Patent GB-438686-A (GB)
Title: Improvements in or relating to record-card-controlled statistical machines
Filed: 1934-12-28
Abstract: 438,686. Statistical machines. BRITISH TABULATING MACHINE CO., Ltd., Victoria House, Vernon Place, Southampton Row, London. Dec. 28, 1934, No. 37174. Convention date, Dec. 30, 1933. [Class 106 (i)] A record-card-controlled statistical machine comprises a number of control devices (e.g. relays 85 and 86) each operable successively in successive cycles to initiate a separate operation by the machine and means actuated by an indication on a card (e.g. special " X " hole in column 22 or in column 80) to decide whether each control device shall operate during the succession of cycles. In the machine shown the separate operation by the machine consists in transmitting an amount from one counter (e.g. counter No. 1) to another counter (e.g. counter No. 3). The machine is of the kind described in Specifications 422,135 and 422,179 and is structurally similar to the machines of these Specifications. For the operations shown in Fig. 2 the fields "Net Bill," "Net Tax," and " Arrears " on the cards are used. The net bill amount always is added to counter No. 3-ACC 3, Fig. 2, If there be an " X " hole in column No. 22, when this hole is read by the upper brush UB, Fig. 1, a magnet 87 is energized to close contacts 87a and add the net tax amount to counter No. 1- ACC 1, Fig. 2. When the same " X " in column No. 22 is read one cycle later by a lower brush LB, relays 124 and 85 are energized to close contacts 85a, Figs. 2 and 1a, and transmit the amount from counter No. 1 to counter No. 3. Similarly, for an " X " hole in card column No. 80, relay 88 is energized at the upper brush to close contacts 88a and transmit the arears amount to counter No. 2 and at the lower brush the same hole energizes relays 129 and 86 to close contacts 86b, Figs. 2 and 1a, and transmit the amount from counter No. 2 to counter No. 3. If the amount on counter No. 1 is to be subtracted from that on counter No. 3, there is an " X " hole in column No. 79. This energizes a relay 143 so that, in the reading-out means shown in Fig. 1<a>, the contacts 143a, 143b are reversed from the positions shown so that the complement is transmitted from counter No. 1. Magnet 53 takes care of the " fugitive one." Similarly, to subtract counter No. 2 from counter No. 3, an " X " hole in column No. 21 energizes relay 143. When the net amount in counter No. 3 is printed, contacts 90a close and the amount is transmitted to a grand total counter No. 4. This latter total may be automatically printed when a major-group change occurs. In the circuit diagram, Figs. 1 and 1<a>, the position in the Figure of a part is located by reference to the horizontal divisions 0, 1 ... 9, and Oa, 1a ... 9a marked on the right of Figs. 1 and 1<a> and by dividing each hypothetical horizontal strip into left (L), centre (C) and right (R). Thus relay 85 is located in the centre of strip 4 in Fig. 1 and is referred to as 85 (4C) ; contacts 140b are near the right of strip la on Fig. 1<a> and are referred to as 140b (1aR). For counter No. 1 the 22nd brush UB is plugged to socket X22(6L) and the 22nd brush LB is plugged by wire 123 to socket 122 (5R). For counter No. 2 the 80th brush UB is plugged to socket X80 (6L) and the 80th brush LB to socket 128 (6R). For an X22 hole the magnet 87 (6L) is thus energized and closes contacts 87a, Fig. 2 to transmit the amount to counter No. 1. This occurs as the amount is read by the lower brushes LB, a holding circuit for magnet 87 being provided. Relay 88 (counter No. 2) is similarly energized for an X80 hole. As contacts 85a (3aC) and 86a(4aC) are normally closed, counter No. 3 receives its entry over circuit 85a, 118, 86a, 119 to counter magnets 44. A parallel circuit 120, 89a, 121, 131<a >energizes the printing magnets 36. As an X22 hole passes the lower brushes LB(8R) a circuit 123, 122, F6, 124, 114 energizes the relay 124 ; the latter closes contacts 124<a> to hold itself energized and closes contacts 124<c> (4R) and opens contacts 124b (3R). For an X80 hole, a circuit LB, 128 (6R), F5, 129, 114 energizes a relay 129 ; the latter closes contacts 129<a> to give a holding circuit and closes contacts 129b (3C). Contacts 124<c> (4R) energize magnet 85 which reverses contacts 85<a> and 85b (Figs. 1<a> and 2) and from the reading-out commutator 75 a circuit 76, 51 (counter No. 1), 50, 52, 132, 85b 118, 86a, 119, energizes the counter magnets 44 of counter No. 3 to transmit to the latter the amount standing in counter No. 1-represented by the positions of brushes 50 on the segments 51 of counter No. 1. Relay 124 (and magnet 85) is de-energized and opens contacts 124c (4C). It also allows contacts 124b (4R) to close and magnet 86 is next energized over contacts 124b and 129b to reverse the contacts 86a and 86b (Figs. 2 and la) and transmit the amount on counter No. 2 to counter No. 3. Subtraction.-Lower brushes LB reading card columns Nos. 21 and 79 are plugged to sockets X21, X79 (OaR) so that if an " X " (subtraction) hole is read in column No. 21 or 79 the magnets 140, 141, and 143 (laC) are energized to reverse the connections 143a, 143b from the reading-out device 75 (9aR) whereby the amount is added from counter No. 1 (or No. 2) into counter No. 3 in complementary form.