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 47
GROUP II. Fig. 4. Fig. 5. … The second distinctive arrangement of lever andcrank is where the lever is pivoted so as to return overthe same track in which it descends, as shown in Figs.4 and 5. The first group, with its oval motion, has adecided advantage in regard to dead centre or con-tinuous power ; since by an…
Cycling · Bicycles
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