IMPROVEMENTS IN COCKS OR VALVES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said James William Restler. at
the Office of the Commissioners of Patents on the 15th July 1882.
JAMES WILLIAM RESTLER of Linden Grove Nunhead in the County of
Surrey "IMPROVEMENTS IN COCKS OR VALVES”
My Invention relates to Cocks or valves and it consists of an improved
construction and arrangement of the parts hereinafter described whereby facility is
afforded for obtaining access to the interior while the parts are exposed to pressure
and the gland or stuffing box usually employed to prevent leakage round the valve.
spindle is enabled to be dispensed with. Means are also provided detecting waste
or escape of water past the valve and for preventing the improper opening of the
valve when it is desired to cut off the supply
In carrying out this Invention the body of the valve is constructed with a
partition provided with a seat on its upper and lower sides each provided with a
valve. The upper valve which works in guides formed on the body of the valve
casing is operated by a screw spindle projecting through the cover of the valve
casing in the usual manner. From the under side of this valve extends a screwed
stem connected to the lower valve which also works in suitable guides formed on
the body of the valve casing. The two valves are maintained at the proper
distance apart by means of a distance piece or a collar or shoulder on the stem a
suitable cap or collar being provided in the lower part of the valve casing for the
insertion of the lower valve.
The under side of the upper valve is provided with a ring or annular projection
which slightly over-laps the outer edge of the seat and a conical surface is also
provided at the under side of this valve which deflects the fluid against the said
ring. The object of this arrangement is that when the valve is slightly open the
passage of fluid is more readily detected by the noise produced by its passage
between the overlapping ring and the valve seating

page_text: The spindle for operating the valves is provided with a screw thread for opening
or closing the upper valve in the usual manner and is passed through a cap or cover
Ecrewed on to the valve casing This spindle is provided with a collar the under
surface of which is flush with the underside of the cap or cover and a disc or
washer of leather or other suitable material is arranged underneath this collar so as
to cover the joint between the edge of a collar and the underside of the cover The
pressure of the water or other fluid against the underside of this disc or washer
forces the latter against the collar and against the underside of the cover and thus
effectually prevents leakage from taking place round the spindle. The valve
spindle is retained in position by a collar fixed to its upper part or by other suitable
means
When it is desired to obtain access to the interior or working parts of the valve
whilst the latter is exposed to the pressure of the water or other fluid, the upper
valve is first opened to its fullest extent the cover is then unscrewed whereby the
lower valve is drawn against its seat and thus prevents any further escape
of fluid
When it is desired to cut off the supply and render it impossible to open the
communication through the valve by turning the valve spindle the upper valve
may be removed and the cap or cover with the spindle replaced in position as
before the passage through the valve will then remain closed by the lower valve
which is thus entirely disconnected from the valve spindle and remains pressed
against its seat by the pressure of the water -

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James William Restler in the Great Seal Patent Office on the
15th January 1883.
JAMES WILLIAM RESTLER of Nunhead in the County of Surrey
MENTS IN COCKS OR VALVES"
"IMPROVE
My Invention relates to Improvements in Cocks or Valves and it consists of an
improved construction and arrangement of the parts hereinafter described whereby
the gland or stuffing box usually employed to prevent leakage round the valve
spindle is dispensed with and waste or escape of water past the valve is readily
detected. Access can also be readily obtained to the interior for effecting repairs or
other purpose while the parts are exposed to pressure and the improper opening of
the valve prevented when the supply is cut off as hereinafter described.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed sheets of drawings the same letters of reference
indicating corresponding parts in all the figures. Figure 1 represents in longitudinal
section and figure 2 in transverse section a cock or valve constructed according to
my Invention. Figures 3 and 4 are exterior views at right angles to each other.
Figures 5 to 18 represent modifications of the said cock or valve as hereinafter
described.
