Patent GB-163332-A (GB)
Title: Improvements relating to machines for combing textile fibres
IPC: D01G19/00
Filed: 1921-05-18
Abstract: 163,332. Schleifer, R. May 19, 1920, [Convention date]. Combing-machines. - In a combing-machine of the type described in Specification 118,833, the drums carrying the nippers are provided with notched discs 19, Fig. 3, and are rotated intermittently by pawls 24 pivoted on segments 21 oscillated by an eccentric 23 on the main shaft 18. The segments for the two drums are connected by a link 22. The discs are also provided with locking-pawls 28, so connected to the driving-pawls by a link 25 and lever 26, that, when the driving-pawls are in engagement with the discs, the locking- pawls are. inoperative, and vice versa. The pawls are operated by a cam 30. The eccentric 23 and cam 30 may be arranged on the same shaft. The nipper ja.ws 1, Fig. 8, are provided with sleeves 1<a>, loose on shafts 34 carried by heads 3 secured to the nipper drum shaft 4. When the nipper is open, the jaw 1 is forced against a stop 33 by a spring 32. The jaws 2 are provided with sleeves 2<a>, and are secured to the shafts 34. A spring 35 tends to keep the jaw 2 in its open position. The jaws are controlled by a lever 38, Fig. 13, secured to a shaft 39 which can oscillate in bearings in the heads 3 and is connected by a link 37 to a lever 36 secured to the shaft 34. The linked levers can take up a position as shown on the right in Fig. 13, with the points of articulation 41, 37<1> of the link 37 in a straight line with the axis of the shaft 39, in which case the jaw 2 is forced against the jaw 1 and moves it slightly away from its stop 33 against the spring 32, or a position as shown on the left of the Figure, in which case the jaws are open. The levers are moved by cams 43,.44 engaging bowls 42 on the joints 41 of the levers 38 and links 37. Stops 40 prevent the joints 41 moving too far beyond the straight line locking position. The opening-cams 44 and closing-cams 43 are all connected by gearing 43<1>, 45, 44<1>, 46. In a machine for combing short fibres in which the nipper drums are provided with four nippers only, opposite pairs of nippers are connected so that when one is shut the other is open and vice versa. The nippers in this form can be controlled by one cam for each drum. The oscillating blades 6, 11, 12, Fig. 16, which place the ends of the tufts of fibre between the jaws of the nippers, and assist in removing the combed tuft are interconnected by a rod 52 and are operated by a crank 47 on the main shaft 18, and on the pin of the crank is hung a sleeve 48 through which slides a rod 49 connected to a lever 50 linked to an arm 53 on the axis 6<1> about which the blades 6 moves. The comb 7 which enters the lap being fed as the nipper tears off a tuft is operated from the axis 6<1> through a curved link 64 and pivoted arms 61, 60. The comb is carried by an arm 59 pivoted on the axis of the feed roller 54. The arm 59 carries a pawl 66 and rotates the feed rollers intermittently through a ratchet 67. The arms 60, 61 being moved into a straight line when the comb is in its active position act to support the comb under the drag of the fibres. The drawing-off device comprises a roller 72, Fig. 18, on which the combed fibre is pressed by the blade 12 and a roller 73 which is adapted to roll forward over the roller 72 to grip the fibre, and then when the nipper opens to move back with the roller 72 and lay the tuft of fibre upon an intermittently moved apron 74. The roller 72 is operated by a ratchet wheel 82 and a pawl 81 carried by the moving segment 21 operating the last nipper drum. A link 85 attached to the same segment operates a second ratchet 86 which moves the apron 74. The roller 73 is moved by arms 75 operated from a cam 79, and is pressed against the roller 72 by a spring 80.