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. (1857)
Armengaud, aîné (Jacques-Eugène), 1810-1891, Armengaud, Charles A., 1813-1893, Amouroux, Jules, Johnson, William, 1823-1864 · New York : Stringer & Townsend · leaf 176
dvantages—economy in ma-nufacture, simplicity and effective ven-tilation, increased production of meal,and a saving of labour in repairs. Fig.4 is a vertical section of the stone, andfig. 5 is a corresponding plan. The eye, a, is made excessively large inproportion to the stones diameter,… … THE PRACTICAL DRAUGHTSMANS between the working surfaces by the action of the centrifugalforce. BosiJes, the increased circumferential length of the eyeadmits of the formation of three or four times the ordinary numberof leading furrows, for tlie distribution of the air over the grindingsurfaces,…
Mechanical drawing
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