Patent GB-108420-A (GB)
Title: Improvements in Machines for Reinforcing Paper and the like.
Inventor: HOWARD CHARLES HENRY
IPC: D21F11/00
Filed: 1916-12-15
Abstract: 108,420. Howard, C. H. Dec. 15, 1916 Strengthening with threads and fabrics.-In machines for reinforcing paper and the like, which may come direct from the paper machine, with transversely disposed threads, tapes, cords, or the like, with or without longitudinal threads, paper from a roll 5 is rendered adhesive at 18 and from thence passes over a table 4, together with longitudinal threads b. The transverse threads are laid on the longitudinal threads, and these are surmounted by other longitudinal threads c at the roll 106. The ends of the transverse threads from a source of supply at one side of the machine are carried by delivery-grippers at that side of the machine to the medium position shown in dotted lines, Fig. 2, where they are seized bv other taking-grippers, drawn through the deliverygrippers and carried to the other side of the machine, the delivery-grippers at the same time returning to the supply side of the machine. Here they again close on the threads and the whole frame drops to deposit the threads on the paper to be reinforced and the bars carrying the grippers move with the paper and pass the threads under a pressure roll 106. the threads being severed on the supply side of the machine by a cutter 117 and released from the grippers on the other side. The delivery-grippers comprise an upper jaw 81, Fig. 4, pivoted at 82, and a lower fixed jaw 84, the upper jaw being moved to seize the threads by a cam rod 85 which is turned to open the jaws at the median position by a projection 100 and to close the jaws by a stop 103 at the side of the machine. The taking-grippers comprise an upper jaw 86 pivoted at 87 and a lower fixed jaw 88, the jaws being closed against the action of a spring 90 by a projection 102 engaging a cam bar 85 when the grippers are in their median position, and opened at the end of their travel with the paper by a stop 105. To enable the jaws of each gripper to grasp a number of threads varying in size, one jaw of each gripper has a number of thread-engaging members or teeth 92, each of which engages one thread. Portions 93 of teeth 92 fit in recesses 91 in the lower jaws and the lower end of the teeth rest upon springs 96. The grippers are mounted on a support 61 having rollers 62 resting on longitudinal trackways 60 along which the supports 61 run under the action of a toothed wheel 65, Fig. 2, engaging a rack 64 thereon. The toothed wheel 65 is driven by a cam on the shaft 17, Fig. 1, reciprocating a segment rack 75 in gear with a toothed wheel on a shaft 73, the motion of which is transmitted to the wheel 65 through gearing on shafts 70 and 66. Each of the carrier-frames 37 supporting the trackways 60 has a rack bar 41 extending transversely of the machine and in engagement with a pinion 42 which, by rotation under the action of a cam on the shaft 17, a segment 50, and toothed gearing on shafts 49, 46, and 43, effects the transverse movement of the gripper-bars. The gripper-bars are mounted on a frame comprising standards 19 and longitudinal and transverse braces 20 supported by counterweights 23. The frame is raised and lowered to deposit the threads on the gummed material by cams rocking segment-racks 28 engaging rackbars 26 secured to the standards 19. The thread and paper are pressed together by the roller 106 extending transversely of the table 4 and having end portions carried by bearings mounted on rack bars 108 reciprocated by gears 109 driven by a segment rack 112 which is itself reciprceated from a cam on the shaft 17. The rotary cutter 117 is eccentrically mounted with respect to the roller 106 and severs the threads at the nip of the roller 106. The cutter is rotated by a roll 126, Fig. 5, pressed on the material by a spring 128 and driven through gears 127, 122, 123. To adapt the machine to different widths of material, table filler pieces may be used, the links connecting the cams to the segment racks being correspondingly adjusted in the slots 143, 144.