ition, when not 1n use, the tellectual value. Dr. C. Clapham ’s arguments to this chains are drawn around the clutches by means of effect are quoted with approval in the Centralblatt with roller teeth journaled on pins, each tooth curving suitable springs, the levers being at the same time in fur… … Pedals, the clutches are thrown into engagement and the bicycle is driven forward. The length and the frequency of the stroke can be varied at will, and, as there are no dead centers, it is claiined that this wheel makes an ideal hill climber. The Dunbar bicycle brake, which is applied to the front…
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