. Automotive industries . which arealso able to travel on good roads at the speed of con-ventional motor trucks. Previous forms of caterpillartracks were usually developed for low-speed agricul-tural purposes, and high speeds were difficult to main-tain, due to the wear and the mechanical losses in thetrack itself. Increased efficiency is attributed to thefabric track illustrated. Running on its wheels, the carcan make about 45 miles per hour. With the tracksapplied, a maximum speed of 37 miles per hour on goodroads has been attained, which, so far as is known, isthe highest speed ever develop
. Automotive industries . which arealso able to travel on good roads at the speed of con-ventional motor trucks. Previous forms of caterpillartracks were usually developed for low-speed agricul-tural purposes, and high speeds were difficult to main-tain, due to the wear and the mechanical losses in thetrack itself. Increased efficiency is attributed to thefabric track illustrated. Running on its wheels, the carcan make about 45 miles per hour. With the tracksapplied, a maximum speed of 37 miles per hour on goodroads has been attained, which, so far as is known, isthe highest speed ever developed by a track-laying typeof vehicle. Each track consists of two rubberized fabric beltswhich are connected together by steel stampings rivetedto the belts, the ends of the stampings being turnedover to the inside so as to form a guide into which thetires fit. Any clogging material which may lodge onthe upper side of the track is forced through the largeopening in the track, which is a feature of this typeof In addition to the regular wheels of the car, there areprovided four extra wheels, two on each side, of thesame size as the regular wheels and located betweenthe front and rear regular wheels. These extra wheelsserve as carriers, the track under the regular wheelsbeing normally off the ground. Standard regular tires are used, and after 1300 miles of opera-tion, under conditions which would have damaged thetires of a regular Ford, the tires and fabric track showedno wear. There was a nominal amount of wear on thereplaceable steel cross links. For steering, a pair of separate brakes is providedwhich permit of locking the driving wheel on either regular gear ratios of the Ford are too high forthis vehicle to operate satisfactorily in soft ground, deepmud, wet marsh, etc., and a commercial auxiliary trans-mission, which doubles the gear reduction, is introducedin the drive shaft directly in front of the rear axlehousing. For operation on
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
