Patent GB-280317-A (GB)
Title: Improvements relating to calculating machines
Filed: 1926-09-03
Abstract: 280,317. Tauschek, G. Sept. 3, 1926. Statistical-machines; counters actuated by electric and magnetic means; registering difference of positive and negative actuations.- In a record-card-controlled statistical machine each numeral is represented by as many perforations in the card column as there are units in the numeral, and sensing rollers co-act with an electrically conducting surface through the cam perforations so that as many impulses as there are holes in the column are sent to electromagnets controlling the counting and printing mechanism. The cam, Fig. 12, is divided up into ten fields a, b, c etc. each of ten columns d, the first and second columns of each field being punched according as the amount in the field has to be added or subtracted. For example, fields a and b are punched with the first column for addition and field c with second column for subtraction. The machine counts and prints on a record strip the various items and the net total wage. The card is attached to a carriage 1, Figs. 1 and 2, and each field of ten columns is read simultaneously by ten reading rollers 2. A crank pin 4 co-acts with a. slotted member 3 carrying the shaft 5 of the feelers 2 so that the shaft 5 is moved up and down. In moving to the right, Fig. 2, to read the card field the rollers 2 are pressed on to the card by rails 6 but on returning to the left members attached to the rollers ride up on top of the rails 6 and lift the feelers off the card. The carriage 1 and platen 11 are geared together and the carriage 1 is moved to the right, Fig 1, one card-field at a time by a spring 13 and notches in the carriage co-acting with a pawl 10, Fig. 2, which is pivoted to the machine frame and is freed by a lug 9 on the member 3 each time the roller descends. Each time a feeler makes contact through a hole an impulse is given to magnets 17 and 23 so that one is added to the counter I showing the items and one is added or subtracted on the counter II which shows the running balance and finally, the net total wage. In the counter I a wheel 14 for each card column has a ratchet 15 which is advanced by a toggle pawl 16 riding up an abutment 18 each time the appropriate magnet 17 is energized. In the counter II and in a total-printing device IV, referred to below, each wheel 19 for each card column has two oppositely toothed ratchets 20<a> 20b co-acting with toggle pawls 21<a>, 21b and a magnet 23. These pawls ride up and down abutments 22a, 22b and are pivoted in a sleeve 28 rigid with the armature 23<a>. A frame 24, which is moved left or right for addition or subtraction, Fig. 2, according as the magnets 31, 30 are energized by holes in the first or second columns of the card field, carries members 24<a>, 24b, which support abutment pieces 29<a>, 29<b>. A spring 27 tends to force the toggle pawls away from their ratchet wheels but the abutment piece. which is moved into ergagement, abuts its pawl 21<a> or 21<b> and causes the latter to engage with its ratchet 20<a> or 20<b>. Device III, Fig. 1, is an item-printing device used in conjunction with the item wheels 14, and is operated by similar magnets. Printing totals. Platen operation. A total. printing device IV operated from the wheels 19, Fig. 2, records the running balance step by step as the various items are added or subtracted, giving finally the nett total wage. Type wheels 34 and gear wheels 33, 32 driven from the wheels 19, are mounted in a frame 38 which is moved by a lever 37 about an axis 37<a> for impression on the platen 11 by means of link 35 and crank pin 86 each time a cam field is read. Controlling indication and printing of zeros.- The type wheels 34, Figs. 7 and 8, are attached to nested sleeves, and all, except the highest denomination, have a slide 45 with a groove 47 and a pin 46. All the wheels have annular grooves 48 which are completed by the slide grooves 47 when the latter are in their outer positions. Each groove 47, 48 receives the pin 46 of the wheel of next lower denomination. The slides 45 carry the zero type and are normally in their inner radial positions but where a wheel has been rotated to register a number its groove 48 pulls out radially the pin 46 of the next lower denomination and the " O " type of that denomination is projected, but, to the left of the first significant numeral all the zero typesare in their normal retracted position. Transfer mechanism.-Each pair of abutments 22<a>, 22<b>, Figs. 2, 13, and 14, are attached to a member 22<c> and a part 25 and are adjustable in e frame 39 in a direction parallel to the axes of the magnets 30, 31. The frame 39 as a whole is also adjustable at right angles to the plane of the paper by a magnet which is energized only at zeroizing. Each member 25 has two inclined surfaces 25<a> 25<b>, which co-act for additive or subtractive transfer with a lug 32<a> on the wheel 32 of next lower denomination. Thus when a wheel 32 passes through " O " the member 25 is moved right or left and moves the abutment 22a or 22b right or left, Fig. 2, causing the pawl 21<a> or 21<b> to move the appropriate ratchet 20<a> or 20<b> one tooth. Zeroizing-mechanism.-Loose on the shaft 32<b> of the wheels 32, Fig. 2, and rigid with a disc 41<a>, Fig. 15, is a wheel 41 which meshes with a fixed sector 42. The disc 41<a> carries a pawl 43 meshing with a ratchet 44 connected to the shaft 32b by pin and slot 44<a>. When the type wheel frame 38 is raised the wheel 41 rotates 360‹ and the pawl 43 rides idly. On the return movement the pawl picks up the ratchet 44 and rotates the shaft 32<b>. At the same time a lateral cam on this shaft moves over a fixed surface and moves the shaft laterally so that pins on this shaft pick up pins on the wheels 82 and return them to zero. During this operation a magnet is energized to move the frame 39 at right angles to the plane of the paper so that the transfer parts 25 are disengaged.