Year: 1888

page_text: RESER
Date of Application, 28th Apr., 1888
Complete Specification Left, 28th Jan., 1889
Complete Specification Accepted, 2nd Mar., 1889
We WILLIAM KENYON, Senior, WILLIAM KENYON, Junior, GEORGE HENRY
KENYON and EDWIN KENYON all of the firm of Messieurs William Kenyon and Sons
of the Chapel Field Rope Works, Dukenfield in the County of Chester, Manufacturers
of Cotton and Hemp Driving Ropes and Bands do hereby declare the nature of this
Invention to be as follows :-
Our said Invention relates to friction clutches for starting, stopping and reversing
all classes of machinery to which such clutches can usefully be applied. In our..
improved clutch, the frictional driving surfaces are inclined with relation to the axis of
the clutch, the angle of inclination being preferably such as will give a good driving
contact when the surfaces are brought together without the necessity for applying
great pressure to hold the surfaces together and without the risk of their sticking or
becoming wedged or jambed together. This result is obtained by a careful selection
of the angle of the frictional surfaces. For example we have ascertained that an
efficient angle is from 3 to 7 degrees relatively to the axial line although we do not say
that an angle slightly more obtuse or more acute might not in some cases be found to be
equally efficacious. In a useful form our improved clutch consists of two discs, one
of which is keyed fast to the shaft and bas its periphery turned and ground to the
correct angle. The other disc has an inner inclined surface similarly turned and
ground, and is capable of being slid in and out of contact with the fixed revolving
disc. We mount this movable disc upon a sleeve which slides loosely upon the shaft
and we connect the shifting lever or pusher to a square or flattened boss or collar
secured to this sleeve whereby the sleeve carrying the disc is moved towards and away
from the revolving driving disc. The long bearing afforded by the sleeve prevents -
the shaft from becoming worn. When the two discs are brought into contact the disc
carried by the sleeve revolves thereon, being confined between a collar at the inner
end of the sleeve and the square or flattened boss or collar at the outer end of the sleeve
and to which the shifting lever or pusher is connected. The disc carried by the sleeve
bas grooves or surfaces formed on or attached to its periphery for the reception of

page_text: driving ropes, bands or belts, and the clutch can be so arranged as to serve for
reversing when such is required. Of course it will be evident that instead of making
the female portion of the clutch the driving half we might make it the driven half and
secure the male portion fast to the shaft.
Dated this 97th day of Anril 1888
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.
1
COMPLETE SPECIFICATION.
Improvements in Friction Clutches.
"We, WILLIAM KENYON Senior, WILLIAM KENYON Junior, GEORGE HENRY
KENYON and EDWIN KENYON all of the firm of. Messieurs William Kenyon and Sons
of the Chapel Field Rope Works, Dukinfield, in the County of Chester, Manu-
facturers of Cotton and Hemp Driving Ropes and Bands, 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 description and accompanying
drawing:
Our said Invention relates to friction clutches for starting, stopping and reversing
all classes of machinery to which such clutches can usefully be applied. In our
improved clutch, the frictional driving surfaces are inclined with relation to the axis of
the clutch, the angle of inclination being preferably such as will give a good driving
contact when the surfaces are brought together without the necessity for applying
great pressure to hold the surfaces, together and without the risk of their sticking or
becoming wedged or jambed together. This result is obtained by a careful selection
of the angle of the frictional surfaces. For example we have ascertained that an
efficient angle is from 3 to 7 degrees relatively to the axial line although we do not
say that an angle slightly more obtuse or more acute might not in some cases be found
'to be equally efficacious.
And in order that our said invention may be properly understood we will now
proceed more particularly to describe the same with reference to the annexed drawing
which illustrates a useful form of our improved clutch.
The example selected for illustration consists of two disés a and b one of which a is
secured by means of a key c or other means to the shaft d and has its periphery e
turned and ground to the correct angle. The other disc has an inner inclined
surface similarly turned and ground, and is capable of being slid in and out of

page_text: contact with the fixed' disc a. We mount this movable disc b upon a sleeve 9 which
slides loosely upon the shaft d and we connect the shifting lever or pusher which does
not appear in the drawing, to a square or flattened boss or collar / secured to this
sleeve g whereby the sleeve carrying the disc is moved towards and away from the
stationary fixed disc a. The studs perform the double duty of securing the square
boss to the sleeve g and of presenting trunnions or pivots to engage with the shifting
lever. The disc b is thus held between the ruff on the end of the sleeve and the
square boss h. The long bearing afforded by the sleeve g prevents the shaft from
becoming worn. Lubrication is effected through an oil hole kand the oil is conducted
by a gutter along the sleeve g some of it being expelled by centrifugal force between
the two discs thus keeping the two inclined frictional surfaces e and lubricated so that
there is usually a thin film of oil between them. The bearing of the sleeve with the
shaft dis lubricated by another oil hole n which is bored through both the boss and
the sleeve g.
Vent holes m are or may be made in the side of the disc a so as to allow
the discs to come readily together, and by restricting the number of these vent holes
or by dispensing with them altogether it will be found that a two sudden or careless
throwing of the friction clutch into gear is rendered impossible. When the two
discs a and bare brought into contact the disc a fixed to the shaft d revolves, and
rotates the shaft d also. The disc b carried by the sleeve g has a groove o or grooves
formed on or attached to its periphery for the reception of driving ropes, or round
bands, and the clutch can be arranged so as to serve for reversing when such is required
two clutches being used in such a case. It will of course be evident that instead of
making the female portion of the clutch the driving half we might make it the driven
half the shaft d constantly revolving.
Having now, particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what we
claim is-
(1) The general arrangement and combination of parts composing the improved
friction clutch constructed and operating substantially as hereinbefore described and
shown.
(2) In a friction clutch intended for circular band or rope driving purposes and
having smooth inclined frictional driving surfaces ef as described, the combination
with the loose disc b of the sleeve g to carry the disc, the boss and studs i and the
means for effecting the lubrication of the boss and the frictional surfaces substantially
as described and shown.
(3) In a clutch of the indicated nature the boss g as and for the purposes described
and shown.
Dated thin oath dow of T1000
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.