Patent GB-378449-A (GB)
Abstract: 378,449. Ticket-issuing machines. CHUBB, G. C. P., COLMER, W. E., 180, Tower Bridge Road, and BANNISTER, A. R., 6, Finsbury Square, both in London. May 8, 1931, No. 13686. [Class 106 (iii).] A selected number of tickets are issued by depressing the appropriate spring-controlled key lever 1 .. 5, the finger piece 10 on which rotates the trigger-lever 12, 14 to withdraw, through the pins 15, 27, the spring-connected pawls 16, 22 from the ratchet teeth 17 on the plunger 18 which moves to the left under the action of the spring 21 until the crosshead 20 comes into contact with the differential abutment 11 on the depressed key-lever, the movement corresponding to a number of the teeth 17 equal to the number of tickets required. The plunger 18 slides in a guide 19 and is maintained against rotation by a pin 18a thereon extending into a slot 19a in the guide 19, and the pawl 22 extends through a slot 23 formed in the guide 19. Normally when no key-lever is depressed the plunger 18 presses against the adjustable tappet 28 on the bellcrank lever 28a mounted on the vertical pivot 29. In the depressed position the heel 9 of the keylever engages with the crosshead 62 on the plunger 61 which is pressed into engagement with an adjustable tappet 60 on the bell-crank lever 28a, a forked arm 30 of which bears on the sleeve 31 and prevents it being depressed under the action of the spring 36. On the depressed key being released the pawls 16, 22 are moved into engagement with the teeth 17 of the plunger 18 by the spring 26 and the sleeve 31 moves down under the action of the spring 36 to put the preferably bevelled gear wheels 35, 37 into engagement and to rotate the extension 59 of the arm 30 and thus the arm 58 with which it contacts to rock the spindle 57 and actuate the mercury interrupter switch 56 putting into action the electric motor C driving through worm gearing housed in the casing 55, the spindle 32 connected by a pin and slot connection 34 with the sleeve 31 and thus the gear wheel 35. The wheel 37 with which the wheel 35 engages is keyed to the lay-shaft 25 which also carries a gear wheel 39 keyed to a pin wheel 40 of a Geneva or Maltesecross mechanism 40, 41 which is operatively connected to a spindle 42 upon which a feed drum 43 is keyed, which is provided with pins 44 extending through holes equally spaced along the length of a pre-printed ticket web, the free end of which passes through the slot 45 and into engagement with a spring-controlled inclined guide plate 46 to raise the spring- controlled flap 63 and extend through the slot 64. A knife 47 is carried by a U-shaped frame 48 pivotally mounted at 49, one of the links being provided with an arm 50, the free end of which is connected by means of a link 51 to a crank pin 52 provided upon the gear wheel 37, a tension spring 53 being connected between the link 51 and an anchorage 54, thus aiding the final portion of each revolution of the wheel 37 and reducing the degree of frictional engagement between the teeth of the gear wheels 35, 37 and facilitating the disengagement of the wheel 35 from the wheel 37. The separate severed tickets of a delivery are maintained in position by the flap 63 with their leading edges substantially equally displaced relatively to one another so that the tickets can be checked before being removed. The pawl 22 is connected to an eccentric 24 provided on one end of the layshaft 25 and as each ticket is delivered the pawl 22 is actuated to move the plunger 18 back one tooth until when the selected number of tickets have been issued the plunger 18 is moved into engagement with the tappet 28 to rock the bell-crank lever 28a so that the forked arm thereof moves the sleeve 31 to disengage the gear wheel 35 from the gear wheel 37, whilst at the same time the accompanying movement of the extension 59 causes the interrupter switch 56 to be broken. Any number of ticket issuing mechanisms may be grouped together as shown so as to be driven by a single electric motor.