. Electric railway journal . e broad-ened scope of the electric arc welders; the increaseduse of power drills in regular maintenance as well asconstruction work, and the general rearrangement ofstorage yards, including the installation of variousforms of labor saving devices therein. Arc Welders Assume Importance inEffecting Economies It is somewhat difficult to indicate just where thegreatest savings have been effected or to indicate anyparticular tool or device which has been so signallysuccessful as to excite exceptional comment. Yet therecan be but little doubt that the use of the several
. Electric railway journal . e broad-ened scope of the electric arc welders; the increaseduse of power drills in regular maintenance as well asconstruction work, and the general rearrangement ofstorage yards, including the installation of variousforms of labor saving devices therein. Arc Welders Assume Importance inEffecting Economies It is somewhat difficult to indicate just where thegreatest savings have been effected or to indicate anyparticular tool or device which has been so signallysuccessful as to excite exceptional comment. Yet therecan be but little doubt that the use of the several formsof arc welders now available has contributed a verylarge share in effecting many economies in men andmaterials. These devices had their origin in the useof the acetylene flame as first presented to the industryunder the name of the autogenous welding it involved the use of rather expensive gases, andits range of use was somewhat limited, the process soongave way to the arc welder, using the very convenient. Bach ot rail grinder has its place 518 Electric Railway Journal Vol. 51, No. 11 power from the overhead wire, until to-day there is noroad of any size which is without some form of arcwelding apparatus. With the use of the arc weldercame a rapid development in the use in connectionwith the application of a simplified form of electrically-welded rail joint. The early type of arc welder consisted of an arrange-ment of grid resistances which was effective but costlyif the exorbitant use of power due to resistance losses
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