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FOUR-BAR OPERATING CLAW MECHANISM OF A MOTION PICTURE CAMERA

Abstract

When crank 1 of four-bar linkage ABCD rotates about fixed axis A, the tip of claw a, mounted on connecting rod 2, describes a connecting-rod curve. At one of the portions of this curve, claw a engages a perforation of the film which it moves. At another portion of the connecting-rod curve, claw a is withdrawn from the perforation. $776$LW,OC$

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