Patent GB-318985-A (GB)
Title: Improvements in and relating to liquid dispensing apparatus
IPC: B67D7/08
Filed: 1929-02-26
Abstract: 318,985. Bowser &. Co., Inc., S. F., (Assignees of Bond, R. W., and Renfrew, P. B.). Sept. 15, 1928, [Convention date]. Counters actuated by revolving mechanism.; transfer mechanism; zeroizing-mechanism.- In apparatus particularly for use in dispensing gasoline at automobile filling stations an indicating device is provided comprising two simultaneously operated pointers co-operating with dials facing in opposite directions and connected with a metering mechanism actuated by the flow therethrough when a valve is operated. The drive mechanism is connected directly to a totalizing- counter for registering the total quantity dispensed and is connected to the pointers through a friction clutch which enables the pointers to be reset by reversal of movement. The dispensing apparatus as shown in Fig. 2, comprises a housing 34 on which is mounted a casing 36 for the indicating device and in which is housed a meter mechanism 37, an operating lever 45 controlling the inlet valve 51 and motor operating switch 50, a strainer 53, and a liquid supply pipe 52 communicating with the motor operated pump. The outlet from the meter is through a stand pipe 39, visible flow indicator 40, hose 43, and nozzle 44. The nozzle is adapted to be hung on the lever 45 when not in use and to lock the apparatus against fraudulent use the nozzle may be inserted through an aperture in the housing between pivoted plates 46 and held therein by locking the plates 46 by means of a lock 47. Insertion of the nozzle swings a lever 48 to move a pawl 49 into position to prevent operation of the lever 45. The casing 36, Fig. 8, for the indicating mechanism is provided with circular apertures closed by glass windows 55, 56 held in position by spring clips 57, 58 and carries removable rings 216 and frames 110, 116 which support the indicator mechanism and the graduated dials 59, 60. The spaces 63, 64 between the windows and dials form chambers which can be illuminated by the rays from an incandescent lamp 67, Fig. 7, striking reflecting surfaces 65, 66. The lamp is mounted in a holder 70 electrically connected through a plug 73 to leads connected with those in a junction box 75, Fig. 2. The metering mechanism which is of known form as described in Specification 144,136, comprises pistons 81, Fig. 33, displaced by the flow of the liquid to operate a swash plate 82 and control an inlet valve 83 which latter operates gearing 85 to transmit rotary movement to a vertical shaft 86. The shaft 86 is coupled to a shaft 90 which passes centrally up through the casing 36 and is provided at its upper end with a bevel wheel 160, Figs. 11 and 29, engaging a similar wheel 161 on the actuating shaft of a counting mechanism 164. Movement of the shaft 90 in one direction only is transmitted to a sleeve 144 surrounding the shaft by means of a friction clutch 145 as shown in Figs. 18, 19, and 20, which comprises a cup member 146 with three recesses in the bottom thereof in which are seated springs 148 bearing on the lowermost disc of a set of discs 149, 153, pressed into frictional engagement by means of an adjustable gland 156. The discs 149 have lugs engaging longitudinal recesses in the cup to prevent rotation relatively to the cup 146 while the alternating discs 153 partabe of the movement of the shaft 90 by reason of the flat sided central apertures therein engaging flat faces on the shaft. To the sleeve 144 is secured a bevel wheel 104 which meshes with bevel gears 106, 107 connected to the mechanism for operating the indicating pointers 61, 62, 68, 69, Fig. 8. Each gear is connected to a shaft 108, Fig. 23, on which is detachably mounted the pointer 61 indicating quarts and to which is secured a hub 117 carrying a disc 119 with an off-set toothed portion 120, Fig. 26, co-operating with a long and short toothed pinion 121 forming a Geneva type transfer mechanism for advancing a gear 127 secured to a hub 128 journaled loosely on a sleeve 113 surrounding the shaft 108 and carrying the detachable pointer 62 for indicating gallons. A washer 129 and spring clip 130 prevents longitudinal movement of the hub 128 and gear 127. To the opposite face of the gear 127 is applied a three-prong spring plate 134 with a perforation fitting over a projecting pin on a disc 131 mounted on the sleeve 113. An audible signal is provided to give an alarm when the longer pointers 61, 68 have completed a revolution; for this purpose the gears 106, 107 mesh with a bevel wheel 173 on a shaft 174, Figs. 11 and 12, carrying a wiping cam 176 which co-operates with a shoe 178 pivoted on a spring controlled arm 184 carrying a spring arm 180 co-operating with a bell 172. The pointers are reset to zero by reverse movement thereof bv manual operation of a knob 189 on a shaft 190. The shaft 190 has keyed to its. inner end a hub 193 with an opening to receive a head 195 on the end of the shaft 174, and a transverse slideway 196, Fig. 16, to receive a double acting sliding pawl 197, Fig. 14, fitted over the shaft 174. Keyed to the shaft 174 isa disc 199 with projecting pins 200 adapted to co-operate with notches 201 in the pawl. The driving connection between the shafts 190, 174 being through the pawl shaft 197 the shaft 190 can only rotate the shaft 174 to reverse the direction of movement of the pointers. This causes a movement of the gear 106 and shaft 108 in an anticlockwise direction as indicated in Fig. 26 and a pawl 205 on the disc 119 engaging a notch 208 in the sleeve 113 rotates the pointers 61, 62 to the zero position, the pointers being positively arrested by a projection on the disc 131 engaging a latch member. The disc 119 and its toothed portion 120 actuate once during this operation the pinion 121 whereafter the gear 127 is locked against rotation and the spring member 134 slides around with the sleeve 113. The pivotal mounting of the shoe 178 permits the anticlockwise movement of the cam 176 to be effected. The counting mechanism 164 is viewable through an aperture in the dial 60 but the aperture is normally closed by a shutter 166 on a pivoted frame 167 operable, by an authorized person, through a connection 171 to a barrel lock 169, Fig. 29. The various parts of the apparatus are removably assembled so as to facilitate adjustment of the pointers, and friction clutch 145. The indicator casing is provided with ventilation openings and with spring pressed check valves connected to pipes leading to various parts of the indicating mechanism for the introduction of lubricating oil. The indicating mechanism may be used in connection with air operated or manually operated systems for dispensing liquids.