Patent GB-411716-A (GB)
Title: Improvements in or relating to paper-feeding means for typewriting and like machines
IPC: B41J11/48
Filed: 1933-09-01
Abstract: 411,716. Typewriters &c. REMING- TON TYPEWRITER CO., Ilion, New York, U.S.A.-(Assignees of Hart, F. A. ; R. F. D. A87, Fallbrook, California, U.S.A.) Sept. 1, 1933, No. 24334. Convention date, Oct. 8, 1932. [Class 100 (iv).] Sheet feeding and guiding arrangements; printing-line indicators.-Feed-rollers for cooperating with a platen-roller are arranged, on being released, to move forwards and downwards into position for serving as a guide for a front-inserted sheet. The platen-roller may be associated with a double paper-apron, the bottom paper-apron having a front-section which is automatically depressed to receive the frontinserted sheet when the feed-rollers are released. The feed-roller system may be associated with means for moving a line-indicator into and out of position, locking the keyboard, and depressing the ink-ribbon vibrator. The feed-roller system, the aprons, and the associated means may be arranged to shift with the platen-roller. In the construction shown in Figs. 1, 5, 8, and 12, the platen 11 is provided with two aprons 38, 44 connected by distance-pieces 45, the apron 44 having a pivoted front-section 48 resting on lugs 114 on a rock-shaft 86. A record sheet R and a carbon sheet C are introduced from the rear above the apron 38 and are held on the platen by feed-rollers 41. When the section 48 is in depressed position, ledger and statement sheets L, S and a carbon sheet c are introduced from the front and passed into the space between the aprons. Feed-rollers 49 for engaging the edges of the ledger sheet, and similar feed-rollers for engaging the edges of the narrower statement sheet, are each provided with a mounting comprising a pair of arms 52 having longitudinal slots 54 engaging a shaft 55, and an L-shaped slot 56, 57 for engaging a pin 58 on a plate 59 loosely mounted on the shaft, the pair of plates 59 being arranged in a bracket 60 which is longitudinally adjustable on a bar 68. The feed-roller is applied or released by means of a toggle consisting of links 74 mounted on the shaft 55 and having pivotal connection to links 72 which are pivotally connected to a cross-pin 53 on the arms 52. When the toggle is straightened, the L-shaped slots cause the feedroller to rise, and then move rearwardly into co-operation with the platen at a point above the printing line. Yielding pressure is applied to the feed-roller by means of a spring 70 which is mounted on a stud 64 on the bracket 60, and presses a plate 62 against lugs 61 on the plates 59. When the toggle is broken, the L-shaped slots cause the feed-roller to move forwardly and then drop into the position shown in dotted lines in Fig. 12. The toggle can be actuated by a finger-piece 75, or the links 74 may be splined to the shaft 55, so that the toggle can be actuated by a crank 83 which is connected by gears 80, 81 to the shaft. Preferably the feed-rollers 49 are operated by the crank 83, whilst the feed-rollers are operated individually by their finger-pieces 75, the statement sheet being introduced subsequently to the ledger sheet. A line-indicator 84, consisting of a wire, is secured to spring-urged arms 85 on the shaft 86, one arm having an extension 85<a> provided with a finger-piece 88 which can be pulled forwards to withdraw the line-indicator, a stop-pin 104 and an adjustable stop 89 co-operating with the extension to limit movement of the line-indicator. The line-indicator is operated also by the crank 83, a pin 91 thereon being connected by a link 92 to a pin 93 engaging a guide-slot 94, the pins supporting another link 98 which abuts on a spring 99 and is provided with a bevelled projection 101. When the crank 83 is rocked to apply the feed-rollers, the projection 101 engages the extension 85<a>, and the line-indicator is moved into indicating position. Before the feed-rollers have been firmly applied, the extension is arrested by the stop 89, and the operator is thereby warned that the finger-lever should not be moved further until the sheets have been adjusted with reference to the printing line. On completion of movement of the crank, the feed-rollers are applied firmly, and the projection rides over the extension. When the crank is rocked to withdraw the feed-rollers, the line-indicator is withdrawn by means of the projection, and the lugs 114 permit the apron-section 48 to drop and provide an enlarged channel for the introduction and withdrawal of the ledger and statement sheets, the feed-rollers constituting a support and guide for the sheets. The above-described devices are mounted entirely on the shiftable frame 10 that supports the platen. The lineindicator occupies the positions 84, 84<a>, Fig. 12, when the platen is in normal and shift position respectively. To facilitate introduction and withdrawal of the ledger and statement sheets when the carriage 8 has been returned to initial position, a sheet-guide mounted on the top plate 7 of the machine, and arranged at the right of the type-aligning guide 155, is provided with a lip which forms a continuation of the apron-section 48 when the latter is in depressed position. The sheet-guide is pivotally mounted on adjustable brackets and is held in normal position by light springs, the arrangement enabling the sheet guide to rise if the apronsection collides therewith. Specification 374,109 is referred to. Ink-ribbon mechanism.-When the apronsection 48 is depressed, the vibrator 106, Fig. 8, is automatically depressed to prevent interference with the sheets. For this purpose, the vibrator-arm 107 is pivoted on a support 108 which is mounted on links 109 and is held in raised position by springs 110, an arm 111 on the support having a roller 112 engaging a flange 113 on the shaft 86. The support 108 also provides adjustment of the vibrator when the platen is shifted. Locking-devices.-Means is provided for preventing operation of the numeral-key levers 25 when the feed-rollers 49 and the apronsection 48 are in released position, or when the tabulating-mechanism is operated. The keylocking device preferably consists of a rocking blade 149 adapted to enter a channel 150 which contains balls 151 and is slotted to receive the stems of the key-levers 25. The blade is connected to a longitudinally movable link 135 having yielding connection 138, 139 with a link 134 which is supported by a roller 126 and passes through a guide 142. A roller 133 on the link 134 co-operates with cams 124, 125 on a bar 123 which is suspended from a bellcrank 119 having pin-and-fork connection 116 to an extension 115 of one of the links 109 carrying the support 108. When the support 108 is depressed, the bar 123 is depressed and the links 134, 135 are moved forward by the cam 124, or by the cam 125 if the platen has been shifted, the blade 149 being thereby rocked to effect locking of the numeral-key levers. When the tabulating-mechanism is operated, the link 135 is displaced to lock the numeral keys by means of a rocking arm 163 having a pin 165 engaging a slot in the link. The link 134 yields if the arm 123 is operated when a numeral-key lever is in depressed position.