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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FREE WHEELS AND COASTER HUBS 107
methods of manufacture have now resulted in a thoroughly
reliable device.
Fig. 46 shows the roller or friction clutch (front plate
removed), a is the chain ring ; b, |-in. balls ; c, roller ;
D, springs ; e, clutch. It will be seen that the clutch is
screwed on the hub barrel, and revolves with it. When
the chain ring is pulled round in one direction, the five
Fig. 46.—Roller or Friction Free-wheel Clutch
rollers are drawn by friction against the ring up the five
inclined planes, and are jammed between the clutch and
ring, and the road wheel revolves with it. When the
chain ring is held still, as is the case when free-wheeling,
the clutch revolves with the road wheel, causing the
rollers to run back into the bottom of the inclined planes,
where thev are kept by friction against the hub ring until
pedalling starts again. The blocks f at the back of the
rollers are to keep them square, and the small spiral
springs keep the blocks up to their work.