Patent GB-401349-A (GB)
Title: Improvements in or relating to selecting devices for type-printing telegraphy and/or electric signalling systems
IPC: H04L17/26
Filed: 1932-05-12
Abstract: 401,349. Selectors for distant control or like systems. INTERNATIONAL COMMUNICATIONS LABORATORIES, Inc., 200, Mount Pleasant Avenue, Newark, New Jersey, and BANCROFT, E. P., 326, East 19th Street, Brooklyn, New York, both in U.S.A. May 12, 1932, No. 13683. [Class 40 (iv).] A selecting device comprises a rotatable member provided with slidable switches, a number of adjustable selecting pins co-operating with a plurality of selectable members, and means controlled by the slidable switches during their rotation to cause the pins to be adjustably positioned and one of the pins to be selectively operated to effect the actuation of one of the selectable members. The member 1, carrying the slidable switches, is connected to a constantly rotating shaft 3, by a clutch 4 controlled by an electromagnet (not shown), and is formed with grooves cooperating with a stud 8 by which a carriage 7 carrying four selecting pins 9 is moved into one of eight positions by three impulses of the signal combination. Two further impulses are utilized to select one of the four pins 9 for the actuation of one of the selectable members 41. The arrangement of the rotatable member is shown in Fig. 7. The slidable members 64, 65, 66, determining the movement of the pin 8 and of the carriage 7, have switch members 67, 68 and 69 .. 73, and through pins 56 cooperate with cams 53, 54, 55 respectively controlled by magnets 50 operated in accordance with three impulses of the signal combination by a distributer. Each magnet 50 when energized removes a latching lever 60, Fig. 3, from a notch 62 in a member carrying one of the cams, such as 53, which under the action of springs 63 is forced against the pin 56 of the associated slide 64 to move the switch member 67 to the left. In accordance with the operation of three of the magnets 50, a path is selectively prepared for the pin 8 to one of the eight positions 201 .. 208, thereby moving the carriage 7 and the four pins 9 accordingly. The slidable members are returned to the right by a restoring cam 48 and the selecting cams 53, 54, 55 are returned against spring pressure by cams 76, 77, 78. Each of the pins 9 is formed with a shoulder 10 and is movable laterally in a grooved member 12, carried on arms 13 secured to a sleeve 14 carrying an operating arm 16 which in the unlatched condition co-operates with an associated cam 17, when set into rotation, to move the pin 9 against one of the pull bars 41. A fourth selecting impulse controls a slidable member 49 carrying a cam projection 26 engaging a projection 28 on a laterally movable locking bar 27 which through its projections 30, 31 locks the left-hand or right-hand member 11 of each pair. The four cams 17 are arranged in two pairs connected to sleeves 18, 19 respectively. The fifth signal impulse controls a slidable member 46 carrying a cam 25 which coacts with one of the pivoted members 44 or 45 to operate the associated clutch 21 or 22, connecting one of the sleeves 18, 19 to the constantly rotating shaft 20. When the clutch 21 or 22 has been operated, the associated pair of cams 17 is set into rotation and when the arm 16 of the member 11 which is not latched by the locking member 27, engages with the flat on its cam, the arms carried on the sleeve 14 rock the pin member 9 against one of the selectable members 41. A shoulder 40 of the selected member is placed into engaging position with respect to one of the operating arms 38, 39, moved downwardly by a spring 37 coacting with one of the cams 32, 33 to actuate the pull-bar 41 operating a type-bar or closing an electric contact. The slides 46, 49 are returned to their normal positions by a cam 47 and the associated cams 51, 52 are restored by cams 74, 75. The clutches 21, 22 may be replaced by an additional locking bar, Fig. 9 (not shown), operated by a cam on member 1 and adapted to latch either the right-hand or left-hand pair of members 11, the shaft carrying the cams 17 being set into rotation directly from the shaft 2, and the cams 32, 33 being replaced by a single cam.