Patent GB-190317857-A (GB)
Title: Improvements in Machines for Treating Fabrics to Render them Water-proof.
Inventor: LICHTENSTADT CHARLES
Filed: 1903-08-18
Granted: 1904-04-21
Abstract: 17,857. Lichtenstadt, C. Aug. 18. Coated fabrics.-Relates to machines for applying wax-like substances to fabrics to render them water . repellant. In the form shown in Figs. 1, 2, and 5, the side frames 20, 21 of the machine support brackets 26,27, between which extends a curved rod 30 adapted to spread the fabric as it enters. The fabric then follows the course indicated by dotted lines in Fig. 2, round the rollers 31, 35, 36, 32, 112, 113, and 114, after which the smoothed and tensioned fabric passes Letween a roller 46 and a block 37 of some waterproofing - composition having about the consistency of wax, where one surface of the fabric is coated. The other surface is similarly coated by passing the fabric between a roller 47 and a block 38 of waterproofing - composition, and the fabric then moves over the roll 50 and between the heated calendering-cylinders 91, 90, and is finally wound on to the mandrel 122. The rollers 46, 47 are rotated in opposite directions, and the cylinders 91, 90 also, by toothed gearing from a shaft 98, which can be clutched to a driving-pulley 99, the peripheral velocity of the upper cylinder 90 being slightly greater than that of the lower. The ends of the rollers 46, 47 are carried in arms 48, 49 which hinge on pivots 50, and which are held in operative position by spring catches 51 engaged by pins on collars 53. When the catches have been withdrawn, by turning the collars by means of the handle 52, the front ends of the pivoted arms can be raised, into the position shown in dotted lines in Fig. l, by means of the lever 59 and connecting- links 61, 62. The blocks 37, 38 rest upon the upper ends 39, 40 of U-shaped frames 41, 42, which are normally pressed vertically upwards between fixed guides 44, 45 by reason of the conriection with rocking bars 71, 72 pivoted on the shaft 73 and fitted with sliding weights 69, 70 adjustable by hand-wheels 81. The rocking bars are rigidly connected together, and the pressure which they exert on the blocks can be removed by moving the lever 88 until the arm 86 supports one rocking bar. The cylinder 90 is mounted in blocks movable along vertical guides 104 by means of a lever 111 and links 109, 108, 105. The mandrel 122 is arranged to rise vertically between a fixed guide 123 and a pivoted guide 124 as the fabric is wound on, and weights 128, which carry antifriction rollers 133, 134, press the mandrel into contact with the cylinder. The surfaces of the rollers 46, 47 have right-handed helical grooves from the middle to one end, and lefthanded helical grooves from the middle to the other end, by which the fabric is stretched laterally. As it passes round the cylinder 90, the fabric is stretched lengthwise by normally-mounted leather or like rollers 120, and laterally by similar-inclined rollers 121, which are carried by a spring-pressedshaft 115. In the modification shown in Fig. 18, the mandrel 122 supports a roller 136 which can move vertically between the guides 123, 124, and which is rotated from the cylinder 90 by chain gearing 149,141. The intermediate shaft 143 of the chain gearing is connected by pivoted levers 145, 148 to the shafts 135, 146 respectively. The roller 136 is connected by chains to drums 153, which can be rotated by hand so as to raise the roller, and the roller can be held in its raised position either by screw clamps 139 or by a spring-pressed catch. For fabrics, such as silk, in which the tension on the mandrel has to be carefully regulated, the sliding blocks of the roller 136 are connected to lower sliding blocks 168, 188, Figs. 24 and 25, of which one carries chain gearing 187 adapted to rotate the shaft 171 detachably supporting the mandrel 193. The chain-wheel 176 on the shaft 171 is loosely mounted between leather or like discs 177, 180, which can be adjustably pressed between flanges 175, 179 by a hand-wheel 181, so as to give any desired pressure between the chainwheel and the flange 175 of the sleeve 174 secured to the shaft 171. The waterproofing-composition is preferably a substance composed of paraffin, petrolatum, and alcanna.