. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . he deck of the tank, and a chainplaced around the back end of the main frame on the BREAKDOWNS. 211 disabled side, and around the tie. This style of blockingis shown on Plate 91. It will also be necessary to buildup between the bed of the tank and the tie in order totake up all lost motion of the chain, so that when thewheel is run off the wedge the chain or block on top ofthe driving box will hold up the rear end of the engineframe and prevent the driver from
. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . he deck of the tank, and a chainplaced around the back end of the main frame on the BREAKDOWNS. 211 disabled side, and around the tie. This style of blockingis shown on Plate 91. It will also be necessary to buildup between the bed of the tank and the tie in order totake up all lost motion of the chain, so that when thewheel is run off the wedge the chain or block on top ofthe driving box will hold up the rear end of the engineframe and prevent the driver from settling to the 88 shows a block placed son the middle driving boxand under the frame. While going around curves, awedge or tie should be placed between the engine andtank on the inner side of the curve, or a chain placedfrom the disabled side of the engine frame to the tankframe on the opposite side. The purpose of the tie,wedge or chain is to prevent the good wheel on the op-posite side from dropping off the rail. It will be neces-sary to proceed with caution while rounding curves andpassing over frogs and Forward Tire, Eight-Wheel Engine. If a forwardtire of an eight-wheel engine breaks, the forward drivershould be run on a wedge considerably thicker thanthe tire in order to allow for settling, the cellar re-moved and a block substituted, and the space betweenthe pedestal brace and the cellar blocked up solidly(Plate 89). If the engine is equipped with an overhungspring rigging, a block should be placed between thespring saddle and the top rail of the frame; if an under-hung spring rigging, the forward end of the equalizer 212 BREAKDOWNS.
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