. Electric railway journal . the concrete and the pulling andtearing up the track with the derrick have also aidedgreatly in bringing down the cost of track reconstructionover the ordinary hand method. CONVERSION OF CABLE TO ELECTRIC TRACK The process described is not suitable where old cable track opposite the track which has been pulled, the hammerbeing located on the outer end of the boom. The boom ofthe hammer is swung out, and the hammer legs are placedon the pieces of concrete which are lying in the ditch. Suc-cessive blows are applied, from two to six blows being suffi-cient. The pieces
. Electric railway journal . the concrete and the pulling andtearing up the track with the derrick have also aidedgreatly in bringing down the cost of track reconstructionover the ordinary hand method. CONVERSION OF CABLE TO ELECTRIC TRACK The process described is not suitable where old cable track opposite the track which has been pulled, the hammerbeing located on the outer end of the boom. The boom ofthe hammer is swung out, and the hammer legs are placedon the pieces of concrete which are lying in the ditch. Suc-cessive blows are applied, from two to six blows being suffi-cient. The pieces of concrete are gradually broken in this March 15, 1913.] ELECTRIC RAILWAY JOURNAL way, large and small. The top layer is broken first. Thesmall pieces are then placed at the side of the trench, afterwhich the hammer goes over the job once more, repeatingthe process and breaking up the remaining pieces of con-crete which were on the bottom layer. It is not necessaryto shatter the bottom layer completely. It is sufficient if. San Francisco Track—Tearing Up Track of Old CableRailroad wise damaging the track, a large two-prong hook is usedin conjunction with the derrick car, the hook being attachedto the end of the derrick rope. The derrick then pulls 011the cable, and the hook tears up large pieces of concreteand asphalt. These pieces sometimes are 6 ft. long and thesame width as the space between the rails. This process
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Keywords: ., bookcentury1900, bookdecade1900, bookidelectricrailway411913newy
