sections so that when these are moved over the rack it is out of gear.

Redding, Henry Joseph

68981884Folding darkroom lamp.
173281888Luzo roll-film camera.

Reeves, John Horace

3383901929Hood on a reflex camera fitted with a pocket for the shutter of a dark-slide.

Reid & Sigrist Ltd

7228381953Photographic cameras with flashlight synchronizers. Application no. GB19520011460. Lindsay Leslie is given as inventor.

Reid, J.G.

81221893Changing box where the exposed plate is raised into the bag by the draw-slide.

Reynolds, R.

16501883Flap/drop shutter. The flap is spring powered, the drop-plate is rubber-band powered.

Ricard, E.

102781891Falling plate camera.

Richard, Jules

100641893Shutter and changing mechanism for a stereo camera.
276461912Roll-film camera, especially the use of a glass plate against which the film is pressed and film-advance release mechanism. Used in the Homéos.
230271913Stereoscopic camera for cine film. Used in the Homéos.
206231914Film spools. Used in the Homéos.

Roberts, Walter George

258491908Reflex camera.
276671909Reflex cameras with a mask to show position of revolving back.

Rochester Optical and Camera Co

90131903Describes the original Premo film pack.
90141903Describes a holder (adapter) for a film pack.

Ross, T.W.

5506311943Photoelectric exposure meters.

Rouch, A.S.

59381885Tailboard camera, especially the fitting of the front and rear standards. Used in the 'Long and Short Focus' camera.
41451888Changing mechanism.

Rouch, S.W.

14481878Stand camera with a hinged baseboard to protect the focusing screen and a front standard mounted on a short focusing rail.
66131887Changing mechanism, shutter for a detective camera. Used on the Eureka.

Rowden, George Vere

201871915The fluid in a developing tank is agitated by introducing air under slight pressure.
1506631920Developing tank for roll films, in which a slide is provided for feeding the film in a double layer into the tank.

Rudolph, Paul

60281890Protar lens.
240891899The Unar lens.
130611902The Tessar lens.

Salmon, Arthur

130401896Vignette frame.

Samuels, T.

72011884The object is to dispense with the tilting back and sliding front. The lens is supported on a 'U' shaped bracket allowing rise, tilt and shift.

Sanderson, Frederick Herbert

6131895Sanderson front standard support struts.
208621900Tallbody feature to prevent bunching of the bellows from obscuring the image.
1141901Device to set the front standard at any angle. Covers the front standard bolts.

Sands, C.

27831881Shutter.
18981884Swing and tilt adjustment using a cradle with curved surfaces attached to the baseboard. Used on the 'Patent Swing' studio camera.
48081887Use of a slotted disc to set tilting back.

Sands, Charles

29401857Stereo Viewer. Handle on the hinged top-flap.

Sands, H.C.

160871884Describes a camera with the front and back standards moved by racks running each side of a single pinion. The patent was used on the 'Imperial' and an earlier model from S&H.

Sangamo Weston Ltd

5319961941Photoelectric exposure meters.

SangerShepherd, Edward

234291911Densitometer.

Sarjeant, W.L.

46241886Describes an actinometer using paper prepared with bromine salt, the paper is held in a circular case.

Savage, R.W.

65331891An interrupted screw (bayonet) is used to attach and disconnect the bellows to the front standard. The tilting back is guided by a curved slot. Back adapted to fit an enlarger or copying device.

Scheimpflug, Theodor

11961904Relates to a method and apparatus for reducing or enlarging the dimensions of a photograph by inclining the original and reproduction.

Schlichter, Wilhelm.

2763461928Exposure meters - extinction.

Schubert, Herman

4103061933Shutter mechanism.
4144651933Roll-film cameras. Shutter mechanism.
5006261937Photographic cameras, shutters.
5007911938Photographic cameras. Claimed under the convention date: 1937.
5008661938Lens mounts for photographic cameras. Claimed under the convention date: 1937.
5073141939Reflex photographic cameras; lenses.

Scorer, W.

125731888Turntable operated by a rack and pinion, general arrangement for focusing and folding the camera.
145371889The lens is mounted within eccentric discs to provide rise and cross front. Other improvements cover tripod fixing.
37431890Covers the fitting of dark-slides to reversing frames, especially an arrangement of catches that prevents the shutter of the slide being withdrawn until it inserted into the camera back.

Scott, J.A.

176421892Exposure determining. Describes a circular slide-rule.

Scott, T.

123891884Describes a folding bed camera with a double-slotted link connecting the baseboard and the back.

Sershall, G.J.

100121890Celluloid vignettes.

Shew, Fox

113941891Improvements to strut cameras.
156571891Describes a strut camera where the lens board is pivoted between the struts and able to tilt. Rise is also possible. Incorporated in a Shew Eclipse model.
246471893Describes a folding hand camera that folds into a small space. Used on the Shew Featherweight.

