Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 375
in-ished at pleasure, preventing any danger of injury or loss from over-burning or from under-burning. These furnaces are likely to come largely into use in manufacturingornamental terra cottas for house fronts, as in cornices, friezes and lin-tels, as well as for statues, vases, fountains, &c,… … ECONOMY OF HOFFMANS ANNULAR BRICK FURNACE. 359 the Hoffmann furnaces in England. From these it appears that thesaving is even greater than he claims. At the works of Mr. Betty, atKensington, the following represents the comparative cost to the pro-prietor of brick per thousand, by the old and new…
Machinery · Scientific apparatus and instruments
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