Improvements in Friction and other Clutches.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Friction and other Clutches.
We, F. REDDAWAY & Co. LIMITED, of Cheltenham Street, Pendleton, Man-
chester, in the County of Lancaster, Manufacturers of Woven Machine Belting
and Hose, DE COURCY CAMPBELL TAYLOR DAVIS, of The School House, Delph,
in the County of York, Engineer, and THOMAS POTTER, of 77, Lissadel Street,
Pendleton, aforesaid, Loom Jobber, do hereby declare the nature of this inven-
tion to be as follows:
Our said invention relates to improvements in friction and like clutches
used in the transmission of rotary motion as is well understood.
The invention has for its object to simplify and cheapen the construction of
such clutches.
Under one form of clutch in which a purely frictional or non-positive drive
is obtained we key or otherwise secure upon the driving shaft or part a suitable
disc or plate of any convenient diameter this disc or plate constituting the
driving half of the clutch. Upon the same shaft or upon the driven shaft
another disc or plate is arranged such disc or plate being formed with a suit-
ably flanged periphery or rim. This second disc or driven half of the clutch is
preferably carried upon a suitable boss or sleeve running loose upon the shaft
the boss or sleeve being formed with a ring groove or the like in which the
disengaging fork or part bears. When the clutch
kept in contact with the driving disc by means of a suitably disposed spring and
in gear the driven disc is
motion is transmitted from the driving half of the clutch by means of the
frictional grip between the extended faces. To disengage the clutch the loose
or sliding half of the clutch is moved by means of a fork or the like against the
action of the spring and driving ceases until such time as the fork is released.
When the fork is released the spring again thrusts the driven half into gear
with the driver.
Under a modification of our invention we not only obtain a frictional but a
positive drive. In constructing a clutch of this type we employ a suitable
hollow pulley or clutch half within which is held a loose disc guided by studs,
or the like. Between this loose disc and the interior of the pulley a suitable
spring is arranged the tendency of which is to force the disc forward.
The hollow pulley is formed with a boss, or runs upon a sleeve, in which is
formed a suitable groove for the lever or part which moves the clutch in and
ut of gear.
The hollow pulley also carries a suitable number of studs or bolts which are
orced forward by means of springs so as to engage slots or holes cut in a slotted
ace plate which forms the driving half of the clutch.
When the loose hollow pulley is forced forward to put the clutch in
ushes the loose internal disc against the slotted face plate and the driving at
it
gear
nce commences by friction the locking action between the two, parts taking
lace immediately after owing to the studs or bolts entering the slots or holes

page_text: in the slotted face plate or driving half of the clutch. By these means the full
driving power is gradually put on and strain and jar avoided.
In some cases we may dispense with the loose internal disc and arrange the
loose half of the clutch to bear against the slotted face plate the loose half
being forced into engagement with the face plate by means of a spring and in
this case we should employ special means to advance and retract the spring
bolts employed to lock the two halves.
For instance, superior springs may hold the locking studs out of engagement
such springs being overcome by a dise or arms sliding on the boss of the loose
half of the clutch when the fork is operated and the clutch thrown in.
The clutch is in this instance also started by friction the locking action
following.
We may in all cases employ leather or other strips between the frictional
surfaces to increase the grip.
We do not confine ourselves to details so long as the faces of friction discs
are forced into contact and the discs locked by sliding parts.
Improvements in Friction and other Clutches.
We, F. REDDAWAY & Co. LIMITED, of Cheltenham Street, Pendleton, Man-
chester, in the County of Lancaster, Manufacturers of Woven Machine Belting
and Hose, DE COURCY CAMPBELL TAYLOR DAVIS, of The School House, Delph,
in the County of York, Engineer, and TноMAS POTTER, of 77, Lissadel Street,
Pendleton, aforesaid, Loom Jobber, do hereby declare the nature of this inven-
tion 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 said invention relates to improvements in friction and like clutches
used in the transmission of rotary motion as is well understood.
The invention has for its object to simplify and cheapen the construction of
such clutches.
Our invention will be clearly understood from the following description, when
read in connection with the annexed three sheets of drawings, in which:-
On Sheet 1.
Fig. 1 shows a form of friction clutch, suitable for loom and like driving
purposes, and constructed in accordance with our invention..
On Sheet 2.
Fig. 2 shows another form of clutch in which a positive engagement of the
parts takes place, the view being partly in section.
Fig. 3 is an end elevation of Fig. 2, one half of the view showing the section
on the line A B.
Fig. 4 is a detail sectional view on the line C D Fig. 3.
On Sheet 3.
Fig. 5 shows a further modified form of clutch, in which a partly positive
drive is obtained.
Under the form of clutch shown in Fig. 1 (Sheet 1) of the drawings, in which
a purely frictional or non-positive drive is obtained, we key or otherwise secure

