. The street railway review . , CedarRapids; C. C. Hammond, Mason City; and the manager of theEagle Grove Electric Co. The next meeting of the association will be held in Milwaukee,commencing on Wednesday, Jan. 18, 1905. r VVestinghouse Oil Circuit Breakers. The new type of electrically operated autumatic oil circuit breakerwhich is illustrated herewith has recently been put upon the marketby the Westinghouse Electric & Co. It is designedfor voltages of from 3,300 to and is adapted to the modernsystem of distant control. This circuit breaker is made in single pole imits,
. The street railway review . , CedarRapids; C. C. Hammond, Mason City; and the manager of theEagle Grove Electric Co. The next meeting of the association will be held in Milwaukee,commencing on Wednesday, Jan. 18, 1905. r VVestinghouse Oil Circuit Breakers. The new type of electrically operated autumatic oil circuit breakerwhich is illustrated herewith has recently been put upon the marketby the Westinghouse Electric & Co. It is designedfor voltages of from 3,300 to and is adapted to the modernsystem of distant control. This circuit breaker is made in single pole imits, each beingmounted apart from the switchboard in a brick or concrete com-partment. Combinations of dilTerent numbers of poles are madeby placing the units side by side. The base of each unit is oftreated soapstone and carries two heavy porcelain insulators whichsupport the stationary contacts and the connection to the externalcircuit. On breaking the circuit the final arc is taken by a specialtip, which is easily WESTINdllolSK (III. 1 IKCLIT l!KH.\KEI(. The movable contacts arc in the shape of truncated cones whichfit into corresponding surfaces made of copper springs. This in-sures a positive contact over the entire surface. The inner surfaceof the tanks is shaped so as to require the minimum amount of oiland the open position is in all cases maintained by gravity. A pow-erful electro-magnet is arranged with its movable core attachedto a system of levers so that when the magnet is energized the cir-cuit breaker is closed. A second electro-magnet acts as a trippingcoil and may be controlled by a relay. switch mounted onthe base operates by the motion of the levers in opening or closingthe main switch and this controls a telltale indicator and circuit breakers have no live parts exposed. Advertising Literature. HAPPY I>AYS the title of the picture Hint decorates the De-cember calendar of the Lumen Bearing of Buffalo. N. makerof
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
