Patent GB-172917-A (GB)
Abstract: 172,917. Giglio, G. de. Aug. 14, 1920. Adding-apparatus; multiplying by repetition; full-stroke mechanism.- In a machine of the differentiallv-set and independently operated type described in Specification 171,475, a number set up on the totalizer 28 bv positioning the sectors 14 may be repeated any number of times bv means of a secondary set of racks 66 which can be allowed to move forward to take up the differential setting of the sectors 14 and can then be locked so that by subsequently oscillating them as a whole, the number may be transmitted again through the sectors 14 to the totalizer. The racks 66 are pivotally mounted under spring control in a frame or carriage 68 which can be shifted laterally, one denomination at a time, by means of a key 63 connected by a lever 74 with a ratchet mechanism 71<1>, 64. The carriage tends to return to normal or units position by virtue of a spring 73, but is held in the required position by a detent arm 77, which, however, can be depressed to release the carriage either by the operative movement of the shifting pawl 64 or by a lever 78 adapted to be rocked by a pin 76<11> on an arm 76 pivoted at 76' and raised bv the forward movement of the zeroizing-lever 37. The carriage 68 is pivotally mounted on a rod 69 and at one end is provided with a pin 92 projecting through the side of the casing 19 into an L-shaped slot 90<1> in a pivoted sector 90, adapted to gear with a sector 89 fast on the shaft 69, which is rooked by the multiplying-lever 88. The racks 66 are locked in the positions determined by the setting of the corresponding sectors 14, bv means of a plate 84 pivoted in the carriage at 84<11> and rocked to engage with its edge 84<1> the toothed edges of the racks 66. This rocking movement is effected by a lever 93 which engages in one end of an arm 94 secured to the pivotal axis of the plate 84, and is provided with a pin 93<1> projecting into an L-shaped slot 98<1> in a pivoted arm 98. As the multiplying-lever nears the end of its forward stroke, a projection 100 on the sector 89 displaces the arm 98 and consequently rocks thelever 93 so as to depress the edge 84<1> into engagement with the racks 66. These parts areretained in position by a spring-controlled bellcrank lever 95 provided with two positioning notches 95<11> for the lower end of the lever 93. As the multiplying-lever continues its forward stroke, the arm 98 is released by the projection- 100 and the carriage rocks back to normal posi. tion under the action of its spring 87. After the commencement of the return of lever 88, a shoulder 89<1> on the sector 89 prevents its forward movement again until the rearward stroke has been completed. When the zeorizing lever 37 is operated, the pin 76<11> on the arm 76 engages the tail of the lever 95 and so releases the lower end of lever 93 and allows the plate 84 to rise from engagement with the racks 66, which then return to normal position. The transfer-effecting and sector-restoring operations of the bar 13 are derived during multiplication from the movementsof the lever 88 through a lever 103, which is rocked by a nose 101 on the return stroke so as to depress a pin 105 on one of the supporting- arms of the bar. Rocking movement of the carriage 68 during restoring of the racks 66 to normal position is prevented by a lever 109 bearing at one end on the pivoted arm 76 and projecting- at the other into the path of the pin 92. Specification 173,195 also is referred to.