Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Including threading
Patent
1997-09-03
2000-02-15
Nguyen, John Q.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Including threading
2423324, 2425981, G03B 158
Patent
active
060243139
ABSTRACT:
A film tip pulling device which can automatically and reliably pull out the tip of film wound in a patrone. A pair of holder arms are provided on both sides of a case to resiliently sandwich a patrone from both ends thereof. A film tip pulling plate is slidably inserted in a guide groove open at the front side of the case. A guide plate is provided to guide a film being pulled into a space under the tip of the film tip pulling plate into the guide groove. With a patrone set between the front portions of the holder arms and the film tip pulling plate and the guide plate inserted into the patrone through its film inlet/outlet, a motor in the case is activated to reciprocate the film tip pulling plate through a crank mechanism. When the film tip pulling plate retracts, protrusions of the film tip pulling plate engage perforations formed in the film. The film is thus pulled out. When a film tip sensor provided in the case detects the tip of the film, the motor is deactivated.
REFERENCES:
patent: 4113192 (1978-09-01), Osanai
patent: 4138068 (1979-02-01), Kinoshita
patent: 4381083 (1983-04-01), Tsunetsugu
Nguyen John Q.
Noritsu Koki Co., Ltd.
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