Patent GB-1202916-A (GB)
Title: Method of and apparatus for sizing warps
IPC: D06B1/14
Filed: 1967-11-06
Abstract: 1,202,916. Apparatus for treating textiles. KAWAMOTO INDUSTRIAL CO. Ltd. 6 Nov., 1967 [19 Nov., 1966], No. 50373/67. Heading D1L. Apparatus for sizing a plurality of yarns with a size the major portion of which is wax and which is in a solid state at room temperature and in a liquid state at a temperature above room temperature, comprises means for aligning the yarns in spaced relationship in a plane and advancing them through the apparatus, heating means to render the size in the liquid state, means to apply the liquid size to the yarns, heated rolls to rub the surfaces of the size coated yarns to aid uniform distribution of the size on the yarns and a chamber having an inlet and outlet for the yarns in the rear and front end walls and an operable top cover and provided with means to circulate air therein to solidify the size on the coated yarns. In Fig. 1 yarns 3 are withdrawn from supply section A comprising a plurality of creels 1 having a plurality of cheeses 2 mounted thereon and passed via comb 4, guide rollers 5 and 6 and carrier roller unit 7 comprising a power-driven main roller 7a and two auxiliary rollers 7b and 7c to sizing section B comprising a chamber 10 defined by an openable top cover 11, front and rear end walls having outlet slot 13 and inlet slot 12 for the yarn respectively and opposite side walls and comprising electric heaters 14, size vat 15 having an electrical heater and containing molten size 16, heated, driven sizing roller 17, the lower portion of which is immersed in the molten size and the top of which is in substantially level with the path of the yarns, doctor roller 18 which rotates either in the same or opposite direction to the roller 17 which controls the amount of molten size which adheres to and is transferred by the periphery of the roller 17 to the yarns and size levelling rollers 19, 20 and 21 in sliding contact with felt member 65 adapted to wipe off molten size adhering to the peripheries of the size levelling rollers. They are then passed to size solidifying section C comprising chamber 22 defined by rear and front end walls provided with inlet slot 24 and outlet slot 25 respectively for the yarns, opposite side walls and an openable top cover 23, and containing a cooling means 27 equipped with a fan and connected to an air supply duct 28 and air suction duct 29, and guide rollers 26 which divide the yarns into several groups 3B of rows of yarns to facilitate cooling. The yarns are then passed through comb 30 by guide rollers 31 and 33 and dancer roller 32 to beaming section D where they are passed through comb 35 and round measuring roller 36, beaming roller 37 and twitch roller 38 to take-up beam 39. If the operation of the apparatus is suspended push-up roller 8 is lifted to push the rows 3A of yarns upwardly out of contact with the sizing roller 17. The driving source and drive force transmission mechanism E is divided into two systems, one comprising a D.C. motor 40 the drive force of which is transmitted to transmission shaft 41 to which speed change mechanisms 42, 43, 44, 45, 46 and 47 are coupled, and the other comprising D.C. motor 48 which drives takeup beam 39 through speed change mechanism 49. In the sizing section B the doctor roller 18 may be substituted by an upper sizerroller disposed above sizing roller 17 in rolling contact therewith and the top periphery of which is in contact with the yarns so that the molten size is transferred from the roller 17 to the yarns by the upper sizer roller, or the doctor roller may be replaced by a doctor knife made of felt.