Patent GB-190221162-A (GB)
Title: Improvements in Apparatus for the Manufacture of Mosaic Linoleum Floor Cloth and the like.
Inventor: NAIRN MICHAEL BARKER
Filed: 1902-09-29
Granted: 1903-07-23
Abstract: 21,162. Nairn, M. B. Sept. 29. Coated fabrics.- In the manufacture of mosaic linoleum floorcloth &c., a flat sheet of linoleum is brought underneath a series of cutting-discs, having their cutting-edges in one and the same plane, and is then raised and pressed against the dies by causing a roller to travel along beneath it ; the tesserµ are thus produced row by row across the width of the sheet, and, after the roller has moved clear of the cutting-apparatus, they are ejected simultaneously from the dies and deposited on the basecloth. A series of machines, according to the number of colours required to form the pattern, are arranged side by side, and the canvas base is passed through them consecutively, and receives the tesserµ formed by each in proper relative position. From the last machine, the base, with the linoleum arranged in a completed pattern, passes to a hydraulic press, provided with a heating- chest, in which the whole is consolidated ; it then passes to a forwarding-cylinder, to which the required intermittent motion is imparted. The cutting-machine, Fig. 3, consists of a beam 9, which is moved up and down by side rods 14, and levers and cams, and carries a fixed plate 25 and a relatively movable platen 23 ; the platen works on guide-pins and between stops, and is connected to the beam by eccentrics 24 and eccentric-rods. The cutting-dies 30 are fixed to the platen, and the plungers 33 to rods fixed in the plate. When the dies are in the upper position ready for cutting, Figs. 3 and 6, the plungers are drawn up within them ; when the beam is lowered, Fig. 7, the plungers descend in relation to the dies, and push out the cut pieces on to the base-cloth 1. The plungers are maintained in this relation to the dies during the upward movement of the beam, in order to permit of their being lubricated, after which they resume their original position. The pressing-roller 47 is provided with a resilient surface, and is mounted in the inner member of a carriage supported by means of wheels 45 on rails 44 and composed of two frames, one capable of sliding endways to a limited extent within the other ; the inner frame is provided with a series of rollers 48, which form a supporting-surface for the linoleum sheet, and an apron 63 by which the waste material, pushed off the spaces between the dies by spring plates 62, is carried away. Motion is imparted to the carriage by means of pinions in gear with racks on the inner frame. Starting with the carriage in its outermost position, the initial movement of the inner frame brings the roller 47 against the bar 49 of the outer frame, the end of the linoleum sheet 50 being nipped between the two ; the two frames then move inwards together under the platen, with the roller in a depressed position, so that the linoleum is drawn in without touching the dies. The roller is mounted between two levers pressed upwards by springs but held down on the inward movement by the engagement of wings 58<x> formed thereon under the bar 49. When the inner frame commences its return journey, the roller moves away from the bar and springs upwards, pressing the linoleum against the dies ready for the cutting operation ; the carriage, as a whole, then continues its outward travel. The roller is rotated by rack-and-pinion gearing. An oil trough 51 is carried by the outer frame, and also a rotating brush 52, which is mounted between pivoted arms. On the outward travel, the roller lies depressed in the trough ; on the inward travel it is elevated, by the contact of inclined surfaces on the inner frame with the arms, and runs in contact with the dies and plunges for the purpose of lubricating them.