GB319201A - Improvements in or relating to cinematographic apparatus - Google Patents
Improvements in or relating to cinematographic apparatusInfo
- Publication number
- GB319201A GB319201A GB6354/29A GB635429A GB319201A GB 319201 A GB319201 A GB 319201A GB 6354/29 A GB6354/29 A GB 6354/29A GB 635429 A GB635429 A GB 635429A GB 319201 A GB319201 A GB 319201A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spindle
- sleeve
- pivot
- spring
- carrying
- 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)
- Friction Gearing (AREA)
Abstract
319,201. Soc. des Etablissements Gaumont. Sept. 17, 1928, [Convention date]. Addition to 308,784. Kinematograph apparatus.-In apparatus according to the parent Specification the spindle g carrying the take-up spool w is driven through bevel pinions g, h, one of which is secured to a friction plate f loosely mounted on -a driving spindle a and contacting with a second plate d<2> slidably keyed on the spindle a; the plates are pressed together by a spring k, and the pressure may be controlled by a pivoted arm D carrying a roller B riding on the wound film. The arm D carries a cam m bearing on a lever n rocking about a pivot p and forked to engage screws o o<1> projecting from a sleeve l freely mounted on the spindle a and separated by ball bearings from a sleeve j forming an abutment for the spring k and slidably keyed to the spindle a. The pivot p is mounted eccentrically on a sleeve s so as to be adjustable to vary the pressure.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR319201X | 1928-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB319201A true GB319201A (en) | 1930-01-16 |
Family
ID=8889884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6354/29A Expired GB319201A (en) | 1928-09-17 | 1929-02-26 | Improvements in or relating to cinematographic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB319201A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680573A (en) * | 1950-10-18 | 1954-06-08 | Edward H Monkley | Automatic tension device |
-
1929
- 1929-02-26 GB GB6354/29A patent/GB319201A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680573A (en) * | 1950-10-18 | 1954-06-08 | Edward H Monkley | Automatic tension device |
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