GB581383A - Improvements in operating mechanism for strip or film gates for picture projectors - Google Patents
Improvements in operating mechanism for strip or film gates for picture projectorsInfo
- Publication number
- GB581383A GB581383A GB591844A GB591844A GB581383A GB 581383 A GB581383 A GB 581383A GB 591844 A GB591844 A GB 591844A GB 591844 A GB591844 A GB 591844A GB 581383 A GB581383 A GB 581383A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- operated
- strip
- motor
- crank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B1/00—Film strip handling
- G03B1/18—Moving film strip by means which act on the film between the ends thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
581,383. Advertising &c. WOOD, A. F., and BRITISH SOLENOIDS, Ltd. March 30, 1944, No. 5918. [Class 3 (i)] [Also in Group XX] In apparatus for projecting still images from strip film, and having a film gate with filmfeeding means operated by a handle H, the feeding means is operated by a crank P coupled to the handle and driven by a motor M the circuit of which is initially closed by a switch SW2 and is maintained during the feeding movement by a rotary switch SW1. The switch SW2 may be operated manually, or automatically at timed intervals. In a modification, a continuously-running motor drives the crank through reduction gearing and an electromagnetic clutch, which is rendered operative through a single revolution by similar switching means. The motor may operate the starting switch at timed intervals. Specification 579,341, [Group XX], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB591844A GB581383A (en) | 1944-03-30 | 1944-03-30 | Improvements in operating mechanism for strip or film gates for picture projectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB591844A GB581383A (en) | 1944-03-30 | 1944-03-30 | Improvements in operating mechanism for strip or film gates for picture projectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB581383A true GB581383A (en) | 1946-10-10 |
Family
ID=9805069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB591844A Expired GB581383A (en) | 1944-03-30 | 1944-03-30 | Improvements in operating mechanism for strip or film gates for picture projectors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB581383A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2791933A (en) * | 1952-06-13 | 1957-05-14 | Sydney R Crockett | Magnetic clutch camera |
| US3143036A (en) * | 1960-06-01 | 1964-08-04 | Rollei Werke Franke Heidecke | Photographic slide projector |
-
1944
- 1944-03-30 GB GB591844A patent/GB581383A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2791933A (en) * | 1952-06-13 | 1957-05-14 | Sydney R Crockett | Magnetic clutch camera |
| US3143036A (en) * | 1960-06-01 | 1964-08-04 | Rollei Werke Franke Heidecke | Photographic slide projector |
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