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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
rising to allow it to pass to the upward discharge-pipe e. The seed-bag d acts as a packing between the exterior pipe and the wall of the well, and prevents access of water from fissures to the water, oil, or brine at the bottom of the well. Woodward's air-pump. Woodward, May 30, 1865. The piston reciprocates in the aircylinder, and by adjustment of the valves b b, is the means of exhausting from the chamber A or of forcing air into the said chamber. As the air is withdrawn, the chambeWoodward, May 30, 1865. The piston reciprocates in the aircylinder, and by adjustment of the valves b b, is the means of exhausting from the chamber A or of forcing air into the said chamber. As the air is withdrawn, the chamber is filled by the induction-pipe, the valve a opening for that purpose. When the air is compressed into the chamber, the water is ejected by the pipe B. The action is not pulsative, as in the preceding case, but is alternate by the operation of the same cylinder and piston, and is effected by changing the position of the cocks b b. A Hydraulic Engine, so called, patented in England by Seidler some forty years since, may be classed among the alternate-acting water-elevators operated by comp
Knight's Mechanical Encyclopedia (ed. Knight), M. (search)
n inch, or the 1/129654 of a square inch, and at the rate of 29,431,458 letters to an inch, which is more than 8 Bibles, the Bible containing 3,566,480 letters. The area within which the Prayer was written was micrometrically verified by Dr. J. J. Woodward, United States Army, who found that it and the above inscription were contained within a space 1/75 of an inch square. Mr. Webb claims that writing of this kind affords a test of microscopic power superior to that afforded by Nobert's plates (which see), the finest of which he endeavors to prove have no real existence, but result from an optical delusion produced by the polarization of light. Dr. Woodward, however, says that the optical appearance of such of Nobert's bands as have never been resolved into separate lines by the highest powers yet attained are so similar to the others that it is unreasonable to doubt that they are ruled as stated by Nobert. He attributes the success of Nobert to the minuteness of the points emp
Knight's Mechanical Encyclopedia (ed. Knight), N. (search)
ch has since been shown to rest upon a misinterpretation of the physical law invoked. In 1869, however, the lines of the sixteenth, seventeenth, eighteenth, and nineteenth bands were not only seen and counted, but they were photographed by Dr. J. J. Woodward and one of his assistants in the Army Medical Museum at Washington, and the feasibility of resolving them was thus placed beyond doubt. Prior to this, various microscopists had believed that they had resolved these bands, but as they had n 1852. The treatises of Carpenter and Harting on the Microscope, and a number of papers published in the Quarterly journal of Microscopical science, and the Monthly Microscopical journal, since 1838. Kindly furnished for this work by Colonel J. J. Woodward, M. D., United States Army. Nock. （Nautical.) The upper front corner of a 4-cornered, fore-and-aft sail; such as a spanker, a trysail. Also called the throat. Noc′to-graph. a. A writing-frame for the blind. b. A nightly a
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
chief experimenters have been Professor O. N. Rood of Columbia College, Mr. Lewis N. Rutherford of New York, and Colonel J. J. Woodward of the United States Army Medical Museum. The latter has devoted much attention to the subject, and has succeedetinic rays and bring them accurately to a focus. He suggested the application of this principle to the microscope. Colonel Woodward, taking the subject up at this point, perseveringly experimented, bringing the process to the high state of practicahe large lens and the condenser, and a hood is drawn around the instrument to prevent leakage of light into the room. Woodward's Microphotographic apparatus (with solar light). For objects magnified less than 500 diameters, the time of exposur electric light. The same focusing apparatus d is employed, and the ammoniosulphate cell is invariably inserted. See Dr. Woodward's articles, American journal of science and Arts, Vol. XLII. (Second Series), pp. 189 – 195. Also Reports to the sur
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
July 12, 1859. 25,231HinkleyAug. 23, 1859. 25,331HardieSept. 6, 1859. 25,782WoodwardOct. 11, 1859. 25,885CrosbyOct. 25, 1859. 28,920ToggenbergerJan. 26, 1860. 2 30, 1869. 109,427LandfearNov. 22, 1870. 109,655PalmerNov. 29, 1870. 110,945WoodwardJan. 10, 1871. (Reissue.)4,500WoodwardJan. 10, 1871. 111,752KimballFeb. 1WoodwardJan. 10, 1871. 111,752KimballFeb. 14, 1871. 115,925BakerJune 13, 1871. 116,893Turner et al.July 11, 1871. (Reissue.)4,500WoodwardAug. 1, 1871. (Reissue.)4,785WickershamMar. 5, 1872. (RWoodwardAug. 1, 1871. (Reissue.)4,785WickershamMar. 5, 1872. (Reissue.)4,786WickershamMar. 5, 1872. 125,374BakerApr. 9, 1872. 128,172RichardsonJune 18, 1872. 128,313JordanJune 25, 1872. 128,919SpringerJuly 9, 1872. 1. Machept. 26, 1871. 120,614BarthNov. 7, 1871. 129,487MillerJuly 16, 1872. 130,264WoodwardAug. 6, 1872. 130,324SmythAug. 6, 1872. 146,483ScribnerJan. 13, 1874. 147,15ften divided by fissures, but may be cut and dressed into smaller blocks. Mr. Woodward, of Darlington, England, has patented a method of manufacturing bricks from