The life, times, and scientific labours of the second Marquis of Worcester : to which is added a reprint of his Century of inventions, 1663, with a commentary thereon (1865)
Dircks, Henry, 1806-1873 · London : B. Quaritch · leaf 422
l made moveable on thepivots at c c. Fio-. 2. Is a section of theseal. It consists of two metalplates, B B, and D D, having anumber of corresponding holesdrilled through them, as at a a a a,and h h h h^ into which the endsof small rollers, ah^ah^ are madeto fit and tm-n exactly. Whenall the holes… … 2. a a a a n BiiOiiiiDI^ bhh h D 390 THE CENTURY, surface of eacli plate, are to have a groove cut in each,smiilar to a screw head; this is to be effected by cuttinglines from end to end of the plate, as shown at e e, e e,Fig. 1. With a gi-aver a small dot is next to be made,all to the right on one…
Worcester, Edward Somerset, Marquis of, 1601-1667 · Inventions · Industrial arts -- History
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