Frame positioning and shutter cocking mechanism

Details Frame positioning and shutter cocking mechanism Frame positioning and shutter cocking mechanism

1994-07-07

1996-05-28

Hayes, Monroe H.

354206, G03B 1742

Patent

active

055216692

ABSTRACT:
A mechanism for cocking a shutter actuating lever during the one-frame advance of a photographic film having one or two perforations per frame. A cocking lever pushes the shutter actuating lever toward a cocked position when a claw lever mounted on a distal end of the cocking lever is engaged in one of the perforations along with advancing of the photographic film. When the shutter actuating lever reaches the cocked position, an arresting lever is rotated into an anti-winding position wherein the arresting lever arrests the shutter actuating lever in the cocked position and, simultaneously, engages with a film winding wheel to stop film advancing. The arresting lever is connected to the claw lever through the cocking lever so as to cause the claw lever to remove from the perforation when the arresting lever rotates into the anti-winding position. A film securing member cooperates with the arresting lever to secure the photographic film after the claw lever is removed from the perforation until the shutter actuating lever is released.

REFERENCES:
patent: 3906530 (1975-09-01), Oshima
patent: 4290676 (1981-09-01), Hozman et al.
patent: 5187518 (1993-02-01), Kitagawa

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