Referring to Figs 1 to 4 the body A of the valve is constructed with a
partition, b, provided with two seats, one b³, on its upper side and another b³;
on its lower side, each seat being provided with a valve. The one valve c works
in guides & formed on the body A of the valve casing and is operated by a screw
spindle, e, projecting through the cover of the valve casing in the usual manner.―
From the under-side of the Valve c extends a screwed stem, c², connected to the
lower Valve, g, which also works in Guides, h, formed on the body A, of the Valve
casing. The two valves, c and g, are maintained at the proper distance apart by
means of a distance piece which may be formed by a collar or shoulder on the
stem, c³, as shewn, an opening closed by a cap, collar, cover or filling pièce i, being
provided in the lower part of the Valve casing A, for the insertion of the lower
valve, g. The under-side of the upper valve c is provided with a thin edged ring or
annular projection, j, which slightly overlaps the edge of the seat, b³. This pro-
jection, , may overlap either the inner or the outer edge of the said seat, b³, when
it overlaps the outer edge a conical surface is provided at the underside of the
valve which conical surface deflects the fluid against the said ring ; the object
of which ring ; is, that when the valve is slightly open, the passage of fluid is more
readily detected by the noise produced by its passage between the thin edge of the
overlapping ring, and the valve seating.
0
The spindle for operating the valve is provided with a screw thread for
opening or closing the said valve in the usual manner and is passed through the
cap or cover, f, screwed on to the valve casing A.-The spindle, e, is provided with a
flange or collar & the under surface of which is flush with the underside of the cap
or cover the said flange being of such a diameter as to equal or exceed the
internal diameter of the valve casing A; a disc or washer, 1, of leather or other
suitable material is arranged underneath this. collar k so as to cover the joint
between the edge of the said collar k and the underside of the cover f. The
pressure of the water or other fluid against the underside of the disc or washer Z
forces the latter against the collar k the joint between the periphery of which and
the cover not being within the interior of the body of the cock or valve the
leather is well supported against the joint and thus effectually prevents leakage

page_text: from taking place at the said joint.-The valve spindle, e, is retained in position by
a collar, m, fixed to its upper part or by other suitable means.
When it is desired to obtain access to the interior or working parts of the valve
whilst the latter is exposed to the pressure of the water or other fluid, the upper
valve c is first opened to its fullest extent, the cover fis then unscrewed, whereby
the lower valve g is drawn against its seat b³, and is retained there by the pressuré
of the fluid, thus preventing the escape of the said fluid.
When it is desired to cut off the supply and render it. impossible to open the
communication through the valve by turning the valve spindle, the upper valve o
may be removed by unscrewing the spindle, e, from the said valve and the valve
stem c³ from the valve g and on the cap or cover f being replaced in position as before,
the passage for the fluid will remain closed by the said valve g which is pressed
against its seat 63. by the pressure of the fluid.
Figures 5, 6, 7 and 8, shew in vertical Sections at right angles to each other in
Section on the line, 1. 2, Figure 5, and in place of the upper part respectively a valve
constructed according to the foregoing description excepting-that in this case the
screw spindle e for operating the valves is formed on the top surface of the upper
valve the screw nut e' for this spindle being formed by coring or drilling out and
tapping the upper spindle e² as shewn which is retained in position by means of
the collar m cast on or otherwise attached to the spindle as shewn.
Figures 9 and 10 vertical and horizontal sections respectively shewing a
modification wherein the upper valve.c is provided with a stem (e³ e*) on both its
upper and lower surfaces of square or other suitable section the upper stem e³ is
actuated by being inserted in a corresponding recess formed in the upper spindle e³
the external circumference of the upper valve c is formed with a screw thread
which works in a corresponding thread formed in the upper half of the valve
casing A.and the lower stem e is inserted in the lower valve g this valve being
provided with a screwed shank g³ working in a corresponding screw thread formed
in the bottom cover i. It will thus be seen that by rotating the upper spindle e³ the
upper and lower valves are also rotated by means of the spindles e and e* and thus
opened or closed by means of the screws on the circumference of the upper valve
and on the shank of lower valve. For obtaining access to the interior of this
valve when under pressure, it is necessary to rotate the spindle e as the cover is
removed, and thus screw the lower valve up to its seat.
