Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 963
nction,that, while piles receive the blows of the monkey on their heads, the tubes arc nol struck at all, theblow being communicated by the clamp, which receives the blow near the ground. The tube-well, asordinarily used, is not intended for piercing rock or solid stone formations, but it is finite… … stone are reached, special means of drilling have to be provided for it. When coming upon rock orstone, the best plan is to pull up the tube and try in another spot. This applies also when deepbeds of clay are driven into; for, by going a little distance off and testing again, in many cases…
Mechanical engineering -- Dictionaries
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