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 314
ded that the great bearingsurface obtained hy this construction ranges from 2,000to 3,600 square inches, varying with the width of thetrack. Consequently the weight of the traction engineis so distributed that a pressure of but from four andone half to eight pounds per square inch is exertedagainst… … 308 The Modern Gas Tractor mired where the ground is wet and soft and the tractorcannot pack the soil and injure its fertihty as much asother forms which concentrate a greater amount ofweight on a lesser bearing surface. The wheel trucksare spring mounted and pivot on center in order to per-mit the…
Farm engines · Internal combustion engines
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
