GB514964A - Improvements in or relating to trigger devices - Google Patents
Improvements in or relating to trigger devicesInfo
- Publication number
- GB514964A GB514964A GB14948/38A GB1494838A GB514964A GB 514964 A GB514964 A GB 514964A GB 14948/38 A GB14948/38 A GB 14948/38A GB 1494838 A GB1494838 A GB 1494838A GB 514964 A GB514964 A GB 514964A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bar
- latched
- bell
- spring
- until
- 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
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Landscapes
- Shutters For Cameras (AREA)
Abstract
514,964. Trigger devices. ELECTRICAL RESEARCH PRODUCTS, Inc. May 19, 1938, No. 14948. Convention date, May 24, 1937. [Class 98 (i)] [Also in Group XXIV] A trigger device applicable for operating shutters of photographic sound recording equipment comprises a control reciprocating bar 103 mounted in guides to move vertically and actuated by electromagnets 130, 131 by means of an armature 101. The bar transmits motion to a bar 120 which actuates a light-intercepting shutter. As the bar 103 moves downward, bar' 120 is latched' by bell-crank member 119 and energy is stored in spring 112, until a trip 118 moves the member 119 out of engagement with the bar 120 and spring 112 snaps bar 120 into its alternateposition. The bar is then latched in that position by.bell-crank member 104 until a similar releasing action takes place on the upward movement of bar 103.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US514964XA | 1937-05-24 | 1937-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB514964A true GB514964A (en) | 1939-11-22 |
Family
ID=21971658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14948/38A Expired GB514964A (en) | 1937-05-24 | 1938-05-19 | Improvements in or relating to trigger devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB514964A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4279485A (en) * | 1979-01-04 | 1981-07-21 | Ernst Krull & Co. Gmbh | Electromagnetic drive system for photographic shutters |
-
1938
- 1938-05-19 GB GB14948/38A patent/GB514964A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4279485A (en) * | 1979-01-04 | 1981-07-21 | Ernst Krull & Co. Gmbh | Electromagnetic drive system for photographic shutters |
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