Abstract: A paper feed assembly is disclosed whereby a single driver is used to both engage a paper to be acted on, move or feed the paper to a pre-determined area, and then retract so that the paper may be acted on. The paper feed assembly according to the present invention comprises a motor, a cage, a gear train, and a roller arm. The paper feed assembly being design to permit the motor to rotate in a first and a second rotation and to engage or retract from the paper in response to the first or the second rotation.

Abstract: Apparatus for holding and securing a printer cartridge to a printer that is easy to use and manipulate. The apparatus utilizes a number of mechanical features including cams and pivoting pins to move the cartridge axially so that the cartridge contacts a contact strip and exert force on the cartridge in a generally downward direction to secure the cartridge from moving. Preferred methods for assembling and using the apparatus are disclosed.

Abstract: A dual line slip printer wherein a slip is dropped into a chute to bottom against a supporting member and a serially operated inkjet print head is moved along the length of the slip to print a line of type characters and is then returned to print a second line of characters. As the print head reaches the end of its travel it actuates a camming member to raise the support member to move the slip from one level to another so that the second row of characters will be spaced vertically from the first.

Abstract: When the dollar amount of the transaction is first keyed into a machine, a number intended to indicate the dollar amount is printed onto the document both in an optically readable non-magnetic code and in ordinary numerals. By optically reading the non-magnetic code from the document a set of electronic signals is created which represents the number indicative of the dollar amount, and in direct response to that set of electronic signals the number is then printed onto the document in magnetic ink.

Abstract: A printer for printing data on an original slip and on a copy slip in which both are dropped into a guide chute. Feed and pinch rollers having a higher degree of friction that the friction between the slips tend to drive both slips along the chute and past an ink jet printer. However, a brake initially prevents rotation of the pinch roller and thus retains one of the slips while the other slip is advanced past the printer, at which time the brake is released to enable the feed roller to advance the remaining slip past the printer.

Abstract: A cash register drawer releasing device wherein the drawer latch is pivotally supported for movement to unlatching position, but normally blocked from such movement by a toggle device which may be released by a relatively weak electromagnet.

Abstract: An automatic voltage regulating system for an integrated circuit having a plurality of enhancement mode metal oxide semiconductor field effect transistors on a common semiconductor crystal, the regulation system including a group of series connected metal oxide semiconductor field effect transistors on the same crystal, wherein the combined threshold voltage of such regulating transistors forms a reference to control the bias voltage for the remaining transistors.

Abstract: A fixed data printer is associated with a variable transaction data printer to print a customer receipt and includes a pivoted tape guide member having a tear-off edge by which the tape is severed after passing through the transaction data printer. When the tape is severed over the tear-off edge, a platen section on the guide member presses the tape against a printing member having type thereon representing fixed data, such as a store name, advertising material, etc. to transfer an impression of such fixed data to the tape.

Abstract: A mounting device for removably mounting an article, such as a battery, to a supporting plate comprising a one piece molded plastic member having spaced relatively rigid legs with barbed tips at the lower ends thereof to latch against the support. The legs are formed with inwardly extending mid portions and upwardly extending upper portions integral with the inner ends of the mid portions. A flexible cross element is integrally connected between the inner ends of the mid portions. Flexible inwardly extending arms are integrally connected to the legs adjacent the mid portions to yieldably hold the article downwardly against the support.

Abstract: A solenoid having reduced noise and jarring characteristics which includes a small shock absorbing sphere of rubber or other elastomeric material freely mounted between the solenoid armature and a stationary core piece of the solenoid so as to be engaged and compressed by the armature at the end of its travel.

Abstract: A key controlled lock for electrical switches, etc., in which a rotatably supported plastic switch actuator element is provided with a substantially diametrically extending keyway at one end to receive a key. Locking fingers of a plastic yieldable locking device normally engage in opposite side of the keyway. The key, upon insertion in the keyway, cams the fingers outwardly to release the actuator element for rotation by the key.

Abstract: A paper rewind roll drive for printers of the type in which the paper strip is advanced for both line spacing and to bring the last printed line to the viewing station and is thereafter retracted to position the next print line at the printing station, the drive comprising means for enabling the rewind roll to retract incrementally at the start of a print cycle, and a one-way drive effective after the usual paper advance following a printing operation to impel the rewind roll in an advancing movement with sufficient force to cause it to overtravel and thus take up any slack in the strip brought about by the usual line spacing advancement or otherwise.

Abstract: A diameter sensing, reversible ribbon drive mechanism including disabling cams pivotal about the axes of the ribbon spools for disabling the drive and detent pawls for one spool and enabling similar pawls for the other spool. A first link connecting the drive pawls is oscillated during each printing cycle. A second link connecting the disabling cams carries a coupler which is moved into one coupling relation with the first link by a diameter sensing device which senses a depleted condition of one of the spools to cause the first link to transfer movement to the second link to reverse the conditions of the drive and detent previously enabled pawls.

Abstract: A cyclically operable clutch in which first and second driven gears are provided with interrupted gear tooth sections normally located opposite a motor driven drive gear. The second gear is operably connected to a cyclically operable driven mechanism and the first gear is spring urged to rotate relative to the second gear. A latch normally maintains the first gear out of mesh with the drive gear. Upon release of the latch, the first gear is spring advanced into mesh with the drive gear and a lost motion connection between the driven gears transmits rotation to the second gear to advance the latter into mesh with the drive gear.

Abstract: A squeeze type printer for papers or stacks of papers having varying thicknesses wherein a printing platen is advanced to impress the paper against type bearing members by a yieldably driven cam element connected in series with a positively driven cam element. The yieldably driven cam element is self-locking and acts to advance the paper or paper stack against the type bearing member. Concurrently, the positively driven cam element acts to further advance the paper to cause the printing impression.

Abstract: A squeeze printer for papers or stacks of papers of varying thicknesses wherein a plurality of printing platens are provided comprising individual flexible wall sections of a paper supporting chute which will accommodate different thicknesses of paper or stacks of paper. An actuator is effective through selectively disabled yieldable interposers to transfer a printing force through the platens to the paper.