Patent GB-357908-A (GB)
Title: Improvements in process and apparatus for the wet treatment of artificial silk spinning cakes and other wound yarn packages
IPC: D01D10/04
Filed: 1931-01-12
Abstract: <PICT:0357908/IV/1> <PICT:0357908/IV/2> <PICT:0357908/IV/3> <PICT:0357908/IV/4> Artificial silk spinning cakes and other wound yarn packages are placed on washing bars and carried underneath drip baths.  The washing bars are mounted upon stationary recessed ledges in a plurality of vertical stages and are mechanically transported stepwise from one pair of recesses to the next.  At certain places in each stage the spinning cakes are turned or rotated through a definite angle.  The cakes may be wrapped, for protection during the washing treatment, in wide meshed coverings such as tubular knitted artificial silk fabric.  Bobbin windings may be treated with or without their tubes.  Artificial silk may be washed free of acid and salt, desulphurized, bleached, oiled and otherwise treated.  As shown in the drawings, the cakes are hung on carrying bars 1 which may be glass tubes or rubber covered steel tubes, resting on stationary rails 2 which are provided with recesses for receiving the bars and are arranged on both sides of the machine frame.  Transversely over the apparatus are mounted drip boxes 25 in stages above the cakes. After an interval of time the bars are moved forward and thus travel right through the apparatus.  The cakes therefore come under the various columns of baths in succession.  The forward movement of the bars if effected by means of movable rails 3 provided with recesses at equal distances for the reception of the bars.  The rails 3 are connected with cranks 4 or else with eccentrics so that every recess in the rails describes a complete circle.  When a recess is traversing the upper arc, the bar 1 located in it is conveyed from one recess in the stationary rail 2 to the next.  While the lower arc is being described, the bars 1 rest in the recesses of the stationary rail.  After traversing a complete circle, the movable rails are stationary for a definite time.  The drive is simplified by connecting the movable rails to a framework 6 to which the cranks 4 are attached.  For the transfer of the washing bars from one set of movable rails to the next, the rail ends opposite one another are laterally offset so that they may pass each other. The last recess in the movable rail of the first frame sets down a cake bar in a recess of the stationary rail and then the first recess of the next frame takes up the bar and conveys it further. A device for turning the cakes is shown in Fig. 9.  On the stationary rail 2 there is provided a pin 11 and a small bearing 12.  The movable rail 3 carries a pivot 9 on which is mounted a fork 13, slidable upon the pin 11.  Upon the bearing 12 is set internally a lever 14 and externally a lever 15.  A turning cylinder 16 is supported on lever 14, and the lever 15 has a rolling surface for a roller 10 carried by the movable rail 3.  In operation, the fork 13 seizes a cake bar in the recess 17 and lays it in a recess 18 at the same time laying the cakes carried by the p bar on the roller 16.  The roller 10 then raises roller 16 into its highest position by pressing upon the lever 15.  The cakes are thereby lifted up and turned on the bar in the recess 18.  In order to obtain exactly one complete revolution of the cranks 4 at regular intervals, the crank driving shaft 19 carries a chain wheel 20 keyed to the shaft, and a loose chain wheel 21, 22 on each side of the fixed wheel.  A three-fold endless chain 23 passes over the three chain wheels.  The central portion of the chain has only as many pins as the fixed chain wheel 20 has teeth. The chain is driven from a shaft 26 carrying a fixed chain wheel 24 with two rings of teeth which mesh with the outer portions of the three-fold chain.  The driving motor may thus start idly and with one revolution of the chain the crank 4 revolves only once exactly.  The motor itself is adjusted by means of an electrical time switch to the running and stopping times required for operating the machine.