Motor-operated film winding apparatus

Details Motor-operated film winding apparatus Motor-operated film winding apparatus

1978-05-23

1979-11-27

Hix, L. T.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307 81, 320 15, G03B 118, H02J 700

Patent

active

041758463

ABSTRACT:
The apparatus comprises a power supply switching device for switching a different battery into circuit connection with a driving motor of the apparatus responsive to completion of each photographing cycle. In one embodiment, the power supply switching is effected by a rotary switch and, in the other embodiment, it is effected by a flip-flop circuit and transistors. The apparatus is capable of effecting film winding either at a high speed or at a low speed and, with high speed operation, all batteries are switched into circuit connection with the motor and the switching of different batteries into circuit connection with the motor is effective only at low speed operation of the film winding apparatus. The finish of each photographic cycle may be determined by the completion of winding of a respective frame of the film or by the completion of each shutter operation.

REFERENCES:
patent: 3448670 (1969-06-01), Suzuki
patent: 3710705 (1973-01-01), Kimura
patent: 3840884 (1974-10-01), Umeda
patent: 4101787 (1978-07-01), Vail

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