torsof 36 horse power each, through the medium of trans-mission gear-ing. The mo-tor - trucks re-ceive currentby means of aslip-shoe and acontact rail,which is car-ried on thebottom of thelateral girder,somewhat t othe inside ofthe main sup-porting I-beam.The truck-frames em-brace the rail-girders… … The Return Loop at the Zoologischer Garten Station. ited by two projections on the lower part of the hook-shaped frame, as shown in one of our diagrams. The cars swing around the curve in a slightly in-clined position and spontaneously reassume their nor-mal vertical position when a straight part…
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