Patent GB-746945-A (GB)
Abstract: 746,945. Cash registers. PREMIER CASH REGISTERS, Ltd. Aug. 28, 1953 [Sept. 1, 1952; Sept. 1, 1952; June 6, 1953], Nos. 21889/52, 21890/52 and 15664/53. Class 106 (1). [Also in Group XVI] In a key-operated cash register having a key-coupler bar, the latter effects sliding movement of a unit which carries a record strip and actuates feed mechanisms for the strip and an ink-ribbon and a hammer mechanism for printing from stationary dies on to the strip. Non-add mechanism. A deep portion 15, Fig. 1, of a slot in a link 7 is normally engaged by a stud 12 in a lever 9 rocked by a cam on the revolution shaft 11 which, in the normal manner, is driven by the key coupler. The link 7 is thus moved to rock a frame 4 so as to engage the totalizer 1 with actuators 2. In non-add operations, however, a cam 17 on which rests an ear 16 of the link 7, is so positioned that the stud 12 is disengaged from the deep portion of the slot and consequently the totalizer is not engaged with the actuators. The cam 17 is positioned by a sector 22 rocked against gravity or a spring by control keys. A right-angled slot 25 co-operates with the shaft 18 of the cam 17 to prevent misoperation. Record strip. The strip PS, Fig. 3, passes round rollers 40 on a plate 38 slidable on the machine frame and reciprocated during each operation by an arm 35 secured to the key coupler, from a front reading position to a rear printing position and back to the reading position. During the rearward movement, a ratchet wheel on a feed roll 40 is engaged by a pawl 42 to line-space the strip and a pawl 57 on the plate 38 engages a ratchet wheel 55 to advance an ink ribbon PR surrounding type wheels 45 mounted on the machine frame. Moreover, the tail 50 of an impression hammer 44 pivoted on the plate 38 is engaged by a trip lever 51 and the hammer is depressed against the action of a spring-loaded plunger 47a. Finally, an adjustable stop 54 on the plate 38 rocks the trip lever 51 which releases the hammer to cause an impression to be made. The parts are restored by the weight of the key coupler. In a modification, Fig. 6, the hammer is pivoted on the machine frame and has a cam surface 59 engaged during the reciprocation of the slide plate by a pawl 61 which first rocks the hammer against the plunger 47a which is mounted on the slide plate and then releases it to cause an impression to be made. Printing and issuing vouchers. An impression hammer 85, Fig. 6, carries platens 87, 88 and 89 which respectively co-operate with manually-adjustable date type wheels 84, consecutive number type wheels 81 advanced during each operation by a link 83 connected to the quadrant 66 described below, and amount type wheels 90 which also bear type for printing on the record strip. Constant matter is printed by a plate 91 on the hammer 85. To effect an impression, the hammer is released, by a cam 94 on the revolution shaft 11 which engages a tail 93 of the hammer, to the action of a spring 92 previously tensioned by a lever 96 rocked by the cam 94 and coupled to the spring. The voucher strip passes from a supply roll 63 and between pressure and feed rolls 64, 65. The feed roll is rotated through pawl and ratchet mechanism by a quadrant 66 connected by a link 67 to the key coupler. The printed voucher is cut or torn off. The pressure roll 64 may be raised to disable the feed mechanism by a hand lever 76. Specification 746,950 is referred to.