Patent GB-516239-A (GB)
Title: Improvements in or relating to liquid dispensing apparatus including a computing device
IPC: G01F15/06
Filed: 1938-06-22
Abstract: 516,239. Counting-apparatus. WAYNE PUMP CO. June 22, 1938, No. 18551. Convention date, Aug. 11, 1937. [Class 106 (i)] [Also in Group XXIV] Change-speed gearing, for driving a total cost indicator in liquid-dispensing apparatus, comprises a driving cone of gears 42, driven by the shaft 30 of the liquid meter, and surrounded by a group of supplementary shafts 140, 166; 172 each of which pivotally and slidably carries an idler 188, 190, 192, meshing a wheel 182, 184, 186, feathered on the corresponding supplementary shaft, and also movable into mesh with selected steps of the driving cone 42 by the following means. The idlers 188 &c., associated with the supplementary shafts are carried by arms 200, 202, 204, secured to housings 206, 208, 210, which are freely mounted on the supplementary shafts and carry the feathered pinions 182, 184, 186 axially along with them. Associated with each supplementary shaft is a setting shaft 226, 228, 230 which is first withdrawn axially to rock the corresponding housing 206, 208, 210 by means of a rack 240, 242, 244 moving axially with the setting shaft, so as to lift the idler 188 &c. out of mesh with the driving cone. The setting shaft is then turned to move the housing 206 &c. axially until the idler 188 &c. comes opposite the required steps of the cone, such axial movement being effected by axially-immovable pinions 220, 222, 224, splined to the setting shafts 226, 228, 230 and engaging rack-teeth 214, 216, 218 on the housings. Springs 80 &c. then move back the setting shafts axially, so as to rock the idlers 188 &c. into mesh with the selected step of the driving cone 42. The setting shafts 226 &c., which have actuating-knobs 232, can all be actuated from the same side of the gear, and are locked in adjusted positions by discs 274, secured to the shafts and having facial notches engaging fixed radial pegs on the casing. The setting-shafts are connected 'to an indicator showing the price per unit volume of the liquid dispensed, such indicator comprising on each side of .the machine a tens of cent. wheel 290, a cent. wheel 292 and a tenths of cent. wheel 294, these wheels being turned to adjusted positions respectively by racks 300, 306, 318, 302, 304, meshing with pinions 298, 316 and 296 splined on the respective setting shafts. The supplementary shafts 140, 166, 172 drive a total cost indicator 66, Fig. 1, through differential gearing in the following manner. Secured to the upper end of each shaft is a pinion, e.g., 164, Fig. 4, which is recessed to accommodate the axially-movable housing 208 in its upper positions. The pinions of each supplementary shaft 140, 166, 172 mesh with wheels 132, 152 and 160 respectively, the wheel 160 being integral with a small loose sunwheel 154, meshing the larger step 148 of stepped planet-wheels carried by the wheel 152, their smaller step 146 meshing a sun-wheel 144, integral with a loose sun-wheel 142 meshing the larger step 128 of planet-wheels carried by the wheel 132; their smaller step 126 engaging teeth 124 on a final driven wheel 90. The wheel 90 drives the cost indicator through a toothed wheel, not shown in Fig. 4, on a vertical shaft projecting through the casing and carrying a toothed wheel 82, Fig. 1, driving a shaft 72, connected to the cost indicator 66 through hypoid gearing 70. Cost indicators 66 are arranged on each side of the machine and are easily detachable therefrom, as are also total volume (gallons) indicators 62 which are arranged below the cost indicators and are driven. by a bevel wheel 58, Figs. 1 and 4, fast to the vertical shaft 44 carrying the driving cone 42. The cost and volume indicators 66, 62 have means for resetting them to zero after each sale. In addition to these indicators the device is also provided with total cost and total volume indicators (Fig 3 not shown) which cannot be reset to zero, and constitute sales totalizers. These are arranged on one side of the device and are driven by bevel wheels 94, 106,.Fig. 4. geared respectively to the cost-wheel 90 and volume-shaft 44. Reverse rotation of the driving cone 42 is positively prevented by a one-way brake comprising a diametral pawl 326, Fig. 5, guided in a fixed support. 328, and reciprocated idly in the forward direction of rotation of the cone 42 by ratchet teeth 324 inside the cone, the pawl forming a positive abutment for the teeth 324 in the reverse direction. Specification 425,473 is referred to.