The Modern bicycle and its accessories; a complete reference book for rider, dealer, and maker (1898)
Schwalbach, Alexander, Wilcox, Julius, Commercial advertiser association, New York · New York, The Commercial advertiser association · leaf 69
MAKING CRESCENT CRANK HANGER.STAGE 4. supports being about six inches above andbelow the crown, it sustained a weight of3,500 pounds without deflection. THE CRANK HANGER. The crank hanger is of the one-piececonstruction, and is made from a five-inchdisk of sheet steel, which is drawn intothe shape… … 48 MAKING CRESCENT CRANK HANGER.STAGE 5. diagonal stay, are then drawn and formedupon it, this, however, requiring a totalof twelve operations to complete it. Thepart requires annealing after every opera-tion, the process of drawing and forminghaving a tendency not only to lengthenthe fibre of the…
Bicycles
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