Photographic camera for various size exposures using one-piece masking blade assemblage

Abstract

A a photographic camera capable of taking various size exposures comprises a back frame opening for making a full size exposure on a film in the camera, and respective masking blades supported for pivotal movement between a masking position for masking corresponding portions of the back frame opening to allow only a reduced size exposure to be made on the film and a non-masking position not masking the corresponding portions of the back frame opening to allow a full size exposure to be made on the film. The masking blades are connected via a rigid connecting ink having overcenter spring means, located substantially midway between the masking blades to divide the connecting ink into two similar length rigid ink segments, for applying respective forces in opposite directions to the link segments to pivot the masking blades to their masking and non-masking positions. Preferably, the masking blades and the connecting ink including is overcenter spring means are integral to be unitary or one-piece.

Dependencies are inferred from the claim text.