Camera mechanism

Details Camera mechanism Camera mechanism

1990-04-11

1991-04-02

Hix, L. T.

354245, 354 21, 354230, G03B 1742

Patent

active

050050346

ABSTRACT:
A camera mechanism in which a shutter plate operating member is slidably mounted for movement between a cocked position and rest position and biased by biasing means into said rest position, and in which actuator means is provided for effecting said sliding movement of said shutter plate operating member, said actuator means being adapted to be connected to a film wind-on device of a camera, wherein said actuator means comprises a cam mounted for rotation in said mechanism and an abutment surface on said shutter plate operating member for cooperating with said cam, so that, in use, rotation of the cam causes said shutter plate operating member to move from its rest position to its cocked position against the urging of said biasing means, said cam being provided with force-varying means whereby greater force is needed to rotate the cam over an initial part of the cocking stroke of the shutter plate operating member than is needed for a final part of said cocking stroke.

REFERENCES:
patent: 4342506 (1982-08-01), Johnson et al.

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