Patent GB-613600-A (GB)
Title: Improvements in or relating to paper feed mechanism for accounting and like machines
Filed: 1946-08-29
Abstract: 613,600. Typewriters &c. REMINGTON RAND, Inc. Aug. 29, 1946, No. 26054. Convention date, Sept. 13, 1945. Addition to 587,836. [Class 100(iv)] [Also in Group XIX] The paper-feed mechanism for a power-driven accounting-machine as claimed in the parent Specification is modified in that a linefinding drum geared to the paper-feed mechanism and connected with the power drive through a normally open clutch which is closed to initiate a feed of the paper and opened when the paper reaches a predetermined position, has a settable drive member carried by the clutch to engage, on actuation, an associated disc on the line-finding drum, and drive-member actuating-means including a tripper for the drive member, this tripper being settable preparatory to actuation of a drive member. The machine is generally of the type described in Specification 523,532, and although the means differ in detail, the feed of the paper is controlled substantially as described in the parent Specification. To enable certain feed movements to be imparted to the paper, several disabling connections in the linkages are manually adjusted. Most of the driving mechanism of the long feed for the paper is contained in a detachable unit having end castings. The driving gearing for this feed comprises a worm on a drive shaft meshing with a worm wheel 112, Fig. 7, on a stubshaft 113 making one turn during a machine cycle and driving, directly or indirectly, the main paper feed shaft 115, the main cam shaft 116, and a counter shaft 117. The shaft 115 rotates through 300 degrees and the shaft 117 makes a complete rotation during a machine cycle. The shaft 115 is co-axial with the shaft 113. By the use of rotatably mounted sleeves carrying gears, the stub shaft drives the shaft 115 through gears on the shaft 116, and the shaft 116 is driven from gears on the shaft 117 through gears on the shaft 115. This arrangement facilitates the accurate relative setting of the shafts 115, 116. Keyed to the shaft 115 is a five-notched clutch disc 137 on the hub 136 of which is journalled a drive disc 140 carrying a clutch-pawl 141. The disc 137 has a notch engaged normally by a detent arm 142, Fig. 2. Loose on the shaft 115 is an exchangeable line-finding drum 146 comprising a sleeve having notched discs 148, 150, 151, 152 and a gear 153 keyed thereto, this gear being adapted to drive the platen 97 through gearing 154, 156, 158. The gear 154 is fast on a hollow shaft 163, Fig. 3, fitted to slide on a polygonal shaft 155 to allow sliding adjustment of the platen carriage on its fixed rail 103. Gears 153, 154 are readily replaceable by others to suit the line-spacing and length of forms to be used. Each disc 148-152 on the linefinding drum is notched as at 1521, Fig. 2, for engagement by pawls on a pair of levers 166, 167, pivoted on the driving disc 140, and latched by a lever 171 pivoted on the disc 140, and tripping levers 175 pivoted on a fixed stud are adapted to trip the levers 171 to enable the pawls on levers 166, 167 to engage the discs 148- 152 to effect a long feed to the platen 97. Each tripping lever 175 is first moved to " set " position by means controlled by the type of machine operation, and given a second movement to unlatch the levers 171 by a universal bar 186 carried by an arm 187 operated from a cam on the shaft 116. A tail on the lever 175 during this second movement rocks a clutch dog 180 to release the clutch pawl 141 for engagement with the rotating clutch 137 so that the disc 140 is driven and the long feed initiated. The drive pawls 166, 167 are restored by a pivoted arm 196 rocked by a cam on the shaft 116. The tripping levers 175 are " set by several means. One means comprises Bowden wires in the translator, operated when a card having a control hole is sensed, adapted to rock pivoted levers 217. 216, 215 (not shown) to pull links 211, Figs. 2 and 6, which rock shafts 203, 204, 205. These shafts act through disabling means to lift rods 207 engaging extensions of the tripping levers 175. In the capacity feed a spring-urged rock or " capacity '' shaft 225, Figs. 2 and 3, has secured thereto arms 226, 227, and on arm 230 (not shown) adapted to be operated by a cam on the shaft 116. A latch 233 engaging the arm 226, releases the shaft for rocking movement by the said cam, and a nose on the arm 226 " sets " a tripping lever 175 cooperating with the line disc 152. When the drum 146 steps past a capacity line, the latch is tripped by an arm 240 on the drum tripping a spring-pulled finger 241 on the latch. The finger 241 allows reverse rotation of the drum. Line - spacing. - The usual line space ratchet wheel on the platen shaft is replaced by a ratchet 901, Fig. 3, on the hollow shaft 163 in the long feed unit driving the platen, this ratchet being operated by a line-space pawl 902 on a lever 904 rocked by a link 906 connected to the usual linespace shaft 908. The pawl 902 can be held out of contact with the ratchet 901 by a lever 932 controlled by a cam 934 on the shaft 117; this pawl is always disengaged when the machine is stopped. A shaft 933 has secured thereto the detent arm 142, Fig. 2, for the disc 140, and an arm 935 adapted to lift the pawl 902 during the long feed. A detent wheel 940 on the hollow shaft 163 moves a lever 942 adapted to rock the shaft 933 through a system of levers. Blank cycle mechanism.-This is modified as regards the means for pulling, retaining and releasing the link 351, Fig. 3, which is connected to the slam bail linkage of the total control mechanism. This link is adapted to be pulled to cause a blank cycle by a cam 357 (not shown) on the shaft 116, operating a lever 358. The link 351 is pulled by a link 361, operated by an arm 363 in the capacity trip shaft 225, so that a pin 360 can be engaged by the lever 358. Isolated total.-Means is provided to print the total, if desired, on some predetermined line at or near the bottom of a record form. An arm 383. Fig. 2, operatively connected by a disabling button 384 to a shaft 34 is connected by a pin and slot means to a link 386 pivoted on one of the tripping levers 175. When the shaft 344 is rocked early in the blank cycle of a totaltaking operation, the lever 175 is rocked to " set position and subsequently moved by the universal frame 186 to trip the fied as regards the means for pulling, retaining, and releasing the link 351, Fig. 3, which is connected to the slam bail linkage of the total control mechanism. This link is adapted to be pulled to cause a blank latch 171 and clutch dog 180. The shaft 344 has secured thereto an arm 343, Fig: 3, having a stud 342 acted upon by a long link 340 connected to the credit balance mechanism. The shaft 344 has an arm 345 with a pin 346 adapted to engage a piece 347 pivoted on the arm 226 of the capacity feed mechanism. The link 340 is held in its upper position till late in the total cycle and must be released, to prevent a second long feed, to free the shaft 344. The release means comprises an arm 376 releasably connected by a button 377 to the total trip shaft 202 so that when 'the latter is rocked in the latter part of a blank cycle, after the long feed has started, the arm 376 moves the link 340 so that the stud 342 can move down a slot 3401 to release the shaft 364. The setting of the machine to print only totals and grand totals is explained in Specification 555,823, [Group XIX]. The line-space control device is set for no linespacing on item cycles and to afford spacing (single, double, or triple) after printing a total. In this connection, an additional linkage is provided so that during the setting for a grand total cycle the shaft 344 can be rocked; the various disabling button connections must be adjusted accordingly. Specifications 522,512, 522,562 and 522,563. [Group XIX], also are referred to.