AGRICULTURAL INVENTIONS.

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.

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Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 5 / 157 题