. Charles C. Mapes'. Les machines agricoles. Fig. 83. Ou deux "roues sont utilisés, l'un exécuté sur les hautes terres, et l'autre dans le sillon-canal, comme illustré par le cut,-(Fig. 83). Dans les deux cas, la roue-châssis est étreint au ,^^ , poutre dans une manière qui admet volontiers de relever ou d'abaisser la roue pour donner de n'importe quelle profondeur de travail ; et, lorsqu'elle est réglée à un moment donné, et il y fait vite en serrant le fermoir, le labourage sera de profondeur uniforme dans l'ensemble. L'outil de coupe. Il s'agit d'une simple annexe à la charrue en tournant la SOD. Il sépare le sillon-coupe de la m

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. Charles V. Mapes'. Agricultural machinery. Fig. 83. Or two "wheels are used, one running on the upland, and the other in the furrow-channel, as shown by the annexed cut, —(Fig. 83). In either case, the wheel-frame is clasped to the , ^ , ^ beam in a manner that readily admits of raising or lowering the wheel to give the plow any desired depth of work; and, when adjusted to a given point, and there made fast by tightening the clasp, the plowing will be of uniform depth throughout. The Cutter. This is an important appendage to the plow in turning sod. It Separates the furrow-slice from the main land by an easy, smooth cut, securing a tiue edge and uniform width to the slice, and a highly-finished style of plowing, with a saving of draft to the team. Without the cutter the furrow-slice would be torn off the land by the breast of the plow, its edges would be bristling and ragged, its width irregular, and its inversion by the mould-board would not be at all times so sure. A vessel is directed and controlled by its rudder, and so is a sod plow by its cutter; and hen6e the importance of the correct adjustment of the cutter; for very much in proportion as it is wrongly set, will the plow work wrongly, notwithstanding its capacity in other respects to do nice and finished work. When a particular style of plowing is desired, such, for instance, as lapped or flat, the set of the cutter must be governed by a consideration of that kind of plowing, or the desired work will not be realized. The following cuts will assist to illustrate this point: Fig. 84 represents a cutter set for plowing flat furrows. It should stand as much inclined toward the mould- board side as the land-side of the plow does, and it is generally best to set it even a little more so, in order to obtain that bevelled edge of the furrow-slices so essential to their sure and finished matching-in side by side as they come over from the plow, and to do perfectly flat work, as shown by Fig. 84. Fio-. 85 repre

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• bookcentury1800
• bookdecade1860
• booksubjectagricul
• bookyear1861