. The street railway review . ce used formanufaclnring purpcpscs, liul rdl departments have been equippedwith the laU-^l impniMd ry. nnicli of which has been de-signed anil biiill by llir Rail\\ay Type Circuit Rrcakcrfor Direct (>urrciit I scs. riio Wctinghouse Electric & Manufacturing Co. has recentlyplaced on the the street railway circuit breaker shown in theillustration, which combines in one piece of apparatus a safetydevice and main switch, as it automatically opens the circuit on over-load or short circuit, and can be operated by hand to
. The street railway review . ce used formanufaclnring purpcpscs, liul rdl departments have been equippedwith the laU-^l impniMd ry. nnicli of which has been de-signed anil biiill by llir Rail\\ay Type Circuit Rrcakcrfor Direct (>urrciit I scs. riio Wctinghouse Electric & Manufacturing Co. has recentlyplaced on the the street railway circuit breaker shown in theillustration, which combines in one piece of apparatus a safetydevice and main switch, as it automatically opens the circuit on over-load or short circuit, and can be operated by hand to disconnect theear from the trolley circuit. It is intended to be installed over themotonnans head, in the place usually occupied by the canopy switch,but may be placed elsewhere if desired. It can be quickly closed,thus avoiding Ihe iucon\-enience and dela\ inoidciU tn replacing afuse. This circuit breaker is intended for direct-current use, and is madefor capacities of fio, 100, 150 and 200 amperes, with a range from go. WESTING llOLSE AV TYPE ITRCLIT I!RE.\I<ER. per cent to 225 per cent of normal rating The mechanism ismounted on a cast iron base and enclosed by a pressed metal handle for resetting projects conveniently from the side of thecase, and the plunger for tripping by hand extends through the coverand is provided with a composition handle for the hand to strikeagainst. The resetting handle is connected to the switch leverthrough a compression spring, which insures a firm pressure andgood contact, regardless of ihe natural wear lo which the parts maybe subjected in service. The arc is broken in a powerful magnetic field which efTectuallyopens the circuit under the most .severe conditions. The contactson which the arc occurs are surrounded by a shield of insulating andarc-resisting material, which prevents the arc from being communi-cated to any other part of the breaker. The contact is made up ofcopper strips separated by spaces, each acting indepe
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
