Improvements in Valves for Pipes for Water, Gas, and other Fluids under Pressure.
Year: 1895

page_text: Date of Application, 23rd Dec., 1895
Complete Specification Left, 23rd Sept., 1896-Accepted, 14th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in Valves for Pipes for Water, Gas, and other Fluids
under Pressure.
We, EDWIN JAMES PRESTON, of the Firm of J. Stone & Co., of Deptford in
the County of Kent, and ALFRED THOMAS CORNISH in the employ of the said
firm, Engineers, do hereby declare the nature of this invention to be as follows:-
These improvements refer to valves for pipes for water, gas and other fluids
under pressure and especially to means for keeping their spindles fluid tight without
the use of hemp packed-stuffing boxes.
In valves used in connection with apparatus for drilling and tapping mains under
pressure and for connecting branch or service pipes thereto we make such valve in
the form of a plug screwed externally for working in the so-called "ferrule"
screwed inside and out and provide the plug with a deep square recess, and to
operate this plug valve we provide a spindle square in its lower part so as to be
capable of working up and down in the recess of the plug, and round at its upper
end where it works in the pipe connection; to prevent leakage we provide the
spindle at this place with a hat leather, cup leather, or joint washer which is held
in place by a ring nut; in the upper end of the spindle is formed a square recess
for a corresponding key to fit in, for turning it by, and therewith also the screw
plug or valve; this key is inserted through a cap on the pipe connection.
Or the spindle may at its upper end be formed with a Hange that is kept from
rising by means of a cap screwed upon the pipe connection while free to turn
therein, a joint washer being fitted under the flange.
Or the spindle formed with an upper end as last described works with its lower
square part in a square recess in a square sleeve which again works in a square
recess in the valve or plug and at its upper end has a round flange which works in
the upper part of the pipe connection and may be fitted with a hat leather or cup
leather, in which case the aforesaid washer at the cap may be omitted.
For the so-called sluice valves and fire cocks, we provide for the spindle two cup
leathers, one around the spindle below the stuffing box and another in the stuffing
box or gland, this latter cup leather superseding the ordinary hemp packing. The
upper cup leather is held in a recess in the gland or stuffing box, and the bottom
of the gland may be tightened down upon a joint washer. Or instead of this
gland arrangement we may use a "hat leather" which combines the functions of
the cup leather and the washer.
The gland may be screwed down by means of a bayonet joint device which may
be formed by two or more taper lugs on the gland which engage with recesses in
the stuffing box, the latter being formed with slots for entering the said lugs. Or
cice versa the lugs may be on the outside of the stuffing box and the recesses in a
cap formed on the gland. Or we may use a shallow cap or a plate instead of the
gland.
Instead of the bayonet joint we may use bolts and nuts. In order to prevent the
gland from coming undone by friction against the valve spindle, when the latter is
worked, we fix the gland in the screwed down position by means of a set screw or
a clip or other suitable means.
," "hat leathers" and "washers" hereinbefore named may be
The "cup leathers,"

page_text: or leather, vulcanized rubber, dermatine, asbestos, or other suitable material, all
according to the nature of the fluid for which the valves are used.
Dated this 23rd day of December 1895.
JENSEN & SON,
77 Chancery Lane, London, Patent Agents.
Improvements in Valves for Pipes for Water, Gas, and other Fluids
under Pressure.
We, EDWIN JAMES PRESTON of the Firm of J. Stone & Co. of Deptford in
the County of Kent, and ALFRED THOMAS CORNISH in the employ of the said
firm 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 :-
pressure
These improvements refer to valves for water gas and other fluids under
and especially to means for keeping their spindles fluid tight without the use of
hemp packed stuffing boxes.
Figs. 1 and 2 are sectional side elevations of a valve used in connection with
apparatus for drilling and tapping pipe mains under pressure and for connecting
branch or service pipes thereto. Fig. 1 shews the closed position of the valve or
plug when the service pipe is shut off from the main and Fig. 2 the position when
the service pipe is in communication with the main.
The valve A we make in the form of a plug screwed externally for working in
the so called ferrule B which latter is screwed inside and outside. The plug A is
provided with a deep square recess A¹, and C is a spindle for operating the plug.
This spindle is formed square in its lower part so as to be capable of working up
and down in the square recess A' of the plug and round in its upper part where it
works in the pipe connection casting D. To prevent leakage we provide a hat
leather E (or cup leather or joint washer) which is held in place by a ring nut F
in a screwed cap G. The upper end of the spindle is formed square as shown for
a spanner to turn it by or formed with a square recess for a corresponding key to
fit in for turning it by. Thus when the spindle C is turned round the screw
plug A is also turned round. The stop pin H keeps the spindle C from dropping
down.
Fig. 3 shews another arrangement in which the spindle C is formed with a
flange Cx that is kept from rising by means of the screwed cap G upon the pipe
connection D while free to turn therein, a joint washer E with brass washer E¹
being fitted under the flange Cx. The spindle C works with its lower square part
in a square recess in a square sleeve C¹ which again works in a square recess A¹ in
the valve or plug A and at its upper end has a round flange C which works in the
upper part of the pipe connection and may be fitted with a hat leather or cup
leather in which case the aforesaid joint washer E and brass washer E¹ at the cap
may be omitted.
The upper end of the spindle C and parts connected therewith Figs. 1 and 2
may be formed in the manner just described with reference to Fig. 3 instead of in
the manier shewn in Figs. 1 and 2.
Fig. 4 shews an arrangement in which the plug A is formed with a round recess
containing a block A' having a recess A shewn in the plan view Fig. 5 into which
the end of the loose or detachable key C Fig. 6 can be inserted. The cap G¹
contains the cupleather E and the flat leather washer E.
By making the valve in two or three parts as described viz. the plug or valve A
proper and the spindle C, or spindle Cand sleeve C, the advantage is obtained
that when the bottom end of the ferrule B containing the plug A, Fig. 1, has been

