GB325246A - Improvements in or relating to apparatus for the production of artificial silk and the like - Google Patents

Abstract

325,246. Borzykowski, B. May 11, 1928, [Convention date]. Divided on 311,391. Spindle apparatus. - To enable the washing, and if desired other liquid treatments, to be carried out on the cakes of artificial silk &c. as obtained when spinning according to the centrifuge method, and particularly for the purpose of carrying out the process described in Specification 311,391, a resilient perforated sleeve v is inserted in the cake in order to protect the inner layers of thread. Further, in order that the cake may be more easily removed from the spinning pot, the latter may be provided with a removable perforated lining n, Figs. 2 and 3, formed of a plurality of parts provided with projecting ears o which engage with slots m formed on the interior of the spinning pot, while the lining is supported by ribs k; alternatively, existing pots may be used, a lining consisting of a multi-part ring n, Fig. 3, or of a resilient ring n<1>, Fig. 4, provided with supporting ribs s, being employed. To protect the threads, the lining or rings may be covered with muslin. During the formation of the cake, washing liquid is supplied through the spinning funnel; after the washing operation is completed, softening liquid is supplied to the spinning pot, the resilient perforated sleeve v having first been inserted in the cake. As an alternative, the spinning pot may be double-walled, as shown in Fig. 6, the space w between the inner perforated wall and the solid outer wall communicating with passages w<1> discharging at points near tne pocket for the spindle; and in this case the pot may be provided with an iner lining n. For the after-treatments the pot is mounted on a seating y, Fig. 6, forming part of a suction system z, and the cake washed or otherwise treated with liquid in the manner described in Specification 239,482, [Class 2 (ii), Cellulose &c.], or the pot may be fitted with a tightly-fitting cover 2, Fig. 7, provided with a connection 3 through which liquid is forced; the resilient perforated sleeve v is preferably fitted in the interior of the cake during these treatments. Reference has been directed by the Comptroller to Specification 297,118 [Class 2 (ii), Cellulose &c.].