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Page:Popular Science Monthly Volume 44.djvu/49

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41
ELECTRICITY AT THE WORLD'S FAIR.

has been found capable of welding metals which have heretofore resisted all attempts to unite them direct, and which have therefore had to be brazed or soldered. Wrought iron, copper, brass,

PSM V44 D049 Carriage axle welder.jpg
Fig. 8.—Carriage-axle Welder.

silver, platinum, gold, aluminum, and even cast iron may not only be welded together, but may also be welded to one another in many different combinations. In addition to welding, all sorts of brazing may be done by this method, as the same heat which