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Harper's Encyclopedia of United States History (ed. Benson Lossing) 356 34 Browse Search
George P. Rowell and Company's American Newspaper Directory, containing accurate lists of all the newspapers and periodicals published in the United States and territories, and the dominion of Canada, and British Colonies of North America., together with a description of the towns and cities in which they are published. (ed. George P. Rowell and company) 236 0 Browse Search
William Tecumseh Sherman, Memoirs of General William T. Sherman . 188 0 Browse Search
William Hepworth Dixon, White Conquest: Volume 2 126 0 Browse Search
Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories 101 11 Browse Search
William Hepworth Dixon, White Conquest: Volume 1 76 0 Browse Search
Cambridge History of American Literature: volume 3 (ed. Trent, William Peterfield, 1862-1939., Erskine, John, 1879-1951., Sherman, Stuart Pratt, 1881-1926., Van Doren, Carl, 1885-1950.) 46 0 Browse Search
Colonel William Preston Johnston, The Life of General Albert Sidney Johnston : His Service in the Armies of the United States, the Republic of Texas, and the Confederate States. 44 0 Browse Search
Oliver Otis Howard, Autobiography of Oliver Otis Howard, major general , United States army : volume 2 26 0 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 25 1 Browse Search
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Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for San Francisco (California, United States) or search for San Francisco (California, United States) in all documents.

Your search returned 13 results in 6 document sections:

1/20 12.6719 8.0521.263 60 15.08011 4.9601.061 The following table shows the quantity of powder required to lift from its bed rock of usual weight (about 1 3/4 tons to the perch) and ordinary consistence. Line of least resistance.Charges of powder.Line of least resistance.Charges of powder. Feet.lb. oz.Feet.lb. oz. 1.0 1/242 0 1.6 1 3/44.62 13 1/2 2.0 453 14 1/3 2.6 7 3/466 12 3.0 13 1/2710 11 1/2 3.61 5 1/2816 0 The obstruction known as Blossom Rock in the harbor of San Francisco was removed by constructing a coffer-dam around a portion of the rock, a porous sandstone, and excavating its interior, leaving a shell about 6 feet thick, supported by props, to resist the pressure of the water. The space excavated measured 140 by 50 feet, and varied in depth from 4 to 29 feet. 23 tons of powder were used, part of which was inclosed in water-proof casks, and the remainder in iron tanks. These were connected by insulated wires with an electric battery. When all was re
the hypo-nitrous acid and to cool and agitate the mixture. The vessels are lined with glass. This substance has been extensively used for blasting purposes; in the Mt. Cenis and Hoosac tunnels, the operations at Blossom Rock, harbor of San Francisco, in the improvements of the East River, New York, and elsewhere. (See blasting; tunnel.) Developing about ten times the explosive power of gunpowder, it requires far less drilling and operates so as to lift the rock from its bed without shatreat heat in transportation, or carelessness in handling. Mowbray's nitro-glycerine Apparalus. Among the most prominent accidents occurring from these sources were the explosions at Aspinwall and in the office of Wells, Fargo, & Co. at San Francisco, by the former of which forty-five and by the latter six lives were destroyed. In the case of the Aspinwall disaster the nitroleum had been shipped from Hamburg, where the temperature was 55° or 60° to a tropical climate where the temperatur
6.51 Fort Laramic, Wyoming15.16 Fort Massachusetts, Col.17.06 Fort Garland, Col6.11 Fort Craig, New Mexico11.67 Fort Marcy, New Mexico16.65 Fort Defiance, Arizona14.21 Salt Lake, Utah23.85 Fort Bridger, Utah6.12 Sacramento, Cal19.56 San Francisco, Cal21.69 San Diego, Cal9.16 Meadow Valley, Cal57.03 Dalles, Oregon21.74 Fort Hoskins, Oregon66.71 Fort Vancouver, Washington Territory38.84 Fort Colville, Wash. Ter.9.83 Neah Bay, Wash. Ter123.35 Sitka, Alaska83.39 Vera Cruz, Mexico to ring a bell when the hole is bored to the required depth, and also when the drill is removed from the hole. When the proper number are drilled, a diver descends and charges them with nitro-glycerine cartridges. Colonel Von Schmidt, of San Francisco, has proposed to employ for tunneling the Sierra Nevada, in order to supply water to the auriferous gravel-beds of Placer County, an annular diamond-drill, eight feet in diameter, consisting of a large wheel, on whose edge the diamonds are se
evada. 2. (Vehicle.) One of the bars between a pair of which a horse is hitched to a vehicle. A thill. Paddle-shafts for Pacific steamers (on route for San Francisco by Union Pacific Railway). The Egyptian chariots were always drawn by a pair of horses yoked to the end of a pole or tongue. The Lydians, it is said, attats for the steamers Japan and China, weighing respectively 78,520 and 68,400 pounds, were transported from Bridgewater, Mass., where they were manufactured, to San Francisco, by rail. Two trucks were required for each. Their arrangement is shown in Fig. 4894. A counter-shaft is one between the main shafting and the machine. a place called Inferno. The mountain is said to be a mass of sulphur, yielding from 92 to 96 per cent of the pure article, and is being shipped to Carson and San Francisco at the rate of 10 to 20 tons a week. California procures some sulphur from Japan as well as from Sicily; but this Nevada product is said to excel either. S
ly practiced as far back as 1848. Cambridge Observatory, Mass., has thus been brought into direct communication with San Francisco by connecting the wire with the pendulum of a clock at Cambridge, so that the main circuit is broken and instantly closed at each oscillation; the moment at which the circuit is broken is noted by the observer at San Francisco, by a clock regulated to local time there, which, being compared with the local time at Cambridge, gives the difference of longitude betweendings for the Pacific cable. When this line of telegraph is laid, its length between the terminal points, namely, San Francisco and Yokohama, will be 5,573 nautical miles. The cable will, however, be divided into three sections, — from San FranSan Francisco to Honolulu, 2,093 miles; from Honolulu to Midway Island, 1,220; and from Midway Island to Yokohama, 2,260 miles. a, Fig. 6243, is the Ohio River cable. It is composed of an interior wire of No. 10 Swedish iron, surrounded by three coats o
172 3/88.805 1/2 83 1/816.007182 1/87.605 92 3/411.406191 7/85.804 3/4 102 1/48.645201 5/84.094 10 1/425.134 1/2211 3/82.833 1/4 10 1/21 5/84.274221 1/42.132 3/4 10 3/41 1/23.483 3/4231 1/81.382 1/4 2411.382 1/4 257/81.032 263/40.811 3/4 275/80.561 1/2 27 1/21/2...... 28..large sash-cord. 29..small sash-cord. Wire-rope Railway. Wire-rope Rail′--way. Fig. 7292 illustrates Halladie's wirerope traction-railway system used by the Clay Street Hill Railway Company of San Francisco, Cal., on grades as steep as 850 feet. Sheaves for wire-rope Railway. Gripping-attachment for wire-rope Railway. The cars are drawn by an endless wire-rope placed in a tube below the surface of the ground, between the tracks, and kept in position by means of sheaves. A stationary engine is used as the motor, and acts on the rope by means of grip-pulleys. The rope is connected with the cars by a gripping attachment passing through a narrow slot in the upper side of the tube. The r