Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 587
Same as Fig. 16—quenched from 8oo°C. in water. X50. Fig. 20. … Same as Fig. 19—reannealed. X50. of welding. The selling price of arc welding apparatus exclusiveof accessories and supplies, sold in the U. S. during 1920, isestimated at approximately $2,000,000. Accessories and supplies,such as electrode material, etc., will probably amount to $2,500,000. Nov.,…
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