Improvements in Stop or Regulating Valves.
Year: 1893

page_text: Date of Application, 29th Dec., 1893
Complete Specification Left, 1st Oct., 1894-Accepted, 3rd Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in Stop or Regulating Valves.
We, HERBERT CHARLES PALAIRET WOOLMER, of The Vicarage, Sidcup in
the County of Kent, Engineer, and DAVID DUNCAN ESSON, of No. 52 Queen
Victoria Street, in the City of London, Engineer, do hereby declare the nature of
the said invention to be as follows :-
This invention relates to improvements in stop or regulating valves.
In stop valves, as ordinarily constructed, much difficulty is met with from the
presence of grit, sand or other extraneous matter which is liable to prevent the
complete closing of the valve, and, more especially in the case of a fluid under
pressure, a leakage is likely to occur past the valve from this cause, and, in
such valves, the way or passage is not altogether clear and this encourages the
accumulation of such matter.
Furthermore, it is necessary that a valve of this class should be held tightly to its
seat whilst it is usually actuated by means of a spindle passing through a stuffing
box or the like, all these points being productive of friction and preventing the
smooth and effective working of the valve.
This construction also renders it difficult or impossible to properly cleanse a
length of piping in which the valve is situated, a point of great importance, where
viscous material is passed therethrough.
Now the object of the present invention is to obtain a valve which will show a
clear way or passage therethrough and in which the actuating means do not come
into contact with the fluid passing therethrough, so that no injury can accrue
therefrom and no stuffing box is needed whilst the presence therein of extraneous
matter, such as, grit or sand will not prevent the same effectually closing.
For this purpose, a short length of tube or hose of india-rubber or other suitable
material is employed which may be either plain, corrugated or fluted, and this
length of tube is flanged at the ends.
The ends of this length of tube are passed through two rings or collars formed
on their outer faces with annular recesses to receive the flanges of the tube, and
these rings or collars are adapted to be bolted to corresponding rings or flanges of
a pipe or conduit or otherwise according to the position in which it is intended that
the valve shall be employed.
The flanges of the tube not only serve to hold the tube in position but also assist
to form a perfect joint between the valve and its connection thus dispensing with
the present more complex method of forming a joint.
The length of tube may however in some cases be formed without flanges and
fixed in position by other suitable means.
The rings or collars are connected by longitudinal bars which together therewith
constitute a skeleton frame or holder for the tube, and, mounted in guides arranged
transversely of these longitudinal bars with capability of end way movement and
preferably nearer to one ring or collar than the other that is to say out of the centre
of the length of the tube, is a suitable clamping frame which embraces the tube,
and which, at or near its upper end, is furnished with a bar or crosshead adapted to
move in guides longitudinally of the frame, whilst a screw actuated by a hand
wheel or lever is mounted in a nut carried by the clamping frame and when desired
impinges upon the moveable bar or crosshead thereby forcing the loose bar and the

