Patent GB-1297157-A (GB)
IPC: G06C15/04
Filed: 1969-11-12
Abstract: 1297157 Selection of totalizers SVENSKA DATAREGISTER AB 12 Nov 1969 [23 Dec 1968] 55345/69 Headings G4B and G4T A cash register or calculating machine having a totalizer shaft 2 (Fig. 1) that carries at least two totalizers I, II which can selectively be moved into engagement with actuators 8a, comprises first and second control means for longitudinal axial movement, and movement towards the actuators, respectively, of the totalizer shaft. When totalizer selecting means 4; 6 are activated the shaft is moved towards the actuators, and is simultaneously moved axially if the selected totalizer is not in line for engagement with the actuators. Totalizers I and II are formed from a number of toothed wheels that are rotatably mounted and paired on the shaft 2. Actuators are in the form of racks 8a and are mounted above shaft 2 for performing adding, resetting or reading operations depending upon the horizontal positioning of slides 18 and 20, by a rod 92. The slides are positioned centrally in Fig. 1, and totalizer II is directly below the racks 8a. Selecting totalizer II.-Depression of a key 6 to select totalizer II begins a rotation through 360 degrees of the main machine shaft 66 and an attached cam 112. Through a cam follower 114 and lever arms 118 and 132, a slide 96 is moved to the left under the action of a spring 98, until a projection 96d co-operates with the key shaft 6a. This positions (Fig.2) a bevelled projection 96g above but horizontally displaced from a stop 138a depending from the totalizer shaft 2. A second cam 90 (Fig. 1) on main shaft 66 rocks an arm 86 to allow a slide 12 to move upwards under the action of a spring 28, a second slide 10 being held down by the key shaft 6a in the example illustrated. Third and fourth cams 82, 72 move slides 78 and 56 to the left. A fifth cam 64 moves a slide 54 to the left so that a projection 54a rocks a coupling link 32 that is rotatably mounted on the plate 10. The link 32 rotates a rod 36, link 52 and rod 50, and thence cams 46 and 48 (Figs. 1 and 2); the cams are followed by pairs of rollers 38a, 38b and 40a, 40b respectively, that vertically raise plates 38 and 40 and the attached totalizer shaft 2 towards the racks 8a. After totalizer II has been actuated, the slides 56, 54, 78, 96 and 12 are successively returned to their original positions by their respective cams, with a projection 78a on the slide 78 rotating the rod 36 to lower the totalizer shaft 2 vertically. Selecting totalizer I.-Subsequent depression of a key 4 (Fig. 1) to select totalizer I for actuation causes rotation of main shaft 66 and successive movement of slides 96, 12, 78, 56 and 54. Because projection 96d and key shaft 6a do not co-operate in this case, the slide 96 moves fully to the left to position a bevelled projections 96f (Fig. 2) above a stop (138b) (Fig. 3, not shown) that depends from the totalizer shaft 2. On the vertical, upward movement of the totalizer shaft 2, the stop (138b) co-operates with and slides along the bevelled projection 96f, so simultaneously moving the shaft 2 axially to align the totalizer I and racks 8a. After actuation, the totalizer shaft 2 is lowered vertically so that the racks 8a and totalizer I remain in line. Further depression of key 4 will produce vertical raising only of the shaft 2 because projections 96f and stop (138b) are now horizontally displaced. Depression of key 6 following key 4 will position the bevelled projection 96g above the stop 138a to produce vertical and axial movement simultaneously and realign totalizer II with the racks 8a. Several such totalizer shafts 2 may be arranged in the machine together with associated slides 10, 12, 96 and stops 138a (138b). More than two totalizers may be mounted on each shaft 2, and provided with a corresponding number of stops 138a, (138b) and projections 96f, 96g that are bevelled at different angles.