Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 549
I.. I n Fig. 1269. ENGINEERING DRAWING. 533 tion for the hanger. Lay off the width of the alleys and of the machines. Thefirst alley, or nearest the side-wall, is a back alley; that is, where the operativedoes not stand, and so on alternate alleys. Draw the lines of shafting centralto the alleys,…
Mechanical drawing
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