Patent GB-414143-A (GB)
Title: Improvements in and relating to bookkeeping machines, particularly to paper-feeding means therefor
IPC: B41J11/48
Filed: 1933-02-03
Abstract: 414,143. Typewriters &c. SUNDSTRAND CORPORATION, 100, West 10th Street, Wilmington, Delaware, U.S.A. Feb. 3, 1933, No. 3332. Convention date, May 9, 1932. [Class 100 (iv).] Sheet feeding and guiding arrangements.- In a book-keeping machine, a sheet-holding means which is automatically separated from the platen during return of the carriage, automatically latches and unlatches the starting-bar so as to prevent operation of the machine when the sheet-holding means is separated from the platen. The machine shown in Fig. 4 comprises a carriage 1 supporting a platen 3, Fig. 11, associated with a shelf 25 and feed-rollers 27 for a rearwardly inserted journal-sheet A, a ratchet-wheel 4 on the platen co-operating with a line-spacing pawl 5 on a frame 7 which is rocked by means of an arm 13. A cam-lever 16 connected to the arm 13 is operated by an arm 18 connected to a crank-disc 22 which is provided with a one-revolution clutch controlled by a dog 24 connected to a starting-bar 62, means being provided for disabling the linespacing mechanism until the final movement of the carriage. The carriage is now provided with front-insertion sheet-holding means comprising adjustable side-guides 46 and feed-rollers 55 mounted on rods 36, 37 forming part of a paper-bail 35 which is mounted on pivots 45, Fig. 5. The guides 46 consist of channelmembers secured to brackets 50 laterally adjustable on the rod 36. The feed-rollers 55 are carried by fingers 54 laterally adjustable on the rod 37. The paper-bail is provided with pivoted fingers having V-notches co-operating with pins to hold the bail in forward or rearward position. A plate 31, forming the front of a pan 56, is mounted on trunnions 32 and is provided with arms 33 having pin-and-slot connection 38 to the paper-bail. When the paper-bail is in forward or vertical position ledger and statement sheets C, D, arranged in superposition or side-by-side, are passed through the side guides 46 and on to the pan 56, a guide 60 preventing the sheets from catching the top of the pan-front 31, and other guides 58, 57 holding the sheets away from the feed-rollers 27 and shelf 25. The upper parts of the sheets are visible, and the sheets are adjusted with reference to the printing line by employing the bottom ends of the fingers 54 as gauges. The paper-bail is then moved into the rearward position to cause the feed-rollers 55 to hold the sheets in engagement with the platen. The starting-bar 62 is connected to a longitudinally movable link 75 having a shoulder 74 engaging a longitudinally movable link 72 connected to the clutchdog 24. When the paper-bail is in forward position, the starting-bar is locked, and the type-bars T are thereby prevented from being operated and striking the feed-rollers 55. The starting-bar is locked by co-operation of a shoulder 84 on a lever 85 with a lug 83 on a finger 82 which is pivoted on a rocking arm 80 connected to the link 72. The lever has a rib 87 which normally engages a bar 88 trunnioned on the carriage. A finger 99 on the bar cooperates with a lug 98 on a bell-crank 92 which is connected by a pin-and-slot 95 and a spring 97 to a link 94 connected to the paper-bail. When the paper-bail is moved into rearward position, the bar 88 is rocked into the position shown in Fig. 5, a spring 91 is permitted to rock the lever 85, the link 72 is released, and the starting-bar can be depressed to initiate operation of the machine. During depression of the starting-bar, the lug 83 co-operates with an incline 100 to rock slightly the lever 85, thereby permitting the bar 88 to engage the side of the rib 87, and also permitting the finger 99 to re-engage the lug 98 and detain the ballcrank 92. During operation of the machine, the bar 88 is again moved into the position shown in Fig. 5 by co-operation of a lever 102 on the rocking frame 7 with a finger 104 on the bar. The lever is connected by a spring 8 to the pawl 5, and rests on a pin 105. During the first half-cycle, a lug 103 on the lever rides on to finger, and during the second half-cycle the bar is rocked into the position shown in Fig. 5, the lever 85 is rocked by the spring 91, and the starting-bar is released. When the machine operates after depression of the starting-bar, the paper-bail can, in any position of the carriage, be moved into and left in forward position and if, when current is off, the starting-bar is depressed and the paper-bail is moved into forward position, the spring 97 returns the paper-bail and thereby prevents the typebars from striking the feed-rollers on resumption of the current. During return of the carriage, the paper-bail is automatically returned to forward position, and the bar 88 is caused to re-engage the rib 87 by means comprising a stationary cam-member 110 Figs. 4 and 14, and a co-operating rock-arm 106 which is mounted loosely on the carriage and is connected by a link 108 to the paper-bail. During the return movement, a roller 109 on the rock-arm rides along a cam-edge 111 on a plate 110<a>, the paper-bail is moved into forward position, and the bell-crank 92 is rocked, the lug 98 co-operating with a finger 105<a> to reengage the bar 88 with the rib 87. Inclines 114, 115 ensure co-operation of the roller with the edge 111. When the carriage is moved from the starting position, the roller rides idly up an inclined 113 and along the plate 110<a>. The cam-member 110 is secured to the carriage-support 2, and can be adjusted longitudinally. The rock-arm can be raised to render inoperative the cam-device, a hook 118 being provided for retaining the rock-arm in raised position.