Sigriste, J.G.

245671898Describes the shutter, changing mechanism and general form of a rigid bodied camera. Used in the Sigriste camera.
121801899Describes the shutter, changing mechanism and general form of a rigid bodied camera. Used in the Sigriste camera.

Skinner, J.H.

80541889Use of an extra large pinion wheel to adjust the focus. A folding handle rotates the pinion wheel, a sliding bolt locks the position.
120011890Method of clamping tripod turntable.

Slinger, Frank

62381912Focal-plane shutter.
1256151916Focal-plane shutter.
1286261917Describes the T-P Gun camera.

Smethurst, Phillip Charles

4755901937Smethurst High-Light Meter.

Smith, A.

9391889Changing mechanism for a detective camera.

Smith, Clement Alfred

168611899Print trimmer.

Smith, George

30141881The rear standard has a rounded base and is clamped by a screw passing through the baseboard. The standard pivots on a ball or cylinder for adjustment, the screw tightens on the ball when clamped. Sold as the Sciopticon, a distinctive tailboard type camera.

Smith, John Henry

11451902Describes a slide-rule actinometer using a tape or ribbon.

Smyth, Herbert

218731899Changing mechanism and shutter for a rigid stereo camera. Used in the L.S.C. Royal.

Soc du Photochrome

48741905Describes a three-colour falling late camera.

Spratt, Alfred Sidney

113031893Folding tripod. The sections are automatically secured into place by a spring catch as the tripod is unfolded.
233871894Printing Frames. Spring catch arrangement to clamp the back in place.
36341895Method of connecting the front standard to the baseboard.
238831895Front standard connected to the baseboard by two studs, each side of the standard, these engage slots one of which is segmental allowing the standard to pivot forward for removal.
36481904Printing Frames. Includes a spring to raise the paper from the negative.

Spratt, George Albert

113031893Folding tripod. The sections are automatically secured into place by a spring catch as the tripod is unfolded.
233871894Printing Frames. Spring catch arrangement to clamp the back in place.
36341895Method of connecting the front standard to the baseboard.
238831895Front standard connected to the baseboard by two studs, each side of the standard, these engage slots one of which is segmental allowing the standard to pivot forward for removal.
36481904Printing Frames. Includes a spring to raise the paper from the negative.

Spratt, Henry James

113031893Folding tripod. The sections are automatically secured into place by a spring catch as the tripod is unfolded.
233871894Printing Frames. Spring catch arrangement to clamp the back in place.
36341895Method of connecting the front standard to the baseboard.
238831895Front standard connected to the baseboard by two studs, each side of the standard, these engage slots one of which is segmental allowing the standard to pivot forward for removal.
36481904Printing Frames. Includes a spring to raise the paper from the negative.

Staley, Alfred Edward

181211907The Staley-Wheeler telephoto attachment.

Stanley, William Ford

32681882Focusing scale attached to the baseboard.
45281885Field camera with an attached focusing hood and magnifier.
28111886Cameras, especially fixing the front standard to the baseboard using studs.
46241886Describes an actinometer using paper prepared with bromine salt, the paper is held in a circular case.

Starnes, H.S.

55981881Camera with provision for holding and changing plates internally by passing a hand through a light-tight sleeve.

Steenbergen, Johan

4103061933Shutter mechanism.
4144651933Roll-film cameras. Shutter mechanism.
5006261937Photographic cameras, shutters.
5007911938Photographic cameras. Claimed under the convention date: 1937.
5008661938Lens mounts for photographic cameras. Claimed under the convention date: 1937.
5073141939Reflex photographic cameras; lenses.

Steiner, Kurt

3659251932Reflex camera

Stevens, Frank Herbert

3782701932Use of a condenser lens combined with the focusing screen.

Stillman, William James

30691871Describes a folding bellows camera where the baseboard is in three parts, the outer two parts fold up to cover the rear and front standards.

Stirn, C.P.

96551886Waistcoat camera.

Stuart, John

296371913The Xpres lens.

Studdert, Maurice Eyre Persse

185341949Application number for the Wrayflex.
185351949Application number for the Wrayflex.
6911031950Reflex camera. Describes the Wrayflex. Application no. GB19490018534.
6911701950Reflex camera. Describes the Wrayflex. Application no. GB19520016662.
6984091950Reflex camera. Describes the Wrayflex. Application no. GB19490018535.

Sun Camera Co

65331891An interrupted screw (bayonet) is used to attach and disconnect the bellows to the front standard. The tilting back is guided by a curved slot. Back adapted to fit an enlarger or copying device.

