Abstract: A printing apparatus is provided for printing on a document, such as a bank passbook, which has affixed thereto a magnetic stripe on the cover on which information with respect to the print operation to be performed is written and/or read by a magnetic scanning assembly. The magnetic stripe is positioned on the document parallel to the centerfold and the unbound edge of the cover nearest the last line to be printed on the document. When inserted in the print apparatus, the platen of the printing apparatus clamps the document with stripe positioned above and aligned with the platen to facilitate the scanning of the magnetic stripe by the magnetic head of the scanner assembly. The magnetic head is spring loaded to accommodate surface variations of the magnetic stripe and different passbook thicknesses.

Abstract: A patchcord type electrical connector assembly includes a plurality of female connector parts supported by a mounting plate in an arrangement of perpendicular rows. A male patchcord connector part carries contacts spaced to engage respective ones of a plurality of the female connector parts and includes retention nibs which are received in retention recesses in the form of bores in the housings of the female connector parts. The male patchcord connector part includes longitudinally extending ribs at the edges thereof and intermediate longitudinally extending ribs between adjacent contacts to protect the contacts. The housing of the female connector parts are shaped to receive the longitudinally extending ribs by the provision of recesses which will accept a pair of end ribs of separate male connector parts or an intermediate rib of a male connector part. The complementary structure of the male and female connector parts provides polarization for proper contact identification and engagement.

Abstract: Techniques for terminating a plurality of free-ended insulated electrical conductors in respective insulation-piercing contacts carried in respective parallel channels of an electrical connector include supporting the connector on a base with the channels exposed to receive the respective conductors, and moving an insertion tool generally parallel to the connector to sequentially insert the conductors within the respective channels and insulation-piercing contacts. The connector may advantageously comprise a notched ridge, with each notch in communication with a respective channel for preparatory alignment before insertion. The entire terminating apparatus resembles a credit card impression mechanism with a wheeled carriage supported to traverse a base in opposite directions. In one embodiment, a wire cutter, supported by the carriage, advances in front of the insertion tool to cut the ends of the wires before insertion.

Abstract: A device for crimping conductors into the contact members of a contact strip. According to the invention there is provided a motor driven means for two crimping jaws movable relative to each other, and feeding means for stepwise advancing the contact strip in increments corresponding to the distance between the contacts to feed one contact to the crimping jaws in each operational cycle. An actuating device, which can be controllably manipulated by the operator, actuates the feeding means advancing the contact strip and, in a second position, effects the crimping operation and the return of the feeding means to the initial position.

Abstract: A coaxial impedance matching device employing film resistors in place of conventional rod and disc resistors. In a preferred embodiment, an elongated rectangular film resistor is deposited across the middle of a square insulation substrate with a pair of metal strips along opposite edges of the substrate and contacting the ends of the film resistor. Center metalized contacts are made to opposite sides of the film resistor, the lengths of contact with the sides being determined by the impedances of the cables to be connected thereto.

Abstract: The present invention relates to a device for crimping and shearing contacts of a contact strip, the device comprising a stationary crimping jaw serving as supporting means for the contact to be crimped, a second crimping jaw movable relative to the first crimping jaw, and a shearing device for shearing off the junction between the contact located on the stationary crimping jaw and the carrier strip interconnecting the contacts. The shearing device is in the form of a leaf spring adapted to fit flat on the contact strip in a position flush with the point of shearing, and cooperating with the fixed crimping jaw to effect the shearing action. The contact resting on the stationary crimping jaw is supported by the crimping jaw, and the leaf spring projects laterally beyond the crimping jaw and is adapted to be moved through a shearing stroke relative to the fixed jaw by means of a thrust member on the movable jaw.

Abstract: An inverter for producing regulated AC voltage from an unregulated DC voltage source, such as a battery, employs two stepped voltage waveform generating means independently controlled in phase to produce waveform outputs that approach sine waves which are additively combined to produce an AC output voltage whose amplitude is sensed to produce a feedback signal for comparison with a reference voltage to produce an error signal that causes one stepped waveform generating means to so shift in phase relative to the other as to reduce the error. Each stepped voltage waveform generating means is capable of producing at least half the total desired AC output voltage, so that the DC voltage source may drop by as much as 50% and the desired AC output voltage can still be maintained by shifting the relative phase between the stepped waveforms.

