Improvements in Friction Clutches.
Year: 1894

page_text: Date of Application, 26th Oct., 1894
Complete Specification Left, 24th July, 1895-Accepter, 24th Aug.. 1895
Improvements in Friction Clutches.
We WILLIAM SHORE, and GEORGE EDWARD COUPE, both of Shelton,
Hanley in the County of Stafford, Engineers, do hereby declare the nature of this
invention to be as follows
This invention relates to such friction clutches as are used for connecting and
disconnecting certain parts of machinery, shafts and other rotating bodies and the
object is to provide improved means for connecting the operating lever or levers
with the segmental friction blocks usually used in this class of mechanism and also
to provide means for taking up any wear that may take place in the working
parts.
To this end, therefore, the invention consists essentially in the combination with:
the operating lever or levers-or it may be links, or the like-of other links and
levers, which form one or more sets of toggle joints, preferable two, and also in the
combination with such toggle joints of wedges, or other equivalent mechanism, by
means of which the wear of the parts may be taken up.
In carrying out our invention and referring more particularly to a clutch such as
we should construct for connecting together two pieces of shafting, or for causing
a shaft to transmit, or cease to transmit, power to other mechanism we use a disc
of the ordinary kind, which is provided with an overhanging flange at one side.
This disc is loose on the shaft and in close proximity to it, but fixed on the shaft, .
is a double armed lever through each end of which is passed a pin supporting a
segmental friction block. On the shaft is also mounted a loose sleeve which may
be advanced nearer to, or brought further from, the main body of the clutch by
any of the means ordinarily employed. This sleeve has pivoted to it the end or
ends of one or more links the opposite ends of which are coupled to one or more.
levers preferably two. The fulcra of the latter levers are on the double-armed.
lever before named and. are in the same plane as the axis of the shaft. At each
side of the centre of each of the second levers is a pin which connects such lever to
a pair of links each of which is in turn coupled to one of the friction blocks:
before named. The manner of connecting the links to the friction blocks is by
pins which are held in position by plates secured to the blocks by bolts, and to take
up any wear in the parts the pins connecting the links to the blocks may be brought
nearer to or further from the centre of the main shaft by means of sliding wedges
or other equivalent devices.
It will be obvious that the details of the invention may be departed from without
in any way affecting the spirit of the invention.
1004
Per pro EMMOTT & CO., LIMITED,
ROBERT WOOD, Secretary,
Bridge Street, Manchester, Agents for the Applicants.

page_text: improvements in Friction Clutches.
We, WILLIAM SHORE and GEORGE EDWARD COUPE both of Shelton Hanley
in the County of Stafford, Engineers 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 invention relates to such friction clutches as are used for connecting and
disconnecting certain parts of machinery, shafts and other rotating bodies and 'the
object is to provide improved means for connecting the operating lever or levers
with the segmental friction blocks usually used in this class of mechanism and also
to provide means for taking up any. wear that may take place in the working
partsi
To this end, therefore, the invention consists essentially in the. combination with
the operating lever or levers or it may be links or the like of other links and
levers which form one or more sets of toggle joints, preferably two, and also in the
combination with such toggle joints of wedges, or other equivalent mechanism, by
means of which the wear of the parts may bettakemup..
The invention will be fully described with reference to the accompanying
drawings in which
Fig. 1 is an end elevation partly in section of a clutch constructed in accordance:
with our invention and
Fig. 2 is a side elevation, partly in section...
In carrying out our invention and referring, more particularly to a clutch such as
we should construct for connecting together two pieces of shafting or for causing a
shaft to transmit, or cease to transmit, power to other mechanism we use a disc A
of the ordinary kind, which is provided with: an overhanging flangera at one side.
This disc is loose on the shaft B and in close proximity to it, but fixed on the shaft,
is at double armed -lever C through each end of which is passed a pin.c supporting a
segmental friction block D: On the shaft is also: mounted a loose sleeve. E which
may be advanced nearer to or brought further from the main body of the clutch by
any of the means ordinarily employed. This sleeve has pivoted to it the end-or
ends of one or more liukse the opposite ends lof which are coupled to one or more.
levers F preferably two. The levers F are pivoted on studs of projecting from the
sides of the double armed lever C the centres of the studs being in the same plaue..
as the axis of the shaft B.
At each side of the centre of each of the levers E is a pin which connects such
lever to a pair of links G each of which is in turn coupled to one of the friction
blocks D by its outer end being passed on to the end of the pin C where it is.
retained by a cotter: The pins are held in position by plates: Hi'secured to the
blocks D by bolts h and to take up any wear in the parts the pinsic connecting the
links to the blocks may be brought nearer to or further from the centre of the main
shaft by means of sliding wedges J or other equivalent devices..
From the foregoing description it will be obvious that as the sleeve E is moved
along the shaft B.to the right the levers F through links e are pulled down-
wards and consequently the pins f¹ are rotated about the central pin thus altering
the position of the links G and causing the friction blocks D to be drawn nearer to
the axis of shaft B. In this way the rotation of the diste A is stopped. When the
sleeve E is moved in the opposite direction the reverse action takes place.
•
It will be obvious that the details of the invention may be departed from without
in any way affecting the spirit of the invention and that while the invention is shewn
in the manner indicated it must be understood that the clutch is applicable for all
the purposes to which clutches are now generally applied.
-

page_text: 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) In a clutch for the purposes described the combination with the operating
lever or levers and with segmental friction blocks of other links and levers which
form one or more sets of toggle joints substantially as described.
(2) In a clutch for the purposes described the combination with the friction
blocks D of the means for readily adjusting wear and tear substantially as
described.
(3) A friction clutch constructed and arranged substantially as described and
shewn in the accompanying drawings.
Dated this 22nd day of July 1895.
EMMOTT & CO., LIMITED,
Per pro C. S. EDWARDS, General Manager,
Agents for the Applicants.