page_text: fixed bottom bar of the frame together and more or less compressing the tube and
thereby narrowing or entirely stopping the way therethrough.
For some purposes, in lieu of the screw for actuating the clamping frame a cam
or equivalent device might be substituted.
In some cases, the clamping device is actuated by a powerful spring and is caused
normally to nip the tube and close the way therethrough whilst the screw and
hand-wheel or equivalent device is employed to compress the spring and permit the
way through the tube to more or less open.
By placing the clamping frame out of the centre of the length of the tube, the
tube may, when it becomes worn at that point, be turned end for end, thus bringing
a fresh surface into position to be acted upon by the clamping frame.
.By the means hereinbefore described, a simple form of valve is obtained which is
perfectly tight, which is not liable to get out of order from any cause, and which
can, in the event of damage, be easily repaired, whilst the initial cost thereof is
considerably less than that of an ordinary well fitted valve.
means of
The frame may be constructed of stamped steel and so act as a
equalizing the expansion and contraction consequent upon varying temperatures
thus dispensing with the well known expansion joints in long lengths of tube.
Dated this 29th day of December 1893.
VAUGHAN & SON,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Stop or Regulating Valves.
We, HERBERT CHARLES PALAIRET WOOLMER, of The Vicarage, Sidcup, in
the County of Kent, Engineer, and DAVID DUNCAN ESSON, of No. 52, Queen
Victoria Street, in the City of London, Engineer, do hereby declare the nature of
the said invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
Our said invention relates to improvements in stop or regulating valves.
In stop valves, as ordinarily constructed, much difficulty is met with from the
presence of grit, sand, or other extraneous matter which is liable to prevent the
complete closing of the valve, and, more especially in the case of a fluid under
pressure, a leakage is likely to occur past the valve from this cause, and, in
such valves, the way or passage is not altogether clear, and this encourages the
accumulation of such matter.
Furthermore, it is necessary that a valve of this class should be held tightly to
its seat whilst it is usually actuated by means of a spindle passing through a stuffing
box or the like, all these points being productive of friction and preventing the
smooth and effective working of the valve.
This construction also renders it difficult or impossible to properly cleanse a
length of piping in which the valve is situated a point of great importance where
viscous material is passed therethrough.
Now, the object of the present invention is to obtain a valve which will show a
clear way or passage therethrough, and in which the actuating means do not come
into contact with fluid passing therethrough so that no injury can accrue therefrom
and no stuffing box is needed, whilst the presence therein of extraneous matter,
such as grit or sand, will not prevent the same effectually closing.
For this purpose, a short length of tube or hose of india-rubber or other suitable
material is employed which may be either plain, corrugated, or fluted, and this
length of tube is flanged at the ends.
The ends of this length of tube are passed through two rings or collars formed
on their outer faces with annular recesses to receive the flanges of the tube, and
these rings or collars are adapted to be bolted to corresponding rings or flanges of

page_text: a pipe or conduit or otherwise according to the position in which it is intended that
the valve shall be employed.
The flanges of the tube not only serve to hold the tube in position but also assist
to form a perfect joint between the valve and its connection, thus dispensing with
the present more complex method of forming a joint.
The length of the tube may however in some cases be formed without flanges and
fixed in position by other suitable means.
The rings or collars are connected by longitudinal bars which together therewith
constitute a skeleton frame or holder for the tube, and, mounted in guides arranged
transversely of these longitudinal bars with capability of endway movement and
preferably nearer to one ring or collar than the other that is to say out of the
centre of the length of the tube, is a suitable clamping frame which embraces the
tube, and which at or near its upper end is furnished with a bar or crosshead
adapted to move in guides longitudinally of the frame whilst a screw actuated by a
hand wheel or lever is mounted in a nut carried by the clamping frame and when
desired impinges upon the moveable bar or crosshead thereby forcing the loose bar
and the fixed bottom bar of the frame together and more or less compressing the tube
and thereby narrowing or entirely stopping the way therethrough.
For some purposes, in lieu of the screw for actuating the clamping frame, a cam
or equivalent device might be substituted.
In some cases, the clamping device is actuated by a powerful spring and is caused
normally to nip the tube and close the way therethrough whilst the screw and hand
wheel or equivalent device is employed to compress the spring and permit the way
through the tube to more or less open.
By placing the clamping frame out of the centre of the length of the tube, the
tube may, when it becomes worn at that point, be turned end for end thus bringing
a fresh surface into position to be acted upon by the clamping frame.
And, in order that the said invention may be more clearly understood and readily
carried into effect, we will proceed, aided by the accompanying drawings, more
fully to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1. is a side elevation of a stop or regulating valve having the present
invention applied thereto.
Figure 2. is a plan thereof.
Figure 3. is an end view thereof.
Figure 4. is a vertical longitudinal section taken on the line 1-1 of Figure 2.
Figure 5. is a vertical transverse section taken on the line 2-2 of Figure 1.
Figure 6. is a sectional view representing a modified compressing device, and,
Figure 7. is a similar view representing a further slight modification in which a
spring is employed to provide the compressing force.
In the several figures like parts are indicated by similar letters of reference.
Referring to Figures 1 to 5, a. represents a short length of tube or hose formed
of india-rubber or other suitable material and of plain cylindrical form or it might
be corrugated or fluted, and this length a. of tube is at cach end formed with
flanges a'.
The Hanged ends a' of the length of tube a. are passed through two rings or
collars upon their faces formed with annular recesses to receive the flanges of
the tube a. and these rings or collars b', which are formed of metal, are provided
with a number of holes so that they are adapted to be bolted ou to corresponding
rings or flanges of pipe or conduit or otherwise according to the position in which
it is intended that the valve shall be employed.
The flanges a¹ of the tube a. not only serve to hold the tube in position, but also
assist to form a perfect joint between the valve and the object to which it is
connected, thus dispensing with the present more complex method of forming a
joint.

