Year: 1886

page_text: Date of Application, 19th June, 1886.
Complete Left, 11th Mar., 1887.
Complete Accepted, 15th Apr., 1887.
I, LOUIS ROOVERS, of Liege in the Kingdom of Belgium, Mechanical Engineer do
hereby declare the nature of this invention to be as follows:-
The present invention has for its object, to replace the usual plug in cocks, taps
valves, and so forth, by an improved stopper or closing piece of increased efficiency
and less rapid wear.
In the cocks and valves at present in use, the plugs are subject to rapid wear and
as their tightness depends upon the exact contact of two uniform rigid surfaces it
follows that the slightest wear will cause leakage; a further drawback with the old
system is that hermetic tightness can only be secured by screwing up the plug
extremely hard, which renders the opening and shutting of the tap difficult.
Now my improved system is designed to obviate all these drawbacks and to givo a
perfect closure without excessive wear, or undue resistance in working.
It consists essentially in the replacement of the usual plugs or stoppers by an im-
proved closing piece specially adapted to the fluid, the flow of which it will have to
control. It may be constructed with tow, asbestos, antimonial, or other packing, or
even a simple india rubber or leather washer.
The details of the apparatus may be varied according to the object in view: thus
for instance in the case of an ordinary stop cock, the plug is replaced by a tube open
at one end and retained by means of a threaded part, between two stuffing boxes this
tube has in its circumference one or more holes so arranged that when the tap is open
the holes aforesaid are between the two stuffing boxes and consequently form a com-
munication between the interior and the exterior, whilst in the closed position the hole
or holes of the tube are in contact with the stuffing and consequently the communi-
cation between inside and outside is intercepted.
In the case of a clack valve the principle is the same, but with the difference that
the threaded part of the tube may be replaced by a suitable apparatus actuating a
rack or equivalent device for imparting to the clack or slide of the valve a to and fro
motion, opening or closing the orifices for the passage of the fluid.
My improved system is applicable to all classes of plugs, but especially to ordinary
taps or stop cocks, valves, cocks for steam boilers, steam whistles, guage-glasses

page_text: and so forth. In order to more fully set forth the same, I will describe various
applications of my system illustrated in the accompanying drawings.
Figure 1 is a section of a vertical stop-cock open and
Figure 2 shews the same closed: the working is controlled by a screw i turning in
a corresponding matrix in the box as in an ordinary stop cock.
Figures 3 and 4 are also sections of vertical stop cocks on my system shewing
various modifications in the details.
Figures 5 and 6 are sections of horizontal stop cocks shewing various methods of
control.
In this system the plug of ordinary cocks is replaced by the cylindrical piece E
(Figures 1 and 2) hollow below and controlled by a screw thread i and its passage
through the body of the cock is made tight by two stuffing boxes e c¹. Perfora-
tions a a place the conduit in communication with E and consequently with the
exterior when the cock is open. These perforations a a are so arranged that when
the screw is screwed down they are entirely enclosed by the stuffing box c' and thus
the cock is closed.
i
In the arrangement illustrated by Figure 3 the upper end of the rod E has a
head K in which revolves the knot terminating the screw S, so that if S be turned
in either direction by means of the handle H the perforated circle L is withdrawn
from or pushed into the stuffing box O for the purpose of opening or closing
the cock.
Figure 4 shews an alternative method of effecting the same operation consisting of
a bent lever H suitably articulated upon the arm A and one of its extremities works
in an incision in the bar S which raises the tube E when the free end of the lever is
depressed.
In Figure 5 the tube E is shewn placed horizontally the front end thereof being
connected by a draw bar z with the handle or elbow K of the revolving bar S mounted
in the stop cock. The rod S is revolved by means of knob M, so that when this has
made a half turn, the perforation circle Lis released from the stuffing box and the
How begins. In this construction it should be noted that the tap will close itself
automatically when applied to a pipe under pressure, because the fluid exerts a pressure
on the closed hinder end of the tube E.
Figure 6 shews an arrangement in which tube E is formed by the end of the fluid
pipe itself whilst the tap is moveable thereon, in such wise that the stopper o is drawn
over or moved from the circle of perforations L by means of handle H attached to the
tap for the purpose.
The above described devices are furthermore so simple that additional description
beyond reference to the drawings appears needless.
Dal 191 loof T 100C
WM. P. THOMPSON & Co.,
Filing Agents,
Of 6, Lord Street, Liverpool, and.
323, High Holborn, London,
Patent Agents for the Applicant.
40