page_text: screwed into the main pipe and the part D has been connected thereto, the act of
unscrewing the plug A to open communication between the main pipe and the
service pipe is performed without the possibility of the slightest leakage of water
through D, however great may be the pressure in the main.
For the so-called sluice valves and fire cocks or hydrants we arrange the upper
end of the spindle as shewn in Figs. 4 to 10 superseding the ordinary hemp
packing.
In the sectional elevation Fig. 7 we provide the spindle A with two cupleathers,
one B around the spindle below the stuffing box and another C in the stuffing box,
the cup leather superseding the ordinary hemp packing. The upper cup-
leather C is held in a recess in the stuffing box gland D, Fig. 8 is a plan of
one form of the gland. The cup leather B has the usual interior spring ring.
Fig. 9 shews another arrangement in which a hat leather C is used instead of the
upper cupleather.
Fig. 10 shews an arrangement in which the gland D contains the upper cup-
leather C and is screwed down upon a joint washer F by a bayonet joint device,
the gland being formed with taper lugs, as shewn in the detail view Fig. 104, which
engage with recesses in the stuffing box, the latter being as shewn in the plan view
Fig. 8 formed with slots for entering the lugs. Or vice versa the lugs may be on
the outside of the stuffing box and the recesses in a cap formed on the gland.
Fig. 12 shews an arrangement of bayonet joint gland D in connection with a hat
leather C.
In order to prevent the gland from coming undone by friction against the valve
spindle when the latter is worked, we fix the gland in the screwed down position
by means of a set screw or a clip or other suitable means.
Fig. 13 shews an arrangement suitable for large valves say above 12 inches; the
cover D¹ is in this case secured by bolts and nuts.
Small holes such as H' are provided where necessary as is well known, for
conveying fluid pressure to the interior of the cupleathers.
A cap of brass such for instance as I Fig. 13 may in all cases be provided on the
gland D for the purpose of excluding dust and grit.
The " cup leathers ""hat leathers" and "joint washers" herein before named
may be of leather, vulcanized rubber, dermatine, asbestos, or other suitable
material, all according to the nature of the fluid for which the valves are used.
The use of the upper packing C together with the lower packing B affords
additional security. Either of these packings ordinarily lasts as long as the valve,
but if from some exceptional cause the lower packing B should become imperfect,
the upper packing C would still keep the stuffing box tight. As all repacking of
the stuffing box is done away with we avoid all expense and inconvenience in
breaking up roadway, excavating and making good the ground surface, all of
which are necessary when ordinary sluice valves bave to be repacked.
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 valves used in connection with apparatus for drilling and tapping pipe
mains under pressure and for connecting service pipes thereto the combination of
the valve A with recess A', the spindle C and the means described with reference
to Figs. 1, 2, 3 and 4, for enabling the spindle to work fluid tight through the
cap G.
2. In valves used as firstly claimed the combination of the valve A with recess A',
the sleeve C, the spindle C, and the means for enabling the spindle to work fluid
tight through the cap G, as described with reference to Fig. 3.
3. In valves used as firstly claimed the combination of the valve A with recess
block A', the detachable spindle C and the means for enabling the spindle
to work fluid tight through the cap G, as described with reference to Figs. 4, 5
and 6.

page_text: 4. In sluice valves, hydrants, firecocks, and other such valves the means for
enabling the valve spindle A to work fluid tight through the cover E and gland D,
as described with reference severally to Figs. 7 and 8, Fig. 9, Figs. 10, 104 and 11,
Fig. 12 and Fig. 13.
Dated this Twenty-third day of September 1896
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.
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