Engineering and Contracting . ut 80 , , ,,. , r o/i<^ lbs. to the square inch, lation of the controllmg valve, a row of 3/15- g^ j^e use of these equipments, five men are m. holes has been drilled in the cylinder at a ^^le to bend in an hour as many rods as thev point about two-thirds of the distance of the ^^^^^ bg^j [„ g^ 8-hour day by the formerforward stroke. The outfit weighs about 650 lbs., and is port-able. It may be used in railroad construction,for the bending of rails, by connecting the cyl-inder to the air brake system of a locomotive 100$ $ $17
Engineering and Contracting . ut 80 , , ,,. , r o/i<^ lbs. to the square inch, lation of the controllmg valve, a row of 3/15- g^ j^e use of these equipments, five men are m. holes has been drilled in the cylinder at a ^^le to bend in an hour as many rods as thev point about two-thirds of the distance of the ^^^^^ bg^j [„ g^ 8-hour day by the formerforward stroke. The outfit weighs about 650 lbs., and is port-able. It may be used in railroad construction,for the bending of rails, by connecting the cyl-inder to the air brake system of a locomotive 100$ $ $ 300 $ $ $ 500 $ 125$ $$ 325$ $ $ 525 $ 150$ $$ 350$ $ $ 550 $ 175$ $$ 375$ $ $ 575 1 .10 Ai Cylinder /y\ y @ 1 Tib —? —ah 1 i| __° i__2jl5i) 1 in 11 iibii 141U1-- 1 62 Fig. 1. Bending Tool for Reinforcing Bars. or train. The-cut made when a rail is broken,however, is not clean enough lo allow piecesto be joined up properly, in laying track, with-out finishing them off with a cold chisel. The system has been very satisfactory inoperation at Balboa. A gang using it canbend rails much faster than by any other sim-ple field process, and can break rails a great process of heating them in forges and bendingover anvils. As the quay wall and pier re-quire a total of approximately 4,000,000 lbs. ofbent rods in their reinforcement, the saving intime and money by the use of these equipmentsis considerable. The cold-bending process, in-stead of lessening the strength of the steel, isbelieved to conserve it.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
