. Electric railway journal . easy. The fall of the gate arm to the danger position isnot a sudden drop, as it is controlled by a band brake,which in turn is controlled by a governor. This brakeand its governor connection are so constructed that theyare adjustable, thus giving a quick or an extremely slowfall to the danger position. During the day the gate protection consists of a bell,a semaphore, a flexible barrier and a moving arm, andat night of a bell, a red light, an illuminated semaphoreand an illuminated barrier. SELF-TIGHTENING CABLE CLAMP The accompanying illustration shows a new self
. Electric railway journal . easy. The fall of the gate arm to the danger position isnot a sudden drop, as it is controlled by a band brake,which in turn is controlled by a governor. This brakeand its governor connection are so constructed that theyare adjustable, thus giving a quick or an extremely slowfall to the danger position. During the day the gate protection consists of a bell,a semaphore, a flexible barrier and a moving arm, andat night of a bell, a red light, an illuminated semaphoreand an illuminated barrier. SELF-TIGHTENING CABLE CLAMP The accompanying illustration shows a new self-tightening cable clamp for dead-ending and supportingfeeder cables, made by the Automatic Cable Clamp Com-pany, Donora, Pa. By the ingenious lever constructionof this clamp the cable is gripped with a force propor-tional to the tension applied. As it is boltless, it canbe attached in a minute. It holds the tighter thegreater the strain imposed, and can be removed quicklyas soon as the tension is released. When power cables. Boltless Cable Clamp are dead-ended with these clamps, the insulation isfirst removed from the cable for a distance of 5 in.,after which the clamp can be attached in far less timethan the old methods, and without soldering. Sharpturns and difficult adjustments are rendered easy withthis cable clamp. The clamp is built to withstandstrains of 10,000 lb. and is intended for cables of 250,-000 to 1,000,000 circ. mil in cross-section. February 21, 1914.] ELECTRIC RAILWAY JOURNAL 423 SHORT-CIRCUITED TEST OF A LARGE GENERATORWITHOUT EXTERNAL PROTECTION Before several central-station men, the engineers ofthe Westinghouse Electric & Manufacturing Companya short time ago deliberately short-circuited a 16,700-kva, 8800-volt generator, running at full speed andwithout resistance or any other protection in the cir-cuit. Oscillogram records showed that a current of21,000 amp, or twelve and one-half times normal, flowedthrough the generator. With earlier generators such a
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