page_text: I, LOUIS ROOVERS of Liege, in the Kingdom of Belgium, Mechanical 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:-
The present invention has for its object to replace the usual plug in cocks, taps,
valves, and so forth by an improved stopper or closing piece of increased efficiency
and less rapid wear.
In the cocks and valves at present in uso the plugs are subject to rapid wear and
as their tightness depends upon the exact contact of two uniform rigid surfaces, it
follows that the slightest wear will cause leakage; a further drawback with the old
system is that hermetic tightness can only be secured by screwing up the plug
extremely hard, which renders the opening and shutting of the tap difficult.
Now my improved system is designed to obviate all these drawbacks, and to give a
perfect closure without excessive wear or undue resistance in working.
It consists essentially in the replacement of the usual plugs or stoppers by an im-
proved closing piece specially adapted to the fluid, the flow of which it will have to
control. It may be constructed with tow, asbestos, antimonial or other packing, or
even a simple india-rubber or leather washer.
The details of the apparatus may be varied according to the object in view: thus
for instance in the case of an ordinary stop cock, the plug is replaced by a tube open
at one end and retained by means of a threaded part between two stuffing boxes:
this tube has in its circumference one or more holes so arranged that when the tap is
open, the holes aforesaid are between the two stuffing boxes, and consequently form a
communication between the interior and the exterior whilst in the closed position the
hole or holes of the tube are in contact with the stuffing, and consequently the
conimunication between inside and outside is intercepted.
In the case of a clack valve the principle is the same, but with the difference that
the threaded part of the tube may be replaced by a suitable apparatus actuating a rack
or equivalent device for imparting to the clack or slide of the valve a to-and-fro motion
opening or closing the orifices for the passage of fluid.
My improved system is applicable to all classes of plugs, but especially to ordinary
taps or stop cocks, valves, cocks for steam boilers, steam whistles, gauge-glasses,
and so forth. In order to more fully set forth the same I will describe various
applications of my system illustrated in the drawings filed with the Provisional
Specification.
Figure 1 is a section of a vertical stop cock open and
Figure 2 shows the same closed, the working is controlled by a screw i turning in
a corresponding matrix in the box as in an ordinary stop-cock.
Figures 3 and 4 are also sections of vertical stop-cocks on my system shewing
various modifications in the details.
Figures 5 and 6 are sections of horizontal stop-cocks shewing various methods of
control.
In this system the plug of ordinary cocks is replaced by the cylindrical piece E
(Figures 1 and 2) hollow below and controlled by a screw thread i and its passage
through the body of the cock is made tight by two stuffing boxes c, c¹. Perfora-

page_text: tions a a place the conduit in communication with E and consequently with the
exterior when the cock is open. These perforations a a are so arranged that when
the screw is screwed down, they are entirely enclosed by the stuffing box C², and
thus the cock is closed.
į
In the arrangement illustrated by Figure 3 the upper end of the rod E has a
head K in which revolves the knob terminating the screw S, so that if S be turned in
either direction by means of the handle H the perforated circle L is withdrawn from
or pushed into the stuffing box O for the purpose of opening or closing the cock.
Figure 4 shews an alternative method of effecting the same operation, consisting of
a bent lever H¹ suitably articulated upon the arm A, and one of its extremities works
in an incision in the bar S which raises the tube E, when the free end of the lever is
depressed.
In Figure 5 the tube E is shewn placed horizontally the front end thereof being
connected by a draw bar with the handle or elbow K of the revolving bar S
mounted in the stop cock. The rod S is revolved by means of knob M so that when
this has made a half-turn, the perforation circle L is released from the stuffing box,
and the flow begins. In this construction it should be noted that the tap will close
itself automatically when applied to a pipe under pressure because the fluid exerts a
pressure on the closed hinder end of the tube E.
Figure 6 shews an arrangement in which tube E is formed by the end of the fluid
pipe itself, whilst the tap is movable thereon in such wise that the stopper o is drawn
over or moved from the circle of perforations L by means of handle H attached to
the tap for the purpose.
The above described devices are furthermore so simple that additional description
beyond reference to the drawings filed with the Provisional Application appears
needless.
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
1. In stop-cocks of all kinds the application of a stuffing box arrangement to
replace the ordinary plug mechanism, substantially as above described.
2. The improved stop-cock, the plug of which is formed by the rod or cylinder E
partially hollow, with screw thread and having perforations a a communicating with
the conduit, and with the outside when the cock is opened, and entirely enclosed
within the stuffing box c¹ when the same is closed:
3. The combination of the head K of the rod E with the screw S turning in the
casing G in such manner as to raise or depress the perforations I..
4. The combination of the rod S in one with the tube E, with the lever H¹
articulated on arm A for the purpose described.
5. The combination of the front end of the tube E with the handle or bend K of
the rotating bar S by means of the draw-bar z for the purpose of adjusting the circle
of perforations L, as desired.
6. The fixing of tube E upon the liquid pipe, and the moving of the casing over
the circle of perforations by means of handle H.
The whole substantially as and for the purposes described, and illustrated in the
drawings filed with the Provisional Application.
Dated this 10th dow of March 1887
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Agents for the Applicant.