Photo enlarger remote focusing control

Details Photo enlarger remote focusing control Photo enlarger remote focusing control

1979-11-08

1981-03-03

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Focus or magnification control

354195, G03B 2752

Patent

active

042537622

ABSTRACT:
Means for adjusting the focusing shaft of a photographic enlarger of the projection enlargement type from a relatively remote point comprising rod means extending generally at right angles to the focusing shaft of the enlarger. A chuck member is rotatably connected to said rod means adjacent to one end thereof and concentrically with respect to the focusing knob of said shaft and adapted to be releasably attached to said knob. A bevel gear drive connects beween said chuck member and the adjacent end of the rod means whereby the user may rotate the rod means from the other end thereof to rotate the focusing knob and shaft from a point relatively remote from the enlarger. The rod means comprises a plurality of telescoping members whereby the user may readily adjust the effective length of said rod means.

REFERENCES:
patent: 1406041 (1922-02-01), Lehto
patent: 1715526 (1929-06-01), Williamson
patent: 1925524 (1933-09-01), Del Riccio
patent: 3989373 (1976-11-01), Craig

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