Winch attachment applied to Holt tractor being case hardened. Ball or roller bearings are usedthroughout and the gears and moving parts are enclosed. … An air filter for tracks and tractors A Self-Cleaning Air Filter AN air cleaner ir/ which felt is used as a filteringmedium has recently been placed on the market bythe Staynew Filter Co. As will be seen from the accom-panying cut the device consists of a cylindrical, perforatedshell, into which is…
Automobiles · Aeronautics
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