Patent GB-276995-A (GB)
Title: Improvements in manifolding devices suitable for use on type-writing and like machines
IPC: B41J35/30
Filed: 1927-08-29
Abstract: 276,995. Royal Typewriter Co., Inc., (Assignees of Degener, G. 0.). Sept. 3, 1926, [Convention date]. Web feeding and guiding arrangements; paper-supports; line-spacing mechanism.-In a web-manifolding attachment for typewriters, listing-machines, and the like, the webs pass over a platen and means is provided for moving the webs into the vertical position to permit of line-spacing. The webs may be held by a clamp which is supported by an inclined frame and is associated with line-spacing mechanism, the frame being moved into the vertical position to ease the webs before line-spacing is effected. The websmay be interleaved with horizontally arranged ink ribbons or carbon strips engaging feed-mechanism which is operated when line-spacing is effected. In the apparatus shown in Figs. 1 and 6, the platen roller is removed from the carriage B and is replaced by a platen consisting of a curved plate 14 which is secured to a frame 8, 9 comprising channelled side-bars pivoted to arms 6 on a shaft 2 in the carriage, The side-bars have arcuate slots 13 engaging the platen shaft 1 and are connected by links 16 to arms 18 on a rock-shaft 19 mounted on the carriage. A plate 22 having guide flanges at the ends is mounted on the side bars and is provided with a shaft having pinions 30 engaging racks on the side bars. A clamping-bar 36 for securing the multiple web H to the plate 22 is secured to a shaft 34 mounted above the plate, arms 37 on the shaft being connoted to springs 39 which hold the clamping- bar in contact with the plate. The clamping-bar is released by means of finger-levers 41 secured to a cam-shaft engaging the arms 37. The web passes over the shaft 19, the paper-table G, through a guide-shoot 4 on the shaft 2, and thence over the platen to the plate 22. The web is guided on to the shaft 19 by means of channelled guides 67, Fig. 1, having hooks 68 engaging beneath the shaft. The guides are secured to yoke 65 pivoted to a yoke 62 provided with a roller 59 which runs on a rail 58 secured to arms 54, 55 on the framework A of the typewriter, springs 69 being connected to the guides and extensions 71 of the yoke 62. Projections 72 limit the movement of the yokes. The plies of the web are interleaved with horizontally arranged ink ribbons or carbon strips K, Fig. 9, which are guided and fed by mechanism described below. To line-space the web, the plate 22 is moved step-by-step by means of mechanism comprising a sliding rack 48 which is guided in ono of the side bars 9 and co-operates with a pawl 47 supported by the plate 22. The rack 48 is provided at the bottom with a pivoted rack 140 which is held by a spring in engagement with a pinion 143 formed on a sleeve 144 loose on the platen shaft 1. A pinion 158 on the sleeve engages a rack on a link 156 connected to a lever 167, Fig. 11, co-operating with a roller 184 on a cam 161 to which is secured the line-spacing and carriage-returning lever 165. An arm 21 on the shaft 19 is connected by a link 160 to a lever 166 having a roller 180 co-operating with the cam 161. In operation, 'the web is clamped to the plate 22 and is typed upon in the ordinary manner. At the end of a line, the lever 165 is rocked and the cam face 179 rocks the lever 166, thereby causing the shaft 19 to rock the frame 8, 9 from the normal to the vertical position, the arms 6 moving slightly rearwards and causing the platen to recede slightly from the web. The movement of the platen eases the frictional engagement of the web and carbon strips and permits line-spacing of the web and feed of the carbon strips to be effected. During the final part of the movement of the lever 165, the roller 184 engages the lever 167 and line-spacing is effected, the roller 180 meanwhile riding on a concentric part 183 of the cam and retaining the side bars in vertical position. A detent on the plate 22 co-operates with a rack on the side bar to retain the, plate after the line-spacing movement. When a form is completed, the clamping-bar is released by means of the finger-levers 41. Simultaneously, a slide 50, Fig. 6, operated by one of the arms 37 releases the pawl 47 and detent, thereby permitting the plate 22 to be moved downwards to the starting position. A record sheet L, Fig. 1, may be passed through a guide-shoot 136 and be clamped to the plate 22 during the line-spacing movements. Ink-ribbon mechanism.-The carbon strips or ink ribbons K, referred to above, are drawn from rolls mounted on spindles 86, Fig. 9, supported by a plate 85 mounted on the carriage at the rear. The carbon strips are tensioned and guided by pins 88, 89, the pins 89 being carried by spring-urged slides 87. The slides are retractable by means of finger-levers 97 on a cam shaft 95 engaging projections on the slides. The carbon strips pass over guide-rollers 98, 114, 115 and are led between corrugated feed-rollers 119, 120, the rollers being mounted on channelled bars 99, 116 secured to the carriage at the sides. The roller 119 is mounted directly on the bar 116, and the roller 120 is mounted on a spring-urged frame 127 which can slide on the bar. To separate the feedrollers, the frame 127 is moved by rocking a camshaft 128 which is mounted in the frame and abuts on a bracket 130. The roller 119 co-operates with a pawl 121 on a link 125 coupled by a bell-crank 146, link 150 and a second bell-crank 154, Fig. 11, to the link 156, the pawl being operative to feed the carbon strips during the line-spacing movement of the webs. The link 150 is adjustable on the bell-crank 146 to vary tbe feed. During the movement of the frame 8, 9, Figs. 1 and 6, from inclined to vertical position, accidental movement of the carbon strips is prevented by means of a brake-spring 102 adapted to press the carbon strips against an abutment 104. The brake-spring engages a cam 105 connected by a lever 107 and link 109 to a bell-crank 173 having a roller 174 co-operating with the cam 161. During the initial movement of the lever 165, a cam face 175 rocks the bell-crank and the brake-spring is caused to press on the carbon strips, the pressure being removed when the roller rides on to a concentric part of the cam. A spring may replace the link 109, and the cam 105 may be arranged to engage the free end of a spring blade having a bow engaging the carbon strips. In some cases a separate pair of plain feed-rollers is provided for each carbon strip. In the arrangement shown in Fig. 1, the carbonstrip rolls are mounted on a spindle 73 secured to the framework A of the typewriter. The rolls are separated by discs 74 having keyhole slots engaging the spindle. The carbon strips pass through a guide member 75 which is secured to the carriage at the side and is provided with spring fingers 80 for tensioning the carbon strips, and pins for guiding and imparting a quarterturn to the carbon strips.