Original linen-backed patent lithograph for Kodak Limited's improvements relating to roll film cameras and a method of manipulating films therein, one page, 12.25 x 10.25, May 9, 1932. The diagram features multiple views of a roll of film on a spool, to be inserted into a chamber in the camera and advanced by rotating the spool after exposure. The top border reads: "372,397 Complete Specification." The lower border features the printed text: "Charles & Read Ltd. Photo-Litho." The left border reads: "This Drawing is a reproduction of the Original on a reduced scale." Includes the printed British "Patent Specification" document, seven pages on four sheets, which describes the objective of the improvement as simplifying "the construction of the camera as well as the feeding of the film past the exposure aperture and the insertion and withdrawal of the film spool." The specification sheet bears a "U.S. Patent Office Library" ink stamp on the first page. In fine condition.