Abstract: A bound booklet is opened and inserted into a guide. A platen, having individual spring biased segments, is positioned against the booklet covers while printing means move horizontally across the open pages of the booklet. A first platen segment contacts the front cover of the open booklet, while a second segment contacts the back cover. An intermediate shortened segment yields to the binding edge of the booklet. Thus, the varying thickness of the booklet is compensated for and a flat printing plane is presented to the printing means. A single leaf document may be accommodated, instead of a booklet. In the case of a single leaf, the resilient nature of the platen compensates for single leaf documents of different thickness, within a permissible range.

Abstract: An improved socket for blade-type electrical contacts which is simple to manufacture, has a high degree of electrical contact reliability and mechanical retention strength, and yet is small in comparison with prior art sockets. The socket is preferably affixed to a printed circuit board, either directly or by means by an intermediate mounting plate for receiving the contact pins of a standard DIP circuit element. In the printed circuit board or intermediate mounting plate, bores are provided in which the contact sockets are inserted. The sockets are prevented from rotation within the bore by crimping the socket and soldering it to the conductor side of the printed circuit board. Each contact socket has an entry end for receiving a blade-type contact pin and an opposite end remote from the entry end.

Abstract: The prolonged depression of a cursor scan control key on a CRT terminal keyboard generates a unique coded signal that is fed to a gating circuit. Prolonged depression is further detected by an astable circuit that generates repeated enabling pulses to the gating circuit so that the coded signal is repeatedly transferred to a separate programmable control unit. The unit is programmed to translate the repeated signals to a cursor scan command for a CRT which forms a part of the terminal.

Abstract: A clock for indicating estimated time of arrival has a minute hand and hour hand for indicating present time in combination with a minute and hour hand which are set for estimated time of arrival (ETA). An ETA hour hand knob positioned above the crystal on the face of the clock has a hollow shaft which protrudes through a central aperture in the clock crystal. The ETA hour hand is mounted to the shaft and mounting tension for the hour hand knob is maintained by a spring washer between the ETA hour hand and clock crystal. An ETA minute hand knob has a shaft portion which coaxially protrudes through the hollow shaft of the hour hand knob. An ETA minute hand is securely fastened to the end of the minute hand knob shaft. A second spring washer is provided between a shoulder on the ETA minute hand knob and a top portion of the hour hand knob, the entire combination providing a simple, stable, individually settable ETA hour and minute hand set.

Abstract: A battery pack is disclosed for an electrical device that is to be stored for an extended period until put into use in a body of water at some depth. The pack is comprised of fully charged batteries from which the electrolyte has been effectively removed for storing. Each battery is connected by a small tube to a reservoir containing an electrolyte-forming substance (which may be just water) or fully constituted electrolyte. Means on an inlet opens at a predetermined depth to admit water into the reservoir and force electrolyte (or just water in the case of battery plates being impregnated with electrolyte-forming substance) into the batteries. Each tube is also blocked by suitable means to hold electrolyte (or water) in the reservoir until its pressure exceeds a predetermined level. The battery pack is encased and the spaces between batteries are filled with inert pressure-equalization fluid so the outside of the batteries will be at the same pressure as the pressurized electrolyte.

Abstract: This invention provides a device for connecting electrical conductors, portions of which can be used as both a receptacle and as a mating connector for joining conductors of an electrical circuit. The device has an insulating body with a passageway extending therethrough from a front end to a rear end. An electrically conductive sleeve is inserted into the passageway, wherein the sleeve is locked and held by abutments formed in the passageway. The sleeve has a resilient electrical contact and serves as a female contact, receiving a mating male contact member. Alternatively the support end of a connector element can be inserted into the sleeve, converting it into a male contact which can be inserted into an insulating body identical to the firstmentioned insulating body to form a plug-type electrical connector. Attachment means, such as a soldering sleeve, is provided on one end of the sleeve for connecting the sleeve to an electrical circuit.

