Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 252
6000 -f- 60 = 100; and the wheels will require to have respectively 60 and 100 teeth. If there are no wheels on the lathe, we proceed as follows : Divide the pitch required by the pitch of the feed-screw ; the quotient is the proportion betweenthe revolutions of the first driving-gear and the… … now find two numbers which, multiplied together, make 5, as 2^ x 2 = 5; hence one pair of wheelsmust be geared 2\ to 1 and the other pair 2 to 1, the small wheel of each pair being used as drivers,because the thread required is finer than the feed-screw. 240 LATHE, METAL-WORKING. 2.>s 2589.
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