Steam Plowing: Description of the Operations of the Williamson Road Steamer and Steam Plow, on the Seed Farms of Messrs. David Laundreth Son, at ... Pa;, Etc;, Etc;, Etc (Classic Reprint) - Hardcover

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Excerpt from Steam Plowing: Description of the Operations of the Williamson Road Steamer and Steam Plow, on the Seed Farms of Messrs. David Laundreth Son, at Bloomsdale, Near Bristol, Pa;, Etc;, Etc;, Etc

But the application by Mr. Thomson of a. Rubber tire four and a half inches thick, and twelve inches broad, not only overcomes this difficulty through its elasticity, but, by the weight of the engine, the rubber is flattened out as the wheels revolve, thus increasing the bearin g surface upon the ground from less than one hundred square inches (as it would be with an inflexible tire), to six hundred square inches with the rubber.

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