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: In a tape punching device, punching needle selection takes place by means of selector strips slidably mounted in a rocking arm and engaged by armatures of selector magnets at their rear ends in the vicinity of the rocking axis of the rocking arm. The rocking arm and selector magnets are mounted in a separate case which is insertable in a main housing containing a continuously rotatable main shaft with an eccentric engageable by an open fork at the front end of the rocking arm. The main housing also contains a feeding mechanism alternatively usable for forward feed and back-space through 180.degree. displacement of a pulse supplied to a feeding magnet.

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: An apparatus for notching an edge of a strip of photographic film has an arrangement for advancing the strip in a path. Laterally adjacent the path is located a wheel which rotates intermittently or continuously and which is provided with one (or several circumferentially spaced) punching die(s) provided adjacent the periphery of the wheel. A counter-punch is provided with which the die(s) cooperate(s) so as to notch a longitudinal edge of the strip when the wheel rotates.

Abstract: The deflection of a subterranean tunnel is measured with a rod-like, self-contained instrument that is adapted to be inserted into a radially extending bore of the tunnel adjacent an end of the tunnel where the tunnel is being dug. One end of the instrument is anchored at the end of the bore remote from the tunnel wall, while the other end of the intrument is anchored adjacent the end of the wall in proximity to the tunnel wall. The two ends of the instrument are linearly displaceable relative to each other; the displacement is measured by a transducer means mounted on the instrument. Included in the instrument is a data storage means including a paper tape recorder periodically responsive to a parallel binary signal indicative of the measured displacement.

Abstract: A mechanism for achieving a precisely-timed intermittent operation includes an oscillating drive having continuously repeating oscillating cycles during which an output member of the oscillating drive oscillates back and forth between opposed dead center positions. A driven structure which has an input portion is provided for producing a predetermined intermittent operation. A motion-transmitting member has an operating position situated in the path of movement of the output member of the oscillating drive to be moved thereby, the input portion of the driven structure being situated in the path along which the motion-transmitting member is moved by the output member so that when the latter is in its operating positon a drive is transmitted from the output member through the motion-transmitting member to the driven structure to operate the latter. This motion-transmitting member has a retracted, rest position beyond the path of movement of the output member.

Abstract: A tape punch machine in which, 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.