Practical hand book of gas, oil and steam engines, stationary, marine, traction; gas burners, oil burners, etc.; farm, traction, automobile, locomotive; a simple, practical and comprehensive book on the construction, operation and repair of all kinds of engines (1916)
Rathbun, John B. [from old catalog] · Chicago, Charles C. Thompson co · leaf 330
eliminating weed seeds for the weeds areturned under while green, the seeds sprout and commence theirgrowth and are winter killed before they reach maturity. Inthis way the field is practically freed from weeds in the spring.When the weather again becomes suitable, the threshing may 324 GAS, OIL… … Operators View of the Big Four Tractor, Showing the FourCylinder Engine in Place. the horses but also performs work that no horse can do, anddoes it with far less expense. In the hottest weather whenhorses are dropping in the broiling sun, the tractor moves tire- 326 GAS, OIL AND STEAM ENGINES…
Internal combustion engines · Traction-engines
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