Patent GB-1058925-A (GB)
Title: Process and apparatus for producing continuously combed sliver from carded sliver
IPC: D01G27/04
Filed: 1963-07-23
Abstract: 1,058,925. Producing sliver; carding engines; sliver accumulator. KUREHA SPINNING CO. Ltd. July 23, 1963 [Aug. 22, 1962; Sept. 25, 1962; Oct. 12, 1962; Oct. 24, 1962; Dec. 10, 1962], No. 29175/63. Headings D1F and D1N. Natural or synthetic fibres or blends thereof are fed to carding engines 1 the doffers of which are clothed with a wire as shown in Figs. 1A, 1B (not shown) to improve the transfer of fibres. The doffers are rotated at a slower speed than is usual to produce a heavier web than is normal. The webs then pass via reserve boxes 2 and mutual conveyer means 3 to a combined device 4 (Fig. 4, not shown) which draws the combined web, calenders it and winds it into a lap 34 (Fig. 4). The laps are wound and released as described in Specification 1,024,615. The full laps are then automatically doffed by a device 5 (Fig. 5, not shown) and placed on a saddle of a storage device (Fig. 8, not shown). The storage device also conveys the full laps to combing heads each of which is preceded by a lap doubling device 61 and drawing device 63 (Fig. 9, not shown). Leaving the combing heads (Fig. 10, not shown) the laps are calendered and then drawn at 84, each lap being split into slivers. The slivers then undergo further drafting in a device 90 which also automatically regulates the thickness of the slivers before being collected and coiled in a can 87. This sliver is then suitable for feeding to a roving frame or directly to a ring frame. Sliver reserve box. Between each carding engine and the conveyer leading to the drawing and lap winding apparatus, there is a sliver reserve box (Fig. 12, not shown) in which sliver may be accumulated or from which sliver may be withdrawn when the apparatus is started or stopped so allowing for the difference in inertia between the carding engine and the subsequent conveyer. The box comprises an inlet trumpet 103 adjacent the calender rolls 102, 102' of the carding engine and hinged thereto a box 104 open at the top and counterpoised by a weight 106. If conveyer 3 (Fig. 32) is stopped the box begins to fill, sinks and operates micro-switches 109, 110 to switch off the carding engine; during the time it takes the carding engine to stop the sliver is fed into the box. When the conveyer is restarted sliver is drawn from the box which rises to release the microswitches and start the carding engine. Conveying device The full laps 34<SP>1</SP> on saddles 41 (Fig. 8, not shown) are lifted therefrom by spool holders 155 (Fig. 15, not shown) on an arm 154 circulated by a chain 153. The lap is lifted from the spool holders by a moving carrier (Figs. 16, 17, not shown). This carrier travels in a direction u (Fig. 18, not shown) and delivers each lap to a unit 203 (Figs. 19, 26, 27, not shown) running on rails 202, 202<SP>1</SP> lying parallel to the several heads of the comber. Each head has a device 261 (Fig. 19, not shown) for feeding a doubled lap to the comber. The unit 203 is controlled by a series of micro-switches, abutments and solenoid operated clutches and has a hinged saddle 231. It receives a lap from the carrier and the weight of the lap operates a micro-switch to start the unit moving. It is stopped at position 203<SP>11</SP> (Fig. 18, not shown) until a full lap is required at a camber head. It then moves to that head and the saddle is tilted (Fig. 27, not shown) to discharge the lap on to the feeding device 261. Nippers 248, 249 (Figs. 26-31) a stroke plate 260 and a lap end holding bar 240 are provided on unit 203 and operated by micro-switches and solenoid operated clutches to ensure a continuous lap feed when a spool 35 (Fig. 19) is discharged from the lap doubling and feeding device and a new lap 34B placed thereon. The empty spools are dropped out on to a receptacle 205. The spool cones used are shown in Figs. 34A, 34B (not shown). These are made to protrude from the sides of the lap to facilitate automatic handling.