Cycle Repairing and Adjusting
With a Chapter on building a Bicycle from a Set of Parts
År: 1916
Forlag: Cassell and Company, LTD
Sted: London, New York, Toronto and Melbourne
Sider: 152
UDK: 629.118
Emne: Reprint 1916.
With 79 Illustrations
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CYCLE REPAIRING
In the now almost universal ratchet clutch, the chain
ring has a ratchet running round its circumference. Re-
cesses are formed in the clutch, and in these are fitted
pawls, which engage with the ratchet while driving.
When free-wheeling, the pawls run over the ratchet, as
Fig. 47.—Hyde Pawl and Ratchet
Free-wheel Clutch
in an engineer’s ratchet brace. In some cases rocking
pawls are used, but in most cases the pawls are kept up
to their work by a flat or small coil spring (see Fig. 48).
The “Hyde” is one of the most popular pawl and
ratchet free-wheels, and the illustration presented by Fig.
47 will enable its construction to be understood easily.
It shows the clutch with the outer washer removed. The
Fig. 48.—Section of Sunbeam Free-wheel
Clutch
Fig. 48.