Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 491
nes were operated bysteam : the fall passing through the leading-blocks to the drum o;a steam engine. PILE, SCREW AND SCREW MOORING. To Alexander Mitchell, Esq., of Belfast, Ireland, theprofession is indebted for this discovery, by means of which we are now able to construct permanentfoundations in… … The plan which appeared best adapted for obtaining a firm hold of soft ground or sand, was to insertto a considerable distance beneath the surface a bar of iron, fig. 3063, having at its lower extremity abroad plate, or disk of metal, in a spiral or helical form, on the principle of the screw, in…
Mechanical engineering
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