Improvements in Taps for Water and other Liquids.
Year: 1895

page_text: Date of Application, 12th Mar., 1895
Complete Specification Left, 2nd Dec., 1895-Accepted, 1st Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Taps for Water and other Liquids.
HENRY CURWEN of Thirty-two Sidney Grove Newcastle on Tyne in the
County of Northumberland, Gentleman do hereby declare the nature of this
invention to be as follows:-
My invention relates to improvements in taps for water and other liquids, in
which the valve opens against the pressure and closes with it, as in my Patent of
the Fifth of July 1885 and numbered 8888, but is a valuable improvement upon
that Patent. The improvement being a well adjusted combination of screw and
self-acting slide. The slide being a part of the valve rod which is attached to the
washered valve and which works it in opening and shutting, and this action of
opening and shutting being assisted by the pressure in the pipe as explained below.
I attach great importance to this combination of screw and self-acting slide rod, and
believe it to be not only a novel combination but one that will give better results
than any other yet discovered.
The way it works is this, in opening the valve you turn the tap handle from
right to left in the usual way & this action has the effect of causing the screw to
descend down the valve rod slide till it reaches the shoulder of the valve rod, this
being continued it pushes the washered valve from its seat, & this having been
done a little, the pressure begins to act on the upper side of the valve & gains the
ascendancy, so that the valve is slotted downwards & the tap is immediately open
at the full.
In closing the valve a similar action ensues for as soon as the screw (which is
left handed) is turned the reverse way, the valve begins to ascend towards its seat,
on this being done the pressure leaves the upper side of the valve & concentrates
itself on the under side of the valve & immediately slots it home to its seat &
effectually closes it; closes it too by the pressure in the pipe, irrespective of the
screw, so that it is next to impossible to leave the tap dropping: moreover the
screw & self acting slide rod combination has another advantage, it acts so gently
in closing that it prevents concussion in the pipes, a fault common to all other
self closing taps.
I apply the self-acting slide, with screw arrangement in several ways, but the
principle is the same.
Dated this Talamonth day of March 1805
Improvements in Taps 10r water and o
HENRY CURWEN of No. 32 Sidney Grove in the City and County of
Newcastle on Tyne, 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:-
My invention relates to improvements in taps for water and other liquids in
which the valve opens against the pressure and closes with it as in the Specification
ונס...מ

page_text: of my Patent of the 5th of July 1885 and numbered 8888, but is a valuable improve-
ment upon the subject matter of that Patent. The improvement being a well
adjusted combination of screw and self-acting-slide, the slide being a part of the
valve rod, which is attached to the washered valve, and which works it in opening
and in shutting, and this action of opening and shutting being assisted by the
pressure in the pipe, as explained below.
I attach great importance to this combination of screw and self-acting slide rod
and believe it to be not only a novel combination, but one that will give better
results than any other yet discovered.
The way it works is this-In opening the valve you turn the tap-handle from
right to left in the usual way and this action has the effect of causing the screw to
descend down the valve-rod slide till it reaches the shoulder of the valve-rod, this
being continued it pushes the washered valve from its seat, and this having been
done a little, the pressure begins to act on the upper side of the valve and gains
the ascendancy, so that the valve is slotted downward and the tap is immediately
open at the full.
In closing the valve a similar action ensues, for as soon as the screw (which is
left-handed) is turned the reverse way, the valve begins to ascend towards its seat,
on this being done the pressure leaves the upper-side of the valve and concentrates
itself on the underside of the valve and immediately forces it home to its scat
and effectually closes it, closes it too from this point by the pressure in the pipe
irrespective of the screw so that it is next to impossible to leave the tap dropping:
moreover the screw and self-acting slide-rod combination has another advantage,
it acts so gently in closing that it prevents concussion in the pipes, a fault common
to other self-closing taps.
I apply the self acting slide, with screw arrangement in several ways, but the
principle is the same.
That my invention may be better understood I annex drawings which I now
proceed to describe-
The several parts are lettered as follows-
A Handle.
B Handle-shaft and hollow screw.
B Thread of hollow-screw.
C Valve rod.
C¹ Valve rod and slide (or slot stem).
C Valve rod shoulder.
C³ Slot space for connecting pin.
D Connecting pin.
D' Hollow space in screw of handle shaft.
E Washer.
F Valve.
G Valve seat.
H Shell of tap.
J Packing or stuffing box.
K Access plug.
FIGURE 1.
On turning the handle A right to left A and B and B move together and
descend by reason of screw down the valve-rod slide C¹ to shoulder (and being
continued it pushes the washer E and washered valve F from its seat G then after
this has been done a little, the pressure of the liquid gains the ascendancy on the
upper side of washered valve F and E and forces them downwards towards access
plug K, and the tap is immediately open at the full.
In closing the valve a similar action ensues, for as soon as the screw (which is
left handed) is turned the reverse way, the washered valve F begins to ascend
towards its scat G, on this being done the pressure leaves the upper side of
the washered valve F and concentrates itself on the underside of the same and
FIGURE 1.
On turning the handle A right to left A and B and B¹ move together and
descend by reason of screw down the valve-rod slide C' to shoulder C2 and being
continued it pushes the washer E and washered valve F from its seat G then after
this has been done a little, the pressure of the liquid gains the ascendancy ou the
upper side of washered valve F and E and forces them downwards towards access
plug K, and the tap is immediately open at the full.
In closing the valve a similar action ensues, for as soon as the screw (which is
left handed) is turned the reverse way, the washered valve F begins to ascend
towards its seat G, on this being done the pressure leaves the upper side of
the washered valve F and concentrates itself on the underside of the same and

page_text: immediately forces it home to its seat G without waiting for the hollow screw B
and B' to draw it there, the pressure thus effectually closing it, so that it is next to
impossible to leave the tap dropping; this result is obtained by the neck or
slide rod C moving up and down in the cavity of the hollow screw B in opening
and in shutting, and is kept in its place by the connecting pin D thus the screw
and slide combination acts as a check, one upon the other and prevents concussion
in the pipes.
FIGURE 2.
The Figure 2 is in all respects the same as Figure 1, except that the valve
rod C is modified and made thicker, and has the metal cut away so that the liquid
may have freer passage out, and that the said valve rod may steady itself against
the interior of the neck or hollow shell of the tap, and so bear greater strain, also
the connecting pin D works in a groove of the slide rod C¹, so as to allow the
handle A to be turned without turning the valve F.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
First. A tap or cock for water and other liquids to open against the pressure
in the pipe and close with it, by a well adjusted slide (or slot) and screw com-
bination whereby leakage at the valve and valve-seat is prevented, and concussion
in the pipe overcome. The valve action of this combination may be described as
part slide or slot motion, and part hand screw motion. The slide or slot motion
in opening and in shutting being assisted by the pressure of the liquid in the pipe
and yet under the control and subject to the screw, which screw is worked by the
hand as herein before set forth.
Second. The particular construction and arrangement of the self acting slide
and screw combination together with any mere modification of the same substantially
as shewn in the annexed drawings and foregoing description.
Dated this 30th day of November 1895.
HENRY CURWEN.