Improvements in Friction Olutches.
Year: 1895

page_text: Date of Application, 17th Sept., 1895
Complete Specification Left, 12th June, 1896-Accepted, 18th July, 1896
Improvements in Friction Olutches.
1, CHARLES WILLIAM BURTON fils, of 68 Rue des Marais, Paris, France,
Engineer, do hereby declare the nature of this invention to be as follows:-
This improved friction clutch is illustrated in the accompanying drawings,
forming part of this specification, in which
Figure 1 represents a longitudinal section of the clutch, taken on line 1-2,
Figure 2.
Figure 2 is a face view of the clutch.
Figure 3 is a detail view shewing the lugs connecting the pulley to the friction
clutch, and
Figure 4 shews another node of attaching the lever to the clutch operating
screw.
The same letters of reference denote like parts in all the figures.
The clutch consists essentially of two spring segments c, c, cast in one with a
boss b, and provided near their extremities with screw-threaded sockets in which
works a right and left handed screw g, whereby the spring arms c are contracted
or expanded according as the screw g is turned in the one or other direction, so as
to reduce or increase the diameter of the male part for the purpose of putting
it out of, or into, frictional contact with the female part or drum a in which it is
enclosed with just the necessary play to enable the former to turn within the
latter without friction when the clutch is out of action. The screw g by which
the spring arms c are extended or contracted, is operated by a fork lever m
engaging with a sliding collar coupled by an adjustable link e with a lever f
made fast on the screw g, either by a set screw as shown in Figure 1 or by a
screw-actuated dog engaging with a fluted part of the screw g as shewn in
Figure 4.
b
For coupling the adjacent ends of two aligned shafts the part a is keyed upon
the one and the part upon the other shaft. The two shafts being in true align-
ment, the peripheral play between a and b will prevent all friction and heating
so long as the clutch is cut of action. When applied to drive a pulley or gear
wheel, the boss of part a would be coupled by Tugs with an independent sleeve d
as shewn in Figures 3 and 4 so that any wear of the latter will not affect the
part a which always remains concentric with the part b the sleeve & being held in
place by a collar o.
Dated this 17th day of September 1895.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.

page_text: I, CHARLES WILLIAM BURTON fils, of 68 Rue des Marais, Paris France,
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 in and by
the following statement :-
This improved friction clutch is illustrated in the drawings accompanying my
Provisional Specification in which
Figure 1 represents a longitudinal section of the clutch taken on line 1--2
Figure 2.
Figure 2 is a face view of the clutch.
Figure 3 is a detail view shewing the lugs connecting the pulley to the friction
clutch and
Figure 4 shews another mode of attaching the lever to the clutch operating
Ecrew.
The same letters of reference denote like parts in all the figures.
The clutch consists essentially of two spring segments ce cast in one with a boss b
and provided near their extremities with screw-threaded sockets in which works a
right and left handed screw g whereby the spring arms c are contracted or expanded
according as the screw g is turned in the one or other direction so as to reduce or
increase the diameter of the male part for the purpose of putting it out of, or into,
frictional contact with the female part or drum a in which it is enclosed with just
the necessary play to enable the former to turn within the latter without friction
when the clutch is out of action. The screw g by which the spring arms care
extended or contracted is operated by a fork lever m engaging with a sliding
collar coupled by an adjustable link e with a lever made fast on the screw g
either by set screw as shewn in Figure 1 or by a scrow-actuated dog engaging
with a fluted part of the screw g as shewn in Figure 4.
For coupling the adjacent ends of two aligned shafts the part a is keyed upon
the one and the part upon the other, shaft. The two shafts being in true
alignment the peripheral play between a and b will prevent all friction and heating
so long as the clutch is out of action. When applied to drive a pulley or gear
wheel the boss of part a would be coupled by lugs with an independent sleeve d as
shewn in Figures 1 and 3 so that any wear of the latter will not affect the part a
which always remains concentric with the part b, the sleeve d being held in place
by a collar o.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed declare that what I
claim is :-
The herein described friction clutch consisting essentially of the male member
formed by the spring segments carried by a boss and adapted to be expanded by
a right and left handed screw operated by lever and link connections and combined
with an enclosing female member or drum, substantially as specified.
Dated this 12th day of June 1896.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.