1985-10-04
1987-09-15
Mathews, A. A.
354209, 354214, G03B 112
Patent
active
046935797
ABSTRACT:
The present invention relates to an arrangement equipped with a motor and a transmission device for the winding of those cameras provided with a winding shaft which is accessible from the outside and which is designed to be rotated until its movement is arrested by a first locking device in the form of a tensioning lock, which after exposure of the film, will once more release the winding shaft. Included in the transmission device is a spring which is tensioned by the motor whilst the camera is being tensioned and which, once tensioning of the camera is complete, is kept under tension under the effect of both the tensioning lock of the camera and a second locking device contained in the arrangement in the form of a rewinding lock. The arrangement also includes a switch which, once tensioning is complete, that is to say with the tensioning shaft in the position in which it is locked against further rotation by the tensioning lock, will interrupt the power supply to the motor. Once the camera has been exposed, that is to say when the tensioning lock releases, the winding shaft will be caused to rotate by the force of the spring, when the switch will be made to close the supply circuit to the motor.
REFERENCES:
patent: 4006489 (1977-02-01), Aizawa et al.
patent: 4460265 (1984-07-01), Mashimo et al.
patent: 4522477 (1985-06-01), Iwashita et al.
Alfredsson Alf I.
Persson Kjell A.
Mathews A. A.
Victor Hasselblad AB
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