Patent GB-191423349-A (GB)
Title: Improvements in Typewriting Machines.
Inventor: FAIRWEATHER WALLACE CRANSTON
IPC: B41J17/00
Filed: 1914-12-01
Granted: 1915-06-10
Abstract: 23,349. Fairweather, W. C., [Underwood Typewriter Co.]. Dec. 1. Web feeding and guiding arrangements; inkribbon mechanism. - In web-manifolding arrangements, duplicating-sheets are fed with the webs during the writing of each portion and are then retracted to engage the following portion, the webs being guided in a bent path so as to cause the sheets to be gripped, and the platen being movable away from the feedrollers to release the pressure of the webs in order that the sheets may be retracted. In the arrangement shown, a zigzag folded web 14 fed from a roller is interleaved with carbon sheets 27, which are secured at one end to fingers 32 on a trolly 28 mounted on the side bars 15 of a frame which is secured to the platen-carriage 2 and is supported at the rear by a rail 22. The sheets are formed with loops which are slipped over the fingers. To facilitate attachment, the fingers are arranged in stepped order, and alternate fingers are secured to opposite sides of the trolly. The trolly is connected by a cord 38, passing over a pulley 39, to a drum 40 secured to springs 43, which are tensioned by the forward movement of the trolly and serve to return the trolly with the sheets when the pressure on the webs is released. The platen - axle 48 is journaled in arms 47 secured to a rock-shaft 49 provided with a hand-lever 58, which, on being moved forward. lifts the platen away from the feed-rollers 4, 5 and above the level of the web. A table 62 secured to the arms 47 is provided with a bar 63 which supports the end of the web and carries a stop or gauge 64, which can slide for adjustment and is secured by a screw 65. The web and the carbon sheets pass downwardly over a roller 67 and thence round the platen on to the plate 62. On completion of the portion, the end of the web is pulled up to the stop 64 and held there by the hand, and the lever 58 is moved forwards, thereby lifting the platen and depressing the plate G2. The web is thus brought into the horizontal position, and pressure on the carbon sheets is relieved, the spring drum 40 thus being permitted to return the trolly with the sheets to the normal position. The platen and the plate 62 are then returned to the normal position by moving the lever 58 to the rear. To prevent interference with the carbon sheets when the web is grasped, the end of the web is arranged beyond the ends of the sheets. A latch 60 holds the lever 58 in the rear position and, in conjunction with a pin 72 engaging the right-hand arm 47, prevents the platen from dropping when the leed-rollers 4, 5 are released by the ordinary mechanism 9. The folds of the web are held apart by fingers 34, Fig. 1. The edges of the web are engaged by side-lays 35, Fig. 1, adjustable on a bar connecting the bars 15, and by sidelays 66 which are adjustable on the plate 62 and are held frictionally. Web-cutting arrangements.-A tearing-edge 68, Fig. 1, secured to a sleeve 69 provided with a hand-lever 70, is provided for detaching the portions, such as printed forms, from the web. Line-spacing mechanism. - To permit the platen to be lifted, as described above, the linespacing wheel 56 and the platen-knob 50 are secured to a short shaft 51, which is journaled in the end plate 52 and is geared to the platenaxle 48. The gearing shown consists of a pinion 53 on the shaft 51 gearing through a loose pinion 55 on the shaft 49 with a pinion 54 on the platen-axle 48.