. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . lipper. The slippers should beremoved from their holders and slippedbetween the third rail and the shoes thatmake contact with it. This lifts all theshoes from the rail and cuts off thecurrent. Then the motorman shouldeither tie up the broken portion of theshoe or remove it. In case a fire occurs on a train inany one of the heating or lighting cir-cuits, the switches controlling these cir-cuits should be immediatelj openedand the fire extingushed with the ap-pliances at hand. It sometimes hap
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . lipper. The slippers should beremoved from their holders and slippedbetween the third rail and the shoes thatmake contact with it. This lifts all theshoes from the rail and cuts off thecurrent. Then the motorman shouldeither tie up the broken portion of theshoe or remove it. In case a fire occurs on a train inany one of the heating or lighting cir-cuits, the switches controlling these cir-cuits should be immediatelj openedand the fire extingushed with the ap-pliances at hand. It sometimes happensso that an arc forms in the car wiring orunderneath the car, between tv/o ofthe wires coming into contact, or be-tween a wire and the steel frame of the March, 1910. RAILWAY AXD LOCOMOTIVE EXGIXEERIXG. 7 car. In this case the motorman mustopen the master controller switch inbis cab, thus opening all the circuitbreakers on the train. If this does notstop the arc, then he must open themain switches on the panels. If thesrc still continues, a train hand muStrun to the nearest cnK-rtr<.ncy -WITCH .k the glass front of the box anddown the ring inside. This startsilock-work mechanism in the mainrgcncy box in the nearest passcn-sfation, and rings a bell calling the■Its attention. It also drops an an-■■iator indicating the location of thefrom which the alarm comes. Theiti box immediately cuts off the cler-powcr from the section of track and;!ies the sub-station of the location•lie trouble. If the accident occursr a station the train man can runhe station and ask the station agent■urn in the alarm, which he must do■ri the main box in his case of a train jumping the track! causing a short circuit or rippingil the third rail from its supports,•mergency alarm must immediately^ent in. After an emergency alarmbeen sent in, a train man must gothe station and notify the train de-. itcher over the telephone as to thenature of the accident, the exact
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