GB515368A - Driving arrangement for film spools in cinematograph machines - Google Patents
Driving arrangement for film spools in cinematograph machinesInfo
- Publication number
- GB515368A GB515368A GB1609938A GB1609938A GB515368A GB 515368 A GB515368 A GB 515368A GB 1609938 A GB1609938 A GB 1609938A GB 1609938 A GB1609938 A GB 1609938A GB 515368 A GB515368 A GB 515368A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulley
- link
- spool
- driving arrangement
- clutch
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
- G03B21/43—Driving mechanisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
515,368. Kinematograph apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., and DAVIES, B. R. May 30, 1938, No. 16099. [Class 97 (i)] In spool-driving means wherein the spool spindle 5 is carried by a link 6 mounted on a pivot 7 and supported by a driving belt 2 passing round a pulley 4, increase in the weight of the film on the spool thus increasing the tension of the belt, a friction clutch between the pulley 4 and spindle 5 is controlled by a cam member rotated by a link 14 pivoted to a link 15 carried by a fixed pivot 16. The clutch comprises a disc 7, Fig. 2, having a friction surface 8 pressed against the pulley 4 by a spring 11, and the cam surface 10 of a member 9, also engaging the pulley 4, engages a pin 13 on a member 12, so that rotation of the member 9 by the link 14 varies the clutch pressure. U.S.A. Specification 2,099,299 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1609938A GB515368A (en) | 1938-05-30 | 1938-05-30 | Driving arrangement for film spools in cinematograph machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1609938A GB515368A (en) | 1938-05-30 | 1938-05-30 | Driving arrangement for film spools in cinematograph machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB515368A true GB515368A (en) | 1939-12-04 |
Family
ID=10071170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1609938A Expired GB515368A (en) | 1938-05-30 | 1938-05-30 | Driving arrangement for film spools in cinematograph machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB515368A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4523447A (en) * | 1982-09-30 | 1985-06-18 | Stiwa-Fertigungstechnik Sticht Gesellschaft M.B.H. | Wire coiler |
-
1938
- 1938-05-30 GB GB1609938A patent/GB515368A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4523447A (en) * | 1982-09-30 | 1985-06-18 | Stiwa-Fertigungstechnik Sticht Gesellschaft M.B.H. | Wire coiler |
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