Patent GB-317434-A (GB)
Title: Method and apparatus for making pile fabrics
Inventor: WARD ERNEST H
IPC: D04H11/00
Filed: 1929-02-12
Abstract: 317,434. Oryx Fabrics Corporation, (Assignees of Ward, E. H.). Aug. 16, 1928, [Convention date]. Pile frabrics.-In apparatus for cementing pile material end on to a flexible backing to make a pile fabric for rugs, carpets, upholstery, &c., the batt 9, Fig. 1, of fibrous or yarn pile material is cut into sections, the ends of which are subsequently united to a flexible backing, the batt being held at both sides of the cutting device 41 whilst it is being cut. The cut sections 91 are advanced through a chamber 92 into a chamber 93, where a vulcanizable rubber cement applied by nozzles 921, 922 is spread over the fibre ends' by travelling belts 933, 934 acted upon by adjustable pressure plates 931, 932. The cemented cut sections next pass through guide plates 939, which may be heated by hot air or otherwise to a chamber 94 where the fibre mass is united at one end to a flexible backing, or as shown, at both ends to flexible backings 947, 948, previously supplied with cement, after which the backings and attached fibres &c. pass through a vulcanizing chamber 95 furnished with heated platens to vulcanize the rubber cement under pressure and cause the fibre ends to be attached permanently to the backings. Finally the fibres are slit by a cutting device 97, and the flexible backings with the attached fibres &c. may be rolled up at once for subsequent printing &c. or be previously finished by a " tigering " device 972, a shearing device 973, a steaming device 974, and a shearing device 975. The density of the pile may be varied by varying the speed of the belts 933, 934. The successive cut sections 91 of pile material may be separated by separators 8, fed singly from a magazine in a chamber below the chamber 92 and guided by rails 80 in the various chambers 93, 94, 95, the separators being finally removed by hand, or mechanically in a manner described in a chamber 96. The pile material may comprise yarns, or wool or vegetable fibres, or unspinnable fibres such as goat hair in the form of a batt. Feeding the batt and holding it during the cutting operation. The batt is fed from a shoot through guide plates 10, 20 to jaws 1, 2, the jaw 1 being, by means described, moved horizontally to and from the jaw 2, and the jaws 1, 2 being moved vertically downwards when closed and upwardly after being opened. After the batt has been moved downwards, as shown in Fig. 3, it is clamped above the cutting device 41, as shown in Fig. 8, between a pivoted jaw 30 furnished with a spring and stop member and a camcontrolled jaw 3, which is moved inwards under adjustable spring control. Simultaneously a cam-controlled grooved plunger 5 is moved to the right, raised pins 7 entering grooves in the face of the plunger, the batt being clamped below the cutting device 41 by means of the plunger and the cut sections of the batt, or the separators when these are used. The pins 7, which are mounted diagonally on a bar and are projected diagonally through openings in the floor of the chamber 92 by means described, are, as shown in Fig. 8, lowered before the batt is cut. After the batt has been cut, the plunger is advanced still further, as shown in Fig. 10, to feed the cut sections forward, the pins 7 being raised so that when the plunger is withdrawn they support the cut sections. Cutting devices. The batt is cut between a knife edge 4 and cutting rollers 41 mounted in ball bearings in separate housings to facilitate separate adjustment &c. of the rollers, the housings being resiliently attached to a knife bar slidable laterally in an adjustable groove or way in a casting 47, which is actuated by camcontrolled lever mechanism whereby the cutting rollers can be moved from the inoperative position shown in Fig. 1 to the cutting position shown in Fig. 8. When in this latter position, the knife bar is moved laterally to cut the batt by pin and slot connections to a cross-head connected to a piston in a compressed air cylinder governed by a valve in a manner described. Separator feeding devices. The separators 8 are fed from a magazine which is readily insertable into and removable from a chamber 82. Spring- pressed feeding-rods 85 move the separators along guide rails. Cam-controlled lifting-pins raise the separators successively into the path of the plunger 5, which is grooved to pass over guards and feeds the separators forward one at a time into contact with the batt.