Heat Treatment Of Steel.

Case-hardened versus Oil-hardened Gears. B OTH CASE-HARDENED and oil-hardened gears are largely used in iiutomobile construction. Some engineers pfefer the latter method of......

Multiple Load Handling.'

.The Stamper Tipping Trailer and its Commercial Application. A DESCRIPTION of the loading truck system developed by Capt. C. W. Stamper appeared in The Commercial Motor of......