Patent GB-392181-A (GB)
Abstract: 392,181. Calculating-machines. BURROUGHS ADDING MACHINE CO., 2nd Avenue, Detroit, Michigan, U.S.A.- (Assignees of Muller, R. L.; 2nd Avenue, Detroit, Michigan, U.S.A.) Oct. 1, 1931, No. 27325. Convention date, Oct. 2, 1930. [Class 106 (i).] With several totalizers.-The totalizers are stored in a reel rotatable for selection of totalizer which is automatically transferred to a frame for the calculating operation and then returned to its position in the reel. The transfer to the frame takes place immediately upon depression of an amount key or the total key. The invention is described as applied to the Hopkins machine of Specifications 18058/07, 18320/08, 18321/08, and 18322/08, [all in Class 106, Registering &c.]. Totalizer storage. The totalizers each consist of a number of pinions 47, Fig. 6, strung on a sleeve adapted to be received on one of a series of tapered pins 45 projecting inwardly from the larger cheek 44 of a reel 40. The totalizers are retained in place by a fixed guard ring 54 broken away at one point to allow the chosen totalizer to slide off its pin into the calculating position, and at another point (bridged by a hinged strip 55, Fig. 3), to enable a totalizer to be removed for repair &c. While in the reel the totalizer pinions are maintained aligned and locked by bars 58. The reel tends to rotate counterclockwise, Fig. 3, under the pull of a spiral spring 60 and is moved under selective control as described in Specification 391,869. Shifting totalizers from and to the reel. The depression of an amount key effects, through shoulders 185, Figs. 15 and 16, on the thrust bars 32 and an overlying end 184 of a latch 181, the release of a shaft 177 carrying fixedly an arm 179 urged by a spring 178 and provided with an ear to propel a loose arm 176 to the right. This latter arm is pin-and-slot connected to a carriage 172 running between rails 174 and having a lug 171 to engage a collar on the selected totalizer. Thus, depression of the first amount key allows the carriage to move' across and draw the totalizer from its pin 45 on to another pin 155 supported in a frame 150, Figs. 3 and 6, arranged to rock up and down during operation of the machine, to engage and disengage the totalizer with the actuator tacks 37 under the timing control of the machine. The lever 176 remains in its displaced position throughout the calculating operation, being retained by a latch 190 engaging the end 192 of the lever. During the forward stroke of the machine a link 200 is positively lowered by the operating gear and this rocks the shaft 177 back again and stresses the spring 178, the shaft and arm 179 then being held by a further latch until latch 181 is allowed to become effective again. At the end of the operation latch 190 is rocked by the machine through a lever 213, Fig. 14, a stud 216 on which has been seized by a hook 217 connected with a link 222 engaging beneath the latch. When the lever 176 is thus released it returns to its original position and in doing so it restores the totalizer to its place in the reel and also releases the lever 179 in readiness for the next machine operation. Disabling totalizer-returning mechanism. If entries are to be entered successively in the same totalizer a bar 240, Fig. 1, partly overlying the starting bar 23, is used for initiating the several operations. Connected with the bar 240 is a lever 253, Fig. 14, adapted to slide a cam plate 225 (temporarily latched) so as to displace the hook 217 and thus break the connection between lever 213 and the latch 190. The latter is thus prevented from releasing lever 176 and consequently the totalizer remains in the frame 150. Return of the totalizer to the reel will occur at the end of an operation initiated by the ordinary starting bar. Action when total-taking. As no amount key is depressed in a total-taking operation provision must be made for the transfer of a totalizer from the reel to the frame 150 prior to the movement of the actuator racks. Consequently the total key does not move the totalizer into engagement but only conditions the connections for such action. The total key 280 is linked at 282, Fig. 14, with levers &c. terminating in an arm 290 pivoted at 291 to the link 161 serving to rock the frame 150. Depression of the total key therefore rocks the arm 290 to bring a stud 293 on it beneath an arm of a bell-crank lever 294 extending into the path of a stud 297 carried by an operating arm 298 on the main shaft 28. With the parts thus positioned therefore the link 161 is forced downwardly when the machine operates, so as to engage the totalizer with the actuators. The transfer of the totalizer to the frame prior to the machine operation is accomplished by the total key through a yoke 301 engaging beneath a link 303 carrying a pawl 304, Fig. 15, for raising the latch arm 184 to release the arm 179 to shift the totalizer. Interlocks. These are provided for the following purposes: (1) to prevent removal of the totalizer from the reel when this is not properly positioned, a cam-shaped lever 310, Fig. 3, then placing a hook 315, Fig. 15, beneath the arm 183 to prevent the operation of arm 176 ; (2) to lock the reel against rotation while a totalizer is in the frame ; (3) to prevent operation of the machine while a totalizer is between the reel and the frame ; (4) to prevent depression of keys and starting bars during carriage tabulation. The lever 213, Fig. 14, effects the tabulation by known means and is provided with a screwed pin 340 engaging a collar on a shaft 342. When the lever 213 is operated therefore this shaft is raised and through a link 344 &c. rocks a bell crank 348, Fig. 1, to insert a projection 349 into the ball crowding lock 350, thereby preventing depression of the amount keys and also of the starting bars. The bell crank 348 by its forwardly-extending arm also locks the total and other control keys; (5) to prevent key &c. depression during return of the reel. Lowering of link 119, Fig. 14, by either the carriage return key or the reel return key rocks a yoke 362 and raises the link 344 to lock the keys &c. as in (4).