Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 589
quenched in water from 950° C. Fig. 22. Same as Fig. 20—reannealed. X.so. service. The demand for this equipment appears to be more set-tled than that for other electrical equipment, for when businessconditions are such that ordinary purchases of equipment aredeferred, arc welding becomes of… … Deep etched welds. Note improper joining at base of V in 2. Fig. 24. ^ti/^
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