Compressed air production; or, The theory and practice of air compression . pray into the compressorcylinder to absorb the heat of compression. Fig. 8 illustrates the air cylinder of the Dubois-Francois type of com-pressor, which was the best in use about the year 1876. This com-pressor wras exhibited at the Centennial Exposition and was adopted byMr. Sutro in the construction of the Sutro tunnel. A characteristic feat-ure seems to be to get as much water into the cylinder as possible. Thewater which flooded the bottom of the cylinder arose from the voluminousinjection; this water was pushed i
Compressed air production; or, The theory and practice of air compression . pray into the compressorcylinder to absorb the heat of compression. Fig. 8 illustrates the air cylinder of the Dubois-Francois type of com-pressor, which was the best in use about the year 1876. This com-pressor wras exhibited at the Centennial Exposition and was adopted byMr. Sutro in the construction of the Sutro tunnel. A characteristic feat-ure seems to be to get as much water into the cylinder as possible. Thewater which flooded the bottom of the cylinder arose from the voluminousinjection; this water was pushed into the end of the cylinder and some ofit escaped with the air through the discharge valve. An improved pattern of this compressor is shown in Fig 9. The first air compressor used on a large scale for practical work inAmerica is shown in Fig. 10. H COMPRESSED AIR PRODUCTION. This machine was used at the Hoosac Tunnel, being built a littleprior to 1866. The design was made under the direction of the Massa-chusetts State Commission, of which Mr. John W. Brooks was chairman. 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
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Keywords: ., bookcentury1800, bookdecade1890, bookid, booksubjectcompressedair
