Improvements in Friction-clutches.
Year: 1890

page_text: Date of Application, 11th Apr., 1890
Complete Specification Left, 10th Jan., 1891-Accepted, 21st Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in Friction-clutches.
We WILLIAM KENYON Senior, WILLIAM KENYON Junior, GEORGE HENRY
KENYON and EDWIN KENYON, all of the firm of Messrs. William Kenyon and
Sons of the Chapel-fields Rope Works, Dukinfield, in the County of Chester, Rope
Makers, do hereby declare the nature of this invention to be as follows:-
Our invention relates principally to a former invention for which Letters Patent
Number 6297 of the year 1888 have been granted to us. In such former invention.
one member of a conical friction clutch was mounted to revolve upon a sleeve
which could be slid upon the driven or driving shaft in order to engage and
disengage the clutch.
In our present invention we mount the sliding member of the clutch to revolve
upon a long boss which is formed in one piece with the fixed member of the clutch
or which carries such fixed member and we impart the sliding movement to the
part which moves to effect the disengagement by means of a sleeve or ring which
is mounted upon the boss of such part and engages with the fork of the clutch
lever. The apparatus is more self contained than when constructed in accordance
with our former invention and is better adapted for application to shafts which are
not perfectly true or which may not be finished to standard diameters.
In some
cases it is advisable to arrest the revolution of the driven shaft or body as quickly
as possible after the disengagement of the clutch. For use in such cases we
provide the apparatus with a conical brake which is of similar formation to the
clutch one member of the brake being fixed upon the same boss or sleeve as the
fixed member of the clutch the other member of the brake being fixed to or formed
in one piece with the sleeve or ring through which the disengaging movement is
imparted. Studs fixed to the said ring or sleeve or to the sliding member of the
brake engage with the clutch lever the said sliding member being prevented from
revolving. When the clutch lever is acted upon to disengage the clutch the short.
sliding movement of the clutch lever ring brings the two parts of the conical brake
into frictional contact and as the one member revolves with the shaft whereas the
other member is kept from revolving by reason of its connection with the fork of
the clutch lever the rotation of the driven shaft or part is quickly arrested. We
lubricate the friction surfaces of the brake so that a thin film of lubricant is
interposed between the two conically formed surfaces whereby the excessive wear of
the parts is prevented and the risk of the jamming or sticking together of the parts
is also lessened there being no necessity for the lining of the brake with leather or
other material as in ordinary brakes.
Dated this 10th day of Anril 1890
DUTTON & FULTON,
1, St. James Square, Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in Friction-clutches.
We WILLIAM KENYON Senior, WILLIAM KENYON Junior, GEORGE HENRY
KENYON and EDWIN KENYON, all of the firm of Messrs. William Kenyon and
Sons of the Chapel-fields Rope Works, Dukinfield, in the County of Chester, Rope
Makers, 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 and accompanying drawings
:-
Our invention relates principally to a former invention for which Letters Patent

page_text: Number 6297 of the year 1888 have been granted to us. In such former invention
one member of a conical friction clutch was mounted to revolve upon a sleeve
which could be slid upon the driven or driving shaft in order to engage and
disengage the clutch.
In our present invention we mount the sliding member of the clutch to revolve
upon a long boss which is formed in one piece with the fixed member of the clutch
or which carries such fixed member and we impart the sliding movement to the
part which moves to effect the disengagement by means of a sleeve or ring which
is mounted upon the boss of such part and engages with the fork of the clutch
lever. In some cases it is advisable to arrest the revolution of the driven shaft or
body as quickly as possible after the disengagement of the clutch. For use in.
such cases we provide the apparatus with a conical brake which is of similar
formation to the clutch one member of the brake being fixed upon the same boss or
sleeve as the fixed member of the clutch the other member of the brake being
fixed to or formed in one piece with the sleeve or ring through which the dis-
engaging movement is imparted. Studs fixed to the said ring or sleeve or to the
sliding member of the brake engage with the clutch lever the said sliding member
being thereby prevented from revolving.
When the clutch lever is acted upon to disengage, the clutch the short sliding
movement of the clutch lever ring brings the two parts of the conical brake into
frictional contact and as the one member revolves with the shaft whereas the other
member is kept from revolving by reason of its connection with the fork of the
clutch lever the rotation of the driven shaft or part-is quickly-arrested....
In order that our invention may be clearly understood we will describe the same.
more fully with reference to the accompanying drawings whereof Fig. 1 represents
a section of a driving clutch constructed in accordance with our invention and Fig. 2
a section of a driving clutch and brake combined.
In both examples a is the shaft upon which the clutch is mounted b is the member
which is fixed upon the shaft and c is the sliding member which is mounted to run
loose when not in driving gear with the part . In both cases the part b is formed-
with a long boss upon which the part c is loosely mounted instead of being
mounted to run loose upon the shaft a as in our former invention. In Fig. 1 the
part c is also formed with a long boss c' which is bored to revolve upon the turned
boss b. A ring d is attached by means of screws d' to the boss e so as to form a
collar and in the groove between this collar and a turned shoulder c² is loosely
seated a ring or sleeve e so that the boss c¹ can revolve within such ring. To this
ring two studs or bowls ffare secured. When the clutch is applied in position for
use the fork of the clutch lever engages with the said studs. The part c c is free
to slide to and fro upon the boss 6 and it will be seen that by the aid of an ordinary
clutch lever the clutch can be engaged and disengaged. The apparatus is more
self-contained than when constructed in accordance with our former invention and is
better adapted for application to shafts which are not perfectly true or which may
not be finished to standard diameters.
In Fig. 2 a conical brake is applied so that the combination resembles a double
clutch. One member g of the brake is keyed or secured upon the boss b¹ so that
the parts and g always revolve with the shaft. The other member h of the brake
is loosely mounted upon the boss c¹ of the sliding part c of the clutch, the part / in
fact taking the place of the ring e in Fig. 1 and being provided with studs or
bowls to engage with the fork of the clutch lever.
It will be seen that when the clutch lever is acted upon to disengage the clutch
the short sliding movement of the parts c and h will bring the inner conical surface
of the latter part into frictional contact with the conical periphery of the part y
and as the part g revolves with the shaft whereas the part is prevented from
revolving by reason of its connection with the fork of the clutch lever the rotation
of the parts cg and as a consequence of the shaft a is quickly arrested.
Provision is made for access of oil to the surface of the boss c'. In practice we
lubricate the friction" surfaces of the brake so that a thin film of fubricant is

page_text: interposed between the two conically formed surfaces whereby the excessive wear of
the parts is prevented and the risk of the jamming or sticking together of the parts
is also lessened there being no necessity for the lining of the brake with leather or
other material as in ordinary brakes.
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 combinations of parts constructed and designed to act substantially as
and for the purpose set forth and indicated.
2. The clutch member b formed with a turned boss b' and the member c mounted
to revolve and to slide upon such boss in combination with a ring or sleeve e loose
upon the boss of the part c and with means for connecting such ring or sleeve with
the fork of a clutch lever substantially as set forth and indicated.
3. The brake wheel g fixed upon the boss of a clutch member 6 and the brake
piece h mounted loose upon the boss of the other member of the clutch serving to
slide such member to and fro and adapted to act upon the said brake wheel to arrest
motion when the clutch is disengaged in combination with a clutch lever which
prevents such brake piece from revolving substantially as set forth and indicated.
Dated this 9th day of January 1801
DUTTON & FULTON,
1, St. James Square, Manchester, Agents.