Patent GB-156178-A (GB)
Title: Improvements in and relating to computing apparatus for a weighing scale or the like
IPC: G01G23/18
Filed: 1920-12-31
Abstract: 156,178. Computing Scale Co., (Assignees of Boyer, F. G. L., and Boyer, E. E. L.). July 24, 1915, [Convention date]. Computing - apparatus. -In a computing-apparatus for a weighing scale or the like, a weightfactor stop set by the weighing scale is associated with a price-factor element which controls a vernier device for giving readings of the resulting product of the weight and the price factors. In operating the machine the goods are placed on the scale pan, a lever is set to the price per pound and when the scale comes to rest a handle is moved to and fro thus completing the operation by issuing a ticket printed with the price per pound and the total value. Indicators at both sides of the machine continue to show these values until another operation is initiated. Weight indications are also shown. An arrangement is provided to prevent the operation of the handle before the weighing scale has aeased to vibrate. The scale beam 51, Fig. 4, of a known weighing scale rotates a cam-shaped weight-factor stop 58 and a weight-indicating drum, through an angle proportional to the weight. A price-factor bar 110. Fig. 6, is pivoted at one end on an horizontal slide 63 and its inclination may be adjusted over a quardant 113 according to the price per unit weight of the commodity. The slide may be adjusted horizontally until the bar 110 contacts with the cam stop 58, the extent of this horizontal movement affording an indication of the total cost of the commodity. In order to adjust the inclination of the bar 110, a lever 115 is moved over a stationary quadrant 117 by means of a finger latch 116 provided with a projection 118. By engaging the bar 110, the projection 118 serves the double purpose of first unlocking the bar from its quadrant 113 and then moving the bar in accordance with the movements of the lever 115. The position of the level 115 and consequently the inclination of the bar 110 is indicated on a price-per-unit-weight dial 125 actuated from the lever 115 by gearing 121, 122. The bar 110 is moved horizontally by turning a hand!e 80, the intermediate connections comprising shafts 81, 84, a resiliently-mounted cam 135, a lever 71, a quadrant 69, a pinion sleeve 68, and a rack 65. The rotation of the handle. 80 also sets the value-indicating dials, the dollars and dimes dials 228, 222 being set by cam-operated levers descending upon stopped cams attached to the dollars and dimes printing-wheels 173, 72, Fig. 4. The cents dial 215, Fig. 6, is set by a rack and pinion connection with a lever used for setting the cents printing wheel 150, Fig. 4. Pawls retain the dials in the set position until released by the movement of the handle 80 in initiating another operation. In a modified indicating arrangement the horizontal movement of the bar 110 pushes forward a slide graduated in dimes so as to indicate against a cents vernier the slide being returned by a spring when the handle 80 starts a new operation. In a modification, the cam stop 58 is replaced by a verticallymoving stop. A dash-pot 88, Fig. 4, is connected to the beam 51 and has an auxiliary cylinder 89. the piston of which is connected to a lever 92. One end of the lever 92 is forked to embrace. loosely the serrated edge of a disc on the camshaft 84, Fig. 6. If the scale beam has not come to rest the fork engages the serrations and prevents the operation of the handle 80. A cam on the shaft 84 operates a clamping device to hold the cam stop 58 during a computing operation. The movements of the lever 115, Fig. 6, used for adjusting the inclination of the price bar 110 are transmitted by gearing to a price-perunit-weight printing-wheel 131, Fig. 4. The dimes printing wheel 72 for the total cost is mounted on the pinion sleeve 68 used to slide the bar 110 horizontally by turning the handle 80. The dimns wheel has a slight freedom of movement on the sleeve 68 and after being rotated in accordance with the horizontal movement of the bar 110, it is brought to exact printing position bv means of a pawl actuated by a cam on the shaft 84. Continued rotation of the handle 80 releases by cam mechanism a series of ten spring-pressed pawls 160, Fig. 9, pivoted on the frame. The pawls are arranged in vernier relation to a series of notches in a wheel 157 which is secured on the pinion sleeve 68 and consequently is rotated in proportion to the horizontal movement of the bar 110. One of the pawls drops in to one of the notches and obstructs the movement of a cam-operated arm 152 rigidly connected to the same shaft as a cents-printing wheel 150, Fig. 4, and thus sets this printing- wheel. The dimes-printing wheel transfers to a dollars-printing wheel 173. During the final movement of the handle 80 an impression is taken from the value and price wheels on a strip of paper by a platen, and the paper is fed forward and cut off by shears 202, 203, Fig. 4, all these operations being effected by cams on the shaft 84. In a modified printing-arrangement, a type strip moves horizontally with the bar 110 and co-operates with a type vernier to give a record on a paper strip. Instead of printing monetary values the apparatus may be arranged to print the number of articles in the scale pan, after setting the price lever 115 to the number of articles required to make a pound.