Patent GB-420141-A (GB)
Title: A registering dispensing device for liquids and more particularly for beverages
IPC: G01F13/00
Filed: 1933-02-23
Abstract: 420,141. Valves. RONAI, D., 18, Schwarzenbergplatz, and BERAN, F., 10, Akkonplatz, both in Vienna. Feb. 23, 1933, Nos. 5557, 5558, and 5559. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 28, 1933]. [Class 135] In apparatus for dispensing liquids the amount delivered is determined by the length of time a discharge valve is maintained open under the control of clockwork mechanism which is set for a predetermined quantity by a selectivelyoperated key or handle. On the depression of a key 1, 1<1>, or 1<11>, its end 3 engages a roller 4, 4<1> on an associated three armed member 5 which is rocked on a shaft 14 against the action of a spring. Each member 5 has a strong spring wrapped round its hub and formed with a straight portion 8 resting on a pin 7 at the extremity of an arm of the member 5. The extension 8 engages a bar 9 mounted in arms 10, 10<1> secured to the shaft 14 and the amount of rotation of the shaft 14 is determined by engagement of the extension 8 with an associated stop member 80, 80<1>, or 80<11> which is adjustable and determines the time for which the liquid is allowed to flow from a main container to the outlet nozzle. An extension of the shaft 9 carries a roller 17 cooperating during the rotation of the arms 10, 101 with a hook shaped lever 18 which is moved to the right under the action of a spring and rotates a shaft 19 on which are mounted cams 20, 20<1> moved downwardly to a position to lock with the ends of levers 21, 211 which are carried on a shaft 89 to which is secured a lever 25 engaged by an arm of one of the members 89, 5, 5<1>, 5<11>. The upward movement of the arms 21, 21<1> raises a shaft 22 to which is attached a sleeve 29 within which is a spring 31, the lower end of which is attached to a member 33 controlling the opening of the outlet valve located between the container and the delivery nozzle. When the members 20, 21, 20<1>, 211 interlock, the spring 31 is held under tension but the valve remains closed until the release of a lock 41, 411 which is effected during the return movement of the operated key. The rotation of the shaft 87 consequent on the depression of a key, forces a strong spring 23 against the lower end of a lever 53 mounted on a shaft 54 and shaped so that during the movement of the three armed member 5 a pin 6 concentric with the roller 4 rides on the upper surface of a member 55 resting on the lever 53. When the key returns to its normal position, the lever 53, Fig. 2 rotates under the action of the spring 23, lifting a lever 49 and rotating the shaft 45 on which are mounted members 44, 441 carrying the rods 43, 43<1> which release the locking members 41, 41<1>. The arm 10<1> which is rotated with the shaft 14 carries a pin 59 on which is mounted a pawl 58 cooperating with a ratchet wheel 60 on the shaft of a gear wheel 61 which through gearing drives an escapement mechanism co-operating with a pendulum 67. The clockwork is held against movement until the lever 49 is raised, when a hook 48 is moved clear of a pin 68 on the pendulum 67. When liquid has been discharged for the pre-determined time and the arm 10 has moved upwards under control of the escapement mechanism, the member 18 moves to the right and the cams 20, 20<1> are released from their locking position, allowing the valve to close, and at the same time the downward movement of the members 21, 21<1> allows the lever 49 to fall whilst the hook 48 locks the pendulum 67 against movement. The mechanism may be arranged so that the same key cannot be operated to control the time setting mechanism until the delivery due to the prior operation of the key has been concluded and to this end the member 55 Fig. 1 mounted on the lever 53 has a step 155 with which the pin 6 on the corresponding three-armed member engages when the lever 53 and member 55 are in the raised position i.e., during the delivery of liquid. Following the full operation of a key 1, 1<1>, or 1<11>, the delivery of liquid and the operation of the timing mechanism may be interrupted to allow froth to settle. Each key carries a roller 136, Fig. 11 co-operating with a lever 135 to which a further lever 132 is rigidly attached. The lever 132 has pivoted thereto a lever 131 having a pin and slot connection with a pivoted lever 130 which engages a pin on the stem of the valve controlling the delivery. With the outlet valve open and the pin 133, in consequence, at the top of the slot 134, the depression of the lever 131 closes the valve and at the same time moves downwardly a hooked lever 148a which arrests the motion of the pendulum and clockwork as in the case of the lever 48 (Fig. 1). The keys are provided with an interlock mechanism Fig. 8 not shown, so that on depression of any key, pivoted leaves are moved with respect to openings in the frame to prevent the depression of the other keys. To ensure engagement of the pawl 58 with the ratchet wheel 60, the downward movement of the arm 10 engages a bar 71 which through a link 72 rotates a shaft 73 and a bent lever 75 so that a member 78 is clutched to shaft 79 and causes the pawl 58 to be pressed against the ratchet wheel 60. The movement of the sleeve 29 and tensioning of the spring 31 may be effected by an electromagnet, Figs. 3, 3<a>. On the downward movement of the arm 10 the contacts 108, 109 are closed, completing the circuit of the electromagnet 104 and after the locking position has been attained, an arm 115 on the shaft 89 opens contacts 113, 114 breaking the circuit of the magnet. When the apparatus is such that small replenishing draughts may be dispensed to effect the filling of the glass, the mechanism is arranged so that the key corresponding to the small draught may only be operated after operation of one of the keys corresponding to the major draughts. Associated with the pin 6<11>, Fig. 2, of the three armed lever 5 associated with the key for the replenishing draughts is a lever pivoted on the shaft 54 and having a nose 141 which is engaged by the arm 101 only when the latter is rotated by an amount corresponding to the actuation of the keys 1, 1<1>. The member is then latched with the arm 148 in a depressed position by a pin 142 engaging a notch 143 on a lever 144. The key 1<11> can now be operated and the pin 6<11> in its forward movement engages the projection 146 depressing the lever 144 which allows the lever 140, 148 to return to its normal locking position for the key 1<11> under the action of the spring 147. Associated with the device is a control valve Fig. 13, which is adapted to maintain a constant rate of flow to the discharge valve irrespective of the pressure in the main container. The control valve comprises an outer casing 150 and an inner member 151 with holes 152 and carrying a spindle 153 on which is slidably mounted a perforated cup 154, which is mounted between two conical springs 155, 156 of which the top spring is the stronger, and the movement is limited by collars 157, 158. At high pressures the downward movement of the cup is controlled chiefly by the small turns of the stronger spring 155, whilst at low pressures the regulation of the annular space for the flow of liquid is chiefly controlled by the weaker spring 156 and the larger turns of the spring 155. Alternatively, instead of using an automatic control valve, the time during which liquid is dis. charged may be automatically increased as the pressure in the container falls off by altering the adjustment of the stops 80, 80<1>, 80<11>. A lever 39 attached to each of the three armed members 5 co-operates with a corresponding indicator wheel 38 to indicate the number of units delivered, or a registering mechanism operated in conjunction with the clockwork mechanism may indicate the total amount of liquid delivered.