. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. s of the furnaces now used for melting steel in crucibles, andrepresent the ordinary pot-holes used at Sheffield, in which coke is the fuel. Each hole or furnaceis a simple rectangular chamber, communicating near the top with a large main flue, which iscommon to a row of furnaces. The tops of the furnaces are on a level with the floor of themelting shop, and the grates are accessible from the cave below. Each furnace is covered by a square FOUNDING. 665 fire-tile, or qnarry, fixed in a wrought-iron frame,
. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. s of the furnaces now used for melting steel in crucibles, andrepresent the ordinary pot-holes used at Sheffield, in which coke is the fuel. Each hole or furnaceis a simple rectangular chamber, communicating near the top with a large main flue, which iscommon to a row of furnaces. The tops of the furnaces are on a level with the floor of themelting shop, and the grates are accessible from the cave below. Each furnace is covered by a square FOUNDING. 665 fire-tile, or qnarry, fixed in a wrought-iron frame, from which a handle projects in front. The fur-naces are lined with ground ganister, a variety of millstone grit that is found near Sheffield, and isof great value as a fire-resisting material. When the furnace is to be relined, a wooden mould isput into it, and the ground material rammed round. The pots almost invariably used are of fireclay, mixed with a little coke-dust, and sometimesalso with a httle burnt clay, old ground pots, to make the mass more porous, and thus diminish the. 1358. c
Size: 1748px × 1430px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
