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Knight's Mechanical Encyclopedia (ed. Knight) 98 0 Browse Search
Col. O. M. Roberts, Confederate Military History, a library of Confederate States Military History: Volume 12.1, Alabama (ed. Clement Anselm Evans) 53 1 Browse Search
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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
ith a lever, which is acted upon by every polarization of a set of electro-magnets by the local current, and thereupon strikes a small bell. A pair of these bells are connected to each wire; one bell is struck by the passage of the positive, and the other of the negative current, the alphabet being readily formed by the difference in their tones and the number of beats. Another form of audible telegraph consists of a wire which is tapped and conducts the sound to a resonant diaphragm. Wilson's Patents, 1866, refer to the production of a musical note by the action of a valve governed by the electro-magnetic current. The sound is continuous or intermittent, and variable in tone or pitch, as may be required. Ac′ro-ter. A small pedestal placed on a pediment and serving to support a statue Ac-tin′o-graph. An instrument for registering the variation of the chemical intensity of the sun's rays. As contrived by Mr. Hunt, it consists of a fixed cylinder on which is placed
Knight's Mechanical Encyclopedia (ed. Knight), B. (search)
pper, 1 of tin. It is probable that some of the ancient alloys which we read of as brass were really bronze. The Phoenicians brought tin from Cornwall 1100 B. C., before the building of Solomon's Temple. See brass. Tarshish was thy merchant [Tyre]; with silver, iron, tin, and lead they traded in thy fairs. The tin of Cornwall, and also probably that from the peninsula of Malacca, was mixed with the copper of the Wady Maghara to form the Egyptian, Phoenician, and Assyrian bronzes. Dr. Wilson (Prehistoric Man) supposes that tin was first brought to the Mediterranean from Malacca, and gave a new impetus to early Eastern civilization. Britain was the next source. Chili and Mexico are more lately known as productive sources of the same useful metal. The ordinary Assyrian bronze is composed of copper 10, tin 1. Their bell-metal was, copper 86, tin 14. The ancient bronze cutting-tools contained from 4 to 15 per cent of tin, from which it is gathered that the secret of their
Knight's Mechanical Encyclopedia (ed. Knight), D. (search)
cinnati, etc., where the entrails and other offal yielding grease are thus treated on a large scale. The tanks have also been introduced into Buenos Ayres and probably into Texas, where beeves are slaughtered for their hides and tallow. The carcasses, after removing a few choice parts, are dumped into the tanks, when steam is applied, resolving them into fat, water holding soluble matters in solution, and mud, the latter containing the earthy and some other particles. Of this class is Wilson's tank for rendering lard and tallow, patented in 1844. The tank is preferably a vertical cylinder, and is calculated for high-pressure steam. It has a perforated steam-pipe below the perforated false bottom which sustains the charge, and allows the water of condensation to percolate into the lower chamber. A discharge-hole at bottom is provided for removing the residuum. A number of try-cocks at different hights afford means for determining the levels of the fat and water respectively;
Knight's Mechanical Encyclopedia (ed. Knight), I. (search)
braces, formed with dovetails and forelocks. The ribs are covered with cast-iron plates, and the railing to the sides was of iron. Dimensions of some of the principal Cast-Iron Bridges. Date.Place.River.No. of Spans.Span. Feet.Rise. Feet.Weight. Tons.Architect. 1779CoalbrookdaleSevern1100.545378 5 English tons of 2,240 pounds.Darby & Wilkinson. 1795BuildwasSevern113027173.9 English tons of 2,240 pounds.Telford. 1796SunderlandWear.124030260 English tons of 2,240 pounds.Wilson. 1818Southwark c, Fig. 2701. Thames3240 And two side arches of 210 feet span each.245,308 English tons of 2,240 pounds.Rennie. 1836 Carrousel Scine318715.5Poloncean. 1859TarasconRhone204 416.6 1854St. PetersburgNeva15013.8 New BlackfriarsThames5185 And four spans of 155, 175, 175, 155 feet; roadway and sidewalk, 75 feet wide.17 Georgetown Aqueduct Two cast-iron pipes having a water-way of 42 inches, arched in form, carrying the roadway and forming conduits for the water su
Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
d-press. Lard-press. A press in which cooked lard is pressed from the cracklings. Fig. 2811 is a domestic implement, in which the piston is pressed down upon the cracklings in the perforated cylinder, which is inclosed by an outer shell. Lard-ren′der-er. A tank-boiler or vessel in which cut lard is cooked to obtain the clear fat apart from the membrane and watery portions. Lard-tank. A vat in which fats are cooked to obtain them free from watery matters and membrane. Wilson's tank is a vertical cylinder with a charging hole at top; a steam-jacket and steam-coil for heating; try-cocks at different hights for examination of contents; discharge-cocks at different hights for drawing off the liquid oil and the water; discharge-hole, with cover at the bottom, to remove the solid matter from the bones and fibrine. In Everett's apparatus (Fig. 2812) the digester, containing the fat, is surrounded by an outer shell constituting a hot-water and steam space, to which i
