Patent GB-434369-A (GB)
Abstract: 434,369. Calculating - apparatus. MERCEDES BUROMASCHINEN - WERKE AKT.-GES., Benshausen, Prussia. April 23, 1934, No. 12172. Convention date, April 24, 1933. [Class 106 (i)] In a calculating-machine combined with a typewriter and having a plurality of column totalizers mounted on a movable carriage and a number of stationary line totalizers, the timing of the cycle of operation of the totalizer engaging mechanism is controlled through a number of operation members or cams, any one of which is rendered effective by selectively coupling thereto a member associated with the engaging mechanism in accordance with the function to be performed, the direction of operation of the totalizer pinions being controlled by a second selection member co-operating with the engaging mechanism. In the form shown the selection members associated with the engaging mechanism for the column totalizers are manually set, while those associated with the mechanism of the line totalizers are set automatically under the control of members mounted on the column totalizers. The machine as shown in Fig. 1 comprises a typewriter 2 and a calculating machine 3 arranged adjacent thereto, the numeral keys 7 of the typewriter being provided with levers adapted to co-operate with the stop pins of a laterally movable carriage S, Fig. 11, in the calculating machine, which pins when projected serve as stops to determine the differential movement of slides U that are operatively connected to the arms 270 of driving sectors 268 that carry the differential actuating sectors 292, 293, 294 of the column totalizers V, and the line totalizers Q, Q1 ; the sectors 268 have arms 269 co-operating with the usual type bars. The column totalizers are detachably mounted on the rail 9 of the paper carriage while the line totalizers Q, Q are mounted on the casing of the calculating machine ; in the calculating position the numeral pinions of the column totalizer can be driven in one or other direction for addition or subtraction through a reversing mechanism settable from a neutral or inoperative position by means of a selectively settable totalizer engaging mechanism ; a similar form of reversing mechanism and totalizer engaging mechanism is associated with the line totalizers Q, Q1. Totalizer engaging mechanism. This mechanism is conditioned for operation by manually set control members 12, 13 for the column totalizers and by automatically acting means for the line totalizers, the means comprising control levers 108 ... 111 adjustably mounted on thecolumn totalizers, the arrangement being similar to that described in Specification 379,822. In addition to the members 12, 13 another control lever 14 is provided to reverse the action of the set members at will. The member 12 is settable to one or other side of a central or neutral position, shown in Fig. 3, for addition or subtraction ; the member 12 is carried on a pivoted lever 16 having projecting pins 26, 27 that co-operate with a control member 28 operatively connected by a linkage 52, 53, 55, 57 to the totalizer engaging member 59, the upper part of which is formed with recesses 61, 62 adapted to engage pins 64, 65 on the totalizer reversing mechanism 63 when the member 59 is moved to one side or the other of its normal inoperative position. If the machine is set for addition and it is desired to subtract an item from a desired totalizer, the lever 14 is depressed to rock a yoke lever 29 integral therewith. This lever is connected to the control plate 28 which is displaced to reverse the position of the member 59. The lever 29 is held depressed by a latch 38 on the lever 14 co-operating with a bar 40. The member 59 derives its movement from an arm 67. The arm 67 forms part of a composite member, Fig. 6a, comprising a member 68 embraced by the limbs of a member 71 and pivotally mounted on a shaft 69, the member 71 being carried by a pin passing through the member 68 to permit of movement in a plane parallel to the axis as well as at right angles thereto. The member 71 has an extension 96 adapted to co-operate with one or other of the ends of levers 97, 98, 99, Fig. 6, that co-operate through rollers with corresponding cams 103,104, 105 on the main drive shaft 106. The shaft 106 is driven by a motor 10, Fig. 1, through a one revolution clutch energized by a lever 11 and the rotation of the cams effects the reciprocation of the engaging member 59. The selection of the cam and corresponding lever to vary the engagement timing is controlled by the member 13. In normal entering operations the member 13 is in its lowest position so that the cam 103 is effective. The cams 104, 105 are rendered operative by raising the lever 8Q, Fig. 6, carried by the member 13 to the mid or upper position for total taking or sub-total taking operations. The lever 80 as shown is operatively connected by a link 83 and lever 85 to a notched slide 76 embracing the end 74 of the member 71 to effect