A tillage implement of concave, angled steel discs turned edge-on into the soil, which breaks and mixes the surface without inverting it the way a mouldboard plough does. Silas Moody's 1866 patent and Frederick Nishwitz's 1869 revolving harrow are the earliest patented ancestors of the type, with Nishwitz generally credited as the direct forerunner of the modern disc harrow.
Facts
Introduced Year OriginSilas A. Moody of San Francisco patented an earlier precursor, a row of circular cutting discs on a shaft, in 1866, three years before Nishwitz's revolving harrow. 1 Connections
Associated With
Source Disc Harrow (Wikipedia)
Sources
1. Disc Blades Spurred Steel Processes (Farm Collector)
Farm CollectorEvolution of the disc sectionQuote, Evolution of the disc section
The earliest U.S. patent I have found for a disc harrow, or at least a machine with a series of discs side-by-side on a shaft, was patented in 1866 by Silas A. Moody of San Francisco.
Disc Harrow (Wikipedia)
WikipediaName variations section
A disk harrow is a harrow whose cutting edges are a row of concave metal discs, which may be scalloped or set at an oblique angle.
Associated With: Plough, Lead section
It is an agricultural implement that is used to till the soil where crops are to be planted.
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