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3-phase A.C. locomotive armature axle shaft Baldwin Locomotive Baltimore and Ohio Benjamin Franklin Bo-Bo Body and Frame bogies built Burgdorf-Thun Commiers commutator conductor rail current recuperation D.C. and single-phase Dafc's decided to electrify Depoele direct current driving wheels electric locomotive electric machinery electric railways Electric Traction electric underground England F. J. Sprague firm four pantographs gear wheels gearless motors Giovi h.p. motors haul hollow axle illustration shows Individual Axle Drive inventor large number line locomotive loco locomotive illustrated London Transport m.p.h. The locomotive main line Manchester-Sheffield miles long motion rails motor coaches motors drive motors usually sit multiple-unit nose-suspended Ohio R.R. Output overhead line Phase A.C. railway line Ren6 Thury Simplon single-phase A.C. Single-Phase Railways Southern Region steam locomotive supplied Swiss Federal Railways T. A. Edison Territet test-cars test-line tests Three-phase A.C. to-day Tonnes Weight tons trains transformers triangular connecting rod volts Weight 29.6 Tonnes Werner von Siemens wire