Patent GB-478513-A (GB)
Title: Improvements in and apparatus for the treatment of artificial threads
IPC: D01D10/04
Filed: 1936-07-17
Abstract: <PICT:0478513/IV/1> <PICT:0478513/IV/2> <PICT:0478513/IV/3> <PICT:0478513/IV/4> <PICT:0478513/IV/5> An artificial thread cake in untouche form as prepared in the spinning box is disposed on a carrier plate and subjected thereon, without handling or wrapping in fabric at any stage and without modification of the prepared form, to washing and other after-treatments, centrifuging, drying, and winding-off.  The carrier plate comprises a plurality of vertical or nearly vertical members capable of entering the hollow centre of the cake and disposed on a base adapted to carry and position the cake centrally with respect to the vertical members and to permit them to interengage the corresponding members of a second carrier plate placed underneath.  The process is applicable to the treatment of large cakes having a very long length of wound thread.  As shown in Fig. 1, each hollow carrier plate has a crown of vertical rods c and enlarged upper and lower outer rims a, b which serve to maintain the cakes in central position.  The carriers are perforated near the rims to prevent accumulation of liquid.  A cake is transferred from the spinning box by inserting the crown of rods of an inverted carrier and then turning spinning box and carrier through an angle of 180 DEG .  The cakes with their carriers are mounted in column form on a treating apparatus.  The rods c are arranged so that those of a lower plate extend into the spaces d between those of the next plate above. There is thus obtained a column of plates and cakes of considerable stability. The stability may be increased by insertion of a perforated tube k, Fig. 3.  The upper and lower surfaces of the carrier plates may be covered with wool or flannel.  The column may be provided with a head-piece centred by a cover l, Fig. 3, or l<1>, Fig. 4, and pressed down by a screw m or m<1>.  Openings n or n<1> allow air to escape at the beginning of treatment, and a small amount of liquid to escape during treatment so as to ensure continuous flow of fresh liquid.  At completion of the wet treatments, the column is dismounted, and the plates with their cakes are placed separately in centrifuges.  As shown in Fig. 5, the motor-driven plate e carries a crown of ribs f which are pressed outwards under centrifugal force by bell-crank levers g until they lie against the inner wall of the cake between the bars c of the carrier plate.  The central position of the cake is ensured by a plate h fixed to the centrifuge.  The cakes are removed from the centrifuge and dried on the carriers in hot air or a vacuum.  Re-moistening for facilitating winding off may be effected by allowing water vapour to pass through the cakes.  For winding off, each cake still on its carrier is provided as shown in Fig. 7 with a conical body o provided with openings p to engage the bars of the carrier plate.  The body o may be maintained in a central position by means of a bolt q, and spring r.  The thread p  may be wound off in vertical, inclined or horizontal position.  If desired an elastic sleeve may be inserted in the cake before placing the conical body o in position.