Patent GB-352085-A (GB)
Title: Improvements in manifolding devices for use on typewriting and like machines
IPC: B41J15/20
Filed: 1930-04-05
Abstract: 352,085. Typewriters &c. ROYAL TYPEWRITER CO., Inc., 316, Broadway, New York, U.S.A.-(Assignees of Degener, G. O.; 1190, Eddy Street, San Francisco, U.S.A.) April 5, 1930, No. 10921. Convention date, May 2, 1929. [Class 100 (iv).] Web feeding and guiding arrangements ; papersupports ; line-spacing mechanism.-In a webmanifolding arrangement of the kind comprising, as described in Specification 276,995, [Class 100 (iv), Typewriters &c.], a platen and a frame over which the webs are fed for line-spacing by means separate from the platen, the frame and platen are relatively movable to ease the webs and thereby facilitate line-spacing. In an alternative arrangement, the frame is omitted, the platen being movable to ease the webs, and line-spacing being effected by rollers arranged above the platen. In the apparatus shown in Figs. 1, 2 and 9 the webs H pass over an apron G, a roller L, a bar platen J, and a guide 100 on the carriage B, and the leading ends are clamped to a truck 45 which is movable on channelled standards 6 secured to the carriage. Carbon strips M pass between the webs at the printing line and are, in the manner described in the abovementioned Specification, fed when line-spacing is effected. The platen is carried by arms 12 suspended from links 14, 16, the links 16 being secured to a shaft 17 provided with cams 41 which engage pins 44 on the arms and normally hold the platen in forward position, in which position the parts of the webs between the guide 100 and the front of the apron G are bowed. To facilitate line-spacing and carbon-strip feed, the platen is moved rearwardly to ease the webs. For this purpose, the shaft 17 is rocked by means of a hand-lever 27, the cams 41 being thereby depressed and permitting springs 19 to retract the arms 12. The hand-lever is mounted on the carriage and is connected to a cam 28 engaging a lever 32 which is connected by a link 35 to an arm 38 on the shaft 17. The guide 100 forms part of a bail 101 carried by a rock shaft 19a. connected to springs which are arranged to hold the bail in either normal or raised position. The truck 45 has endplates 50, 51 carrying a sliding clamp-bar 52 which is pressed rearwards by means of spring-urged levers 57 and. holds the webs in contact with a flange 49 on the truck. The clampbar is released by means of a finger-lever 65 secured to a rock shaft 60 which is mounted in the endplates and has flats co-operating with straps 63 on the clamp-bar. The endplates carry rollers 70, 71 running on the front of the standards, and pinions 87 engaging racks 88 in the standards. Pawls 77, 78, Fig. 9, mounted on a lug 69 on the endplate 51 co-operate with racks 73, 75, the rack 73 being formed on the left-hand standard and the rack 75 being mounted therein for vertical movement. The rack 75 is connected to a bell crank 94 which is connected to a lever 91 arranged in the path of a roller 90 on the cam 28. On rocking the hand-lever 27, the platen is retracted. in the above-described manner to ease the webs, and the rack 75 then co-operates with the pawl 78 to raise the truck and thereby line-space the webs. To permit of depression of the truck, the pawls are releasable by means of a thumb-lever 83 having a finger 84 for engaging the pawls. The standards have stoppins 109 in the path of adjustable plates 105 on the truck. The clamp-bar and truck have recesses 110, 47 for permitting the operator to grip and retain the webs when the truck is depressed. The recess 110 may be of the same width as the recess 47. When the pawls are released, the truck can be gradually raised or depressed by turning a shaft 85 mounted on the truck and having pinions 86 engaging the pinions 87. In the apparatus shown in Fig. 15, the truck is replaced by a feed-roller 118 mounted in the carriage B, and a pressure-roller 120 carried by a bail 119 on the carriage, a ratchetwheel on the feed-roller co-operating with a pawl on a rocking arm operated by the hand-lever 27. Springs hold the bail in either normal or raised position. On operation of the hand-lever, the platen J is retracted, and line-spacing is effected. The platen forms the subject-matter of Specification 352,087 and comprises a reversible casing 21, Fig. 1, and a soft filling 22 having curved impression -surfaces. Web-cutting arrangements.-When the truck 45, Figs. 1, 2, and 9 is in depressed position, the typed parts of the webs H are severed by means of knifeedges 59 on the clamp-bar 52, and a knife-edge 112 on a slide 111 which is mounted on the clamp-bar and is pushed inwards to align the knife-edges. The slide is returned by a spring 117. The slide can be omitted. In the apparatus shown in Fig. 15, a knife 124 is carried by arms 123 which are pivoted on the bail 119 and have lugs 127 resting on the bail, and a finger-piece 128 for lifting the bail.