Abstract: An electric connector comprising a dielectric housing with front and rear surfaces and a plurality of cavities extending longitudinally between the surfaces, each cavity having a pair of oppositely oriented guide ledges frontwardly disposed in the cavity and laterally extending inwardly from diagonally opposite side portions of the cavity, and a plurality of electrical contacts mounted in the housing, each contact including a pair of opposed spring arms with frontwardly disposed, inwardly bowed engagement portions for receiving a mating contact and a rearwardly disposed tail portion for receiving a conductive element, the engagement portions further including a pair of laterally offset tabs arranged for abutting engagement with the ledges to individually position and limit inward movement of each engagement portion without restricting outward movement of the engagement portion.

Abstract: A phase modulated carrier wave, in which a phase reversal represents one of two binary values is demodulated by sampling at a rate f.sub.s greater than the frequency of the carrier, comparing the phase of each sample with a sample delayed a nominal bit period in one channel, a sample delayed less than the nominal bit period in a second channel, and a sample delayed more than the nominal bit period in a third channel to compensate for positive and negative Doppler shift of the carrier from its nominal frequency in the second and third channels, respectively. A code word is detected in each of the three channels by comparing each demodulated sample bit with a replica of the code word, and correlating the results separately for each channel. The channel with the highest correlation is selected as the one most closely tuned to the carrier frequency received.

Abstract: A digital system is disclosed for demodulating relative phase-shift modulated binary data using a delay circuit to store one data bit period of sample bits for phase comparison with the next data bit period of sample bits, and a cascaded delay circuit of the same length to effectively repeat the demodulation one data bit period later. An up-down counter effectively integrates the difference between current demodulated sample bits and the demodulated sample bits of the previous data bit period to enhance data bit detection. Such data demodulation is used from a selected one of three channels, a center channel for no Doppler shift compensation, and two channels for positive and negative Doppler shift compensation.

Abstract: In a deep pile fabric knitting machine which includes carding wheels from which fibers are transferred to rotary doffers and from which the fibers are selectively taken by knitting needles traveling with a rotary cylinder, but with at least some untaken fibers remaining on the doffers, remaining fibers are scavenged from the doffers, substantially uniformly dispersed and returned for recycling in the same carding paths from which the fibers were originally transferred to the doffers. Returned fibers may be applied directly to the perimeters of the carding wheels, or to sliver leading to the carding wheels. Scavenging may be effected by high speed scavenger rolls and return of the fibers effected pneumatically with mechanical dispersion. Loose fibers are blown from the knitting needles and recycled in the same system with the fibers scavenged from the doffers.

Abstract: An electrical connector for a data display, for example a gas discharge glass data display, provides a low cost connection between the display and a printed circuit board. The connector is designed as an elongate device having an arcuate lower rear surface which allows infinite connector positions within 90.degree. so that the contact tails of electrical contacts carried thereby can be bent to conform to a connector position which locates the data display at a desired angle with respect to a printed circuit board.

Abstract: Rotating baffle supported from below substantially closes opening at knitting level of tubular fabric produced by circular pile fabric knitting machine, and deflects air jet carrying stray fiber up toward exhaust intake above machine. Secondary rotating baffle at lower level further reduces movement of air with entrained fiber into tubular fabric, and carries stop motion ring. Rotation of the ring with the goods minimizes skewing at the tube slitting point.

Abstract: In a known type of machine for ordinarily making solder connections, and which includes a conductor separating and holding device, a carriage mounted conductor cutting and end stripping device and a carriage mounted terminal strip holder movable across the carriage for visual and manual alignment with the strip conductors, an improved structure for terminating free-ended insulated conductors in insulation-piercing contacts of an electrical connector provides for the elimination of the wire stripping blade and means for supporting the electrical connector in a predetermined relationship with respect to the separated wires and an insertion tool operatively associated with the support means and in a predetermined alignment with the connector contacts for quickly making mechanical and electrical terminations of the conductors.