Mode changing mechanism for pre-winding type photographic camera

Details Mode changing mechanism for pre-winding type photographic camera Mode changing mechanism for pre-winding type photographic camera

1984-10-09

1986-05-06

Perkey, William B.

354213, 354214, G03B 118

Patent

active

045868018

ABSTRACT:
A pre-winding type photographic camera is provided with a mode changing mechanism for changing its operational mode between a pre-winding mode in which film is drawn out from a film magazine loaded in the camera and is taken up around the spool of the camera prior to photographing, and photographing mode in which the film is rewound into the film magazine by one frame each time the film is exposed. The mode changing mechanism is arranged to set the operational mode to the pre-winding mode by, in response to the opening of the backlid of the camera, bringing a mode changing member to a pre-winding mode position, and at the same time causing a force to be charged for bringing the mode changing member to a photographing mode position, and by retaining the mode changing member in the pre-winding mode position in response to the opening of the backlid of the camera, and is arranged to change the operational mode to the photographing mode by releasing the mode changing member in response to completion of the pre-winding mode operation, thereby permitting the mode changing member to move to the photographing mode position under the charged force. The mode changing mechanism is further provided with a magazine switch which is closed in response either to insertion or removal of the magazine and is kept closed until it is opened in response to the opening of the backlid of the camera. The magazine switch is inserted into the energizing circuit of the driving motor for driving the film in the pre-winding mode operation in series with the driving motor.

REFERENCES:
patent: 4460256 (1984-07-01), Araki et al.
patent: 4504131 (1985-03-01), Kimura
patent: 4506965 (1985-03-01), Kitajima et al.

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