Sutton, Thomas

21931859'An improved panoramic lens for taking photographic pictures'.

Talman, John

111471911Combined view-finder, level and telemeter.

Tapper, Ambrose Henry

4801081936Improvements in or relating to carriers for photographic sensitised material.

Tartara, Giuseppe Giovanni Battista

1311491918Camera for continuous operation or still exposures, produced as the Sept.
1460541920Improvements to BP 131149 (Sept).

Tattersall, Henry Percy

202261900Method of fixing the front standard to the baseboard to provide lever focusing.
186311901Dial to calculate the shutter speed from the slit width and tension setting.

Tattersall, W.

67751899Method of clamping the front and rear standards by 'V' section plates working on grooves along the baseboard. The plates are pulled together by a bolt running the width of the baseboard. Found on a camera by McBean.

Taylor Taylor & Hobson Ltd

1570371921Three element lens.
5071841937Improvements in or relating to objectives for photographic or like purposes.

Taylor, Harold Dennis

226071893The Cooke Anastigmat lens.
151071895The Cooke Anastigmat lens.

Taylor, T.S.

30191892Tapering the end of screw threads.

Taylor, W.

30191892Tapering the end of screw threads.

Terrett, Joseph

4899601938Describes a shutter lock when the lens is retracted into the body of the camera. Application no. GB19370003606.
4899611938Describes the Purma shutter.

Thornton, John Edward

26701886Field camera with front standard that can be disengaged for collapsing. Double pinion acting on the focusing rack. Circular lens panel carrying several lenses. Flexible focusing screen that winds onto a roller.
122381886Roller-blind shutter.
132401886Field camera with front standard that can be disengaged for collapsing. Hole in baseboard with a turntable to fix tripod. Plumb bob. Circular lens panel carrying several lenses.
144211886So that Waterhouse stops are not lost they fit into a metal frame attached to the side of the camera, to hold them in place a leaf spring has an attached peg that fits into the holes of the stops.
5111890Rubber grip to fit the shutter to various size lenses.
202531892Exposed indicator for dark-slides.
40811893Changing the slit width of a focal-plane shutter by the use of chains.
19241895Roller-blind shutter. Use of a safety blind to cover the lens when setting the shutter. Improvement of BP 17516/1891.
221361895Use of springs and notches in the side struts to locate normal position of front and rear standards. Locking of inner focusing frame by bolts. Focusing screen attached to reversing frame by two flat springs allowing screen to move outwards when slide is inserted.
165441896Describes a focusing screen that is held in place by springs acting along one edge with a spring loaded bar holding a dark-slide in place.
31181898Dark-slides. The top of the draw-slide has corrugations into which strips of velvet, attached to the dark-slide, can fit.
32401898Aluminium case for roller-blind shutter.

ThorntonPickard Manufacturing Co

31181898Dark-slides. The top of the draw-slide has corrugations into which strips of velvet, attached to the dark-slide, can fit.
156401900Folding hand camera especially a self-erecting front.
141371903Front standard and lens board arrangement with springs to retain the lens board within the forks. Spring clamp to retain lens panel.
222071903Roller-blind shutter mechanism. Used on the Royal model.
236701903Roller-blind shutter where the setting cord is pulled back into the case.
203301904Means of compressing the bulb of a pneumatic release.
45151905Method of arranging the struts to bring the front and rear standards of a field camera close together.
62381912Focal-plane shutter.
1256151916Focal-plane shutter.
1286261917Describes the T-P Gun camera.
3383901929Hood on a reflex camera fitted with a pocket for the shutter of a dark-slide.

Treitschke, Friedrich

1084581916Automatic diaphragm where the iris is kept open by a tensioned spring that, when released, closes the iris.

Tylar, William

225571896Strut camera dark-slides and shutter. Used on the Tit-Bit.

Underwood, E.

59651885Field camera with a turntable or cut-out for the lens in the baseboard.

Underwood, T.A.

59651885Field camera with a turntable or cut-out for the lens in the baseboard.

Valsts Elektrotechniska Fabrica

4945441937Photographic roll-film cameras. Claimed under the convention date: 1936. Describes the Minox.
4951491937Photographic roll-film cameras.
5067491937Photographic lens mounts. Claimed under the convention date: 1936. Describes the Minox.

Vergara, F.J.

23901886Dark slide for film.

Vevers, C.C.

74891890Describes a back with swing and tilt. Used on the Perfection model.

Voigtländer & Sohn

3889971933Covers the focusing and rangefinder coupling used in the Prominent.
4092171933Twin lens reflex cameras especially inclining the viewing lens to compensate for parallax.
4419801934Trigger release for photographic shutters.

Voigtländer, F. von

19381877Euryscope lens.

