Patent GB-274193-A (GB)
Title: Improvements in or relating to combing machines
IPC: D01G19/26
Filed: 1926-04-15
Abstract: 274,193. White, A. E., (Whitin Machine Works). April 15, 1926. Combing-machines.-In a combing-machine of the Heilmann type the nipper frame is suspended from swinging links one attached to the front part and the other to the rear part. The path of the nipper towards and from the detaching- rollers is controlled by the links. The feed-roller and the top-comb are mounted on the nipper frame, and the operation of these parts, together with the opening and closing of the nipper is derived from the movement of the links. The nipper-frame 37, Fig. 7, is suspended by links 39, 40 pivoted to a bracket 41 on the machine frame. The upper jaw 4 of the nipper is carried by arms 45 pivoted on the shaft 44, to which are attached the links 42 connecting the nipper frame to the operating rock-shaft 14. The side-plates of the nipper frame extend rearwardly and the arms 46 carrying the top comb 8 are pivoted on such extensions. The arms 46 carry studs 49 resting in slots in struts 47 pivoted to arms 48 carried at the bottom ends of the front links 39. The swinging of the links 39 allows the struts 47 to lower the top-comb into its active position as the nipper frame swings towards the detaching- rollers. The top-comb is adjusted by means of a plate 51 bolted to the arm 46, the plate carrying the stud 49 which projects through a slot in the arm. The top-comb can be lifted, and the pins 49 placed in an offset notch 50 in the slots in the struts 47 to maintain it in its raised position. The arms 45 carrying the upper jaw 4 extend rearwardly and are connected to levers 56. The ends 55 of the levers are linked to the arms 43 on the rock-shaft 14. The arms 45 and lever 56 are connected by springs 60, which tend to close the nipper. Projections 62 on the levers 56 engage at a point in the movement of the nipper frame with adjustable abutment screws 63 on the arms 45 and force open the nipper against the action of the springs 60. The lap feed roll 3 is held in bearings carried by adjustable rods 69, Fig. 12, supported in a frame 70, pivoted to the nipper frame at 72, and provided with springs 73 to press the roll 3 against the cushion plate of the nipper. The springs are connected by finger hooks 74 to the nipper frame 37. The roll 3 is operated by a ratchet and pawl which derives its motion from one of the rear links 40<1>. This link has an extension 64 to which is adjustably bolted a plate 65 connected by a link 66 to the frame 67 carrying the pawl. The rear top detaching-roller 7 is rocked over the lower roller by means of a link 77 attached to the forward link 39 and to a pivoted strut 80. The connecting-stud 79 is the pivot of a stirrup lever 81 for the detaching-roller. This lever 81 is connected to a weight lever 83 pivoted to the frame at 84. If the weight lever is raised a stud 86 on it slides in a slot in a latch lever 87, which falls by gravity into position to catch the stud in a notch and support the weight. The front top-detaching-roller 9, Fig. 8 is held by a stirrup lever 89 pivoted to an adjustable bracket. 91. A link 93 connects the lever 89 to a rocker member 95 controlled by weighted arms 97. The member 95 can be moved by a handle 99 to relieve the weights, and a hook 100 pivoted on this handle is arranged to engage under a fixed plate to maintain the weights inoperative. The rock-shaft 14, Fig. 3, is operated by means of an eccentric 24 on the comb-shaft 26. The strap 23, which is adjustably mounted on the eccentric, is connected to an arm 22 on a shaft 21 carried in bearings 17 mounted on a plate 16 loose on the shaft 14. The plate 16 is adjustably secured to an arm 15 keyed to the shaft 14. The shaft 21 also carries a slotted arm 29 which engages a stud 30 carried by a bracket 31 which is adjustably secured to the machine frame. By these means the movement of the rock-shaft is such as to give the nipper a movement which is accelerated throughout substantially its entire path in one direction, and decelerated substantially throughout its entire path in the other direction. The means for operating the rockshaft 14 may comprise a slotted arm 16a, Fig. 15, adjustable around the shaft 14 and a block 35 sliding in the slot and carrying a pivot 21a which works in a pivoted arm 33 and in the strap 23 of the eccentric 24.