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 225
one-eighth inch to a foot in length, and the same must be given to the key-seat in the boss of thewheel, and not to the key-bed in the shaft. Fig. 2511 illustrates the method of keying a wheel to a square shaft. It is used for shafts that 214 KIBBLES. 2513. 2514. B UlJ n. \i … are not planed or otherwise made true. The wheel is hung upon the shaft, and four temporary keys,having heads as shown in Fie 2512 at /«, with which to withdraw them from the wheel, are inserted inthe spaces a, a a, a, Fig. 2511. (It may be mentioned here that similar heads are generally forged…
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