Patent GB-149034-A (GB)
Title: Improvements in vending machines
IPC: G07F11/68
Filed: 1919-04-23
Abstract: 149,034. Coffman, S. M. April 23, 1919. Delivery of stamps &c. from strips.-A machine for vending stamps or other articles in web form has web selecting means controlled by coins of different denomination, said means being adapted to be actuated simultaneously if a coin of the right denomination is inserted. The web-feeding mechanism is selectively actuated by bell-crank levers 47, 48, 49 one or other of which is operated according to the nature of the coin inserted. These levers are pivoted at 58, the levers 47, 49 being connected by rods 54, 55 and pin- and-slot connexions 56, 57 to a rocking frame 50 normally held in raised position by a frame 50<a>. The levers 47, 48, 49 have grooved lateral extensions 59, 60, 61 which normally lie one above another in a slot 43 of the coin shoot and are selectively engaged by the end of a plunger 41. The frame 50 has fingers 64 which act on levers 67, 68, 69, Fig. 7, fulcrumed in housings 70, 71, 72 superimposed on web-guides 73, 74, 75 having openings 76 to receive fingers 53 provided in the housings to engage perforations in the stamp webs. Operation of the levers 76-69 raises the ends of the corresponding fingers and allows the webs to be fed forward by rolls 51, 52. The feed rolls 51 which run on the rolls 52 are journaled in frames 81 depressed by springs 83 and pivoted on a pin 82. The roll 52 is driven by bevel gear from a shaft 27. A U-shaped lever 88 rocking on the pin 82 engages the frames 81 and raises the rolls 51 when a projection 90 on the lever is engaged by a cam 91 on the shaft 27. A latch 92 pivoted at 93 has a curved extremity resting on a pin 94 carried by a lever 95 rocked by a cam 30. The latch 92 is held on the pin 94 by a spring 102 and has a notch 104 to engage an extension 61 on the lever 49 and hold back the lever when moved by the plunger 41, as shown in Fig. 3. The stamps are held on spools 105, 106, 107 mounted on slides 110 and 113. Severed stamps are conducted to a delivery opening by an apron 116 pivoted at 117 so that the free end may be pushed out of the path of a rotary blade 22 by which the stamps are severed. A coin inserted in the shoot 5 comes to rest on a stop lever 11 pivoted at 12 to an arm 13 mounted on a pivot 14. The lever 11 has an extension 16 which underlies the rear of a lever 17 having a pin-and-slot connexion with a crank 18 fixed on a rock shaft 20 which has also fixed thereon a stop 21 extending into the path of the rotary blade 22 driven by a shaft 27 and co-acting with a fixed blade 23. The lever 17 is held down in the slot 24 by a spring 17a, and its upward motion is limited by a stop 26. A cam 30 on the shaft 27 bears against the arm 13 and moves it at each revolution of the shaft so that the stop lever 11 is moved laterally across the shoot and allows the coin to drop. The shaft is prevented from reverse rotation by a ratchet and pawl 34, 33, Fig. 9. A pin 35 projecting from the wheel 34 engages a slot in a lever 36 pivoted at 37 and connected at its free end to a link 38 pivoted to a bell-crank lever 39 fulcrumed at 40 and pivoted to the plunger 41 extending through slots 42, 43 in the coin shoot and held against the bottom of the slot by a spring 44. The arms of the bell-crank lever are yieldingly connected by a spring. 47, spreading being limited by a stop 39<a>. The size of the coin present in the shoot determines with which of the levers 47-49 the plunger 41 shall be guided into engagement on the movement of the system 36 - - 39. The lower end of the lever 95 is pivoted to a rod 99 pivoted to a crank 19 so that actuation of the lever 95 moves the stop 21 into the path of the blade 22 and allows the lock-bar 17 to engage the shoulder 25 and lock the stop, release of the parts being effected by the lever 11 which raises the bar 17 and allows the spring 17<a> to draw the parts into the position shown in full lines in Fig. 4.