. Automotive industries . The crankshaft is 2% diameter and the camshaft, 1% in. The cooling fanis gear-driven through a friction clutch. Steering is effected by applying power to one truckonly by means of a large multiple disk clutch operatedby long levers extending transversely across the trucks are spring-mounted, each oscillating inde-pendently of the other. Hardened steel rollers mountedon roller bearings carry the tractor. The track centerdistance is 41% in., the standard equipment consistingof IIV2 in. shoes with a track length of 61 in. The tracklinks are drop-forged an
. Automotive industries . The crankshaft is 2% diameter and the camshaft, 1% in. The cooling fanis gear-driven through a friction clutch. Steering is effected by applying power to one truckonly by means of a large multiple disk clutch operatedby long levers extending transversely across the trucks are spring-mounted, each oscillating inde-pendently of the other. Hardened steel rollers mountedon roller bearings carry the tractor. The track centerdistance is 41% in., the standard equipment consistingof IIV2 in. shoes with a track length of 61 in. The tracklinks are drop-forged and heat-treated. A doubleflanged front idler contacts with the spools of the final drive is through 3172 per cent nickel steel, cutand hardened gears which are inclosed and operate inoil. The total length of this tractor is 112 in., the height tothe top of the radiator, 59 in.; the over all width, 53*4 in-,and the width inside the tracks, 30% in. The groundclearance is IIV2 in., the draw bar height, 16y2 in. and. Best 30 tracklayer tract. February U, 1921 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE 447 the ground pressure, lb. per squareinch. A 12 x 7 in. pulley is provided,which at 800 gives a belt speed of2513 ft. The tractor carries 28 fuel (either gasoline or distillate,though kerosene equipment can be fur-nished as an extra). The weight of thetractor is 7400 lb. An upholstered seatwith spring-supported, upholstered back-rest is an attractive feature of thismachine. Allis-Chalmers 12-20 The Allis-Chalmers Co., which hereto-fore has been manufacturing a four-plow18-30 and a single plow 6-12 model, hasjust added an intermediate size having a12-20 rating. This machine is of theframeless type and is, of course, complete- ^^^^^^^ly manufactured by the Allis-ChalmersCo. This concern has evidently decidedto get out a full line of farm tractors and become animportant factor in the tractor field. At the show ademonstration was given several times a day of th
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
