Patent GB-630281-A (GB)
Title: Improvements in or relating to counting or summing devices
IPC: G06M1/14
Filed: 1947-03-07
Abstract: 630,281. Counting-apparatus. ADSHEAD, C. W. March 7, 1947, No. 6517. [Class 106 (i)] A counting device of the type used in totalizators comprises, for at least one denomination, a driving member arranged for continuous rotation, a driven member, a friction coupling between the two members, an escapement mechanism to control the rotation of the driven member which, through gearing, drives an indicating drum, said gearing including a shockabsorbing device. A shaft 6, Fig. 1, is continuously driven by an electric motor and drives through friction clutches three gear wheels 9 which are each controlled, as described later, by an escape wheel and drive through an intermediate wheel 11, Fig. 2, a wheel 10 of the corresponding denominational drum 7. Each friction clutch comprises a disc 14 connected by the pins 19 to a sleeve 17 on the shaft 6 and urged by a helical spring 15 against the inside of a flanged disc 12 fixed to the wheel 9. The wheel 9 of the highest denomination, in this case hundreds, is rigidly fixed to an escapement wheel 20. The wheel 9 of each of the other denominations, however, is connected to a disc 22 by a sleeve 21 rotatably mounted on which is an escapement wheel 23, Fig. 5, connected to the disc 22 by a spiral spring 24 which is connected at one end to a pin 25 on the disc 22 and at the other end to a pin 26 on the escape wheel 23. The escape wheel 23 is urged by the spiral spring 24 ahead of the wheel 9 but is prevented from such movement by the pallets 31, 32 of a three-armed lever 30 carried by a sleeve 36 on a staff 3. The third arm 33 of the lever 30 extends downwardly and is spring urged into the position shown in Fig. 2. The arm 33 of the lever 30 associated with the units wheel carries an armature which co-operates with an electro-magnet 35 energized when a bet is received and a ticket is issued at one of the associated ticket issuing machines. The sleeves 36 which at one end carry the levers 30 which co-operate with the " tens " and " hundreds " wheels carry at their other ends an arm 37 which co-operates with a pair of pins 38, Fig. 7, on the disc 22 of the " units " and " tens " denomination respectively. The arrangement is such that after half a revolution of the units disc 22 which corresponds to a complete rotation of the units drum a pin 38 rocks, by means of the lever 37 and the sleeve 36, the lever 30 of the " tens denomination to allow the " tens " wheel 9 to be rotated. In operation, when the electromagnet is energized the units lever 33 is rocked anticlockwise and the associated escape wheel 23 is rotated one tooth by the spiral spring 24 when it is again arrested. The associated wheel 9 is then driven through the friction clutch until the pin 25 on the disc 22 meets the pin 25a on the escape wheel 23. During this rotation of the wheel 9 the corresponding drum 7 is driven through the intermediate wheel 11 carried by an arm 41 on the drum shaft 5. The forward end of the arm 41 projects through a slot in an upright 44 and is spring-urged downwardly. The arrangement is such that the wheel 11 is allowed a degree of movement to absorb the inertia load when the driven wheel 9 is stopped. Transfer takes place as above described. Specifications 166,007, 213,976 and 233,702, [all in Class 106 (i)], are referred to.