Patent GB-424149-A (GB)
Title: Improvements in or relating to release control mechanism for calculating machines, accounting machines, and similar machines
IPC: B41J11/48
Filed: 1933-08-15
Abstract: 424,149. Typewriters &c. NATIONAL CASH REGISTER CO., Dayton, Ohio, U.S.A.- (Assignees of Christian, R. A. ; 246, Telford Avenue, Dayton, Ohio, U.S.A.) Aug. 15, 1933, No. 8690/34. Convention date, Jan. 27, 1933. Divided out of 424,132. [Class 100 (iv)] Column-printing arrangements; line-spacing mechanism.-In a calculating or like machine having a travelling platen-carriage and releasecontrol means comprising a tabulating motorbar and a line-spacing motor-bar, a controlmember is provided, which is normally rocked to cause tabulation and prevent line-spacing and is adapted to be obstructed by the linespacing motor-bar to produce the reverse effect, or by a control-lever which obstructs the control - member whichever motor - bar is depressed. In the mechanism shown in the Figure, the machine is driven through a clutchmechanism which is adapted to be engaged by the forward motion of an arm 347. The arm is urged in this direction by a spring, but is restrained by a stud 344 lying beneath an offset part of a lever 345 connected to the arm 347. The stud 344 is carried by a three-armed lever 341, adapted to be rocked clockwise to release the machine by either of the two motorbars 199, 360. The motor-bar 199 has two legs 200, 201 pivoted to a lever 197 which is pivoted to the lever 341 at 343, and directly to the lever 341 at 340. The bar 360 has a leg 361 slotted at 362 to engage the stud 340. Depression of the tabulating motor-bar 199 releases the motor for operation and also depresses, through the pin 340, a link 379 which is provided with a slot engaging a pin 375 on a two-armed lever 376. A lever 382, loose on the pivot 377 of the lever 376, is pressed against a pin 381 on an arm 380 of the lever 376 by a spring 401. The lever 382 engages a pin on an arm 384 which in its turn engages a latch 387 pivoted to an arm 388. When the link 379 is depressed, the lever 376 is rocked anti-clockwise by a spring 378 and the arm 384 is moved forward, thus moving the latch 387 to an ineffective position. At the same time, the arm 380 rocks a lever 411, thus removing a shielding-hook 413 from around a pin 414 carried by a tabulating-lever 415. During the cycle of operation, a link 145, adapted to rock a shaft 143, makes an upward and downward movement. A spring-pressed pawl 416 carried by the link 145 engages the pin 414 and, during the downward movement operates the tabulating-lever 415, thus tabulating the machine. When the line-space controlbar 360 is depressed, the machine is released as before, but the lever 376 cannot rock, since a pin 370 on the leg 361 rocks a lever 372, thus placing a projection 374 under the pin 375. Consequently the hook 413 shields the pin 414 and tabulation is not effected. At the same time, a pin 395 on an arm 394 fast to the rocking shaft 143, engages a recess 396 on the latch 387, which in this case is not disabled, and, on its upward movement depresses the line-space hook 392 through levers 388, 390 and a link 391. A control-lever 422 is pivoted to the frame of the machine and is provided with projection 425 which, when the lever is rocked, is placed below the pin 375. The machine will then be line-spaced but not tabulate whichever control-bar is depressed. Specification 28253 /08, [Class 100], is referred to.