page_text: upon the driving shaft or part A, a suitable disc or plate 6 of any convenient
diameter, this disc or plate constituting the driving half of the clutch. Upon
the same shaft, or upon the driven shaft, another disc or plate c is arranged such
disc or plate being formed with a suitable flanged periphery or rim c¹. This
second disc, or driven half of the clutch, is preferably carried upon a suitable
boss or sleeve d running loose upon the shaft, the boss or sleeve being formed
with, or carrying, a ring or groove e or the like in which the disengaging fork
or part bears.
When the clutch is driving or in gear, the driven disc is kept in contact
with the driving disc b by means of a suitably disposed spring f, and motion
is transmitted from the driving half of the clutch by reason of the frictional
grip between the extended faces. To disengage the clutch, the loose or sliding
half of the clutch is moved by means of a fork or the like, against the action
of the spring f, and driving ceases until such time as the fork is released.
When the fork is released the spring f again thrusts the driven half c into
gear with the driving half b.
The spring is held up to its work by means of an adjustable collar or step g.
In order to increase the bite between the driving and driven halves of the
clutch we prefer to employ leather or the like strips or rings h.
Under a modification of our invention, and as shown in Sheet 2, we not only
obtain a frictional engagement but so arrange the parts as that they at times
interlock so that a positive drive results.
type we employ a suitable hollow pulley or clutch half i, within which is held
In constructing a clutch of this
a loose disc j, guided by studs or the like. Between this loose disc and the
interior of the pulley a suitable spring f is arranged the tendency of which
is to force the disc j forward.
The hollow pulley is formed with a boss i¹, or runs upon a sleeve, in which
is formed a suitable groove e, for the lever or part which moves the clutch in
and out of gear.
The hollow pulley i also carries a suitable number of studs or bolts 1, which
are forced forward by means of springs so as to engage slots or holes m cut
in a slotted face plate which forms the driving half of the clutch.
When the loose hollow pulley i is forced forward to put the clutch in gear,
it pushes the loose internal disc against the slotted face plate b and driving at
once commences by friction, the locking action between the parts taking place
immediately after owing to the studs or bolts entering the slots or holes m
in the slotted face plate or driving half of the clutch. By these means the full
driving power is gradually put on and strain and jar avoided. Any suitable
number of bolts may be used and the slots are of such a length as to ensure
that one or more of the bolts always enter immediately the clutch is thrown in.
In some cases under a further modification of our invention, and as shown
in Fig. 5 (Sheet 3), we may dispense with the loose internal disc j and arrange
the loose half of the clutch n, to bear against the slotted face plate 6 the loose
half being forced into engagement with the face plate by means of a spring f
and in this case we should employ special means to advance and retract the.
spring bolts employed to lock the two halves.
For instance, springs 2 (which are stronger than the springs 1) may hold the
locking studs or spindles out of engagement, such springs being overcome by
a disc or arms o sliding on the boss of the loose half of the clutch when the
fork is operated and the clutch thrown in. When the action of the springs
is overcome the springs force the studs or spindles 7 into engagement with
the slotted face plate b.
The clutch is in this instance also started by friction, the locking action
following.
We may in all cases employ leather or other strips h between the frictional
surfaces to increase the grip.
We do not confine ourselves to precise constructional details so long as the

page_text: faces of friction discs are forced into contact in the indicated manner and locked
when desired by sliding bolts or parts.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1) The improved form of friction clutch, having a fixed driving half or disc b,
and a loose half or disc c running on a sleeve, the loose half being pressed into
engagement with the fixed half by means of a spring or springs, substantially
as herein described and shown in Fig. 1 (Sheet 1).
2) A driving clutch, having a fixed driving half, and a loose half carrying a
plate or disc such as j, the loose half also carrying bolts which engage slots m
formed in the fixed half b when the clutch is in gear, in the manner, and
substantially as herein described and shown in Figs. 2, 3 and 4 (Sheet 2).
3) A driving clutch, having a fixed driving half b and a loose half n carrying
bolts arranged to engage at times with the fixed driving half b in the manner
and substantially as herein described and shown in Fig. 5 (Sheet 3).
Dated this 24th day of Anril 1900.
Dated this 24th day of April 1900.
For the Applicants,
E. K. DUTTON & Co.,
Chartered Patent Agents, 5, John Dalton Street, Manchester, & 20
3, Yorkshire Street, Rochdale.