Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880

Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880

Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880 - A Weekly Journal of Practical Information,...
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Author: Various
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Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880

Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880

$19.99 $9.99

Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880

$19.99 $9.99
Author: Various
Format: eBook
Language: English

Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880 - A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures

Mr. Sterling A. Millard, of Clayville, N. Y., has invented a scythe blade that contains much less weight of metal and possesses equal or greater strength than the ordinary scythe blades. It is made in the usual manner from what is termed by scythe makers a "scythe rod," and is wrought and shaped in such form that a proper thickness is left to serve as the back of the blade. A longitudinal auxiliary rib or supplementary back is formed on the blade, which stiffens the scythe without requiring the same weight of metal as those of the usual construction. Mr. George C. Winslow, of Kalamazoo, Mich., has patented an improvement in spring harrow teeth, which consists generally in hinging the harrow tooth in the forward end of a rectangular frame bolted to the harrow bar, and combining therewith a spring, which at its back end is clamped to the harrow bar by the same bolts which secure the rectangular frame, and which spring then curves upward and forward, and then down through the slot or opening of the rectangular frame, and is jointed at its extremity, near the bottom of the harrow tooth, so that its tension serves to throw the harrow tooth forward, but allows it to yield to obstruction. ......Buy Now (To Read More)

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Ebook Number: 38482
Author: Various
Release Date: Jan 3, 2012
Format: eBook
Language: English

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