Improved Clutch for Cycles, Motors, Machinery and the like.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improved Clutch for Cycles, Motors, Machinery and the like.
I, CHARLES EBENEZER CHALLIS, of 13, South Hill Park Gardens, Hampstead,
London, Machinist, do hereby declare the nature of this invention to be as
follows:-
My improved clutch consists of a cam, eccentric, projection or equivalent
which operates a clutch piece and causes it to engage with the wheel (or
equivalent) which is required to be driven.
As applied to the back wheel of an ordinary safety bicycle, the hub of the
wheel has a flange, with an outstanding ring upon its face, near its periphery
(or an annular recess in its face) and the barrel of the hub is prolonged beyond
the flange so as to form a bearing on which the sprocket wheel (or equivalent)
may run, this sprocket wheel has a projecting collar on its inner face that is
slightly eccentric with the hole through the centre of the wheel, and on this
eccentric is a clutch piece which bears against the annular ring on hub and
jams when the eccentric is partially rotated forward, a spring attached to the
sprocket wheel keeps the clutch piece always in actual contact with the annular
ring.
Thus the cycle wheel is free to revolve forward while its sprocket wheel,
chain and other driving mechanism remain stationary, but when the sprocket
wheel is caused to rotate forward the eccentric on it jams the clutch piece
against the annular ring and drives it.
The details of construction may be varied to suit special requirements with-
out departing from the principle of my invention for instance: the eccentric
(or equivalent) may be upon the hub and the annular recess or ring be in the
sprocket wheel, or the clutch piece may act upon the outside of the annular
ring instead of on the inside, or it may engage both outside and inside the ring,
or the clutch piece may be divided and the sections be forced upon the ring
by means of a cam eccentric, or equivalent; or instead of the device being
applied to the back wheel of the cycle it may be fitted to the driving sprocket
on the crank axle.
In the case of motors the device may be fitted on a shaft in practically the
same manner as to a cycle..
And for machinery where a pully is required to be stopped while the shaft
continues running (or vice versa) or where a variable feed or traverse is required
the device is constructed substantially in the same manner.
Dated the 20th day of October 1899.

page_text: Improved Clutch for Cycles, Motors, Machinery and the like.
I, CHARLES EBENEZER CHALLIS, of 13, South Hill Park Gardens, Hampstead,
London, N.W., Machinist, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My improved clutch consists of a cam, eccentric, projection or equivalent
which operates a clutch piece and causes it to engage with the wheel (or
equivalent) which is required to be driven.
As applied to the back wheel of an ordinary safety bicycle, the hub of the
wheel has a flange, with an outstanding ring upon its face, near its periphery
(or an annular recess in its face) and the barrel of the hub is prolonged beyond
the flange so as to form a bearing on which the sprocket wheel (or equivalent)
may run, this sprocket wheel has a projecting collar on its inner face that is
slightly eccentric with the hole through the centre of the wheel, and on this
eccentric is a clutch piece which bears against the annular ring on hub and
jams when the eccentric is partially rotated forward, a spring attached to the
sprocket wheel keeps the clutch piece always in actual contact with the annular
ring.
Thus the cycle wheel is free to revolve forward while its sprocket wheel,
chain and other driving mechanism remain stationary, but when the sprocket
wheel is caused to rotate forward the eccentric on it jams the clutch piece
against the annular ring and drives it.
The details of construction may be varied to suit special requirements with-
out departing from the principle of my invention for instance; the eccentric
(or equivalent) may be upon the hub and the annular recess or ring be in the
sprocket wheel, or the clutch piece may act upon the outside of the annular
ring instead of on the inside, or it may engage both outside and inside the ring,
or the clutch piece may be divided and the sections be forced upon the ring
by means of a cam, eccentric or equivalent; or instead of the device being
applied to the back wheel of the cycle it may be fitted to the driving sprocket
on the crank axle.
In the case of motors the device may be fitted on a shaft in practically the
same manner as to a cycle.
And for machinery where a pully is required to be stopped while the shaft
continues running (or vice versa) or where a variable feed or traverse is required
the device is constructed substantially in the same manner.
In the accompanying drawings.
Fig. 1.
A represents part of the hub or a collar attached to the hub with an
outstanding ring upon its face B and a prolongation of the barrel marked C,
on which the recessed sprocket wheel D runs, the outside of the interior collar
on sprocket wheel marked E is eccentric with the wheel and the clutch piece
marked F is hung upon it so that when the sprocket wheel is driven the eccen-
tric jams the clutch piece against the projecting flange on the face of the hub
and so drives it.
H is a
Fig. 2. C is the barrel of hub, F is the clutch piece, 1 is the sprocket wheel
spring to keep the clutch piece in contact with the ring on hub.
Fig. 3. Shows the device with cam and divided clutch piece, EE shows the
cam F F the clutch pieces H H the springs and D) the sprocket wheel.
Fig. 4. Shows section of Fig. 3. D is the sprocket wheel. C is the collar

page_text: with the cam or eccentric thereon E E. F F the clutch pieces. J J are side
plates enclosing the device.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is: -
A clutch device for cycles, motors, machinery and the like, consisting of a
cam, eccentric or projection which operates a clutch piece (or pieces) and causes
it to engage with a surrounding ring the whole being constructed substantially,
as set forth and described.