Abstract: A document imprinter, especially for labels, tickets, tags, and the like, having a rotary printing unit and an inking roller, with novel means for adjusting the position of the inking roller relative to the printing unit, said adjusting means including locating means in the form of a plurality of flat surfaces each located at a different distance from the roller's axis of rotation.

Abstract: A constant potential power supply with current overload protection having a series switching regulator including a series switching circuit controlled by both a Schmitt-trigger circuit controlled by an output voltage detector to maintain the output load voltage within a predetermined range during normal operation and a current overload protection circuit having a foldback characteristic which operates when the output current goes above a predetermined value. The Schmitt-trigger circuit is actuated by a signal from an output voltage detection circuit when the output load potential decreases below a certain value to enable the series switching circuit to conduct current to the load from an input voltage source and is disabled as the output load potential goes above a certain value. After actuation of the series switching circuit and until it is disabled, charging current passes into an integrating capacitor.

Abstract: A portable calculator utilizing a solar panel array which can be either slidably moved within the calculator's housing or pivotly connected to it and which when exposed to incident light provide power for the calculator.

Abstract: A linking arms mechanism for a prong type loose-leaf paper binder having spacer bars with recessed portions within which curved spaced prongs are fixed and integral raised shear stops are formed which cooperate with a hinge assembly.

Abstract: A document imprinter, especially for labels, tickets, tags, and the like, having a rotary printing unit and an inking roller therefor, having a novel means for driving the inking roller at a constant rotational ratio relative to the rotary printing unit even though the distance between the two is changed, said novel means comprising a deformable cup-shaped member.

Abstract: An optical scanning station includes means for generating a predetermined scanning pattern along a given plane, and a member embodying said scanning pattern in the form of open slots substantially coincident with said given plane.

Abstract: A Schmidt trigger voltage regulator having a latching circuit at its input to disable the regulator during an overload condition and automatically resets the latching circuit when the overload condition is removed thereby allowing the regulator to function in its normal voltage regulating mode.

Abstract: A modular screen partition system includes a mounting post containing inserts which permit the joining of any desired number of partitions to the post while permitting complete angular orientation capability in a light- and sound-proof assembly. The inserts, located within the top and bottom interior of the mounting post are retained by means of a plug preventing lateral movement and a post to which a cover cap is secured. A bolt associated with each insert is engaged by a mounting track provided at each side edge of the screen partition.

Abstract: A switching regulator is series connected to an oscillator. A schmitt trigger responds to load voltage variations to control the on-off conditions of the switching regulator. When the switching regulator is on the oscillator is on to provide through transformer coupling an output to a capacitor connected across the load. When the voltage across the capacitor increases to a predetermined value the schmitt trigger turns the switching regulator off and thereby the oscillator too, the capacitor continuing to discharge into the load.

Abstract: A data processing console having a rotatable keyboard.

Abstract: An indexing device has a toothed gear actuated by a reciprocating yoke impinging on a tooth to turn the gear and to hold the gear in a fixed position upon further movement of the yoke in the same direction. The yoke is reciprocated through a cam connection with a pivoted lever which in turn is acted upon alternately by two electromagnets. Each stroke of the yoke rotates the indexing gear one tooth.

Abstract: A temperature compensated regulator circuit makes use of the net positive temperature coefficient of voltage characteristic of a pair of back-to-back zener diodes to compensate for the negative voltage temperature coefficient of the base-to-emitter junction of a transistor.

Abstract: A looseleaf binder mechanism having a pin-and-slot mounted shiftable latching slide provided with novel positive detenting means comprising an elastomeric washer mounted on the pin and cooperable with a protuberance formed on the latching member intermediate the ends of the slot, to thereby hold the latching member detented in its respective shifted end positions.

Abstract: Machine for marking documents with visually readable printed information on one portion of the document, and with magnetically encoded information on another, magnetizable portion of the document. The magnetically encoded information is read to determine if it was recorded with an error. If it was, printing is prevented so that a document which has an error in the magnetically recorded information is presented as a blank, non-printed document. It is therefore readily apparent that the document is defective and should not and cannot be used.

Abstract: A print wheel of the type employed in business machines is formed by positioning a ring-shaped metal blank in a die and forcing fluid plastic under pressure against the ring thereby causing the metal to flow into the characters provided in the die and to assume their shape.

Abstract: A pair of electromagnets, each including pole faces separated by an air gap, cooperate with a permanent bar magnet, the ends of which extend into the electromagnet air gaps. Polarization of the electromagnets causes the bar magnet to shift into four possible positions thereby shifting a coupled print head to bring one of its four type bands into printing position.