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
Application number
GB17020/25A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pathe Cinema SA
Original Assignee
Pathe Cinema SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pathe Cinema SAfiledCriticalPathe Cinema SA
Publication of GB247141ApublicationCriticalpatent/GB247141A/en
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)
Projection-Type Copiers In General
(AREA)
Abstract
247,141. PathÚ CinÚma Anciens Etablissements PathÚ FrÞres. Feb. 5, 1925, [Convention date]. Kinematograph apparatus. -In apparatus having an intermittent-feed device 4 and film-winding means comprising an annular core 2 on a driven shaft 1, no sprocket or the like being disposed between them, means for regulating the tension of the film between the feeding device and the winding means is provided. As shown, the means consists of a roller 6 carried by a lever 7 operated on by a spring 8.
GB17020/25A1925-02-051925-07-02Winding device for motion picture projection apparatus
ExpiredGB247141A
(en)