Improvements in the Construction of Friction Clutches suitable for the Axles of Cycles, Motors, and Shafts.
Year: 1896

page_text: Date of Application, 18th Dec., 1896
Complete Specification Left, 27th May, 1897-Accepted, 10th July, 1897
OVISIONAL SPECIFICA
Improvements in the Construction of Friction Clutches suitable for the
Axles of Cycles, Motors, and Shafts.
I, JOHN WALKER, of 9 Tempest Road, Beeston Hill, Leeds, in the County of
York, Engineer, do hereby declare the nature of this invention to be as follows:-
The object of this invention is, by the arrangement and combination of certain
mechanism with the axles of cycles, motors, shafts and the like, to make more acute
the gripping power of a clutch similar to that described in my Patent Specification
No. 12493 of 1896 and to enable the grip of the clutch to be readily withdrawn out
of action when desired.
I accomplish my object in the following manner. Within a suitable collar or
casing secured to a shaft or axle of a machine, I place an expansion ring, which
by preference is grooved on the inner circumference to receive the balls of the
clutch. On the driving shaft or axle is secured a disc, in which suitable slides are
arranged to receive expansion blocks upon which the before mentioned balls rest.
The expansion blocks are connected by links to a sliding sleeve mounted on the
boss of the dise, and the balls of the clutch are brought into action by moving the
sliding sleeve towards the collar or casing of the clutch, by which operation,
the links raise the expansion blocks and bring the balls into contact with the
Expansion ring, the amount of grip being regulated by an incline on the surface
of each expansion block, the latter being held in position by the links; but in
order to further ensure the action of the clutch, the expansion blocks are
locked in position by inclined wedges formed on the sliding sleeve.
On moving the sliding sleeve in the opposite direction, the expansion blocks and
ciutch balls are readily moved clear of the expansion ring.
Dated this 17th day of December 1896
JOHN WAUGH,
Agent.
Improvements in the Construction of Friction Clutches suitable for the
Axles of Cycles, Motors, and Shafts.
I, JOHN WALKER of 9 Tempest Road, Beeston Hill, Leeds, in the County of
York, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
ir and by the following statement:-
The object of this invention is, by the arrangement and combination of certain
nechanism with the axles of cycles, motors, shafts and the like, to make more acute
the gripping power of a clutch somewhat similar to that described in my Patent

page_text: Specification No. 12493 of 1896, and to enable the grip of the clutch to be readily
withdrawn out of action when desired.
In describing my invention in detail reference is made to the accompanying
drawings in which...
L
Fig. 1 represents an elevation of my improved clutch with the cover plate
removed to more clearly show the interior, and
Fig. 2 a side view of the same partly in section with the several parts in position
when the two portions of the box are in gear.
Within a suitable casing A of the clutch which may be secured to a shaft B
or to the axle of a machine in any convenient manner, I place an expansion
ring C which may be corrugated or notched on the inner circumference of the said
ring for the reception of rollers or perforated as at 1) to receive the balls E of the
clitch. On what may be termed the driving shaft F is secured a disc or the like
having arms H in which are formed suitable slotted slides for the reception of the
expansion blocks J upon which the before mentioned rollers' or balls rest, or the
arms H may be arranged without having a connecting disc flange between them.
The expansion blocks J are connected by links K to a sliding sleeve L mounted
on the boss G and the rollers or balls E of the clutch are brought into action or
tight contact with the expansion ring C by moving the sliding-sleeve L towards
the casing A of the clutch, by which operation, the links K move the expansion
blocks outwards, that is from the centre of shaft F thereby bringing the rollers
or balls E into contact with the corrugations, notches or perforations in the
expansion ring C, the amount of grip being regulated by an incline J on the outer
surface of each expansion block J.
Instead of making the links K in the manner shown, they may be made adjust-
able as to length by means of a screw and nut in any well known manner, and as
a further security for holding the rollers or balls E in contact with and expanding
the ring C, the end of the sliding sleeve at L' is formed wedge shape. or somewhat
curved in a manner so that the part L on passing underneath the expansion
blocks as shown, the blocks are lifted or wedged up, thereby retaining the
blocks J in position independent of the connecting link K.
It will be obvious that on moving the sliding sleeve L in the opposite direction,
the expansion blocks J and clutch rollers or balls E will recede from and liberate
the expansion ring C, the springs S pressing against the respective rollers or
bolls E assist the latter to descend the inclines J on the outer ends of the blocks,
when the sliding sleeve L is withdrawn.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is:-
1. A friction clutch casing A combined with an expansion ring C so arranged that
rollers or balls E may engage therewith for expanding the said ring into contact
with the inner circumference of the casing A, substantially in the manner as
hereinhefore described.
2. A friction clutch in which are combined a sliding sleeve L, links K,
expansion blocks J, rollers or balls E, expansion ring C and outer casing A,
arranged substantially in the manner as herein before described and illustrated.
3. A friction clutch such as hereinbefore described combined with a sliding
clutch L arranged so as to support the blocks J by wedge or like shaved end Li
and expand the ring C into frictional contact with the casing A, substantially in
the manner as described.
:
DJ:
ليكم
1000