Distance-adjusting mechanism for bellows camera

Details Distance-adjusting mechanism for bellows camera Distance-adjusting mechanism for bellows camera

1977-09-07

1979-10-23

Gonzales, John

354195, G03B 300, G03B 1704

Patent

active

041718917

ABSTRACT:
A bellows camera has a housing movably connected with its lens mount by a scissor linkage including two pairs of intersecting arms on opposite sides of the lens mount, a first arm of each pair having one end pivoted to the housing and the opposite end guided in a slot on the lens mount whereas a second arm of each pair has one end pivoted to the lens mount and the opposite end guided in a slot on the housing. The slot-guided ends of the two second arms are engaged by respective rack members, slidable at right angles to the optical axis, which are in mesh with a pair of pinions on a common shaft traversing the housing and carrying a setting knob. If the knob is rotated beyond a limiting position of an operating range, corresponding to focusing on infinity, the rack members are cammed out of engagement with their respective scissor arms to enable manual collapsing of the camera.

REFERENCES:
patent: 2333737 (1943-11-01), Parr
patent: 2726585 (1955-12-01), Faulhaber
patent: 3398666 (1968-08-01), Mamiya et al.

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