Patent GB-308668-A (GB)
Title: Improvements in coin-controlled apparatus
Filed: 1927-09-21
Abstract: 308,668. Thrissell Engineering Co., Ltd., (formerly Brecknell, Munro, & Rogers, Ltd.), and Dolman, H,. J. Sept. 21, 1927. Delivery of liquids; coin action, mechanicalconnection. - A coin-controlled apparatus for imparting a forward and return rotary movement to an element comprises a driving member rotatably mounted on the element and arranged so that normally it may be rotated continuously in a forward direction without imparting movement, to the element, while, after the insertion of a coin and forward rotation of the driving member, coupling means are rendered operable to allow the element to be driven in the said forward direction, and then on reversing the movement of the driving-member, the action of the coupling means will be reversed after which the element can be driven in the reverse direction only pending the insertion of another coin. The invention is described as applied to a handle for actuating a pump for delivering liquids, such as petrol, in measured quantities. The handle comprises a casing 1, Figs. 4 and 5, provided with a knob 60 and rotatably mounted by a journal bearing 3 and a ball bearing 4 on an axle 2 which may be connected to the shaft that is coupled through rack and pinion gear to the reciprocating piston of the pump. A pawl 9 pivoted at 10 has two noses 11, 12 which engage a tooth 13 on the axle 2 to drive the axle in the reverse and forward direction respectively. Normally the nose 11 is held in engagement with the axle 2 by a spring 21 connecting the pawl 9 with a plate 15 loosely mounted on the axle and having a tooth 19 which engages under a tooth or nose 20 on the double pawl. If the handle is rotated in the forward or clockwise direction in the absence of a coin, the undersurface 75 of the nose 11 passes over the tooth 13 against) the action of the spring 21 without the nose 20 passing to the lower side of the tooth or nose 19. When a coin is inserted and the handle rotated clockwise, the plate 15 is rotated slightly clockwise so that the nose 20 passes the nose 19 and the spring 21 causes the nose 12 of the pawl to press against the axle 2. Further rotation of the handle then drives the axle 2 in clockwise direction. If the direction of rotation of the handle is reversed, the tooth 13 engages the undersurface 76 of the nose 12 and returns the pawl 9 to normal position so that it can drive in anti-clockwise direction only, until another coin is inserted. When it is desired to operate the handle without inserting a coin, a locking bolt 70 is withdrawn by a key. This allows a second pawl 67 to be moved by a spring 69 into position for driving the axle in clockwise direction. Coin action, mechanical-connection.-A coin is inserted through an aperture 43 in a disc 34, Figs. 5 and 9, secured in the casing by screws, and passes through guides 50, 45, to a position 46 where it rests against an adjustable block 47 and a peg 28 on a lever 24 which is pivoted at its lower end 25 and is connected at its upper end by a slot 27 to a pin 17 extending from the plate 15. When the handle is rotated in clockwise direction, the tooth 13 engages the! end 42 of a lever 35 pivoted at 36 and causes a peg 39 on this lever to impart movement through the coin to the lever 24, thereby rocking the plate 15 sufficiently to allow the nose 20 to pass the nose 19. Coin-discharging mechanism.-When the tooth 13 passes the end 42 of the lever 35, the coin drops through a passage 57 to a money-box 58, which is closed by a detachable plate. A deflector plate 59 retains the coins in the money-box when the handle is turned up. Coin-slit closing-devices.-When the lever 24 is moved a finger 30 thereon blocks the passage-way 45. Also, when the coin is in the position 46, it holds a weighted pawl 51 in such a position that a lip 56 thereon closes the passage-way 50. The pawl also prevents the coin from falling out while the handle is being rotated. Testing coins.-A magnet 65, Fig. 9, diverts magnetic discs to a passage-way 63 in the disc 34, these discs being returned through a slot 64. A spring is provided to retain the coins in the slot 64 until they are removed by hand.