Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . may be molded on a cylindrical former. The Scotch tvheel-ploiv c has a forward carriage to regulatethe depth of furrow, one wheel running on the laud and theother in the furrow. They seem generally to have that wedge-formed, convex shape to the front portion of the mold-board,which with their long handles constitutes their most peculiarfeature in our eyes. The l


Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . may be molded on a cylindrical former. The Scotch tvheel-ploiv c has a forward carriage to regulatethe depth of furrow, one wheel running on the laud and theother in the furrow. They seem generally to have that wedge-formed, convex shape to the front portion of the mold-board,which with their long handles constitutes their most peculiarfeature in our eyes. The long handles give the plowman greatcommand, and if he were to ride ou the handles as we do onours in going over a cradle-knoll he would throw the shareclean out of the ground- They will not be in favor except incountries long subdued to cultivation, as they take so muchroom to turn. We like a short plow, and hitch the team asclose to the work as ;iible. This matter of hitcliing closewas well illustrated during the late war. The old ramblingway of hitching up a six-mule team with six feet distance be-tween the pairs was discarded, and their traces and fifth chainswere shortened in, so that they could almost browse upon the. tails of the span in advance, — as they did in fact. The oldstiff tongue fourteen feet long, and the span« hitched up two orthree paces apart, remind one of the practice not yet quiteexploded in England, of hitching three horses, tandem fashion,to a plow, which was universal till Dawson e f Frogdcn, Scot-land, about 1770, showed how to place them abreast, for whichthe British farmers owe him a debt of gratitude, and after try-ing it fifty years to make sure it was all right, are prepared topav on demand. At the latter end of the eighteenth century, the level landsof Herefordshire and Radnorshire, Great Britain, were turned byplows which were rigged with wheels to obviate the necessityof a plowman. As usual at that time, the horses were hitcli<dtan


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Keywords: ., bookcentury1800, booksubjectin, booksubjectmechanicalengineering