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Expired
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GB23216/25A
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Individual
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Individual
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Publication of GB240445ApublicationCriticalpatent/GB240445A/en
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
G03D15/00—Apparatus for treating processed material
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Silver Salt Photography Or Processing Solution Therefor
(AREA)
Abstract
240,445. Jarnier, J. H. Sept. 27, 1924. Kinematograph picture films. - A film provided with rectangular feedperforations in the spaces between the pictures, as shown in Fig. 3, which engage a row of claws or teeth on the camera or projector, is characterized in that the number of ranks, and the width of the perforations, are chosen so that the resistance of the perforations to tearing is a maximum, and is equal to the resistance to rupture by traction of the spaces which separate them.
GB23216/25A1924-09-271925-09-17Improvements relating to the arrangement of perforations in kinematographic films
ExpiredGB240445A
(en)