Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 4909648 | Processor for forms with multi-format data A multi-format document printer and processor has a plurality of data writing and reading means for data in different formats, disposed along a transport path. Forms are separated from a continuous perforated form supply and advanced along the transport p... | 03/20/1990 |
| 4710044 | Ribbon cassette with end of ribbon detector A ribbon cassette for typewriters is provided with an end-of-ribbon signaling device which takes the form of a switch comprising a contact web on a ribbon tensioning lever associated with the supply spool in the ribbon cassette and two contact pins provid... | 12/01/1987 |
| 4678353 | Tape supply cartridge A tape supply cartridge for supplying tape and ribbon to a lettering apparatus having a mechanism for creating a lettering force and a mechanism for positioning a character to be lettered into lettering position. The cartridge includes an improved device ... | 07/07/1987 |
| 4640635 | Method for inhibiting printing during ribbon reversal A method of feeding an ink ribbon for a printer in which the ink ribbon is frequently reused for printing action by reversing the feeding of the ribbon at the ribbon ends including suppressing the printing action of the printer for a predetermined time at... | 02/03/1987 |
| 4313683 | Microcomputer control of ribbon drive for printers A microcomputer controls a ribbon drive assembly in a high speed wire matrix printer to eliminte ribbon slack, to insure proper ribbon positioning and to conduct diagnostics in conjunction with turning on the printer such as start-up time each day and aft... | 02/02/1982 |
| 4294553 | Ribbon feed mechanism An inked-ribbon feed mechanism comprises an electric drive motor (5), reversible for reversing the ribbon feed direction, and a reversing switch (32) for the motor (5). A roller (31) operating the reversing switch (32) travels along a cam (28, 29) formed ... | 10/13/1981 |
| 4294552 | Bidirectional ribbon drive control for printers A printer having an ink ribbon with a bidirectional ribbon drive in which a pair of stepper motors have their windings cross-coupled so that a drag current flows through one stepper motor to apply drag torque to the ribbon when the other stepper motor is ... | 10/13/1981 |
| 4177731 | Printer system ribbon drive having constant ribbon speed and tension An impact printer ribbon drive of the reel-to-reel type, in which a length of ink ribbon extending between and wound around opposite reels is disposed between a reciprocating hammer bank and print paper on a platen, drives the ribbon at substantially cons... | 12/11/1979 |
| 4165191 | Web feed, web cutting and ribbon feed means for a stationery mosaic printer This invention is concerned with a mosaic printer, for example, of the needle print head type which comprises a stationary print head and means for feeding an article, for example a web of paper to be printed, in a direction orthogonal to a row of print d... | 08/21/1979 |
| 4044883 | Apparatus for advancing a ribbon in office typewriters, teleprinters, data printers and the like Apparatus for advancing the ribbon in printing machines such as office typewriters, teleprinters and the like, such apparatus including a pair of ribbon reels mounted on a type carrier carriage which is movable relative to a paper carriage, and a cable lo... | 08/30/1977 |
| 4037708 | Multicolor ink ribbon control for a typewriter A typewriter ribbon system comprising a ribbon drive device movable in response to the operation of a control device. The system allows the selection and printing of a specific longitudinal portion of a ribbon in the operative impact area.... | 07/26/1977 |
| 4025830 | Motor control and web material drive system A motor switching and control circuit is disclosed in which the direction of transport of web material transferred between two reels is reversed by detecting a condition requiring reversal, generating a reversing signal in response to the detected conditi... | 05/24/1977 |
| 3966036 | Inked ribbon feed arrangement An inked ribbon of a high-speed printer for office machines is wound on two spools connected each one with a corresponding electric motor. The ribbon is transferred stroke by stroke from the feed spool to the take-up spool with a substantially constant te... | 06/29/1976 |
| 3954167 | High speed printer Ribbon reversing mechanism in a high speed printer (telecircuitry) including a ribbon driving stepping motor and a print head drive motor both incrementally driven by pulses from the telegraph circuit. The gear ratios in the ribbon drive train are chosen ... | 05/04/1976 |