Figures 11 and 12 show similar views of a modification in which the upper and
lower valves c and g are separated by means of the spindle e provided with
screws 6 and 7 the upper screw ed working in the nut n is for opening or closing
the upper valve-c and the lower screw.e is for opening or closing the lower valve g
which is prevented from rotating either by guides formed on the body of the valve
casing.A or by making the shank of this valve of square or other suitable section
to engage in a similar recess in the bottom cover i
Figure 13 illustrates a modification wherein in order to provide a removable
seating the general arrangement is modified as follows. The body of the valve
casing A is fitted with the removable seating p in the upper part of which a screw.
nut p³ is formed engaging with the screw e on the spindle e The inner valve c is.
formed with a shank of square or other suitable section for the purpose of
operating the outer or annular valve which is opened or closed by means of the
screw formed on its exterior engaging in a corresponding thread formed in-the
lower cover i.
☐ In obtaining access to the interior of this valve under pressure the cover fis
unscrewed and the valve g screwed up to its seat and the inner valve c together
with its seat p can then be removed.
Figures 14, 15, 16 and 17 represent in vertical section in horizontal section in
transverse section and in elevation respectively a modification in which both the
valves and gare situated in the upper part of the casing A in the interior of
which a nut q is placed it being provided with suitable means for preventing its
rotation the annular valve.c is formed with a screw on its outside circumference

page_text: engaging in a corresponding thread formed in the nut q The upper surface of this
valve c is provided with a stem c³ of square or other suitable section which is
actuated by being inserted into a corresponding recess formed in the upper
spindle e In the centre of the valve c a recess of octagonal or other suitable
shape is formed for the purpose of actuating the inner valve g the upper part
of which is of corresponding shape The valve g is formed with a stem g³ which
at its lower end is provided with a screw thread engaging in a corresponding
thread formed in a boss is cast on the bottom of the valve casing A.
To obtain access to the interior of this valve when under pressure the cover fis
partly unscrewed and the inner valve g screwed down to its seat the cover is then
unscrewed and the nut q and valve c removed.
Figure 18 shews a modification wherein both valves c and g are situated in the
upper part of the valve casing A. In this arrangement the stem of the annular
valve c is made of square or other suitable section engaging in a corresponding
recess formed in the upper spindle e.
The inner valve is formed with a spindle g³ g* on both its upper and lower
surfaces the upper one g³ being made of square or other suitable section and
passing through a corresponding opening formed in the stem of the valve c
which is united to the valve g by means of the nut r screwed to the top of
spindle g³.
The lower spindle g' is formed with a screw at its lower end which engages in
a corresponding thread formed in the boss cast on the lower part of valve
casing A.
To obtain access to the interior of the valve whilst under pressure the valve is
shut the cover f removed and the nut r slacked so as to enable the valve g to be
screwed up to its seat the nut r is then removed and the valve c drawn off the
stem g³.
In all valves described in this Specification ordinary stuffing box tops may if
desired be substituted for the arrangement of packing shewn and described.
Having now described and particularly, ascertained the nature of my said.
Invention and the manner in which the same is or may be used or carried into
effect I would observe in conclusion that what I consider to be novel and original
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is.
First. The arrangement and combination of parts constituting the cock or valve
herein before described and illustrated in Figures 1 to 4 of the accompanying
Drawings and also the various modifications of the said cock or valve hereinbefore
described and illustrated in Figures 5 to 18 of the said Drawings.
Second. In cocks or valves providing the valve which is operated to open and
close or regulate the supply through the said cock or valve with a ring or
projection (5) substantially as and for the purpose herein before described and
illustrated in the accompanying Drawings.
Third. In cocks or valves the employment of the flange or collar k of a diameter
equal to or exceeding the internal diameter of the valve casing A and the disc or
washer 2 substantially as and for the purpose hereinbefore described and illustrated
in the accompanying drawings.
In witness whereof I the said James William Restler have to this my
Specification set my hand and seal this thirteenth day of January One
thousand eight hundred and eighty three.