. Electric railway journal . section of track before and after having rail-joint BOOSTER INSTALLED NAL of Sept. 1, 1917 and Jan. 19, 1918. It consists ofa white oak block, 24 in. long, 10 in. wide and 5 in. block is imbedded in angles and supported by a i-in. bed of asphalt, which serves as a shock absorbingcushion in the same way that it does in the mechanicaltie. Covering the entire top of this block is a i-in. steelplate, on which the rail rests. Eight bolts with rail-clip heads pass through the plate and block and are. THE RAIL-JOINT BOOSTER anchored at the bottom in angles and m
. Electric railway journal . section of track before and after having rail-joint BOOSTER INSTALLED NAL of Sept. 1, 1917 and Jan. 19, 1918. It consists ofa white oak block, 24 in. long, 10 in. wide and 5 in. block is imbedded in angles and supported by a i-in. bed of asphalt, which serves as a shock absorbingcushion in the same way that it does in the mechanicaltie. Covering the entire top of this block is a i-in. steelplate, on which the rail rests. Eight bolts with rail-clip heads pass through the plate and block and are. THE RAIL-JOINT BOOSTER anchored at the bottom in angles and metal straps,which in turn extend beyond the block and provide ameans for anchoring the joint booster into the concretesuperstructure. With the joint booster, low joints arerepaired and the rail ends brought to surface quickly,with comparatively small cost, and without in any wayinterrupting car operation. The pavement and superstructure immediately sur-rounding the low joint which is to be repaired, and to adepth of 13 in. or 14 in. below the rail base, is re-moved, the old joint tie is cut in two, and the part sup- Electric Railway Journal Vol. 52, No. 19 porting the rail at the joint is taken out and replaced bythe joint booster. The booster is clamped in place onthe rail base and welded its full length to the rail, as-suring an efficient current return. The rail is jackedup until the base is at its original level and the trenchbeneath the booster is then filled with moist this concrete has been thoroughly t
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
