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FOUR-BAR OPERATING CLAW MECHANISM OF A MOTION PICTURE CAMERA |
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Description
When crank 1 of four-bar linkage ABCD rotates about fixed axis D, the tip of claw a, mounted on connecting rod 2, describes a connecting-rod curve. At one portion 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 At another portion of the connecting-rod curve, claw a is withdrawn from the perforation. |
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