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Document Max. Freq Min. Freq
Knight's Mechanical Encyclopedia (ed. Knight) 17 9 Browse Search
George Ticknor, Life, letters and journals of George Ticknor (ed. George Hillard) 8 0 Browse Search
The Daily Dispatch: April 5, 1864., [Electronic resource] 8 0 Browse Search
Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864 (ed. Frank Moore) 6 4 Browse Search
Harper's Encyclopedia of United States History (ed. Benson Lossing) 5 3 Browse Search
Edward L. Pierce, Memoir and letters of Charles Sumner: volume 2 4 0 Browse Search
The writings of John Greenleaf Whittier, Volume 4. (ed. John Greenleaf Whittier) 2 0 Browse Search
Francis Jackson Garrison, William Lloyd Garrison, 1805-1879; the story of his life told by his children: volume 4 2 0 Browse Search
Edward L. Pierce, Memoir and letters of Charles Sumner: volume 1 2 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.) 2 0 Browse Search
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Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Sheffield (United Kingdom) or search for Sheffield (United Kingdom) in all documents.

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ed pig, Holding within a sharp and biting gravy. Cast-steel. Blister steel which has been broken up, fused in a crucible, cast into ingots, and rolled. The blocks of steel are melted in crucibles of refractory clay, and the molten metal is poured into ingot-molds of cast-iron. These are opened, to let out the red-hot ingot, which is then passed to the rolls. See crucible; ingot-mold. The process of making cast-steel was invented by Benjamin Huntsman, of Attercliff, near Sheffield, England, in 1770. Cast-steel furnace. Cast-steel Fur′nace. The furnace has a strong wind-draft, and is lined with a very refractory composition. Each furnace is adapted to contain two crucibles, each of which is about 2 feet high, and holds a charge of 30 pounds of blister-steel. The crucibles stand on short cylinders of clay, and have a lid of the same material, which is luted to the top of the crucible, a little glass being sprinkled on the joint for that purpose. The fuel is cok
white material. See ivory, artificial. I′vo-ry. Specifically, the material constituting the tusk of the elephant. In a more general sense the term includes the tusks of the walrus, narwhal, and even the teeth of some other cetacea. The African ivory is preferred to the Asiatic; it has a greater proportion of animal matter, and is less liable to discoloration. Animal matter.Earthy matter. African ivory5150 Asiatic ivory3850 The consumption of elephants' tusks in Sheffield, England, is about 45,000 per annum; and, allowing for the occasional finding of shed tusks, and those of elephants found dead, it is estimated that 20,000 are slaughtered yearly to supply this city of cutlers. Ivory is rendered flexible by steeping in a solution of hydrochloric acid. This extracts the phosphate of lime and gives flexibility to the ivory, without impairing its form. Tubes and probes of this material have been made, and the partial hardness which occurs on drying may be rem
ss. Mag-net′ic guard. A respirator with a gauze of magnetic iron to arrest particles of steel dust when dry-grinding cutlery. Invented by Abraham of Sheffield, England. Mag-net′ic Nee′dle. A slender, poised bar or plate of magnetized steel. The forms of magnetic needles are varied, according to fancy. Some have t the metal is melted. It is run into slabs, and the metal obtained is white, hard, compact, and brittle. The puddling-furnace was invented by H. Cort of Sheffield, England, his patent being dated in 1784. See puddling-furnace. One process of converting pig into malleable iron, as practiced in England, is as follows: — at Pall Mall, London, and specimens of ears of wheat, flashy flowers, such as coxcombs, and other beautiful objects, have been exhibited. Branson, of Sheffield, England, has pursued a somewhat analogous method in obtaining castings from ferns, algae, etc. A slab of gutta-percha is softened by boiling water, laid on a smoot
laid down flat cast-iron rails. In 1776 cast-iron rails, with an upright flange, were laid on wooden sleepers and used at the Duke of Norfolk's colliery, near Sheffield. (Carr's patent, b.) They were spiked down. The flange was put on the rail before it was put on the wheel. In 1789 Loughborough's cast-iron edge-rail, with it into bar, or to flatten it out into a sheet. See rolling-mill. The largest known to the writer is a pair of iron rolls for Sir John Brown's works at Sheffield, England. These rolls are 15 feet 6 inches in extreme length, and 3 feet in diameter, and each weighs 18 tons. They are used for rolling armor-plates. 2. (Englly rolled from 20 to 30 feet in length, from 3 to 6 feet in breadth, and from 8 to 13 inches in thickness. An armor-plate was rolled at the Atlas works, Sheffield, England, in 1862, 20 × 4 feet, and a thickness of 15 inches. The operation was thus described by a spectator:— The plate, when laid in the furnace, rests upon li
pared to secure uniformity, and reduced to the proper thickness by rolling. Formerly, the larger portion came from Sheffield, England, but Philadelphia, Pittsburg, Cincinnati, and other places make them of the best quality, and from American steel oible metal suitable for steel castings. e. Cast-steel. Cast-steel was invented in 1740 by Benjamin Huntsman, near Sheffield. His process was to place small fragments of blistered steel in a crucible of fine clay, place some broken green glassgland that Swedish iron derived its valuable steel-producing qualities from the presence of manganese. Heath, of Sheffield, England, in 1839, devised a mode of combining carbon with manganese to produce a carburet, which converted English iron intnt his improvement which consisted in putting into the furnace the elements of his carburet (carbon and manganese). The Sheffield manufacturers defied him, and, after years of litigation, he died, broken-hearted, in 1850. Macintosh, Scotland, pat
likely that they would be disused until superseded by railways. They are described by Roger North in 1676 as being rails of wood grooved to form tracks for the wheels which traversed therein. An iron tram-road was laid between Wandsworth and Croydon, in England, in 1802. A flagstone tram-road was laid in the Commercial Road. London, before 1829. On it the merchandise of the East and West India Docks was transported to the city of London. Iron railways were laid down by Carr at Sheffield, 1776, and by the Coalbrookdale Iron Company in 1786. See Railway. Matthews's stone tram-way (English) has stones 4 feet 2 inches in length, 14 inches wide at base, If inches at top, and 10 inches deep. He proposed several mortise and tenon joints, shown in the illustration, to give mutual vertical and lateral support. Tram-staff. (Milling.) A miller's straight-edge, which is employed to test the squareness of the spindle with the face of the stone. The gage-staff B is