its displacement ; the upper end of the link 83 is also connected to a yoke 93a that co-operates with the transfer levers 95 of the totalizer to lock them and ensure the totalizer pinions being arrested in the zero position. The engaging mechanism for the line totalizers is similar to that above described ; the main shaft 106, Fig. 9, carries corresponding sets of cams 141-143, 199-201 and levers 135-137, 193-195 that co-operate with composite members 128, 131, and 186, 189. The member 131 carries an arm 178 having a pin 177 projecting into a slot on a totalizer engaging member 159, the free end of which has recesses 161, 162, adapted to be moved to engage one or other of the pins 163, 164 that project from a member on a shaft 419, Fig. 11, carrying the frame of the line totalizer Q1. Pivoted on the member 159 is a latch member 169 with a shaped slot 170 engaging the pin 177. The part 128 of the composite member has a forward extension 127 that co-operates with a slide 126 operatively connected to a lever 113 the displacement of which is governed by the setting of the control lever 108 on the column totalizer. The lever 113 is also operatively connected to a yoke 122h that coacts with the transfer levers 303 to hold them against movement when the totalizer pinions are restored to zero in total and sub-total taking operations. The forward end of the member 159 is connected by a link 157 and yoke 154 to a control plate 150 similar to the plate 28. The second control lever 109 co-operates with a lever 114 to which is attached a link 144 connected to a plate 147 having pins 148, 149 that control the displacement of the control plate 150 and thereby determine the direction of movement of the totalizer pinions. The other control levers 110, 111 on the column totalizers are employed for controlling the engagement timing and direction of movement of the pinions of the line totalizer Q. The mechanism for this purpose is similar to that for the line totalizer Q1, the composite member co-operates with a slide 184, Fig. 9, and with a totalizer engaging member 215 which is connected to a control member 208 that coacts with the pins 206, 207 of a plate 205 operatively connected to a lever 116. The control plates 150, 208 are held in their adjusted positions by means of a bail member 245 adapted to engage one or other of the notches in plates 237, 238 ; the bail member is operatively connected to a lever 250 operated by a cam 253 on the main shaft 106. If it is desired to put the line totalizers out of operation during a series of calculations a push knob 15 is pressed in to displace a bar 259 to which is connected a lever 262 and yoke 263 with depending arms carrying pins 265, 266 that co-operate with the latches 169, 226 to free the pins 177, 228 which then move idly in the slots of the engaging members 159, 215. Differential mechanism.-The driving sectors 268 are supported by a bridge member 271 mounted on levers 272 provided with rollers engaging a pair of cams 277 on the main shaft and are formed with lugs which coact with projections on the differential actuators 292 ... 294. The actuators are normally held in contact with levers 301 ... 303 and are normally engaged by pawls 327 ... 329. The upwardly directed limbs of the levers 301 co-operate with the tens transfer levers 95, while the limbs 307, 308 of the levers 302, 303 have each a pair of projections to co-operate with the tens transfer teeth of the gear wheels of the line totalizers Q, Q1. On operation of the main shaft, the bridge member 271 is first moved clockwise in Fig. 11, whereby the driving sectors are moved differentially in accordance with the setting of the stop pins in the carriage S ; thereafter the totalizer engaging members are operated and the bridge member restored to normal position to cause the set value to be entered. Transfer mechanism.-Transfer between denominations of the totalizers is effected by allowing an additional movement to be imparted to the differential actuators. For this purpose in the case of the column totalizers, a transfer tooth 95g, Fig. 11, rocks a transfer lever 95 which by its engagement with the lever 301 raises the projection 298 thereof out of the path of movement of a nose of the differential actuator of the next higher denomination. The lever 301 is held displaced by the pawl 327. Near the end of the cycle of operation cams 340 on the main shaft rock a pair of levers 341 carrying a bail 343 which first rocks the pawls 327 to release the displaced levers 301 and on their return movement restore the differential actuators to normal position. Additional bails 344, 345 are provided on the levers 341 to co-operate with the totalizers Q, Q1. Printing totals and sub-totals.-In setting the machine for this purpose the handle 12 is placed in the " add " position and the handle 13 is set to the mid or upper position for totals and sub-totals respectively. The main shaft 106 is given one cycle of operation, the totaliz