. Electric railway journal . FIG. 5-—GENERATOR FOR USE IN MAKING ELECTRIC ARC WELDS FIG. ti—WELDING RAIL JOINTS WITH THE ELECTRIC ARC 192 Electric Railway Journal Vol. 51, No. 4 plates. It was found that the Brinell hardness test andthe scleroscope test showed no material change. Thisis a matter of the utmost importance in obtaining asubstantial joint. In Fig. 8 are shown the results of the sclero-scope test on one of these arc welded joints. The re-sult of a test made at the Watertown Arsenal was alsoexamined, and it was found that the tensile strength. FIG. 7—APPARATUS FOR ARC WELDING OF JOI
. Electric railway journal . FIG. 5-—GENERATOR FOR USE IN MAKING ELECTRIC ARC WELDS FIG. ti—WELDING RAIL JOINTS WITH THE ELECTRIC ARC 192 Electric Railway Journal Vol. 51, No. 4 plates. It was found that the Brinell hardness test andthe scleroscope test showed no material change. Thisis a matter of the utmost importance in obtaining asubstantial joint. In Fig. 8 are shown the results of the sclero-scope test on one of these arc welded joints. The re-sult of a test made at the Watertown Arsenal was alsoexamined, and it was found that the tensile strength. FIG. 7—APPARATUS FOR ARC WELDING OF JOINTS of the joint was greater than the plates transverse test made on a 4-ft. span and with a con-centrated load of 50 tons at the center showed lessthan V4 in- set. The electrical conductance of these joints comparesfavorably with that of the solid rail. Up to date thePublic Service Railway has installed about 1000 of theelectric arc-weld joints of various kinds and consideringthe newness of the method the joints seem to be satis-factory. It is ourintention to continuethe installation ofthese joints, partic-ularly when trafficcannot be held up. It is the writersopinion that thesewelds are not onlyapparently satisfac-tory but have twostrong features intheir favor; first,low cost; and, sec-ond, convenience ofinstallation. More-over, a minimumamount of pavementneed be disturbedin order to install a joint. Then again, it is con-venient to install joints as the rail is being laid so thatthe track work can be completed one small piece at
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