Improvements in Taps or Valves.
Year: 1898

page_text: Improvements in Taps or Valves.
A communication from ARTHUR HERBERT PINNOCK, of Kingston, Jamaica,
Merchant.
I, ROBERT PINNOCK, of Newport, Isle of Wight, Gentleman, do hereby declare
the nature of this invention to be as follows;
-
This invention relates to taps or valves and may be carried out in the following
manner:
In its general features the valve resembles the well known screw-down valves,
but in the present instance the screw of the handle stem does not put pressure
upon the valve to close it, but when screwed inwards it opens the valve, and
when screwed outwards it allows the valve to close under the fluid pressure
behind it.
Any suitable valve body is employed having an internal projecting collar or
seating which may be covered with an indiarubber or other washer if desired,
and against which the valve rests when closed. The valve is provided with a
stem which may project from both sides, one end extending against or into a
recess in the screwed or other spindle by which the valve is operated, and the
other extending through a suitable perforated flange in the valve body or the
cap, plug or branch which closes it so as to serve as a guide for the valve. The
valve itself may be a simple flat disc or of other suitable construction and the
seating may be of any desired shape or construction so that a flat valve fits
against a flat washer, or a conical valve and seating ground in if desired may
be used. Conveniently the otherwise open end of the valve body may be closed
by a hollow plug or a branch screwing into it, and carrying the guide for the
valve stem and making a tight joint by means of a suitable washer or equivalent,
a hexagonal portion or other means being provided for screwing the plug into
the body.
The branch or bib by which the fluid is delivered may be formed in any con-
venient position, shape etc.
As above described the water or other pressure maintains the valve upon its
seat, though a helical or other spring may be added for this purpose if desired;
preferably the valve has to be raised against the underside of its seating, but
this position may be altered or reversed if preferred. The spindle by which the
valve is operated may be provided with a recess into which the valve stem
enters and screwed into the valve body so that when screwed inwardly
it
the valve and when it is screwed outwardly it allows
the valve to close. If desired the screw thread may be a left-handed one so that
to open the tap the handle will be turned in the ordinary way, but this is quite
optional. It is preferred to enter the spindle from the inside of the valve into
the screwed portion where it rests, and to put the outside handle on afterwards in
opens

page_text: order that the spindle may fit the hole through which it passes and thus dispense
with the necessity of a stuffing box or the equivalent, though where great pressures
or other circumstances render it necessary a stuffing box may be used.
This valve is suitable as a simple delivery valve or it may be placed in a length
of piping as a stop cock.
It will be seen that this valve is cheap to make and can be rendered neat and
durable, and can be arranged so as to avoid almost entirely sharp edges or corners.
Dated this 4th day of February 1898.
BOULT & WADE,
Agents for the Applicant.
(A communication from ARTHUR HERBERT PINNOCK, of Kingston, Jamaica,
Merchant.
I, ROBERT PINNOCK, of,Newport, Isle of Wight, Gentleman, 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:—
This invention relates to taps or valves and may be carried out in the following
• manner:-
In its general features the valve resembles the well known screw-down valves,
but in the present instance the screw of the handle stem does not put pressure
upon the valve to close it, but when screwed inwards it opens the valve, and
when screwed outwards it allows the valve to close under the fluid pressure
behind it.
Any suitable valve body is employed having an internal projecting collar or
seating which may be covered with an indiarubber or other washer if desired,
and against which the valve rests when closed. The valve is provided with a
stem which may project from both sides, one end extending against or into a
recess in the screwed or other spindle by which the valve is operated, and the
other extending through a suitable perforated flange in the valve body or the
cap, plug or branch which closes it so as to serve as a guide for the valve. The
valve itself may be a simple flat disc or of other suitable construction and the
seating may be of any desired shape or construction so that a flat valve fits
against a flat washer, or a conical valve and seating ground in if desired may
be used. Conveniently the otherwise open end of the valve body may be closed
by a hollow plug or a branch screwing into it, and carrying the guide for the
valve stem and making a tight joint by means of a suitable washer or equivalent,
a hexagonal portion or other means being provided for screwing the plug into
the body.
The branch or bib by which the fluid is delivered may be formed in any con-
venient position, shape, etc.
As above described the water or other pressure maintains the valve upon its
seat, though a helical or other spring may be added for this purpose if desired;
preferably the valve has to be raised against the underside of its seating but
this position may be altered or reversed if preferred. The spindle by which
the valve is operated may be provided with a. recess into which the
valve stem enters and screwed into the valve body 80 that when
screwed inwardly it opens the valve and when it is screwed outwardly it allows

page_text: the valve to close. If desired the screw thread may be a left-handed one so that
to open the tap the handle will be turned in the ordinary way, but this is quite
optional. It is preferred to enter the spindle from the inside of the valve into
the screwed portion where it rests, and to put the outside handle on afterwards in
order that the spindle may fit the hole through which it passes and thus dispense
with the necessity of a stuffing box or the equivalent. though where great pressures
or other circumstances render it necessary a stuffing box may be used.
This valve is suitable as a simple delivery valve or it may be placed in a length
of tubing as a stop cock.
It will be seen that this valve is cheap to make and can be rendered neat and
durable, and can be arranged so as to avoid almost entirely sharp edges or corners.
The accompanying drawing is a longitudinal vertical section of a tap con-
structed in accordance with this invention.
The tap comprises a valve disc A with rubber face A¹ fixed upon a spindle A³
and carried loosely within the casing B so that the pressure of the fluid main-
tains the valve A closed by forcing it against the valve seating B¹ formed inside the
casing B. The valve spindle A2 rests at one end in a bearing C¹ in the centre of
a perforated plug C which is screwed into one end of the casing B. The other
end of the spindle A2 rests in a slot or hole D' formed in the screw-threaded
spindle D upon the end of which is mounted a handle D³. A screw-threaded
extension C on the plug C serves to connect the tap to a water or other pipe
containing the fluid to be controlled. On screwing in the spindle D by means
of the handle D³ the valve A is forced off its seat against the pressure of fluid
behind it which is free to flow out of the orifice B2. On screwing the spindle D
out again, the valve returns to its seat owing to the pressure of the fluid behind it.
This pressure may if desired be supplemented by means of a spring E which may
conveniently be situated as shown upon the spindle A2 between the bearing C¹
and the valve disc A.
In constructing the improved tap the screw-threaded spindle D is preferably
placed in position from the inside, the handle D2 being fixed upon the spindle
afterwards. With the tap constructed as above described it is not found necessary
to employ a stuffing box, the spindle D being merely made a good fit within the
casing B through which it screws.
Having now particularly described and ascertained the nature of the said
invention as communicated to me by my foreign correspondent, and in what
manner the same is to be performed, I declare that what I claim is;-
. 1. A screw valve in which the valve is pressed upon its seat by the fluid pressure
assisted or not by a spring and removed therefrom by a screw device forcing the
valve off its seat against the fluid pressure.
2. In a tap or valve the combination with a casing having a valve seat such
as B' against which the valve is pressed by fluid pressure supplemented or not by
a spring of a separate screw-threaded hollow spindle for the purpose of forcing
the valve off its seat.
3. The complete tap or valve substantially as described and illustrated in the
accompanying drawings.
1
1000
BOULT & WADE,
Agents for the Applicant.