Patent GB-395474-A (GB)
Abstract: 395,474. Transfer-mechanism. GUSTAFSSON, E. V., 95B, Regeringsgatan, Stockholm, and HELLGREN, G. H., Karlberg, Vallentuna, both in Sweden. April 19, 1932, No. 11203. [Class 106 (i).] In transfer mechanism for totalizers comprising two intermeshing pinions, either of which may be engaged with an actuator so that amounts may be added to or subtracted from the totalizer, the pinions may also be selectively engaged with a transfer member normally held in an inoperative position by two detents releasable by the pinions, the arrangement being such that when the transfer member for a second denomination is released by the preceding denomination, one of the detent members holding the transfer member for the third denomination is also released. The totalizer comprises numeral wheels 1, Fig. 1, attached to pinions 2 gearing with pinions 3, the whole being carried by a frame 4 pivoted at 5 to two arms 29 rockable about a fixed pivot 28. The pinions 2 are driven from sectors 6 for addition and the pinions 3 are similarly driven in subtraction, the frame 4 being adjusted by means not shown to decide the kind of calculation. The shaft 20 is rotated clockwise and has an arm 19 connected by a link 18 to levers 12 pivoted at 9 and attached to the sectors 6 by springs 10. When the levers 12 are rocked anticlockwise the sectors move until arrested by differentially set stops 24, and are returned by a common rod 15 attached to the levers 12. During this return motion the arms 29 are rocked by a cam 25 to engage the pinions 2 or 3 with the sectors 6. When a pinion 3 reaches the " 9 " position a pin on it depresses a cam 49, Fig. 6, on a locking lever 42 pivoted at 13. A detent portion 43 of the lever 42 is thus removed from the path of a projection 44 on a transfer lever 34, 35, Fig. 3. The further movement of the pinion 3 to the " 0 " position depresses a cam 53 on a second locking lever 41 pivoted to a detent lever 45, a detent 45a on which normally blocks the projection 44. This blocking is now removed and the transfer lever 34, 35 is swung forward by a spring 40 acting on a rack 37 pivoted to the transfer lever. The movement of the rack 37 is limited by the contacting of the lever 34, 35 with a rod 33, Fig. 1, carried by a frame 31 connected with the arms 29. The pinions 2 or 3 are normally in engagement with the racks 37 and when the pinions are returned into this engaging position after actuation, the racks 37 which have been moved forward by released transfer levers 34, 35 are dragged back by the swinging of the rod 33, thus effecting the transfer. The arm 35 of the transfer lever 34, 35 lies under the arm 45 of the detent lever 45 controlling the third denomination. Thus when a transfer is transmitted to the second denomination the detent 45a controlling the third denomination is moved from its active position, a consequent transfer then taking place if the second denomination stands at " 9." In subtraction, similar pins on the wheels 2 depress other cams 50, 54 on the detent levers 42, 41. In a modification, Figs. 8 and 10, a detent lever 55 pivoted at 13 has two cams, 56, 56a. The first cam 56 is depressed when the numeral-wheel pinion reaches the " 9 " position, a detent 58 thereupon being withdrawn from contact with a projection 44 on the transfer lever 34, 35. The movement of the pinion to the " 0 " position causes the lever 55 to contact with a projection 62, Fig. 10, on a second detent lever 59 and thus to remove a detent 61 away from the projection 44. The transfer rack 37 is then released and moved as previously described. The projection 44 of the second denomination overlies an arm 63 of the lever 59 controlling the third denomination, this lever 59 being rocked on the occurrence of a transfer to the second denomination to allow of a consequent transfer. In a further modification, Figs. 12 and 16, a cam 71 on the shaft of the lower numeral-wheel pinion 3 depresses a lever 42 when the pinion reaches the " 9 " position, thereby moving a detent 43 out of the path of a projection 44 on the transfer lever 35. Movement of the pinion 3 to the " 0 " position then depresses a cam 53 on a lever 45 and removes a lip 45a away from the projection 44, whereupon the transfer lever 35 moves by spring action. A mutilated rack is pivoted to the lever 35 at 34a to advance the numeral-wheel pinion when the lever 35 is restored bv a rod connected to the arms 29. The pivot 34a is extended so that it can depress an arm 75 of the lever 45 controlling the third denomination to remove the lip 45a from the projection 44 of the third transfer lever 35 and so condition this lever for a consequent transfer. The levers 42, 45 have other cams for use in subtraction.