Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 248
at the same t^ime relieve the seatfrom the pressure of the water; and this is effected by means of friction-rollers A A, which inimediatdly,upon the commencement of the lifting of the gate, act as short inclines, thus taking tlie pressure fromthe seat, and throwing it upon the friction-rollers or… … —A Iron loclc-ciates.—The frames of thoseat the Wet Dock at Montrose are of cast-iron, and entirely covered on both sideswith wrought-iron boiler-plate: •wherethey are placed the entrance is 65 feetwide in the clear, and the centre of theheel-post is 1 foot within the face of thewall, the distance…
Mechanical engineering · Mechanics · Engineering
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