. Charles V. Mapes'. Agricultural machinery. It is made of a flat bar, and clasped to the side of the beam, as shown by the annexed cut,—(Fig. 86). Or passes through the beam and is fastened by a gripe and key, as shown by the annexed cut,—(Fig. 87). Or is made of a round bar and clasped to the side of the beam, as shown by the annexed cut,—(Fig. 88). Or is made of a thin circular plate, re- volving on its own axis, and the stem or shank clasped to the beam, as shown by the annexed cut,—(Fig. 89). Fig, 88. ^Fig. 89. The rake of the cutter forward may be greater or less at pleasure; though in s
. Charles V. Mapes'. Agricultural machinery. It is made of a flat bar, and clasped to the side of the beam, as shown by the annexed cut,—(Fig. 86). Or passes through the beam and is fastened by a gripe and key, as shown by the annexed cut,—(Fig. 87). Or is made of a round bar and clasped to the side of the beam, as shown by the annexed cut,—(Fig. 88). Or is made of a thin circular plate, re- volving on its own axis, and the stem or shank clasped to the beam, as shown by the annexed cut,—(Fig. 89). Fig, 88. ^Fig. 89. The rake of the cutter forward may be greater or less at pleasure; though in some conditions of the soil and the sod it is best set raking, for the edge will thereby the better free itself of the loose roots and stems that may incline to double over and remain upon it. The adjustment of the cutter to the beam is such as readily to admit of its being raised or lowered, set more or less raking forward, or its edge turned to or from land at pleasure. Fig. 90 represents the Lock Coulter. The lock coulter is made of wrought iron, steel-edged. It passes through the plow-beam and is made fast on top with a key, and locks through the share and mould-board where they join together. The adjustment is a very strong one, both for the coulter and plow, and fits the implement for working among stones, stumps, and roots, as the coulter cannot be turned out of place or broken by such obstacles. Fig. 90. The Lock Coulter. The Skim Coulter, Fig. 91, is usually placed a few inches for- ward of the cutter, and the stem or shank is attached to the beam by an iron clasp with nuts and screws to make it fast. The skim coulter promotes highly finished plowing, particularly that of lap- ped sod. It shaves oft' the grass edge of the furrow-slice, and the turf thus taken off" is carried over on the turning slice, till it drops into the furrow-channel and is buried. The edges of the lapped slices being thus freed of the sod, no grass springs up between The SkSn Coulter,
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectagricul, bookyear1861
