Cycling art, energy and locomotion: a series of remarks on the development of bicycles, tricycles, and man-motor carriages (1889)
Scott, Robert Pittis · Philadelphia, J. B. Lippincott · leaf 171
ies. CHAPTER XX. ANTIFRICTION BEARINGS, BALL AND ROLLER. The cycle art has developed the use of antifriction,or, we might say, rolling-friction bearings, to an extentnever before attained ; these bearings are in the formof balls and rollers; the former are made in severalstyles and the latter in at… … 1861. Ball-bearing patent. roller and ball-bearing patents on file at the UnitedStates office; this, however, does not represent theentire number issued. All of the more recent patentsare substantially modifications of former patterns, suchas No. 29,570, 1860; 37,765, 1863; 58,739, 1866;63,609,…
Cycling · Bicycles
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
