GB386246A - Improvements in cinematograph film-feeding devices - Google Patents
Improvements in cinematograph film-feeding devicesInfo
- Publication number
- GB386246A GB386246A GB20074/32A GB2007432A GB386246A GB 386246 A GB386246 A GB 386246A GB 20074/32 A GB20074/32 A GB 20074/32A GB 2007432 A GB2007432 A GB 2007432A GB 386246 A GB386246 A GB 386246A
- Authority
- GB
- United Kingdom
- Prior art keywords
- claw
- film
- length
- feeding devices
- perforation
- 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
- G03B1/20—Acting means
- G03B1/22—Claws or pins engaging holes in the film
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Advancing Webs (AREA)
Abstract
386,246. Kinematograph apparatus. KODAK, Ltd., Kingsway, London.-(Assignees of Wittel, O. ; 343, State Street, Rochester, New York, U.S.A.) Sept. 22, 1931, No. 20074/32. Convention date, Oct. 9, 1930. Divided on 386,042. Drawings to Specification. [Class 97 (i).] The length of the feed movement of a feed claw is made substantially equal to the pitch of the film plus the difference between the length of a perforation and the thickness of the claw; the claw, under such conditions, makes contact with the rear edge of a perforation before beginning the feed movement, or approaches it very closely, and reverse feeding of the film may be effected without re-framing the image. The path of the claw may be that described in Specification 386,042.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US386246XA | 1930-10-09 | 1930-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB386246A true GB386246A (en) | 1933-01-12 |
Family
ID=21900966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20074/32A Expired GB386246A (en) | 1930-10-09 | 1931-09-22 | Improvements in cinematograph film-feeding devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB386246A (en) |
-
1931
- 1931-09-22 GB GB20074/32A patent/GB386246A/en not_active Expired
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