The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing (1866)
Armengaud, Charles A., 1813-1893, Armengaud, Charles, 1813-1893, [from old catalog] joint author, Amouroux, Jules, [from old catalog] joint author, Johnson, William, 1823-1864. [from old catalog] · Philadelphia, H. C. Baird · leaf 176
of the grindingaction, before the air has fully reached the acting surfaces. Theeye of the upper fixed stone, between the two feed-pipes, iscovered over with a metal disc, g, passed over the feed-spindle,and capable of adjustment at any required height above the eye BOOK OF INDUSTRIAL DESIGN. Irt7… … the feed-spindle, g, for the passage through of a portion of thenir. In this way, part of the air may be discharged at the eye ofthe upper stone, and part down through the eye of the runnerbeneath, whilst the main body of the air goes along with thegrain, and is discharged with the grained material…
Mechanical drawing
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