Patent GB-1345887-A (GB)
Title: Business machines
IPC: G06C7/00
Filed: 1971-06-22
Abstract: 1345887 Transfer mechanism LITTON INDUSTRIES Inc 22 June 1971 [26 June 1970 (2) 14 Sept 1970] 28415/72 Divided out of 1345886 Heading G4D The business machine disclosed in the parent Specification includes an accumulator 400, Fig. 11, comprising two sets of interleaved numbered wheels 401, 403, 405 ... and 402, 404, 406 ... for registering grand- and sub-totals respectively. A plate 412 normally prevents viewing of the grand total wheels but is shifted upon operation of the machine lock (not shown) to permit viewing. During the second part of each ADD cycle, the accumulator is lowered to bring pinions 813, 812 associated respectively with the two sets of wheels, into engagement with the rows of transmission element perforations 64, 66 respectively. During a TOTAL cycle, the accumulator is shifted to the right (as viewed in Fig. 7) to transfer the amount registered in the sub-total wheels to both sets of indicator wheels; the tape drive gears 246, Fig. 7, drive the indicator gears, which in turn drive the accumulator pinions through gears 309 during this operation; a mechanism, Fig. 20 (not shown), stops each accumulator sub-total wheel in its "zero" position and this in turn disengages the tape drive gears 246. The accumulator shifting mechanism, Fig. 14, includes a box-like frame 464, between opposite walls of which a timer gear 460 is located. Frame 464 is shifted upon operation of ADD/ TOTAL key 450 and carries on its opposite walls pins 504 and 502 (not shown), which interact with axially-acting cam slots (506-514, Fig. 16, not shown) to axially shift the timer gear 460. Subsequent rotation of the timer gear then either rotates eccentric 472 and another eccentric (not shown) associated with gear 474 to vertically position the accumulator frame470 for ADD operation, rotation of a gear 473 being prevented by a flat associated with the gear 473 co-operating with a raised portion of the timer gear, or rotates gear 473 and an associated eccentric (not shown) to horizontally position the accumulator frame for TOTAL operation, rotation of the first two eccentrics being blocked at this time. The axially-acting cam slots of the timer gear act on the pins carried by the frame 464 to automatically return the latter to its neutral position at the end of an ADD or TOTAL cycle. Accumulator carry mechanism, Fig. 26.-Each accumulator wheel has a low cam portion 822 and a high cam portion 824. When the units order wheel moves from "9" to "0", cam 824 rocks a bail 802, which is then held (with its hook 808 in the path of pins 810<SP>1</SP> of the tens order wheel) by a latch 828. On returning the accumulator to its neutral position, the hook 808 effects a carry into the tens order. If the tens order had been in the "9" position when the units order moved from "9" to "0", then bail 802<SP>1</SP> would have been rocked by the low cam 822 of the tens order wheel, and a wedge 832 when moved towards the bails would, instead of passing over arms 835 and 837 of bails 802, 802<SP>1</SP> respectively, have pushed between these arms to rock bail 802<SP>1</SP> further until it was held by latch 828<SP>1</SP>. On returning the accumulator to its neutral position, a carry into the tens order and into the hundreds order would have been effected.