Patent GB-1103659-A (GB)
IPC: G06C23/02
Abstract: 1,103,659. Mechanical calculators. ING. C. OLIVETTI & C. S.p.A. 8 Nov., 1965 [11 Nov., 1964], No. 47334/65. Heading G4B. A power-driving device for a calculating machine having a set of actuators 83 comprises a power cyclically operating main shaft 121 with cams controlling the actuators and normally adapted to operate at a predetermined speed sequentially with an auxiliary power cyclically operating mechanism 53, 153 and means 257 operable by the auxiliary mechanism under the control of a function control member 250 for causing the main shaft to be operated at a speed higher than the predetermined speed. As illustrated, shaft 121, Fig. 4, is operated at a predetermined speed by means of gears 126, 124, the latter being secured to a shaft 123 which is continuously rotated clockwise by an electric motor. Also attached to shaft 121 is a gear 119 adapted to engage with another gear 122 secured to the shaft 123 whereby when gears 119, 122 are engaged shaft 121 is rotated at twice the speed as when gears 124, 126 engage. The second mechanism comprises a sleeve 153 rotatably mounted on a shaft 53 and adapted to be bodily rotated therewith to effect an auxiliary cycle sequentially with the main cycle of shaft 121. Sleeve 153 is. provided with a set of cams adapted to control a set of machine functions e.g. for engaging and disengaging actuators 83, Fig. 1, and sectors 14. A pinion 127 attached to shaft 123 engages a pinion 128 rotatably mounted on a third cyclically operable shaft 129. The shaft 121 is provided with a set of normally ineffective cams (273, 274), Fig. 3 (not shown), adapted to cooperate with the various cam followers of the machine when the shaft 121 is moved longitudinally. These cams move bail 88, Fig. 1, to operate universal bars 87, 100 at a suitable speed. Upon rooking lever 250, Fig. 5, partially counterclockwise, bar 234 causes shaft 129 to effect one cycle. During the cycle, the lever 250 is rocked fully anticlockwise and through link 251 and the lever 252 displaces lever 257 in a vertical direction. The shoulder 259 is thus located in the path of the lug 261 on lever 262 while the shoulder 258 is located out of the path of lug 260. At the end of the cycle, a clutch (56, 57, Fig. 3, not shown) is engaged to cause a cycle of shaft 53 and sleeve 153. During the first part of this cycle cams 263, 264 rock lever 262 clockwise and lug 261 engages shoulder 259 and shifts lever 257 forwards. The lever 267 is rooked anticlockwise and shifts shaft 121 longitudinally. When a cam (166, Fig. 6, not shown) rocks a bail (168) clockwise together with lever 144, lug 152 of lever 144 is placed into the path of a clutch pawl (56) whereby shaft 53 is stopped and a lug (143) releases bail 138 whereby pawl 271 engages wheel 272. The shaft 121 is now rotated at a higher speed and the lever 144 is latched in the rocked position by latch 255, whereby at the end of the cycle of shaft 121 the clutch 271, 272 is not disengaged and clutch (56, 57) is not re-engaged. The shaft 121 thus effects a set of repeated cycles whereas shaft 53 and sleeve 153, as well as shaft 129, are prevented from being cycled sequentially with the repeated cycles of shaft 121.