A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . ely well in the manufacture of fire-bricks. The retorts show a little moreiron than is desirable, but the exhibitor has been considered worthy of honorable of less creditable appearance are exhibited by Messrs. Hickman & Co. of Stour-brido-e, and Mr. A. Potter of Newcastle. The surface of both these retorts is cracked andundulating. When we consider the high and long-continued temperature to which theseobjects are exposed, the absolute necessity
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . ely well in the manufacture of fire-bricks. The retorts show a little moreiron than is desirable, but the exhibitor has been considered worthy of honorable of less creditable appearance are exhibited by Messrs. Hickman & Co. of Stour-brido-e, and Mr. A. Potter of Newcastle. The surface of both these retorts is cracked andundulating. When we consider the high and long-continued temperature to which theseobjects are exposed, the absolute necessity of attending to every detail in mixing the clayand moulding the retort will be at once recognized, and the apparently slight defects ofsome of those sent for exhibition reciuire to be noticed as of real importance. Next to England, the finest specimens of fire-clay goods on a large scale are from Bel-gium : the gas retort sent from France is not remarkable for excellence. Fig. ISO is an elevation of Mr. Wrights plan for a range of long clay retorts. Fij. 181 shows the plans and sections of the setting for these retorts. 181. COAX-GAS. 381 Retorts, or rather ovens, of fire-brick, the invention of Mr. Spinney, have been longused successfully at Exeter, Cheltenham, and other places. They appear to be very durable,and to require little outlay for repairs, but a very large expenditure of fuel is required forheating them. They are of the D shape, 7 feet long, 3 feet 2 inches wide, and 14 incheshigii at the crown of the arch. Each retort receives a charge of 5 or 6 cwt. of Newcastleor Wesh coal every 12 hours, and produces gas at the rate of 9,000 cubic feet per ton ofWelsh, and 10,000 to 12,000 per ton of Newcastle coal. Cleggs Retoluing Web Retort.—This retort, the invention of Mr. Clegg, sen., makesthe nearest approach to a truly philosophical apparatus for the generation of gas ; in it thecoal is exposed to a sudden and uniform heat, in a thin stratum, by which means the gasesar
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
