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Horace Greeley, The American Conflict: A History of the Great Rebellion in the United States of America, 1860-65: its Causes, Incidents, and Results: Intended to exhibit especially its moral and political phases with the drift and progress of American opinion respecting human slavery from 1776 to the close of the War for the Union. Volume I. 6 0 Browse Search
Lucius R. Paige, History of Cambridge, Massachusetts, 1630-1877, with a genealogical register 4 0 Browse Search
Baron de Jomini, Summary of the Art of War, or a New Analytical Compend of the Principle Combinations of Strategy, of Grand Tactics and of Military Policy. (ed. Major O. F. Winship , Assistant Adjutant General , U. S. A., Lieut. E. E. McLean , 1st Infantry, U. S. A.) 4 0 Browse Search
The writings of John Greenleaf Whittier, Volume 5. (ed. John Greenleaf Whittier) 4 4 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 4 0 Browse Search
Caroline E. Whitcomb, History of the Second Massachusetts Battery of Light Artillery (Nims' Battery): 1861-1865, compiled from records of the Rebellion, official reports, diaries and rosters 2 0 Browse Search
The Daily Dispatch: January 15, 1863., [Electronic resource] 2 0 Browse Search
Southern Historical Society Papers, Volume 6. (ed. Reverend J. William Jones) 2 0 Browse Search
Rebellion Record: a Diary of American Events: Poetry and Incidents., Volume 6. (ed. Frank Moore) 2 2 Browse Search
Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 3. (ed. Frank Moore) 2 2 Browse Search
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Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Godfrey or search for Godfrey in all documents.

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Knight's Mechanical Encyclopedia (ed. Knight), Q. (search)
se at sea. Previous to this the astrolabe and mariner's cross had been universally employed by seamen for determining the latitude; the longitude was derived from dead reckoning or guess-work. The telescope was adapted to the astronomical telescope by Picard. All these old forms were superseded for nautical purposes by the reflecting quadrant, invented by Sir Isaac Newton, 1670. He communicated the invention to Dr. Halley, who failed to give it publicity, and it was reinvented by Godfrey of Philadelphia, and also by Hadley in England. An instrument constructed on Hadley's plan was submitted to the Royal Society in 1742, and from having been first made known by Hadley, the reflecting quadrant has been generally called Hadley's. This and all similar reflecting instruments are based on the fact that the angle between the first and last directions of a ray which has undergone two reflections in the same plane is equal to twice the inclination of the reflecting surfaces to e
Knight's Mechanical Encyclopedia (ed. Knight), W. (search)
were erected in Nuremberg, 1563. The first wire-mill in England was erected at Mortlake, in 1663. a (Fig. 7262) shows forms of round, oval, half-round, square, and triangular wires. Wires for mechanical uses and for music-printing. b, pinion-wires for watch-makers. c c′, draw-plate and music wire. d, music, as printed with wire type. e e′, fancy wires made for calico-printing rollers; example of the effect of association of the various patterns. f g h (Fig. 7263), Godfrey's wire shoe-peg. Wires for shoe-fastenings, etc. i, Wickersham's short-twist round-thread wire. j, Blake and Libby's lenticular wire-nail. k l, Smith's polygonal metallic peg. m n, Townsend's polygonal wire, before and after twisting. o p, Townsend's wire; thread raised by pressure. q, Dudley's angular wire, with grooved faces. r, mode of making Dudley's wire. s, Proctor's wire, with serrated edges for burring and feed cylinders. t, Beatty's flat perforated wi