Patent GB-473346-A (GB)
Abstract: 473,346. Calculating - machines. TRIGGS, W. W. (Underwood Elliott Fisher Co.) April 9, 1936, No. 10485. [Class 106 (i)] In a calculating-machine totalizer in which some of the numeral wheels (e.g. a tens-ofshillings wheels) have several zero-registering positions, the operation of the zeroizing means re-sets the transfer mechanism and withdraws the transfer devices from co-operating position with respect to tripping means on the multiplezero registering wheels while the zeroizing is effected. The totalizer, Fig. 1, is detachably secured to a bar 4 and is moved step-by-step relatively to a master wheel 20. The totalizer pinions 15 for pence and farthings denominations are mounted on a shaft 22 and are larger than those for the pounds and shillings, which are mounted on a shaft 21. The pinions are connected to their respective numeral wheels 8 by gears 18. Transfer mechanism. When a pinion 15 passes through a transfer position a projection on the pinion rocks a lever 44 pivoted at 26 to break a toggle joint comprising a lever 39 pivoted at 36 to the lever 44 and at 37 to a lever 32, 38 itself pivoted at 33. A spring 31 thus rocks the lever 32 and hence the lever 44 so that a transfer member 27 and a detent dog 28 pivoted to the lever 44 are brought within the range of the next higher pinion 15, the transfer member advancing the higher wheel and the dog then locking the wheel. The tripped members are restored as the totalizer moves to the next denomination, a fixed cam pushing a rack 49 to the right to rotate a pinion 50 and sector 52 connected through a yieldable connection 55 to a lever 54 linked to arms 47 carrying a restoring bail 48 which engages the ends 38 of the levers 32 and re-sets the toggle joint 36. Zeroizing-mechanism. Zeroising is effected by moving a lever 60, Figs. 1 and 12, first anticlockwise and then clockwise about its pivot 59. The lever 60 is connected to a segment 62 engaging a pinion 61 on the shaft 21 of the pounds and shillings pinions. This shaft has a groove 67 which engages pawls pivoted inside the pinions 15 and returns these pinions to zero in known manner. The shaft 21 is connected to the shaft 22 by gearing 64, 65, 66, the shaft 22 having a groove 68 for zeroizing the farthings and pence pinions 15. It is necessary to restore any tripped transfer members before the commencement of the zeroizing movement of the pinions 15 and the zeroizing lever 60 is accordingly provided with a cam part 70 which engages an arm 71 pivoted. at 72 and contacting with a pin 52<1> on the sector 52 of the transfer-restoring mechanism. The zeroizing lever 60 is connected to the sector 62 by a pin-and-slot connection 73 so that the transfer-restoring cam 70 acts before the zeroizing sector 62. The cam 70 is so arranged that, at the end of the anticlockwise movement of the lever 60, it escapes past the arm 71 and this arm then returns to normal position, and then, on the return clockwise movement of the lever 60, this cam again actuates the arm 70 and the transfer-restoring mechanism. All the transfer members are tripped as the pinions 15 turn to zero and this second actuation of the transfer - restoring mechanism re-sets these tripped members. The farthings wheel and the tens of shillings wheel have three and five transfer points respectively and it is accordingly necessary that, since they may be given a complete rotation during zeroizing, that the levers 44 in these two denominations be withdrawn from the range of the transfer projections on the pinions. To this end, these levers comprise slidable members 76, Fig. 21, mounted in grooves 77, Fig. 20, in heads 24 pivoted at 26. The corresponding levers 32, Fig. 1, have ends 38<1> which are engaged by the restoring bail 48 before the ends 38 of the normal levers 32. The former two levers 32 are thus " over-restored," the extra movement being allowed by the levers 44 sliding in their grooves 77 against the action of springs 30, the levers 44 thus being moved beyond the reach of the transfer projections or the corresponding pinions 15. Specifications 5206 /07, [Class 106], 261,916 and 262,919, [both in Class 106 (i)], are referred to.