Compressed air production; or, The theory and practice of air compression . FIG. 8.—DUBOIS & FRANCOIS, 1876. and Mr. Thomas Doane, chief engineer for tunnel construction. It is be-lieved that Mr. Doane deserves the largest share of credit for the inven-tion and development of this compressor, and it is to the credit of these. FIG. 9.—DUBOIS & FRANCOIS, 1884. early designers to note that after the completion of the Hoosac Tunnelthe compressor was transferred to the Marble Quarries, at SutherlandFalls, Vt. (now called Proctor), and that it has been used continuously up CCMPRESSED AIR PRODUCTION.
Compressed air production; or, The theory and practice of air compression . FIG. 8.—DUBOIS & FRANCOIS, 1876. and Mr. Thomas Doane, chief engineer for tunnel construction. It is be-lieved that Mr. Doane deserves the largest share of credit for the inven-tion and development of this compressor, and it is to the credit of these. FIG. 9.—DUBOIS & FRANCOIS, 1884. early designers to note that after the completion of the Hoosac Tunnelthe compressor was transferred to the Marble Quarries, at SutherlandFalls, Vt. (now called Proctor), and that it has been used continuously up CCMPRESSED AIR PRODUCTION. 25 to the present time, compressing air to about 40 pounds to the squareinch. Rock drills and channeling machines of modern construction arenow using this air for quarrying the beautiful marble of Vermont. The first channeling machine was tried in this quarry perhaps withcompressed air furnished by the Hoosac Tunnel compressor. The compressor is so simple that it may be readily understood bylooking at the plan. It consists of 4 horizontal air cylinders, the pistonsof which are propelled by a turbine wheel. The cylinders are singleacting, the air being admitted through poppet valves placed in the cylinder is 13 in. in diameter by 20 in. in stroke. It was originallyintended for a speed of 120 revoluti
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Keywords: ., bookcentury1800, bookdecade1890, bookid, booksubjectcompressedair
