The modern gas tractor, its construction, utility, operation and repair: a practical treatise defining every branch of up-to-date gas tractor engineering, driving and maintenance in a non-technical manner. Considers fully all types of power plants and their components, methods of drive and speed changing mechanisms. Describes design and construction as well as practical application of tractors in the field (1919)
Pagé, Victor Wilfred, 1885-1947 · New York : Scientific American Pub. Co. · leaf 413
FiG. 174.—View Showing Mechanism of Avery Self Lift Plough. shaft. As the gears turn, the eccentrics pass underthe rollers in the plough hfting cranks, and in this man-ner the ploughs are lifted directly by means of powerinstead of by the usual hand lever. Many traction engine operators, especially… … EIGHT BOTTOMPLOW ■ u— u u ^ ■ u u u ^ TOOTH HARROWS I ■ u -u u d Vj u -M » <i TOOTH HARROWS Fig. 175.—Plan Views of Combination Hitches That SaveTime and Labor. A—Plough, Packer and Toothed Harrow.B—Plough, Packer, Drill and Toothed Harrows. The Modern- Gas Tractor 407
Farm engines · Internal combustion engines
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