Patent GB-240952-A (GB)
Title: Improvements in connection with duplicating arrangements for typewriters
IPC: B41J17/00
Filed: 1924-07-28
Abstract: 240,952. Lamson Paragon Supply Co., Ltd., and Lee, F. July 28, 1924. Web feeding, guiding, and clamping arrangements; ink-ribbon mechanism. - Relates to web-manifolding arrangements of the kind in which carbon sheets, interleaved with the webs and connected to a carriage or crolley. are fed with the webs during writing, and consists in the provision on the typewriter carriage of means for gripping the webs when the carbon-paper holder is being retracted to remove the carbon paper from between the portions of the webs that have been filled in. The gripping means comprises a lever 40, Fig. 1, pivoted at 42 to the typewriter carriage 22<a> and extending beneath the platen P, against which it bears when a button 41 at its other end is depressed. The car bon-paper carriage comprises two end plates 23, 24 connected by transverse plates 25, 26. each end plate carrying a pair of rollers 27 which bear upon L-shaped rails 10 forming the sides of a light rectangular frame 12. Two parallel rock 35, 36 connected between the end plates 23, 24 of the carbon-paper carriage each carry two sleeves 37, Fig. 4, which are pressed apart by an intermediate spring 38 and are provided with jaws 37<a> between which the ends of the carbon papers are gripped. The end plate 23 of the carbon-paper carriage extends tordwardly and terminates in a right-angled bend 28. A plate 29 running parallel to the end pla@e 28 and mounted thereon by a pin-and-slot connection has a similar right-angled bend 30, and at the other end is connected to a place 32 which is pivoted on the plate 23 and carries a rod 33 extending partly across the carbon-paper holder above the transverse plate 25. The rod 33 is provided with an indiarubber sleeve 34 and bears upon the webs or dockets which extend forwardly from the rear of the frame 12, a spring 31 being interposed between the bent portions 28, 30 of the plates 23, 29 to provide the requisite pressure. When a docket has been filled in, the platen is rotated in a reverse direction until the leading or free edges of the webs are in alignment with an index mark, whereupon the button 41 is depressed to grip the dockets, the edges of the carbon papers being cut away to prevent them from being gripped also. Simultaneously the portions 28, 30 of the plates 23, 29 on the carbon-paper carriage are pressed together to release the pressure of the rod 33 and sleeve 34 from the webs, and the carbon-paper carriage is pushed back until it contacts with an adjustable stop 42 on a side 19 of the frame 12. On the button 41 being released the platen is rotated to bring the filled in dockets above a cutter bar 39, where they are detached, leaving a fresh portion of the webs with carbon papers interposed ready for new entries. The frame 12 consists of four longitudinal members 19 with transverse end members 18, the two inner members 19 and the members 18 being of circular section and integral with one another. The frame 12 is coupled to the typecarriage by a member 22, and is provided with rollers 21 in brackets 20 on its under side bearing on transverse rails 17 mounted on a stationary stage or carrier 11. The stage 11 consists of diagonal members carrying at their extremities pillars 13 which bear upon springs 14 contained within recesses in a stand 10 secured to the rear of the typewriter carriage. The central portion of the frame 11 is supported by a screw-threaded rod 15 having a nut 16 and providing means for adjusting the height of the frame 11 and carriage 12 relatively to the typewriter.