Abstract: Between a plurality of side-by-side punches and an operating slide having reciprocating motion is arranged a selective motion transmission device which consists of two pluralities of toothed couplings in mutually opposed positions. The toothed couplings of a first plurality are made integral with the punches while the others follow the reciprocating motion of the slide but are shiftable transversally to it between a neutral position and a working position. In the latter position the teeth of the opposed couplings are mutually aligned and thus allow transmission of the reciprocating motion of the slide to the corresponding punches.

Abstract: A combination paper tape punch and reader having a bi-directional stepping tape transport controlled by a continuously oscillating magnetically activated pawl. A further improvement is a punch interposer geometry allowing for easy removal of the punch and die. A single motor and timing signal is used for both punch and reader tape transports.

Abstract: A tape punch machine in which several subassemblies are arranged for accurate adjustment and easy detachment; to assure accurate and reliable tape movement a stepping motor for feeding the tape receives two pulses for each spacing increment of the tape. The punches are selected by interposers which are not released if the same punch function is to be repeated in successive cycles of the machine.

Abstract: The present disclosure is particularly directed to means that will slow down the operation of the tape perforating apparatus during the time intervals when the fulcrum levers must either travel into place or withdraw themselves from underneath of the lift levers in order to create more time for the critical transfer to take place. The present invention utilizes a double-ended bellcrank instead of the crank link disclosed in the aforementioned patent. As the main drive shaft rotates, the upper end of the bellcrank travels through an elliptical path that creates a partial dwell in the travel of the cradle when the front end of the cradle is near its low position. A partial dwell therefore occurs at the rear end of the lift levers at the critical transfer position.