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 104
QUESTION OF POINTS OF CON-TACT The ball may be regarded as a number Oftiny thin wheels or disks, borne on a com-mon axis. Obviously, the larger the wheel 82 the more easily it will roll; hence we reachthe first rule, namely: the ball should restand roll on its largest diameter, if pos-sible, and,… … OLD DOUBLE-ROW BALL BEARING. rings, and the weight must bear in a di-rection at right angles to the plain surfaces;the ball will then roll at its best, and yetthis construction is not practicable. Thisis so because there would be no means ofkeeping the balls in one track and becausethe surfaces and…
Bicycles
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