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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
of trees the wondrous Gothic nave. The possession of iron and various facilities of work have yet inspired no one. Some are anxious to build iron houses as much like stone as possible; the most ambitious attempt is an immense barn at Sydenham, England, — an engineering success, but not a work of inspiration. The Egyptian capitals were the prototypes of those of the Grecian and Roman orders; and the various ceramic works of the Greeks and Etruscans were strangely like those of the Nileecond. A late act of Congress (1872) appropriates $15,000 for a pneumatic dispatch-tube between the Capitol and the Government Printing-Office, Washington. The pneumatic dispatch-scheme has been put in operation at the Crystal Palace, Sydenham, England, to convey regular passengers. The tube extends from the Sydenham entrance to the armory near Penge Gate, a distance of about a quarter of a mile; and it is, in fact, a simple brick tunnel, nine feet high and eight feet wide, — a size th
Knight's Mechanical Encyclopedia (ed. Knight), F. (search)
rations of fire-proof structures, unless the amount of combustibles contained should be such that their conflagration will melt or crumble the material of which the building is constructed. Such was the case with a part of the Crystal Palace at Sydenham, the internal fittings of that portion, the louver boarding, and the furniture making a bonfire which melted the skeleton frame. Iron buildings in serious external fire exposure, or with combustible contents, are far from deserving the name of Versailles, made for Louis XIV., and the Jet d'eau of St. Cloud, are much admired. The fountains of Chatsworth, in Derbyshire, England, the residence of the Duke of Devonshire, are particularly grand; as are also those of the Crystal Palace at Sydenham, near London. Cincinnati is also proud of a fountain made in Germany, and of a very Teutonic aspect. 2. The beer fountain, as it is called, used for drawing liquors in a tavern bar from barrels in the cellar, by means of a force-pump, is the
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
a tank, water is made to circulate through the jackets by the action of the pump n, whose piston-rod is also connected with the driving-shaft. See also pages 28-30, Vol. I. Pneu-mat′ic Rail′way. A railroad whose rolling stock is driven by the compression or exhaustion of air in a tube laid parallel to the track. The plan has a number of variations, which are considered under atmospheric Railway. Medhurst's plan (1810-12), and the one adopted in the Crystal Palace Railway, Sydenham, England, was to run the car on rails laid in the tube, a fringe on the carriage acting as a packing to keep the air from passing the carriage, which thus forms a piston in the tube. The plan adopted by Pinkus Clegg, and others, was to have a traveling piston connected by a colter with the carriage, the colter displacing a continuous valve which occupied a slot in the whole length of the pipe's upper surface. Pilbrow's plan was a traveling piston having a rack on its side operating in s
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
masts of vessels. See sheers. Sheer′ing. Deviating to either side of the line of the course. Sheer-leg. Sheer-lash′ing. （Nautical.) The mode of lashing together the legs of the sheer at the cross. The middle of the rope is passed around the cross, the ends passed up and down respectively, then returned on their own parts and lashed together. Sheer-leg. （Hoisting.) Sheer-legs were employed in lieu of scaffolding in the erection of the Crystal Palace building at Sydenham, 1851. Two poles were placed upright and connected at top by a cross piece; the whole being steadied by guys. The columns were hoisted into a vertical position by a rope and pulley, and held until they were bolted to their bases. When two columns had been fixed in position, a connecting piece was attached to each end of the girder, which was raised by the same means and bolted on to the tops of the columns. Sheer-line. 1. (Shipbuilding.) The line of the deck at the side of the sh