. Electric railway journal . Journal 331 Making Emergency Gears to KeepCars in Service Gear Was Constructed by Shrinking a Steel RimMade from Car Wheel Tires On Center Portionof Wornout Gears By W. C. Butler General Manager, Pernambuco Tramway & Power Company, Ltd. NEVER in my experience with electric traction hasit been so difficult to keep the wheels turning, asduring the last twelve months. This has been especiallytrue with South American railways where the limitationplaced on exportation, the present difficulty of oceanshipment, and the attendant delays, have made it ex-ceedingly difficult
. Electric railway journal . Journal 331 Making Emergency Gears to KeepCars in Service Gear Was Constructed by Shrinking a Steel RimMade from Car Wheel Tires On Center Portionof Wornout Gears By W. C. Butler General Manager, Pernambuco Tramway & Power Company, Ltd. NEVER in my experience with electric traction hasit been so difficult to keep the wheels turning, asduring the last twelve months. This has been especiallytrue with South American railways where the limitationplaced on exportation, the present difficulty of oceanshipment, and the attendant delays, have made it ex-ceedingly difficult to obtain any ma-terial at all. The PernambucoTramways have been subjected toparticular hardship as when the warbroke out in 1914 they were in theearly stages of construction, withonly a few miles of track in actualoperation, and with practically nomaintenance material on hand. Someconstruction material had been im-ported before the war, and due tothis we have 65 miles of track, 100motor cars arid fifty trailers in op-. locomotive tires available from a defunct steam railway,which had been eliminated by electrification. Thesetires, together with the worn-out gears removed fromour equipment, constituted the raw material which weused. The locomotive tire was first roughed out in awheel lathe to the approximate dimensions necessary forthe new gear rim. After this rough turning the tireswere cut into two pieces and reduced in the blacksmithshop to the proper radius for gear rims. After this theywere turned inside to finished dimensions ready to beshrunk on the half center portion. The old teeth were turned off from the worn-out gearand arranged with a dovetailed construction for receiv-ing the band. In assembling the half bands were heateduniformly to a cherry red, and put into a vise, whenthe cold half center was slid into thedovetail and the band was allowedto shrink on. The rim thus grippedthe center by means of the dove-tail section in such a way as to ren-der it impossible fo
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
