. Electric railway journal . DOUBLE TROLLEY WAS INSTALLED OVER THE GRADE UPTO THE ELEVATED TRACK—SIMPLE SINGLE-TRACKPOLE AND M\ST-ARM CONSTRUCTION. ONE OF THE ELECTRIC LOCOMOTIVES USED BY NORTH-WESTERN L TO HANDLE ST. PAUL FREIGHT a Westinghouse Type D-3-F 35-ft. compressor designedfor continuous duty. All equipment is mounted insidethe cab. The trucks are of Baldwin Locomotive Com-pany manufacture. Pneumatic Wrenches Used for TighteningTrack Bolts IN SEVERAL recent operations of laying rail, theLehigh Valley Railroad has used pneumatic wrenchesfor running up and tightening the track bolt
. Electric railway journal . DOUBLE TROLLEY WAS INSTALLED OVER THE GRADE UPTO THE ELEVATED TRACK—SIMPLE SINGLE-TRACKPOLE AND M\ST-ARM CONSTRUCTION. ONE OF THE ELECTRIC LOCOMOTIVES USED BY NORTH-WESTERN L TO HANDLE ST. PAUL FREIGHT a Westinghouse Type D-3-F 35-ft. compressor designedfor continuous duty. All equipment is mounted insidethe cab. The trucks are of Baldwin Locomotive Com-pany manufacture. Pneumatic Wrenches Used for TighteningTrack Bolts IN SEVERAL recent operations of laying rail, theLehigh Valley Railroad has used pneumatic wrenchesfor running up and tightening the track bolts. Asthis was its first attempt the organization workedout for the operation was somewhat of a makeshiftcharacter. In one instance an air compressor was pushedalong by hand and four pneumatic wrenches wereattached to it by air hose. This arrangement coveredtwo joints at one time. In another case, a motor carwas attached to the compressor and but two wrencheswere operated. The time for running up a joint andmoving to the next averaged about thirty seconds perjoint. The men released by the machine were placed atwork on the old rail preparing i
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