Patent GB-190714536-A (GB)
Title: Improvements in Combing Machines.
Inventor: THOMPSON WILLIAM PHILLIPS
Filed: 1907-06-24
Granted: 1908-05-21
Abstract: 14,536. Thompson, W. P., [Delette, E.]. June 24. Combing - machines of the Heilmann type. Relates to the detaching and piecing mechanism, pressing-in device, nipper mechanism, and feed. A drawing, detaching, and piecing mechanism suitable for medium and long fibres is constructed with rollers 26, 27, Fig. 1, carried in a frame 28 pivoted on the shaft O and oscillated towards and from the nippers by cams 31, 21 respectively acting through a pivoted lever 30, and rod 29. The roller 27 is pressed by springs against the roller 26, which is rotated forwards for delivery and backwards to a less extent for piecing by gearing 11, 17, the part 17 being formed as a half-clutch which is normally engaged by a movable half-clutch carrying a wheel gearing with a toothed quadrant 4 oscillated by a crank and provided with an adjustable coupling with its connecting-rod as shown in Fig. 1. The backward rotation is controlled by a face cam which acts through a lever, shaft, and arms to disengage the clutch against the action of a spring. 'I his cam is made in two pieces one of which is adjustable for regulating the period of action, and the first portion is higher than the remainder and acts through a pivoted lever and spring rod to apply a brake to the half-clutch 17 immediately the movable part is disengaged, thereby overcoming the momentum. This mechanism may also be used on Offermann, Ziegler, Nasmith, and other combing - machines having fixed drawing-off cylinders and a movable feed-device. An endless leather 25 passing round the roller 26 and a roller 23 on pivoted extensible levers 24 conveys the pieced tufts to rollers 33, from which they pass through a funnel 34 to delivery rollers 35. A cutter 36, Fig. 6, and counter-cutter 40 are employed to terminate the action of the drawing and detaching rolls 26, 27. The cutter 36 is oscillated by an adjustable rod from a spring-controlled lever operated by a cam, and the counter-cutter 40 is pivoted on levers 60 fixed on a shaft 61 carried on pivoted levers oscillated by a cam on the counting- cylinder shaft. As the rollers 26, 27 are moved towards the nipper, the leather 25 presses back the counter - cutter 40 against the action of a spring rod which effects its return. A different arrangement of the rollers is provided for combing short fibres, the cutter and counter-cutter being dispensed with. In this arrangement, which is similar to that described in Specification No. 27,256, A.D. 1897, the rollers 26, 27 are replaced by a roller 41, Fig. 8. mounted in fixed loaded levers, and a fluted roller 45 which together with an additional pair of rollers 48 is mounted on a pivoted frame oscillated as previously described or otherwise. The roller 45 is rotated forwards and backwards by the gearing and clutch previously described or by gearing connected with a ratchet-wheel 58 which is operated by a pawl controlled by a double cam 59 as in the usual Heilmann machine, the necessarily reduced-backward motion being effected by the pawl jumping a tooth of the ratchet. The lower roller 48, which may be fluted or provided with a leather, is driven from the roller 45. As shown in Fig. 8, the combing action is almost completed and the roller frame is about to move towards the nipper to receive the cleaned ends of the fibre. The fibres are pressed into the comb teeth by a cylinder 66, Fig. 6, having flutings of unequal height and mounted on levers pivoted on the comb shaft similar to the arrangement described in Specification No 13,930, A.D. 1903. The cylinder is operated by rods 67 connected to spring-controlled arms 68 on a shaft 69, and receives a slow movement away from the nipper from a cam 71 acting through an arm 70, and a rapid recoil controlled by a second cam through an arm 72. The nipper is controlled by two cams, a cam 74, Fig. 6; acting through a loosely-mounted arm 84 and an adjustable rod 78 to operate the lower jaw 39 and limit its descent ; another cam 80 acts through an arm 79 and indirectly through a spring rod 82 to operate the upper jaw 38. The arms 84, 79 are connected by a spring. The rod 87 carrying the feeding-device 51, Fig. 7, is mounted on the arms of the lower jaw and is actuated by the rod, lever, and cam 88, 89, 90 respectively. The pressing-in device 42 for the fixed or top comb 37 is connected to the levers 93, 95 forming a parallelogram. During the advance of the feeddevice, the stop on the lever 95 engages with the part 86 of the feed mechanism, so that the two advance together ; immediately the nipper closes, the pressing-in device 42 is withdrawn independently of the movement of the feed-device by means of a spring rod 96 and a cam on the shaft which operates the upper jaw.