Patent GB-367169-A (GB)
Title: Improvements in or relating to the manufacture of inlaid linoleum and the like
IPC: D06N7/00
Filed: 1931-02-12
Abstract: 367,169. Inlaid linoleum. GREENWICH INLAID LINOLEUM (F. WALTON'S NEW PATENTS) CO., Ltd., 35, Newgate Street, and MONTGOMERY, H., 74, Tunnel Avenue, East Greenwich, both in London. Feb. 12, 1931, No. 4424. [Class 140.] In making inlaid linoleum in a continuous rotary machine having rotary cutting means, cut pattern elements are transferred from the cutting means to separate travelling devices provided in the machine which turn the pattern elements in such manner as to turn the direction of their graining, the elements or tesserµ being then transferred to and disposed on the assembling surface in their turned position and correct situations as components of the pattern. The turning devices preferably consist of plates or discs, each capable of accommodating on its surface a tessera or tesserµ, and are caused to travel at the same surface speed as the rotary cutting means. After receiving the tesserµ from the cutting means, the turning devices are caused to turn to the required degree, and the tesserµ are then deposited on the assembly surface, which is usually the backing fabric or an intermediate surface from which the tesserµ are transferred to the backing. Figs. 1 and 2 show the general arrangement of the machine. The sheet of material 31 passes around the cutting roll 32 and between the latter and the knife cylinder 33 which is provided with the usual brush 34, inlaying roll 37, waste roll 38, waste brush 39 and waste conveyer 40. A large pin band drum 41 of known kind constitutes the assembly surface. The turning cylinder 42 is located between the knife cylinder and the drum 41 to effect the turning of the tesserµ before they are deposited on the drum. On the surface of the cylinder 42 are a number of plates 51 provided with pins to hold the tesserµ and made of rubber with a backing of thin steel plate 53, Fig. 3, so as to be flexible. A brass backing plate 54, secured to the cylinder 42, forms a track on which the disc 51 rotates, and the disc is constrained to conform to the curvature of the backing plate by means of screws 60 secured by nuts 61 sunk in recesses in the rubber disc and having enlarged heads 62 which travel in undercut grooves in the backing plate 54. The disc 51 is rotated by a central spindle 74, a squared part of which passes through and is secured to the steel backing 53 of the disc 51. A cam 70 secured to the inner end of the spindle 74 engages cam guides 80, 81, supported on a fixed shaft 82, the cam and cam guides being so arranged as to turn the disc 51 to the desired extent at one point, and to return it to its original setting at another point in the rotation of the cylinder 42. The cams 70 are preferable detachable so that others of different form may be readily substituted. Preferably the tesserµ to be turned are transferred directly from the cutting cylinder to the turning discs, and the turned tesserµ deposited on the assembly surface from the discs. Intermediate devices may however be employed between the cutting means and the turning means, or between the latter and the assembly surface. A cutting cylinder of the usual type may be used to deposit directly upon the assembly surface those tesserµ which are not to be turned ; in the case of some patterns such a cutting cylinder and a set of turning devices is needed for each variety of graining used in the pattern. In the case of patterns in which all the tesserae have the same kind of grain, one cutting cylinder and one or more sets of turning devices may be used to produce the complete pattern from one sheet of material. Again, two sets of turning devices, one on either side of the cutting cylinder, may be used to turn all the tesserµ, part in one sense and part in the other, none c the tesserµ being unturned. In Fig. 13, for instance. the cutting cylinder 33 delivers some tesserµ directly to the assembly cylinder 41, while other tesserµ are taken from the cutting cylinder 33 by the turning cylinder 42 and delivered to the assembly cylinder by an intermediate cylinder 92. Another arrangement comprises two cutting rolls 33, 95, F.g. 15, the first of which delivers unturned tesserµ, while the second roll 95 delivers tesserµ from a second sheet of material to a turning cylinder 42 which turns them and delivers them to the assembly roll 41. In the arrangement shown in Fig. 18, a single cutting cylinder 33 delivers tesserµ to two turning cylinders 42, 101 and to an intermediate roll 102, from each of which the tesserµ are deposited on the assembly roll. The turning dev ces may be carried by a travelling belt instead of by a rotary cylinder. The belt 142, Fig. 19, may be made of rubber, with metal bearings for the spindles 58 of the turning devices 51, or of metal links or elements. The cams 70 of the turning devices co-operate with fixed cam guides 180. Means may be provided to cause the turning plates or discs 51 to take a curved form where the belt passes over supporting or driving rollers 143, 145. Preferably the tesserµ are transferred to the belt and deposited on the assembly roll at points where the belt is straight. In all cases the tesserµ may conveniently be ejected from the cutting cylinder by automatic selecting means similar to those ordinarily uaed. Preferably the turning discs or plates are as large as the tesserµ, but the same device may be used for tesserµ smaller than the plates. The plates may be arranged in staggered or other formation on the turning cylinder or belt, and may be made removable and adapted to be inserted in any of a large number of fixed bearings provided on the turning cylinder.