Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 300
Fig. thickness of the hub is about -^ the diameter of the shaft; this proportion isalso used for the hubs of couplings ; the width of the arms from f to full diam-eter ; the thickness half the Avidth ; the thickness of the rim from I- to -J- thediameter; the length of hub the same as the width of…
Mechanical drawing
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