Film winding device for photographic cameras

Details Film winding device for photographic cameras Film winding device for photographic cameras

1974-06-25

1976-04-06

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

74801, G03B 104

Patent

active

039484564

ABSTRACT:
A film winding device for photographic cameras, wherein a planet gear is rotatably provided relative to a rotary driving member which is driven by a film winding shaft; the planet gear is made engageable with a fixed internal gear and a sun gear which rotates on the axis of the rotary driving member; a film winding mechanism is coupled at either one or both of the rotary driving member and the sun gear; a ratchet pawl and ratchet teeth which are mutually engageable are provided on the rotary driving member and the sun gear; and the ratio in the number of revolutions between the rotary driving member and the sun gear is made greater than 2.

REFERENCES:
patent: 1270809 (1918-07-01), Freeman
patent: 2002405 (1935-05-01), Lansing
patent: 2675189 (1954-04-01), Harter
patent: 3414209 (1968-12-01), Kimura
patent: 3757660 (1973-09-01), Kuramoto

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