Patent GB-360379-A (GB)
Title: Improvements in selector mechanisms for type line casting and other machines
IPC: B41B27/10
Filed: 1930-06-02
Abstract: 360,379. Type-bar-making machines ; typewriters &c. TELETYPE CORPORATION, 1410, Wrightwood Avenue, Chicago, U.S.A. June 2, 1930, No. 23984/31. Convention date, June 5, 1929. Divided on 356,197. [Classes 100 (iii) and 100 (iv).] A selector-mechanism for controlling type-barmaking and other machines comprises a series of slidable permutation members having notches in both. sides and co-operating with a series of elements, which are adapted to move controlling-members in one or the other direction, in order to bring them into engagement with a common actuator. The notched permutation bars 7, Fig. 3, co-operate with selector-rods 10, which are arranged on either side of them, and are pressed against their notched edges by spring fingers 12. The lower ends of the rods 10 engage notches in a series of controlling levers 20, which can slide, and also rock, on a supporting-bar 1. The rear ends of the levers 20 rest below shoulders 30 on the key-bars 31 of the casting- machine, and their notched forward ends are moved by the rods 10 into the path of a universal actuating-bar 25. The bars 7 are shifted against spring pressure by selector-magnets 37, Fig. 6, and the bar 25 is operated by a magnet 38. The bars 7 may be held in their shifted positions by spring latches, and each rearrangement of the bars causes one of the levers 20 to be brought into the path of the actuating-bar 25. The selecting and operating magnets may be operated by telegraph signals transmitted from a distant station, but are preferably operated by a local motor-driven transmitter under the control of a perforated tape, which may be prepared by a keyboard perforator, or by a receiving re-perforator responsive to signals from the distant station. The tape controls levers 50, Fig. 6, which are lifted into contact with it by springs, when released by a universal bar 52, the levers making the circuits of the selector-magnets 37. The universal bar 52, which also effects the feed of the tape, is controlled by a cam 56 on a shaft 57, which is driven by a motor 67 through a clutch 68 controlled by a stop-start magnet 72. The circuit of the operating-magnet 38 is controlled by a commutator disc 64 and a brush 65 on the shaft 57, so that the operating-magnet is energized after the selector-magnets. When the tape is fed directly from a perforator, it passes beneath a pivoted arm 73, which is lifted by the tightening of the tape, if the perforator fails to keep pace with the tape-interpreting device. The circuit of the stop-start magnet 72 is thereby broken, so that the clutch 68 opens and the apparatus is stopped. The circuit of the stop-start magnet also contains a switch 89, controlled by a solenoid-magnet 90, which operates the assembler-elevator of the casting- machine. The apparatus is thereby stopped whenever the elevator leaves its normal position. To enable the apparatus to deal with upper and lowercase characters, an additional permutation bar is provided, which is operated by the other permutation bars under the control of shift signals in the tape.