GB772389A - Improvements relating to motion picture projectors - Google Patents
Improvements relating to motion picture projectorsInfo
- Publication number
- GB772389A GB772389A GB19562/55A GB1956255A GB772389A GB 772389 A GB772389 A GB 772389A GB 19562/55 A GB19562/55 A GB 19562/55A GB 1956255 A GB1956255 A GB 1956255A GB 772389 A GB772389 A GB 772389A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- sound
- roller
- reel
- take
- 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
- G03B1/56—Threading; Loop forming
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Facsimiles In General (AREA)
Abstract
772,389. Sound and picture apparatus. STEATIT-MAGNESIA AKT.-GES. July 6, 1955 [July 7, 1954], No. 19562/55. Class 40 (2). In a motion picture projector arranged for use with sound reproducing apparatus and having a take-up roller and a guide over which the film passes to the take-up reel are arranged to serve as the feed roller and sound scanning device, respectively, of the sound reproducing apparatus. In the Figure, a film 1 is drawn from reel 2 over a sprocket 3 by a reciprocating claw 4 which shifts the film step by step through the picture projector. The film is drawn over take-up roller 6 which is driven at constant speed by an auxiliary motor, preferably a synchronous motor, a spring-loaded pulley 8 holding the film in positive driving contact with the roller 6. A guide 12, carrying the sound scanning device, guides the film to a roller 13 from which the film is drawn on to reel 11 through the medium of a slipping clutch. Sound only may be reproduced from the film by passing the film direct to pulley 8 from reel 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE772389X | 1954-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB772389A true GB772389A (en) | 1957-04-10 |
Family
ID=6681262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19562/55A Expired GB772389A (en) | 1954-07-07 | 1955-07-06 | Improvements relating to motion picture projectors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB772389A (en) |
-
1955
- 1955-07-06 GB GB19562/55A patent/GB772389A/en not_active Expired
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