Patent GB-191400824-A (GB)
Title: Manifold Attachments for Typewriters.
Inventor: RAUH LEOPOLD
IPC: B41J35/22
Filed: 1914-01-12
Granted: 1915-01-07
Abstract: 824. Rauh, L. Jan. 12. Ink-ribbon mechanism.-A manifolding-attachment for typewriters comprises a frame provided with guides for arranging an ink-ribbon in folds passing between webs for the copies, the manifolding ink-ribbon being fed automatically, preferably by means of the line-spacing mechanism. The devices, comprising spools 51, 52 and guides 70, 71 for feeding and guiding the manifolding ink-ribbon 69, are carried by the end plates 33, 34 of a frame which is detachably and pivotally mounted on the end bars 39 of the platencarriage. The end plates 33, 34 are provided with hooks 83 resting on the end bars 39 of the platen-carriage, and with pins pivoted in a bracket 37 on the left end bar 39 and in the socketed end 43, Fig. 13, of a retractable pin 44 mounted in a bracket 38 on the right end bar 39. The pin 44 is held in position by a spring 45 and is provided with a pin 47 engaging a cam 48 arranged so that, on turning the head 46, the pin 44 is retracted to permit of detachment of the frame. The spools 51, 52 for the ink-ribbon 69 are mounted loosely on shafts 49, 50 provided with loose sleeves to which are secured ratchet-wheels 55, 56, the shafts being formed with heads 101 and provided with nuts 53, 54, which are tightened to secure the spools and their ratchet-wheels to the shafts. The feed is reversed by tightening one nut and slackening the other. To facilitate the fitting of the spools to frames of different sizes, the shafts 49, 50 can be arranged as shown in Fig. 11, with the heads 101 in engagement with the spools, or the shafts may be reversed as shown in Fig. 4. The ratchet - wheels 55, 56 are engaged by pawls mounted on carriers 59, 60 connected by links 61 to arms 63 on a rock-shaft 65 mounted in the end plates 33, 34. An extension 66 of the arm 63 is coupled to a bar 67, which engages a lug on the line-spacing lever 7, the arrangement being such that the ink-ribbon is fed at each operation of the line-spacing lever. The ratchet-wheels are engaged by detents, and the spools are engaged by brakes consisting of rollers 85 carried by levers tensioned downwards by springs, which are secured to screws b9 mounted in adjusting-nuts 90 on the levers. The ribbon passes along the printing line and is guided in three folds by means of the guides 70, 71 secured to the end plates 33, 34. The guide 70 is formed with a guide-finger 75, Fig. 11, and a diagonal guide-edge 72, and the guide 71 is formed with a guide-finger 74, a diagonal guideedge 76, and a guide-slot 73. The ribbon passes round the edge 72, through the slot 73, and over and round the finger 74, round the finger 75, and thence between the two folds thus formed and over the edge 76. The guides cause the ribbon to lie close to the platen with the folds in close contact. The frame can be lifted on the pivots by means of a handle 84 to facilitate the insertion of the paper between the folds. The paper for the original is arranged under the usual ink-ribbon 5. Web feeding and guiding arrangements.-The paper is preferably in the form of webs 91, 92, 93, 94, the web rollers being journaled in a frame 8 running on a rail 15 secured to brackets .19 on the frame 1 of the typewriter. The frame is detachably connected to the platen-carriage by means of hook-levers 31 engaging studs 32. The webs are guided to the platen by rods 95 mounted in brackets 96 on the levers 31. The webs are guided over the platen by a plate 35, Fig. 4, connecting the end plates 33, 34. The webs are tensioned by plates 26 pivoted on a rod 24 and pressed against the ends of the rolls by springs 27. Web-cutting arrangements.-The webs pass between a knife 36, Fig. 4, and a gripping-bar carried by pivoted arms provided with a handle 82, Fig. 1.