| 摘要 |
745,279. Coating glass fibres with metal. OWENS-CORNING FIBERGLAS CORPORATION. Nov. 9, 1953 [Nov. 10, 1952 ; Nov. 26, 1952], No. 30973/53. Class 82(2). [Also in Group XXIII] Metal-coated glass filaments are made by continuously drawing out glass into a filament and passing it through a body of molten metal supported by surface tension outside an orifice. As shown in Fig. 1, a rotating drum 16 draws out a number of glass filaments 13 from outlets 12 of a glass-melting tank, a gathering member 15 collecting the separate filaments into a group 17. Metal in an applicator 18 is kept molten by an electric resistance heater 20 and a slot in the portion 19 provides a meniscus through which the filaments 13 pass, and adjusting screws 23 and 26 are provided. Fig. 11 shows in greater detail an applicator similar to that of Fig. 1, but in which instead of a single horizontal slot providing the molten metal meniscus, each filament 112 passes through a separate vertical slot providing a bead 123 of molten metal. The container for the molten metal 117 comprises a refractory block 121 with a liner 114 which may be of graphite. A resistance coil 118 is provided. Fig. 8 shows a rod-type applicator 80 with a slot 90 providing a meniscus of moten metal for the filaments 86, and a channel 92 communicating with a cavity 91 which is supplied with metal wire from a spool 83 by motor-driven rolls 82. The rod 80 is electrically conductive (it may be a graphite rod) and a heating current is passed along its length. The coating of fibres of glasses such as calcium borosilicate glasses with metals such as iridium, zinc, lead and tin and alloys such as zinc-titanium, tin-lead, brass and bronze is described, and sizing materials such as waxes, gums, oils or molybdenum disulphide may be applied to the coated filaments before they are collected into a group. |
