. Railway mechanical engineer . truck frame. The horizontal or driving yoke A transmits thedriving power from the axle to the frame while the verticalor torque yoke C resists torque or the tendency of the axleto rotate and also has a slight forward and backward motionwhen compensating for the angular movement of the drivingyoke. The double concentric helical springs (not shown on thedrawing) support only the truck load. They are looselyseated in the frame and axle members which are tied togetheragainst rebound with spring bolts, swiveling in their flexibility provided by this const
. Railway mechanical engineer . truck frame. The horizontal or driving yoke A transmits thedriving power from the axle to the frame while the verticalor torque yoke C resists torque or the tendency of the axleto rotate and also has a slight forward and backward motionwhen compensating for the angular movement of the drivingyoke. The double concentric helical springs (not shown on thedrawing) support only the truck load. They are looselyseated in the frame and axle members which are tied togetheragainst rebound with spring bolts, swiveling in their flexibility provided by this construction permits thedriving axle to negotiate either smooth or rough road sur-faces, increasing traction without loss of power efficiency orclamping or binding the parts. Of equal importance is theelimination of maintenance expense, looseness and rattling when torque reactions are taken through sliding surfacesused in conventional constructions. The large, lubricated,trunnion bearings and adjustable ball and socket joints insure. Fig. 2.—Driving Axle Equipped with Duplex Compensating Sus-pension durability of parts for the life of the machine. A phantomview of the mechanism is shown in Fig. 2. Emphasis is laid on the importance of the duplex com-pensating suspension because machines of the industrial
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