Knight's Mechanical Encyclopedia (ed. Knight), M. (search)
rom the hopper b are caught by a revolving cone or disk c, provided with upwardly projecting pins, disengaging particles of dirt which adhere to the coarser particles of the meal; these are carried off by the blast, while the valuable portions slide down an incline to the sieves d, which are vibrated in the usual manner by a cam-shaft; the coarser and harder portions of the meal fall through the sieves, while foreign matters are finally shaken out at their ends and delivered into a spout. Wilson's middlings-purifier. E (Fig. 3141) uses both suction and an air-blast. In this machine a blower a and exhaust-fan b are employed; the stuff from the hopper c is fed intermittingly to the screen d by means of a cut-off plate, while the screen has a longitudinal motion, and is divided into two parts by a partition e, one part being immediately over the air-tight chamber f, while the other projects within the air-tight chamber g; the first part is provided with cloth of such fineness that
Knight's Mechanical Encyclopedia (ed. Knight), R. (search)
cted back to the mill. 6. The whole hulled grains are taken to the polishing or whitening machine, which consists of two cylinders placed concentrically. The exterior cylinder is stationary, and the revolving inner cylinder is covered with sheepskin having the wool on and placed on the outside. The action of the wool, the inner surface of the outer casing, and the attrition of the grains on each other remove the remaining portions of the cuticle and polish the grain. Rice-huller. Wilson's rice-huller (English patent, June, 1827) specifies an inclined cylinder with inwardly projecting spokes and a slow rotation and an axial shaft with radiating spokes and a rapid rotation. The arms of the shaft occupy the spaces inter- vening between those of the cylinder and conversely The rice enters at top, and is driven around in the inclined annular space, following a spiral course to its eventual discharge at the bottom. The same plan has been adopted of late years in the United S
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
p the work where Howe left it, — to Singer, A. B. Wilson, and others. Furthermore, the machine is a second loop. See 13, Plate LVII. The A. B. Wilson four-motion feed (1852) and the Wilson rota. （b.) Shuttles vibrate. No.Name.Date. 7,776WilsonNov. 12, 1850. 9,139MillerJuly 20, 1852. 11,9 15,635JohnsonAug. 26, 1856. (Reissue.)414WilsonDec. 9, 1856. 16,234GibbsDec. 16, 1856. 16,28ng Hooks. (a.) Wheeler & Wilson Pattern. 8,296WilsonAug. 12, 1851. 9,041WilsonJune 15, 1852. 10,8sue.)913WilsonFeb. 28, 1860. (Reissue.)914WilsonFeb. 28, 1860. 30,615CollinsNov. 13, 1860. 3300 Remington Empire Sewing-Machine Co.17,608 Wilson Sewing-Machine Co.17,525 Gold Medal Sewing-Mamaterial moves back to take a new stroke. See Wilson, November 12, 1850, shown at F. Four-motionloop. 19. Lock-stitch. Singer, Wheeler and Wilson, Weed, Wilson, Howe, Domestic, Florence. 20Wilson, Howe, Domestic, Florence. 20. Coil in needle-thread. 21. Double coil in needle-thread. 22. Coil in shuttle-thread. 23. [24 more...]<
Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
the ring-slide, the thread being drawn out in front. Wheeler and Wilson's Tailoring-machine. In operating, the needle descends and thru. S. Dakin585551164 ———— Total337327303967 The Irish team. Wilson585055163 Hamilton565451161 McKenna524453149 Milner553741133 Johated as to give the distance directly in yards or metres. See also Wilson's United States patent, September 29, 1868, No. 82,669. Tel′e-phe rotation of the sheave. Willcox and Gibbs automatic tension. Wilson tension. Ten′sion-bridge. A bridge constructed on the princiuids or gases which are to be maintained at a given temperature. Wilson's thermostat for steamheaters (Fig. 6374) has a compound plate madered degree of heat to operate a fire-alarm telegraph-instrument. Wilson's thermostat. In Guest's electrical thermostat (Fig. 6376), thescale for tuck-markers; patent dated August 11, 1874. Wheeler and Wilson's tuck-marker. Fig. 6763 shows a tuck-marker as adapted to
Knight's Mechanical Encyclopedia (ed. Knight), W. (search)
Lakins, August 27, 1873146.246. Little, June 24, 1873140, 147 and 159, 691. Mendell, August 3, 186993,326. Meriweather, November 8, 185310,211. Nicholson, April 25, 1871114,029. Norcross, January 10, 186545,852. Rappleye, July 4, 1871116,755 and 136,094. Reyman, September 29, 185718,301. Rose, May 13. 1873138,763. Sisson, April 25, 1871114,057. Smith, June 25, 185766.182 Speakman, January 16, 1872121,862 and 153,390. Wakefield, March 14, 1871112,658. Walker, May 29, 18539,642. Wilson el al., December 6, 1870109,858. Patterson, July 14, 186879,854. Darlington, August 11, 1874154,024. Glidden, November 24, 1874157,124. Haish, January 20, 1874146,671 and 164,552. Hall, December 1, 1874157,391. Merrill, December 29, 1874155,538 and 164,576. Withers, October 6, 1874155, 603. Ellwood, May 11, 1875163,169. McClellan, November 2, 1875169,265. Seabury, November 10, 1875170.024. Stover, June 29, 1875164,947. Wire-gage. A gage for measuring the thickness of wire a