l application. system of change-speed gear. 6 miles per hour, grades not to exceed 5 per cent, and A new system has just been developed by Charles M. The driver of the truck, who is shown in the pho- average road conditions, the drawbar pull rpnm'rrs Manly, who is probably best known for his work… … movement of the latter has been made. while one of the motors, of which there are two, one The hydraulic engine. An engine drives During the entire year of operation, the hydraulic for each of the rear wheels, is indicated at B, the each wheel. drive system of the truck has required no repairs…
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