Chicago Trolley Clamp
|
[Trade Journal] Publication: Western Electrician Chicago, IL, United States |
||||
|
Chicago Trolley Clamp.
The accompanying illustrations show a new trolley wire clamp devised by John S. Gustin, purchasing agent for the Electric Merchandise company, Chicago. The clamp is formed in three distinct parts, having two sections with opposing lips, one of which is provided with a threaded projection upon which the clamping nut is screwed, the other having a dog enclosed by the protruding lower rim of the nut. Through the lower portion of these opposing sections, a grove is formed to contain the trolley wire, the
size of which does not call for a different construction of the clamp. The opposing lips are cut at such an angle that they still engage each other when the largest trolley wire is inserted in the groove. The screwing down of the nut upon the threaded projection and over the dog causes the lips to slide one within the other, thus forcing together the lower sections of the clamp upon the wire, preventing all possibility of falling. The movement of the wire from expansion and contraction is provided for in the hinge joint included in the nut. With this clamp it is claimed that an absolutely reliable support is provided for the trolley wire, while at the same time its simple mechanism makes its adjustment at any place upon the wire, or entire removal therefrom, an easy task. The clamp is said to be equally efficient whatever may be the style of insulator used. The Electric Merchandise company, Chicago, is sole agent for this device.
|
