| 摘要 |
398,999. Cables. UNITED ELASTIC CORPORATION, Easthampton, Massachusetts, U.S.A. Nov. 9, 1932, No. 22608. Convention date, Nov. 9, 1931. [Class 36.] An electric conductor or other cord is arranged so as to draw itself into coils or loops when released. A cable, according to the invention, comprises flexible conductors 2, each preferably having a cover 3 of rubber or asbestos. To produce loops a rubber cord 4 is laid up parallel to the conductors 2, crossing from side to side of the conductors 2 at intervals. The cord 4 is in a stretched condition, and is secured to the conductors 2 at the ends and at crossing points. Preferably the conductors 2 and cord 4 are enclosed in a flexible cover braided round the rubber strands. The conductor 2 and cord 4 may be woven together in a loom, a cover 10 being then braided on, the cable being led through a bath of rubber cement or rubber latex before the braiding. Two covers may be braided on, the cable being led through a second rubber bath between the braidings. To produce a helical coil the cord 4 is laid on the same side of the conductors throughout. Fig. 6 shows such a cable in which one section is reversely coiled with reference to the other. The cover may be stiffened, e.g. by the addition of waterglass or hard glue to the latex, to limit the amount of bending.
|
