Patent GB-263955-A (GB)
Abstract: 263,955. Fischer, J. Oct. 10, 1925. Multifying-apparatus. - In a machine having means for setting both factors the differential actuating mechanisms are staggered relatively to one another by one decimal place and successively act upon the totalizing-counter thus obviating the necessity of a lateral shift mechanism. Means are provided for displaying the result of calculation and for adding and displaying the total of several calculations. In the form shown one factor is set by the depression of the keys in a segmental key board 62, Fig. 2, three banks being shown Fig. 1; the second factor is set by the adjustment of levers 8, Fig. 4, over a notched sector 7, two levers being provided. The key stems 64 when depressed project into the path of corresponding series of teeth 68 on a rotatable drum 65 which makes nine revolutions in each direction during a single calculation. During the first rotation the teeth 68 are moved axially so as to engage during the continued rotation a series of pinions 96 - - 98 and 99 - - 101. The movement imparted to these sets of pinions is transmitted by pinions 102 - - 104 and 105 - - 107 on shafts 108, 113 and sleeves 110, 110<1>, 114, 115 to corresponding pinions 109, 111, 112, and 116 - - 118 gearing with the denominational wheels 123 - - 125 (tensthousands) and 122 - - 124 (units-hundreds) respectively of the totalizing-counter, on the shaft 78. An additional wheel 119 is arranged on the shaft 108 and other pinions 120, 121 are provided on the shaft 113 for transferring purposes. Trans. fer mechanism of known form comprising a tooth 128, a lever 127 and actuating-toothed drum 129 is provided for the totalizing-counter. The pinions 96 - - 98 and 99 - - 101 are mounted on shafts 94, 95 adapted to be displaced axially to throw the pinions into inoperative, position after the completion of any one of nine revolutions of the drum depending on the adjustment of the setting levers 8. Each lever 8 has a hub 83 with a sector 84 carrying a slidable bolt 85. The bolts 85 bear on curved members 88, 89 on arms 90 91 pivoted to pins 86, 87 in a stationary sleeve 79, and the said members have lugs 92, 93 with which engage the ends of the spring pressed shafts 94, 95. The movement of the bolts to displace the shafts 94, 95 is effected by cam surfaces 143 and 144 on a disc 145 which receives a movement of 90‹ while the drum is rotating nine times. The disc 145 is driven from an oscillatory shaft 149 by gearing 146, 148. The shaft 149 is also operatively connected by gearing 150 - - 153 and a pawl 154 and ratchet wheel 155 to the totalizing- counter shaft 78 which is thereby rotated on the return movement of the shaft 149. This movement of the shaft 78 in known manner by resetting pins 156 effects the zeroizing of the totalizing-counter. To prevent rotation of the shaft 78 and thus enable successive products to be added the pawl 154 is rocked out of engagement with the ratchet wheel by a rotary cam-shaped member 199, Fig. 5 operated by a hand lever 200. The drum 65 is rotated by gearing 158 - - 160 from a sector 161 secured to the shaft 149. The sector 161 is connected by a pitman 220. Fig. 9, to a pinion 214 gearing with a pinion 212 on the main crank or motor operated shaft 211, the gearing being such that for three revolutions of the shaft 211 the pinion 214 makes one revolution and the shaft 149 executes an oscillatory movement of about 120‹. To indicate the result of a calculation a set of rack bars 132 are brought into engagement with the pinion 112. 111, 109, 110 at the completion of the nine forward revolutions by means of a bar 223 on an arm 204 of a shaft 222 operatively connected, to a cam 219 on the shaft 213 of the pinion 214. Movement of the racks 132 during the resetting of the totalizing-counter is transmitted by pinions 137, 138 to indicating drums 133 -- 136. The racks 132 are extended downwardly and engage the pinions 163 - - 166 of a second totalizing-counter for adding up the successive products. The totalizing-counter is provided with a known form of transfer mechanism actuated by a drum 174 loose on the shaft 149 and driven in one direction therefrom by a pawl 191 and ratchet wheel 193. To display the total on this second totalizing-counter a number of toothed segments 175 are thrown into engagement with the totalizer pinions on the initial movement of the zeroizing shaft 167 by means of a notched disc 178 thereon rocking an arm 180 on a shaft 181 which through another arm 183 moves to the right Fig. 8, the levers 176 to which the segments 175 are secured. The other ends of the levers 176 carry indicating segments 17 viewable through a slot in a screen 185 and aperture 16 in the casing. The segments 17 can be reset to zero by means of a bar 190 on arms 189 secured to a manually operated shaft 188. The adjusted teeth of the drum are restored to initial position on the return movement of the drum by means of pins 206, Fig. 2, on a rod 205 displaced laterally by means in operative engagement with a cam disc 218 on the shaft 214. A spring pressed locking bolt 207 controlled by the driving mechanism ensures the exact neutral position of the drum. The operating handle is also locked in initial position oy a pawl engaging a locking disc 221 on the shaft 213, the pawl being disengaged by depressing a key. Specification 241,867 is referred to.