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Knight's Mechanical Encyclopedia (ed. Knight), D. (search)
, derived from its extreme hardness; some uses in optics, owing to its high refractive and small dispersive power. Sp. gr. 3.521. Among the celebrated diamonds may be noted the following:— Great Mogul. Found in 1550, in Golconda, and seen by Tavernier. Weighed 793 carats; cut to 279 carats (carat, 4 grains). Russian. Taken from a Brahminical idol by a French soldier; sold to the Empress Catherine for £ 90,000 and an annuity of £ 4,000. Weighs 194 carats. Pitt. Brought from India by Mr. Pitt, the grandfather of the first Earl of Chatham; sold to the Regent Duke of Orleans, in 1717, for £ 135,000. Weighed when rough, 400 carats; cut to 136 1/2 carats. Napoleon placed it in the hilt of his sword. Koh-i-noor. Seen by Tavernier in 1665, in the possession of the Great Mogul. Seized by Nadir Shah, in 1739, at the taking of Delhi. Became the property of Runjeet Sing. Captured by the English at the taking of the Punjab. Presented to the Queen by the East India Company, in 1850;
Knight's Mechanical Encyclopedia (ed. Knight), F. (search)
BellMar. 20, 1860. 27,838F. D. NewburyApr. 10, 1860. 28,331Savage and NorthMay 15, 1860. 29,213C. R. AlsopJuly 17, 1860. 29,538C. R. AlsopAug. 7, 1860. 29,864J. M. CooperSept. 4, 1860. 30,260Aug. SpellierOct. 2, 1860. 30,494F. D. NewburyOct. 23, 1860. 30,602John AdamsNov 6, 1860. 30,843E. T. StarrDec. 4, 1860. 32,333C. R. AlsopMay 14, 1861. 32,685J. A. De BrameJuly 2, 1861. 33,770C. H. AlsopNov. 26, 1861. 33,932W. H. ElliotDec. 17, 1861. 34,032Thomas ShawDec. 24, 1861. 34,093W. J. PittJan. 7, 1862. 34,226C. R. AlsopJan. 21, 1862. 34,803C. R. AlsopMar. 25, 1862. 35,052J. A. WhalenApr. 22, 1862. 35,404A. C. VaughanMay 27, 1862. 35,999G. W. B. GedneyJuly 29, 1862. 36,861H. S. RogersNov. 4, 1862. 37,004T. J. MayallNov. 25, 1862. 37,329F. BealsJan. 6, 1863. 37,921S. RemingtonMar. 17, 1863. 37,961A. HallMar. 24, 1863. 38,336James ReidApr. 28, 1863. 38,934L. W. PondJune 16, 1863. 39,409James KerrAug. 4, 1863. 39,771C. W. HarrisSept. 1, 1863. 39,825Mershon and Hol
Knight's Mechanical Encyclopedia (ed. Knight), R. (search)
ieved. Each great invention that has blessed us in modern times has been fought over. Witness steam-engines, steam navigation, photography, reaping-machines, and the electric telegraph. Most of those who worked at these problems added somewhat to the eventual success, and we may surely consider the matter with amiability and try to avoid acrimony. The first modern machine resembled the old Gallic implement, in the respect that it stripped the head from the straw. The English machine of Pitt, in 1786, had a cylinder on which were rows of combs or ripples, which tore off the ears and discharged them into the box of the machine. For about twoscore years attention was principally directed to revolving cutters or systems of revolving blades. The motion of the cutting apparatus being derived from the rotary motion of the wheels supporting the implement, it naturally occurred to connect the axle or wheel with a rotary cutter, and later with an oscillating one, which had its analogu