Patent GB-193455-A (GB)
Abstract: 193,455. White, A. E., (Burroughs Adding Machine Co.). Oct. 21, 1921. Column - printing arrangements. - In an adding and listing machine provided with carriage - controlled means for varying the functions of the machine, the control of those means bv the tabulating movements of the carriage can be altered at will, by a single adjustment so as to meet the requirements of the accounting system in use. Fig. 5 shows a sample of work performed by the machine. The customer's statement sheet B and the ledger sheet A are placed side by side in the carriage and the customer's balance (500,00.) is set up and printed in the right hand column of A. Assuming this to be a debit balance, and that two further debits are incurred these are entered in the left hand column of B and also of A and are added to the debit balance standing on the totalizer. A total (1068.10) may now be taken and printed in the two right-hand columns of A. Supposing two credit items are next to be entered the necessary single adjustment of the controlling elements on the carriage is made whereupon the machine proceeds to enter the items in the credit columns of B and A and to subtract them from the adverse balance total, thus arriving at the new debit balance of 20.53. In certain columns the date is printed and in others the date and the folio number and special mechanism is employed for eliminating the printing from the type groups not required. Arranged upon a longitudinal bar 10 of the paper carriage 8 are a number of invariable rollers 71, 73, 74, 75 and three sets of adjustable rollers F.G.H. As the carriage moves along, all the rollers are adapted in turn to control the positions of four levers 4, 5, 6, 7 connected respectively with the subtraction non-add, repeat and non- print control mechanisms of the machine. The roller sets F.G.H. each consist of two or more sections and are adjustable axially to engage selectively with the control levers 4, 5, 6, 7, by means of a slide 50 which can be placed in either of two positions (debit and credit) and so, through crank arms 32 and cam surfaces 33. force the rollers to occupy an inner position or allow them to slide axially under spring action to an cuter position in which they act upon a different combination of control levers. In Fig. 10 there is shown a main roller having with two grooves 27, 28 for bearing on the levers and a smaller grooved portion 29 which in one position can function to depress lever 7 to a certain extent but in the other position namely, that shown, is telescoped within a large diameter roller 30 capable of depressing lever 7 to a maximum degree. The machine is further provided with a tally-roll as described in Specification 22194/14 and the throwing into action of this roll is controlled by one or other of two tappets 77c, 77<d>, Figs. 6 and 13, mounted upon the usual tappet rod 9 of the carriage.. When the slide 50 is shifted an extension 79 engaging between two ears 78c on a subsidiary slide 78 moves the latter so that its notches 78<a>, 78b rotate the tappets 77c, 77d, one into, and the other out of, effective position for operating the tally-roll carriage. The control lever 4 is connected by its hub with a bell-crank lever 81 carrying a pin engaging a notch in a link 87 pivoted to the lever 88 corresponding with the lever for changing from addition to subtraction and vice versa described in Specification 9102/13, [Class 106 (i), Calculating &c.]. The rear end of link 87 may be lowered to break the connection with the pin of lever 81 by depressing either of the usual " normal " keys. The control lever 5 is connected by a lever 102 with a pivoted arm 105 which is adapted, when lever 5 is depressed, to rock a lever 107 so as to position its lower end in the path of the wiper pawl 821. The latter is thereby prevented from engaging the rear stud of the lever 913 and consequently the totalizer frame is left in its forward or disengaged position. Depression of lever 6 in conjunction with " repeat " key 120 prevents the release of the keys at the end of an operation and allows the motor to repeat the operation. Means are provided for preventing a repeat operation of the machine until the carriage has arrived in its next columnar position Hammer-impression arrangements.-The lever 7 controls means for preventing the effective action of one or more grouns of the impression hammers and is automatically depressed to varying degrees by the differently-dimensioned rollers. Couplings as described in Specification 20045/09, [Class 106 (i), Calculating &c.], are utilized for disabling the hammer mechanism according to the method described in Specification 4991/10, [Class 106 (i), Calculating &c.] , wherein the hammer latches are released before the operation of the machine. commences so that there is no hammer percussion. In the present machine, there are three groups of tvpe-carriers, namely, for the month and day, the folio number, and the amount. In the first group, the necessity for avoiding cipher printing in the tens place requires the absence of an overlapping tail from the month latch but both latches have coupling devices so that tripping the middle or tens latch produces tripping of the other two. This middle latch is connected to a pitman having a pivoted catch 717b, Fig. 18, provided with a lateral stud 717<d> adapted to co-operate with a pitman 717<e> connected to the first latch. The first latches of the folio group and amount group are similarly provided with a pitman and catch and all three catches are arranged when depressed to engage a shoulder thereon with a rocking bail 160 so that when the machine operates this bail moves, those pitmen having their catches depressed and trips the corresponding latches. The selective depression of these catches is derived from the control lever 7 through a rod 170, Figs. 18 and 20 which is rotativelv set bv connection with the lever and has three sets of lugs 170a, 170<b>, 170<c> arranged as shown. The rod has a pinion 170d engaged by a rack 182 which is connected with the lever 7 and is aligned in set position by a pawl 195, Fig. 18, controlled by a reciprocating part of the operating mechanism. Specifications 18628/06, 1810/08, and 25588/11 also are referred to.