page_text: The length of tube a. may however in some cases be formed without flanges a¹
and fixed in position by any suitable means as will be readily understood, and such
for example as clamping rings carried by the collars b¹.
The rings or collars are connected by longitudinal bars b. which together
therewith constitute a skeleton frame or holder for the tube a., and mounted in
guides arranged transversely of the longitudinal bars b. with capability of endway
movement and preferably nearer to one ring or collar than the other, that is to
say, out of the centre of the length of the tube a. is a suitable clamping frame c.
which embraces the tube a. and which at or near its upper end is furnished with a
bar or crosshead c' adapted to move in guides longitudinally of the frame c. whilst
a screw c actuated by a hand wheel or it might be a lever is mounted in a
nut carried by the clamping frame c. and when desired impinges upon the
moveable bar or crosshead e thereby forcing the loose bar or crosshead c and the
fixed bottom bar c* of the frame together and more or less compressing the tube a.
and thereby narrowing or entirely stopping the way therethrough as may be
required.
In the example given at Figure 6., the screw 2 for actuating the clamping
frame c. is dispensed with and a grooved or slotted can c² is substituted therefor,
such cam being fixed with the actuating handle or lever mounted upon an axis of
motion carried by the top fixed bar of the frame e.
The action of this device for some purposes possesses an advantage, inasmuch as
it is more rapid in action than the screw hereinbefore described.
In the example given at Figure 7., the positive means hereinbefore shown and
described and such as a screw or cam for compressing the tube a. are dispensed
with, and in lieu thereof a powerful spring is employed which at one end takes
an abutment against the top bar of the frame c. and at the other end bears upon the
loose clamping bar e the action of this spring e² being to normally nip the tube a
and close the way therethrough as represented in the drawings whilst a screw **
and hand wheel cor, it might be an equivalent device, is employed to raise the
loose bar c¹ and compress the spring e² more or less opening the way through the
tube a.
A loose connection is made between the clamping bar c¹ and the screw * in
order to allow of the free action of the spring c upon the clamping bar c¹ when the
screw 2 is screwed down to allow of the spring compressing the tube a.
By placing the clamping frame c. out of the centre of the length of the tube a, as
represented in the drawings, the tube a. may when it becomes worn at that point
be turned end for end, ts bringing a fresh surface into position to be acted upon
by the clamping frame c.
The frame c. may, if desired, be constructed of stamped steel in order to
compensate for the expansion and contraction consequent upon varying
temperatures, thus dispensing with the well known expansion joints in long lengths
of tube.
It may sometimes be desirable to enclose the tube except that part which is
immediately acted upon by the compressing device within a flexible or other
metallic shield or cover in order to protect the same and prevent the undue
expansion of the tube at that part.
By the means herein before described, a simple form of valve is obtained which is
perfectly tight which is not liable to get out of order from any cause, and which
can in the event of damage be easily repaired whilst the initial cost thereof is
considerably less than that of an ordinary well fitting valve.
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 :-
In a stop or regulating valve, the combination of a length of flexible tube, a
longitudinal frame or holder therefor, a transverse compressing frame embracing the
tube and mounted in the frame with capability of vertical movement, a bar capable

page_text: of sliding in the compressing frame and a screw or other means acting against the
one end of the compressing frame and upon the moveable bar, substantially as
herein shown and described and for the purpose stated.
DL: 1-4
bahan 1004
VAUGHAN & SON,
Agents for the Applicants.