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 174
in miunufacture, 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, andfi<r. 5 is a corresponding plan. Theeye, a, is made exees.si\oly largo inproportion to the stones diameter, ex-ceeding, indeed,… … 1G6 THE PRACTICAL DRAUGHTSMANS Fifr. 6. between the working surfaces by the action of the centrifugalforce. Besides, the increased circumferential length of the eyeadmits of the formation of three or four times the ordinary numberof leading furrows, for the distribution of the air over the…
Mechanical drawing
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