| 摘要 |
1,069,085. Tensioning and liquid treating elongate materials. G. A. HALLIDAY. May 8, 1964 [May 15, 1963], No. 19253/64. Headings DID and D1L. A device for tensioning an end 28 e.g. of roving ribbon or glass fibre strand particularly in the fabrication of articles by winding resin wetted glass fibres on a mandrel, comprises a vessel 14 containing a liquid e.g. an epoxy resin, means, e.g. an eyelet 20 and grooved rods 22, 24, 26 to guide the end through the liquid and close to wall means, preferably in the form of a V-shaped groove formed between faces 32, 34, such that the liquid on the surface of said end is in slipping relation with said wall means thereby to tension the end. As shown the vessel 14 floats on a liquid 12, e.g. glycerine, in a fixed container 10 and is attached to a fixed post 19 by a wire 16 and spring balance 18, the balance showing the tension in the running end. The grooved guide rod 22 in liquid 30 under which the end passes is mounted on a pivoted shaft 36 having an upstanding arm 38 which passes through an opening in a plate (42) see Fig. 3, not shown, mounted by screws (44) to be adjustable in the direction of end travel on the fixed lid of vessel 10 thus when the tension in the end tends to increase e.g. by increase in speed due to increase in diameter of the object being wound, and the vessel 14 moves forwards against the spring balance 18, the lever 38 engages the plate (42) to rotate the assembly 38, 36, 22 clockwise, raise the rod 22 and so lift the end higher in its groove thereby decreasing the drag imposed on it by the groove; by a suitable arrangement of dimensions the tension in the end can thus be maintained substantially constant. To maintain the viscosity of the liquid (30) at a desired value the liquid 12 may be heated. Several ends may pass, side by side through a single vessel 14.
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