Fig. 20 neral view of construction for accelerated wear tests throughout its whole length. All wearing sections exceptthose of concrete were laid on a 2-in. concrete base of1:3:6 mixture. The concrete wearing sections were made6 in. deep. The wearing machine (Fig. 20) consists of 5cast iron wheels… … r ■ ¥ ?/ SO Runs 1650 Rur>s ■BHH ^Hs kI ri- ^~> HI I ■ Sj—W ... *^ ?/£0 rtuns* 2/SO Runs
Automobiles · Aeronautics
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