Canadian transportation & distribution management . Fig. 2. Detail of grab hook for lifting car wheel piston operating in a compressed aircylinder. By opening the controllingvalve, the wheel is lifted, when the armis swung round and the wheel is placedin the machine. The device by which thewheel is picked up is simple, but cleverlyarranged, and is shown in fig. 2. Thegreater the weight, the greater the tend-ency to pull down frame A, and spreadthe hooks B. The two boring mills arebelt driven, from a line shaft, an electricmotor being the source of power. Davisexpansion car wheel boring tools a
Canadian transportation & distribution management . Fig. 2. Detail of grab hook for lifting car wheel piston operating in a compressed aircylinder. By opening the controllingvalve, the wheel is lifted, when the armis swung round and the wheel is placedin the machine. The device by which thewheel is picked up is simple, but cleverlyarranged, and is shown in fig. 2. Thegreater the weight, the greater the tend-ency to pull down frame A, and spreadthe hooks B. The two boring mills arebelt driven, from a line shaft, an electricmotor being the source of power. Davisexpansion car wheel boring tools April, 1921. CANADIAN RAILWAY AND MARINE WORLD 201 The axle lathe, shown in fig. 3, is lo-cated near the boring mills, and is alsoserved by an air operated hoist of widerange, greatly facilitating the work ofplacing the axle in the lathe and takingit out after machining. The way in whichthe hoisting apparatus takes hold of theaxle, to lift it, is clearly shown in theillustration. The hoist gives great flexi-bility of movement, both horizontally andvertically. The wheel press is located close to the forced away from it. Fig. 5 shows the operation of press-ing on, , securing wheels to an this operation, the position of the up-right casting has been changed, and theram, equipped with a large sleeve,presses against the wheel center, the farend of the axle being blocked. The wheelpress is also fitted up with improvedmethods of handling the work to andfrom it. The long hook shown in fig. 4,operated from a vertical air pressure
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherdonmi, bookyear1921
