Patent GB-736097-A (GB)
Abstract: 736,097. Calculating-apparatus. BRUNSVIGA MASCHINENWERKE AKT.-GES. Nov. 5, 1952 [Dec. 3, 1951], No. 27879/52. Class 106 (1). In a calculating machine having a laterally movable actuating mechanism which is settable to represent an item to be entered, this mechanism may be zeroized irrespective of its denominational position. The cam-disc and pin wheel rotor 4 of a multiplying machine is laterally shiftable in a carriage 41 along a driving shaft 2 rotatable by a hand-crank 1 or by a motor to enter a pre-set item in a totalizer 18, the number of revolutions being registered by a counter 20. By suitably positioning the rotor 4, an item set may be entered into the revolution counter 20. The cam-discs are toothed so as to be rotated during setting in turn by a sector 12 carrying a pin 15 which enters a slot 16 in the stem of the operated one of the keys 11 of a single-bank keyboard. The toothed camdiscs may also be engaged by partially toothed wheels 22 mounted on a shaft 21 in the carriage 41 so that on rotation of the shaft the camdiscs are zeroized. The carriage 41 may be restored to its initial position against the action of a spring 5 by rotation of a wheel 89 which draws a cord 7 against a spring 8, an abutment 6 engaging the carriage. Operation of a key 25 determines the shift of the rotor 4 to a retransmission position, in which the toothed camdiscs are aligned with the intermediate wheels 19 or 24 of the totalizer or counter, and also the zeroizing of the cam-discs. A similar key 26 determines zeroizing of the cam-discs and the restoration of the carriage 41. Keys 27 and 28 determine zeroizing of the totalizer and counter respectively. Each control key stem has a cam portion 29, Fig. 4, which co-operates with a projection 30 on a corresponding slide 31 to shift the slide when the key is depressed. A finger 53 on the slide passes through a notch in a wheel 50 and the projection 30 engages a ledge 54 on the key-stem. The slides operate a spring- loaded slide 36 which axially moves a gear 38 fast with the hand-crank 1 so as to mesh this gear with a gear 41 meshing with a gear 42 on a shaft 43. At the same time, a clutch 40 is disengaged to break the drive to the driving shaft 2. The slide 31 operated by the key 25 has projections 55 and 56 by which partiallytoothed wheels 45 and 48 are moved laterally, or tilted, against springs to mesh with wheels 61 and 64 which are thus rotated when the handcrank 1 is operated. The wheel 61 is fast with a cam 68 which rocks a lever 69 to shift a rack 72 engaged by a pawl 74 on the carriage 4<SP>1</SP> so that the latter is moved to the re-transmission position. The wheel 64 is operatively connected with the zeroizing shaft 21 for the rotor 4. The slide 31 operated by the key 26 has a projection 57 which operates on the wheel 48 just described and a projection 58 which couples a partially toothed wheel 49 with a wheel 65 fast with the wheel 89 which when rotated restores the carriage 4<SP>1</SP>. The slides 31 operated respectively by the keys 27 and 28 have projections 59 and 60 respectively which engage partially toothed wheels 46, 47 with wheels 62, 63 operatively connected with the zeroizing shafts of the totalizer and counter respectively. The toothed portions on the mutilated wheels 45-49 are so arranged that during a revolution of the shaft 43 the cam-discs of the rotor 4 are first zeroized, then the rotor 4 is shifted to the retransmission position, then the totalizer and counter are zeroized and finally the rotor 4 is restored to its initial position. At the end of the revolution, the finger 53 of the operated slide is engaged by a cam 51 on the wheel 50 to move the slide further to the left so as to release the depressed key whereupon the slide is restored, the finger returning through the notch in the wheel 50. By operating the control keys in various combinations, an amount in the totalizer or counter may be transmitted to the rotor 4 or the whole machine may be zeroized.