. Agricultural engineering; a text book for students of secondary schools of agriculture, colleges offering a general course in the subject and the general reader. Agricultural engineering. FARM MOTORS 373 The clutch is a vital part of the tractor and should be located as close to the engine as possible. The higher the speed at which the clutch rotates the smaller force it will have to transmit. The Gearing. The gears are an important part of the tractor. They should (1) be of liberal dimensions and of great strength; (2) be constructed of such materials as to resist wear to the greatest advan
. Agricultural engineering; a text book for students of secondary schools of agriculture, colleges offering a general course in the subject and the general reader. Agricultural engineering. FARM MOTORS 373 The clutch is a vital part of the tractor and should be located as close to the engine as possible. The higher the speed at which the clutch rotates the smaller force it will have to transmit. The Gearing. The gears are an important part of the tractor. They should (1) be of liberal dimensions and of great strength; (2) be constructed of such materials as to resist wear to the greatest advantage; (3) be adequately lubri- cated and protected from dirt and grit. Change of Speed. Change of speed is especially desirable with light tractors and is quite necessary where the land is rolling. The load which any tractor will draw is limited by the load it is able to draw up the steepest incline. If a reduction of speed be made for inclines or hills a larger load may be carried continuously. A reverse in direction of travel or a change of speed is accomplished in two general ways: by sliding gears, which is the accepted method now used in automobiles; and by plane- tary gears. The former is the simpler method but is not so convenient of operation. Planetary gears take their name from the gears, being fitted to a re- volving frame or spider. The Trucks. One of the most important parts of the modern tractor is drivins wheels> the truck, which consists of the frame and the steering and drive wheels. The frame is the backbone of the tractor, and to it are attached the bearings that carry the main axle and the shafts which support the gears. The Steering Wheels. Two methods of constructing the axle of the steering wheels are in common use. In one the. Fig. 23&. The truck for a gas tractor, showing frame, gearing, and steering and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and app
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagricul, bookyear1919
