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Scientific American, Vol. 22, No. 6 (February 1870) (1870)

leaf 7

An illustration from Scientific American, Vol. 22, No. 6 (February 1870), 1870, leaf 7
it may be desired to plow. The forward part of to one of the openings, and if no flash is obtained, these The advantages claimed for this instrument are accuracy, the descending bar should be sharpened so as to pass readily openings are again covered up, and the small flame applied cleanliness,… … always preferred to use petroleum pa- that it bears upon the bricks both btlow JENNINGS' SHOVEL PLOW GUARD. per, which he can make himself at any and above it, and its length is such that time. He strongly recommends his method to ell who can ment may be attached either to single or doublt; shovel…

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