Patent GB-878941-A (GB)
Abstract: 878,941. Selective punching machines. KRANZ, E. Oct. 18, 1957 [Oct. 18, 1956], No. 32618/57. Class 31 (2). [Also in Groups XVI and XIX] An automatic machine for marking gaming slips includes means for drawing off two strips periodically printed with gaming numbers from a supply roller or rollers, a feed device to guide the slips jointly over a cutting plate apertured to conform to the printed impression and on perforating punches displaceable by selector keys to mark the slips, one strip after perforation being wound on to a roller while the other is fed to a severing device by which the gaming form just perforated is delivered to the player, the keys having means to maintain them in operative position until perforation has been completed. Strips 12, 13, Fig. 1, are passed from a roll 11 to a punching station on each side of a plate 27 between a base plate 16 and cutting plate 17, between feed rollers 55, 56, the strip 12 as a record strip to a roll 63 and the strip 13 to a severing device 64, 65 for issue as individual slips to the player. In operation, a coin 42 inserted closes a switch 43, whereupon a coil 39 raises a locking bar 40 to allow depression of keys 22, and a coil 37 lowers a locking plate 28 to prevent retraction of depressed keys. Each key has a key bar 15 carrying a punch 14 and is depressed against a spring 23, a pin 24 passing through an aperture in the bar 40, and when depressed moves the punch to a " ready " position. There may be forty-nine keys corresponding to forty-nine printed numbers on each section of the strips. Seven keys are depressed and held in position by pawls 30 engaging the plate 28. A hand crank 45 is then rotated whereupon a cam 46 on a shaft 44 acts through linkage 48, 50 to move the plate 17 to the left, pushing the strips against the actuating punches to perforate them. A pin 60 on the cam then acts through linkage 59, 58, a gear sector 57 and a pinion 56 to rotate the roller 56 and feed the strip downwards, the member 58 having broken the circuit to allow the keys to be retracted. A link 61 also opens a switch 62. A handle 67 is then pulled to sever the perforated slip. Alternatively, the pin 60 may act on a second linkage to actuate the severing device 64, 65. A bolt 52 prevents movement of the hand crank 45 until a coil 53 is energized. In another form, Fig. 5, the strips are unwound from separate rolls 80, 81 the strip is fed by a device 104, 106, 110 (see Group XVI), the takeup roller is also rotated from the shaft 44 through a friction drive, and a pawl 117 prevents reverse movement of the strips. The plate 28 is replaced by a series of levers 82, one for each column of keys, which are freed by a coil 88 when a switch 89 is momentarily closed by a coin 42, and re-locked by a cam 101 and arm 102. The plate 17 is actuated through a bell-crank 94 from a cam on the shaft 44. The severing device is actuated from the pin on the cam through a linkage 77. If there is no strip fed, a switch 119 is opened, and a coil 120 allows a flap 121 to block the coin passage. The shaft 44 is driven by a motor 100. The keys are released by a cam 123 and lever 125. The linkage 77 may be replaced by double levers 95, 96 and a compression spring 98, Fig. 8, so that if too many keys are depressed requiring a greater force for punching, the spring 98 will yield and perforation will not take place. Alternatively, the plate 17 may be stationary and the punches 14 projected sufficiently to perforate when the keys are depressed.