Patent GB-428793-A (GB)
Title: Improvements in or relating to multiplying machines
IPC: G06F7/46
Filed: 1933-11-20
Abstract: 428,793. Statistical apparatus. BRITISH TABULATING MACHINE CO., Ltd., Victoria House, Vernon Place, Southampton Row, London. Nov. 20, 1933, No. 32335. Convention date, Nov. 21, 1932. [Class 106 (i)] A record-controlled multiplying-machine is provided with a printing-mechanism and a control means operable automatically after each product has been obtained to connect the printing-mechanism to the accumulator whereupon the product is read-out and printed. Additional control means may be provided to connect the printing-mechanism to the factor registers to print the multiplier and multiplicand. The card-handling section, the multiplying-mechanism, and the product-punching mechanism are of the type described in Specification 405,031. A shaft 56, Fig. 1, driving the various units of the machine is adapted to drive the shafts 148, 164 of the printing -mechanism when a corresponding one revolution clutch mechanism is energized. The shaft 148 drives a set of card feed rolls 150, 151, Fig. 2, and a picker 154 for feeding cards to the rolls ; the shaft 164 drives a cam shaft 166 actuating follower arms 168, 174, Fig. 3, adapted to displace the type bars 156 and hammer impression mechanism 158 repectively. The type bars are differentially arrested by pawls 171 under the control of selector electromagnets 172 related to the multiplier and multiplicand registers and accumulator. The registers are provided with reading-out mechanisms MPR02, MCR02, Fig. 4, additional to the reading- out mechanisms shown in the above-mentioned Specification and the accumulator has a reading-out mechanism LHRO similar to that of the prior Specification mentioned but of duplex character with two segments 258 and two brushes 254 for each denomination, one set for controlling product punching and the other set for printing. Circuit diagram. Depression of the start key 275 completes circuits to energize the record card feed clutch magnet 384. During the first card feed cycle the cards are advanced to a position ready to pass under the reading brushes and at the beginning of the second cycle the card contacts 113 are closed and the multiplier and multiplicand are read from the card. When printing operations are required the switch 422 is closed so that during the second half of this cycle the printing card or bill feed clutch magnet 423 is energized and a bill is fed to the printing position. At the end of this second cycle the first card is in the punching section and the card contacts 120 are closed and through related circuits energizes a multi-contact relay 2CR to close contacts 2CR 1-16 whereby impulses through an emitter 268 will be transmitted through the reading-out mechanisms MPR02, MCR02 and a plug board 425 to selector magnets 172. Concurrently with the emission of impulses the type bars 156 are moved forward and arrested on energization of the magnets 172. The clutch magnet 424 is then energized and the impression mechanism operated to impress the type on the bill. The machine proceeds with the multiplication and obtains the final product in the left hand section of the accumulator and resets the multiplier and multiplicand registers. The product is then punched on the card in the manner described in the above-mentioned Specification. The printing operation is under the control of the reset mechanism of the multiplicand register which closes contacts 273, 274 to energize relays one of which (relay D) switches in the emitter 267 and cuts out emitter 268 so that impulses are transmitted to the product selector magnets 172. The connections are made through a plug board 400 to sockets 426 and through contacts 3CR 1-16 of a multi-contact relay 3CR to a plug board 427. The relay D also closes contacts D-4 to energize the relay 3CR whereby the connections are completed. To suppress printing of the factors the plug connections at the board 425 may be omitted.