Patent GB-190109132-A (GB)
Title: Improvements in Cash Registers and Indicators
Inventor: MARKS GEORGE CROYDON
Filed: 1901-05-02
Granted: 1902-03-13
Abstract: 9132. Marks, G. C., [Mast, Foos, & Co.]. May 2. Receipts, checking and recording.-Nine keys a for cents and duplicates for dimes and dollars on a common shaft 2 determine with the aid of catch-bars e, Fig. 11, proportionate angular movements for three stepped bails d behind them which swing on a main shaft 1 against the last-struck key of each set, and so draw down racks h that are in gear with indicating - drums i, Fig. 10, visible to the customer, and with adding-wheels connected by carrying- mechanism. When zero is indicated, each stepped bail rests against a finger g<1> projecting from a simple bail g which loads the keys, but is lifted by whicherer is struck. The action in detail is as follows :-On turning through about 90‹ the main shaft 1, by pulling down a hand-lever c, the following three operations occur :-(1) A vertical slide k<1>, having a cam recess against which lies a lever o<6> on a fulcrum o<7>, is raised, and the lever, having a finger o' with limited upward play, shifts a horizontal slide o, which in turn gears up the adding-wheels to the rack h by applying idle wheels j on radial arms j<11>. (2) Arms d' on the main shaft carry the stepped bails back from the raised keys to the zero position, and so record the amount last indicated, while the indicating-drums are obscured by a blind moving with the lever hanging against the vertical slide k<1>. (3) The catch-bars e are set free from detents f under sectors f<2>, and are rocked momentarily to let the raised keys drop, after which any other keys can be struck and the last struck of each set remains upon the catch-bars. When the hand-lever is returned to its original position, (1) a pin k<8> near the bottom of the vertical slide k' trips the fingers o' of the adjacent lever o<6> so that the horizontal slide is re-set by a spring and puts the adding-wheels out of gear, (2) the catch-bar is locked by the sectors f on the main shaft, and (3) the stepped bails follow till they encounter the raised keys. Complete action is ensured by a reversible pawl bearing on the sector f The carrying-mechanism is as follows :-Oblique-edged hanging levers m, having pivoted to them pawls m<1> for feeding the tens wheels one tooth, are vibrated as they are wiped by pairs of rollers k<4> on a longitudinal lever k, which rises and sinks with the vertical slide k<1>, and the action has effect if a pallet j<2> on the units wheels has applied the pawl to the tens wheels by lifting an intermediate lever j<3>, from which a pin j<4> projects into a slot in the pawl. A friction clamp keeps the applying-lever raised although the pallet passes, till a pin on the long lever depresses it again. A positive reversal of the horizontal slide which puts the adding- wbeels into gear may be obtained from the longitudinal lever k by means of an intermediate hanging lever p. Normally a pin on the long lever obstructs a lug p<3> on the hanging one, and the latter obstructs a lug on the slide, but the pin escapes through a gap between this lug and a cam lug p<4> above, and then travels round the cam lug after the cam root of the hanging lever has been struck, thus re-establishing the initial condition. The following modified carrying-mechanism, Figs. 10 and 11, may be used instead of the above. The arm d' on the main shaft, behind each stepped bail, is replaced by an arm s in front and a lever r<1>, operated thereby, which pulls the stepped bail by a slotted link r<3>. The end of the lever is furnished with a pivoted mask r<6> and a latch r engaging it. Normally, as the arm is finishing its upward stroke, the latch strikes a hanger n<3>, and becomes disengaged so that the lever is unmasked and presents a concentric curve to the arm. But, when the pallet j' on the units wheel passes a bell crank n, the hanger n<3> is dragged aside so as not to disengage the latch r on the lever r' associated with the tens wheel. Consequently, the wiping - arm acts through the mask, and so gives the lever an additional displacement, which makes the stepped bail raise the rack one tooth more. A latch n<5> is provided to keep the hanger n<3> aside after the pallet j<2> has acted, till a lug o' on the horizontal slide trips it. Also the pin t projecting from the link h<1> of the rack h will strike the shoulder n<8> of the hanger n<3>, and so limit the movement of the rack, when the hanger is in its normal position.