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 416
ne Drag. ploughed, packed, seeded, and harrowed in practicallyone operation. The illustration at Fig. 176 shows apractical application of a plough, packer, tooth harrow,and drill, actually in use in the field. That at Fig. 177clearly demonstrates the utility of a disc harrow orplough and stone drag… … m/\yvwvyvvvv\)^.il /VV/VVVV/Jl DRILL iteMffiFMm Fig. 178.—Simple Three Drill Hitch Easily Made by Any Farmer.
Farm engines · Internal combustion engines
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