Walker, James Hubert Phipps

191721900Device to hold shutter blades open for focusing, for example on a Unicum shutter.

Walker, W.H.

155421884Roll-film holder.

Walsham, A. E.

1066801916Plate holder used to produce composite photographs where a mask is moved between successive images.
1066811916Displaying and mounting composite photographs that use a mask.

Walters, Edward Cecil

87211912Describes the side struts of a folding hand camera. Used in the Sibyl range of cameras.
87221912Sector shutter. Used on the Sibyl camera.

Warmisham, Arthur

1570371921Three element lens.
5071841937Improvements in or relating to objectives for photographic or like purposes.

Watkins, Alfred

13881890Describes an actinometer on the principle of the slide-rule for determining the exposure to be given to a plate.
143641893Relates to a simplified form of patent BP 1388/1890. Describes the Watkins Junior.
238941893For Factorial development. Includes the Factorial Calculator and an instrument for timing development, using the Factorial method, based on a multi-chambered sand glass.
250001894Relates to an instrument for calculating the time of exposure.
262811898Describes a watch type actinometer. Relates to BP 14457/1884, BP 14364/1893, BP 25000/1894.
193311900Describes a watch type actinometer sold as the Watkins Dial.
278221902Describes a watch type actinometer sold as the Watkins Bee.

Watson, Charles Henry

111471911Combined view-finder, level and telemeter.

Watson, Thomas Parsons

73591886Dark-slides. Small plates are on the draw-slide to prevent the removal of the draw-slide.
99481887Catches for dark-slides to lock the draw-slide in place.
180991888Method of connecting the front standard to the baseboard and locking rising front etc. Used on the Acme camera.

Watson, William

90571898Five sided prism used as a view-finder giving non-reversed image.

Wheeler, Owen

181211907The Staley-Wheeler telephoto attachment.

Whitehead, Charles Edwin

3919531933Tube being one coil of a spring forming a lens hood.

Whitehead, Frank Philip

155481908Focal-plane shutter. Used on the Unit shutter. BP 22134/1904 is referenced. BJA 1909, p. 1193. (Advert.).

Whitfield, George Sydney

90441908Describes the Paget colour screen process.

Wilby, J.A.

67751899Method of clamping the front and rear standards by 'V' section plates working on grooves along the baseboard. The plates are pulled together by a bolt running the width of the baseboard. Found on a camera by McBean.

Wilkinson, Alfred

226331900Printing frame using pins on the back that fit into slots on the side of the frame to prevent slippage.
227931901Print roller.
217681902Print trimmer.
221501902Drying rack for plates.
191981908Tripod with legs of U section. Sold as the Jaynay Quickset.

Wilkinson, John

226331900Printing frame using pins on the back that fit into slots on the side of the frame to prevent slippage.
227931901Print roller.
217681902Print trimmer.
221501902Drying rack for plates.
191981908Tripod with legs of U section. Sold as the Jaynay Quickset.

Willis, Arthur George

4801081936Improvements in or relating to carriers for photographic sensitised material.

Wishart, George

9411892Describes a folding strut camera.
77511899Envelope adapter.
100971904Envelope adapter.
159581905Envelope adapter.
49921906Envelope adapter.
52121906Envelope adapter.

Woodhead, Charles Godfrey

156401900Folding hand camera especially a self-erecting front.

Woods, Alfred

141371903Front standard and lens board arrangement with springs to retain the lens board within the forks. Spring clamp to retain lens panel.
222071903Roller-blind shutter mechanism. Used on the Royal model.

Wratten, Sidney Herbert

36331910Wratten Safelight.

Wray Cameras Ltd

185341949Application number for the Wrayflex.
185351949Application number for the Wrayflex.
6911031950Reflex camera. Describes the Wrayflex. Application no. GB19490018534.
6911701950Reflex camera. Describes the Wrayflex. Application no. GB19520016662.
6984091950Reflex camera. Describes the Wrayflex. Application no. GB19490018535.

Wynne, Charles George

5071841937Improvements in or relating to objectives for photographic or like purposes.

Wynne, George Frederick

106171893Describes a watch type actinometer.
148651897Print meter.
63801914Describes a watch type actinometer with a 'hunter' type of case.

Zeiss Ikon AG

4052081934Coupled rangefinder, "having a deflecting device of two refracting wedges which are rotatable in opposite directions".
4199151934Coupled rangefinder, "having two spherical or cylindrical lenses of opposite sign mounted so as to be relatively rotatable about an axis perpendicular to the plane of measurement and producing zero deviation of the rays in the infinity position".
4598211935Photographic cameras; exposure meters.
4670391937Photoelectric exposure meter, scale and pointer designed for low-light levels.

Zion, Joseph

113021895Describes a rigid bodied camera, shutter and changing mechanism.

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