Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 603
n the upperportion of Fig. 417. In burning seams, however, the small flameshown in the lower portion of that figure is more desirable. After the metal has thoroughly set, the tongs or clamps may beremoved and the joint trimmed up a little if necessary for appear-ance. It is always well to leave the… … FIG. 420.—METHOD OF BURNING LUGS TO BUS-BARS. turned on, the electrolyte may be added. It is important that thisshould not be done before. The electrolyte, consisting of a mixture of pure sulphuric acidand water, preferably distilled, should indicate a specific gravity of1190 on the ordinary…
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