. Annual report of the American Institute, on the subject of agriculture. Science. No. 216.] 269 furrow follows. Now I assert that this is not in accordance with the natural operations of the furrow as it rises and turns from its horizontal to its perpendicular and inclined position. Practical ex- perience has shown me that the surface of the mouldboard should be a curve as shown by a straight line drawn from the forward point on the lower side of the mouldboard diagonally to the upper end. This line will be one inch above the surface in the middle. Lines drawn at right angles to this line, wi
. Annual report of the American Institute, on the subject of agriculture. Science. No. 216.] 269 furrow follows. Now I assert that this is not in accordance with the natural operations of the furrow as it rises and turns from its horizontal to its perpendicular and inclined position. Practical ex- perience has shown me that the surface of the mouldboard should be a curve as shown by a straight line drawn from the forward point on the lower side of the mouldboard diagonally to the upper end. This line will be one inch above the surface in the middle. Lines drawn at right angles to this line, will be one quarter of an inch above the surface. The furrow will follow the curved lines in- dicated in cut Fig. 2. Fig. The time and money I have expended on the plow are equivalent to five thousand dollars. The advantages the public have derived can be estimated by hundreds of thousands, while my returns have not exceeded one thousand dollars. Plough makers have paid to Jethro Wood sums that should have come to me the real inventor of the improvements. This was done in consequence of improper laws passed by Congress in his favor. In Mr. Jefferson's letter to Sir John Sinclair in 1798, you will find Mr. Wood's mouldboard described. In Ransom's history of ag- ricultural implements, Johnson's encyclopedia of agriculture, and in the English journals since 1800, you will see that Robert Ransom invented a cast iron share as early as 1785. He also invented the process of chilling the point of the share. A farmer in Suffolk, England, made, in 1790, cast landsides. Mr. NeM'bold, of Orange. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Institute in the City of New York. [Albany, N. Y. : s. n.
Size: 1088px × 2296px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, bookpublishe, booksubjectscience
