| Francis S. Wiggins - 1840 - 512 Seiten
...reins. When he is to turn the plough at the end of a furrow, or when it encounters an obstacle, such as a large stone, he presses down the handles, so...fulcrum, and the share is raised out of the ground. As the perfection of good ploughing can only be atttained by prqctice, it must be evident that nothing... | |
| Francis Simmons Holmes - 1842 - 264 Seiten
...end of the furrow, or when it encounters an obstacle, such as a stone, he presses down the handle, so that the heel of the plough becomes a fulcrum, and the share is raised out of the ground. As the perfection of good ploughing can only be obtained by practice, it must be evident that nothing... | |
| Jesse Buel - 1847 - 298 Seiten
...steady its motion; the effect being produced by merely altering the direction of the line of draught. In ploughing, it has been seen, a slice of earth is...below not being tilled at all, but left thus : Fig. 1. The plough is of the most perfect form when its various parts are so adjusted that they shall not... | |
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