摘要:
An apparatus is provided for adjusting the position of a flexible strip which is provided with two rows of perforations. A support is provided with a running surface for the strip, with pins housed in the support which may project so as to enter the perforations. Swinging grippers, which cooperate with the pins, are hinged to the support so as to press the strips against the running surface.
摘要:
A device for driving a flexible strip provided with two rows of regularly spaced lateral perforations. This device includes a first slider to which is imparted a first reciprocating movement back and forth parallel to the direction of said strip, a second slider which moves with the first slider as far as the first reciprocating movement is concerned, but to which is also imparted a second reciprocating movement with respect to the first slider, a hinging plate mounted to pivot on the first slider and carrying claws each of which may cooperate with a perforation in one of the said lateral rows, and means enabling the said hinging plate to be moved towards or away from the second slider.