the time necessary to bring the metal to the temper- shaped, composed of two large trough irons, 10 inches deep, A spring heated red hot, hardened in cold water and softened and a flange plate riveted tothem. The diagonals are placed ature of the bath (about 110°). It immediately produced a rather… … the same results as the saline specially broad (2 feet 2 solution, but I have only inches, which is 7 inches more than the bottom flange), so that the proportion of spripg hardened with cold oil (a weaker hardening than the mentioned this one because it appears to me to be the most length to width…
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