Patent GB-1136871-A (GB)
Title: Coin-operated petrol pumps
IPC: G07F5/20
Filed: 1967-01-05
Abstract: 1,136,871. Coin-freed petrol pumps. KIENZLE APPARATE G.m.b.H. 5 Jan., 1967 [10 Jan., 1966], No. 749/67. Heading G4V. A petrol pump incorporates a coin-operated mechanism which is adapted to be switched into and out of operative condition with the pump, such that in its operative condition, said mechanism controls a shut-off valve and/or the pump motor whereby operation of the petrol pump is controlled by a customer, while in its inoperative condition the operation of the petrol pump is controlled by an attendant. Coins inserted in said mechanism are accumulated in a channel and fed one by one to a cash box as petrol is dispensed. Means are provided whereby coins accumulated in the channel may be recovered at any time by replacing the supply nozzle on the pump and actuating a return knob. The petrol pump includes two indicators displaying the volume and value of petrol dispensed at each operation. Operation.-Coins inserted in the mechanism are verified and passed to a coin slide 186, Fig. 4. The latter moves on rollers 188 and includes the coin channel 189. Initially, the channel is positioned above a member 200. On removing the supply nozzle, a shaft 6 is rotated counterclockwise, Fig. 3. Drive is transmitted from the shaft 6 to the lever 19 through a pawl coupling 48, 49. The lever 19 pivots a pawl 21 through a link 20 to disengage a ratchet 25 on a toothed segment 15. The segment 15 is fast with a shaft 43 and rotated counterclockwise by spring means (not shown) to reset the indicators to zero. Rotation of the shaft 43 pivots a pawl 192, whereby the coin slide is moved by spring 191 to position the channel above a rotary coin carrier 180. In addition, links 111, 113 are moved to free a toothed segment 114 and hence a timer 120 limiting the time available to each dispensing operation. Movement of the coin slide pivots a coin sensing lever 96 provided at least two coins are present in the channel. The lever 96 is fast with shaft 95 and moves a lug 100 clear of a looking member 93 on shaft 73. The lever 96 is locked in its new position by co-operating members 103, 104. The shaft 73 is rotated through members 76, 77 and 81 to 85 when an extension 15<SP>1</SP> on the segment 15 pivots a pawl 86 clear of the spring-loaded member 85. A member 66 is pivoted to lift a magnet 64 and close contacts 63 of a hermetically sealed switch 62 on rotation of the shaft 73 through links 70, 71. The switch controls operation of the pump motor. In addition, rotation of the shaft 73 pivots member 59 to disengage the pawl coupling 48, 49 through links 71, 75, 76 and 61. Simultaneously with dispensing of the petrol the indicator rollers are driven. Said rollers in turn rotate a shaft 40. A cam 177 on the shaft 40 pivots a link 175 to move the rotary coin carrier through members 172 to 176, 178 and 179. A coin is transported past a pivoted sensing lever 223 to a cash box. The sensing lever moves a ratchet mechanism 231/231<SP>1</SP> an amount corresponding to the value of the coin, Fig. 5. The ratchet mechanism consists of two segments having their teeth offset by half a pitch. Pawls 235, 236 co-operate with the ratchet mechanisms to hold them in their new positions against the action of spring 232. A lug 249 on a segment 248 movable with the ratchet mechanism, engages a pin 173<SP>1</SP> on the member 173 in this new position to hold the link 175 clear of the cam 177 and prevents the rotary coin carrier returning to its coin receiving position for as long as credit is entered on the ratchet mechanism. Two fingers 242 and 243 (not shown) on the shaft 40 pivot the pawls 235, 236 on each revolution of the shaft to permit the ratchet mechanisms to return one step at a time to their initial position. On reaching that position, the member 173 is freed and the rotary coin carrier jumps back to its position beneath the channel 189. These operations are repeated until no coins remain in the channel. At this time an arm 139 reciprocated by an eccentric on the shaft 40 engages a pin 138 to move a locking lever 133 aside and release spring-loaded cut-off lever 130. A nose 134 on the cut-off lever 130 engages a cam 135 of the shaft 40, whereby a shaft 128 carrying the cut-off lever 130 is rotated slowly to gradually throttle the cut-off valve. As the valve closes a member 127 on the shaft 128 rocks a lever 142 to lift a rod 144. Pins 145, 146 on the rod 144 lift links 61, and 70 to re-engage the pawl coupling 48, 49 and lower the magnet 64 to switch off the pump motor. Replacement of the supply nozzle on the petrol pump moves the segment 15 clockwise ready for the next dispensing operation. Returning coins.-To recover coins in the channel 189, a rod 208 is rotated clockwise by the coin return knob, whereby a pawl 212 cooperating with a pin 213 on the coin slide, moves the latter to the right and positions the coin channel above a member 200. In addition, a bent member 206 slides on a cone 202 to move a rod 203 axially and withdraw the member 200 from beneath the channel. Multiple coin action.-The coin slide includes three coin channels 189, 189/1, 189/2, adapted to receive different coin denominations, Fig. 12. Coins are removed one at a time from the coin slide. A member 270 is slidably mounted between the walls 187, 187<SP>1</SP> of the coin slide by a shaft 277. The spring between the wall 187<SP>1</SP> and a lug 278 on the member 270, urges the end 277 against a fixed cam 280. As the coin slide is moved above the rotary coin carriers 180, 180/1, 180/2 the member 270 moves to the left. A finger 274 engages a coin in the channel 189/2 to limit movement of the member 270, whereby stops 271, 272 block the exits from channels 189, 189/1. Coins are removed one at a time until the channel 189/2 is empty, whereupon the member 270 again moves to the left until finger 273 engages a coin in channel 189/1. In this position stop 271 blocks the exit from channel 189. When the channel 189/1 has been emptied, member 270 moves to the left to clear stop 271 from the channel 189. A two-armed lever 275 is pivoted on each operation of the rotary coin carriers, whereby members 282 or 282<SP>1</SP> and 283 co-operate to momentarily shift member 270 to the right. This frees the lowermost coin in channel 189/1 or 189/2 from the pressure of finger 272 or 273. Fraud preventing.-Coins jammed in the coin verifier are cleared by rotating a knob 36 counterclockwise to lift a lever 163, Fig. 4. The latter rocks an arm 163<SP>1</SP> to depress a flap clearing the verifier. A lever 255, Fig. 15 (not shown), loosely mounted on the pivot 222 and spring- urged against pivot 227<SP>1</SP>, carries a stop on its outer end. The latter is adapted to co-operate with a segment fixed to the shaft 179 of the rotary coin carrier and prevent pitching of the ratchet mechanism upon rapid operation of the coin return shaft. Switch-over device.-To put the coin mechanism out of operation, a knob 37 is rotated counterclockwise. This action releases a spring- loaded pawl 170 to lock the member 172, and hence the rotary coin carrier, in the position shown. The lever 153 lifts the arm 139 above the pin 138 to lock the cut-off lever 130 in position. The lever arm 101 is depressed through members 150, 151, to pivot arm 94 clear of arm 93 so that operation of switch 62 by push-rod 70 is unaffected by the coin mechanism and the lever 154 moved counterclockwise to engage a lug 122 on the segment 114 and block the timer. Link 61 is lifted by members 148, 149 whereby movement of the segment 15 is blocked by the pawl and ratchet 24, 25. The lever 163 is lifted to rock arm 163<SP>1</SP> depressing a flap in the coin verifier, so that any coins inserted therein are returned unhindered.