Patent GB-191400831-A (GB)
Title: Improvements in or relating to Accounting Systems.
Inventor: DICKER STANLEY GORDON SINCLAIR
Filed: 1914-01-12
Granted: 1915-02-11
Abstract: 831. Dicker, S. G. S., [Heath, W. R.]. Jan. 12. Adding and subtracting apparatus with separate sections for summing and subtracting positive and negative items.- In a calculating - apparatus adapted to reproduce the operation of book-keeping, means are provided whereby, upon setting up a journal entry to be printed on a journal recordstrip, the amount is automatically registered in any selected pair of ledger counters. The general arrangement is shown diagrammatically in Fig. 1. The numbers of the selected accounts are set up on the type-wheels of the debit and credit selectors 24, 25, which, by means of gearing 24<a>, 25<a>, move brushes 26, 28 over commutators 27, 29, and thereby put in circuit, through one of each of wires 74, 80, the corresponding pair of ledger registers marked 1, 2, 3, 10, 11, 'Assets,' &c. Each of these registers comprises a pair of electro-magnets 50, 51 actuating a step-by-step counter, negatively or positively respectively. The journal itemprinter 30 comprises a series of type-wheels which are set to the required amount by turning the crank 31 once for each unit, for example 125 times tor an amount of$1.25. For large amounts, a 'master machine ' may be used to effect this setting. At each revolution of the shaft 33, the commutator segment 70 contacts with the brush 71 and causes an impulse to flow through the battery 72, wire 73, brush 26, and wire 74, to the subtracting-magnet 50 of the selected debit ledger register, say No. 1, thence by the wire 75 to the 'Assets' subtracting-magnet 50 and back by way of the wires 76, 77 to the 'Assets' adding-magnet 51, and by the wires 78, 79 to the adding-magnet 51 of the selected credit-ledger register, say No. 3, returning by the wire 80 through the credit commutator brush 28 and wire 81 to the commutator 70. The 'Assets ' register in this example will not have been altered, both of its magnets having been affected. The entry is then printed on the record-strip 22 by pushing in the knob 34, whereby contact is made between the disk 39 and the spring 40, the electro-magnet 21 is energized, and the printing-platen 20 is raised sharply against the typewheels. The ascent of the platen effects contact between the points 44, 45, thereby closing a circuit passing through a pivoted armature 35<1>, which is thus removed from the path of the spindle 36 of the item-printing wheels so that the knob 34 can then be pushed completely to the left for resetting purposes. Counters actuated by electric and magnetic means; registering difference of positive and negative actuations.-The units-wheel 66 of each ledger counter, Figs. 2 and 3, is actuated in a positive or negative direction through differential gearing 67, by means of one or other of two pawls 59, 63 pivoted to the armatures of electromagnets 50, 51 and acting on the ratchet-wheels 60, 64. The wheel 60 is mounted on a hollow shaft 61, and the wheel 64 upon a separate shaft 61'. Thus, if both magnets are simultaneously energized, no actuation of the counter takes place.