Patent GB-190424456-A (GB)
Title: Improvements relating to Machines for Dyeing Furs and Carrotting Skins.
Filed: 1904-11-11
Granted: 1905-11-11
Abstract: 24,456. Soc. C. & E. Chapal frÞres et Cie. Nov. 14, A.D. 1903, [date applied for under Patents Act, A.D. 1901]. Furs.-Consists in a machine for carrotting skins. A skin is spread hair downwards on a table S, and, the machine being started, a cylinder A rotates and grippers B close, carrying the skin with them. A brush F, mounted in and fed by capillary attraction from an adjustable vessel G, deposits the liquid upon the fur. A second brush K mounted upon a cross-piece 13, which is oscillated between rollers 14 by a rapidly rotating crank-disc and a connecting-rod, causes the liquid to penetrate the fur. A fixed brush M smoothes the fur and removes any excess of liquid. The distances between the brushes K, M and the cylinder A may be varied by means of adjustable supports L, N. After passing the last brush M, the skin is pressed between the cylinder and a roller P by a spring R. The grippers, on passing the roller, open, and an arm D<1> issues from the cylinder and throws the skin on the apron O. The skin is carried away, while the cylinder continues rotating until automatically stopped in its original position. Or the skin may be carried round two, four, eight, or some other suitable number of revolutions. This is effected by mechanism which comprises an endless screw actuating a pinion which revolves once for four revolutions of the cylinder A. Upon the shaft of this wheel are two cams, of which the first actuates an engaging lever which controls a friction clutch. This cam has upon respective thirds of its width one, two, and four notches. On operation of a foot-lever, the clutch is engaged, and the engaging lever is released from one of the notches and slides upon the cam until it engages with another notch and so releases the clutch. According to which part of the cam is presented, so the machine stops after one, two, or four revolutions of the cylinder. The arms D<1> and the grippers B, operated by a cam C through levers b, b<1>, work in accord with the cylinder A as follows :-The cam C is free on the shaft of the cylinder A, and carries guides sliding in the frame of the machine. It is actuated by the second of the aforesaid cams through two levers, the second of these being forked and engaging in a groove of the cam C. The second cam is circular and carries one, two, or no recesses upon respective thirds of its width. According as the first of the two levers is opposite the first, second, or third part of this cam, so the grippers rise at the fourth, second, or every revolution of the cylinder. The cam C also actuates, by means of a lever d, the shaft D' furnished with arms D, which slide in the grooves D<2> of the cylinder. The number of revolutions before a stoppage may also be altered by the ratio of the revolutions of the endless screw and of the cylinder being modified. The cylinder A may also be given a period of repose between each revolution equal to one-third the period of rotation by the following means :-The movement of the driving-shaft is transmitted through the gear wheels E, E<1>, E<2>, E<3>, E<4>, but the pinion E<2> gears with a gear wheel, of the same diameter as the wheel E<3>, which is free upon the boss of a plate keyed to the shaft. On the free wheel, facing the plate, hangs a lever which has, on one side, a roller protruding through a hole in the wheel and engaging with a groove in the face of a fixed cam, and, on the other side, a notch which engages with one of four stops on the plate. The gear wheel E<3> is thus driven through the lever and plate until the cam causes the notch to disengage the stop, and the shaft s is at rest for a quarter-revolution of the free gear wheel. The cam then brings the roller back into its circular path in time for the notch to engage with the next stop.