MENTS IN VALVES
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by the said Luke Berry at the Office
of the Commissioners of Patents on the 25th March 1881.
LUKE BERRY, of Rotherham, in the County of York, Engineer.
MENTS IN VALVES."
"IMPROVE
My Invention relates to improvements in valves for water, steam, or other fluids,
and known as double faced valvos of water supply pipes. The object of my
Invention being to produce a valvo that shall be operated with ease while under
pressure, thus reducing the strain and wear and tear of the various parts, and
in which a clear water way may be obtained from inlet to outlet.
In carrying out my Invention in a valve for a water main, for example, I make
the valve proper of a circular cross section by preference (but other shapes may be
used if desired), and having a passage through it from end to end.
The front face of the valve bears against a circular seating formed round the
outlet to which it corresponds in shape and size, and the back face of the valve
bears against a similar seating formed on a resistance plate, which is supported in
suitable guides attached to the inside of the valve box. The resistance plate
can be raised vertically by means of a screw passing through a stuffing box or
gland.
The body of the valve proper is made in two parts, the joint being by preference
near the centre, and are so secured that they can be forced longitudinally by the
action of a rubber or steel spring, or other elastic medium placed between them so
as to press the faces of the valve to the seatings with sufficient force to keep them
watertight.
The construction of the valve box allows the water supply to pass entirely round
the valve which is thus held in equilibris, and can be very easily raised or lowered
by the usual means; when both the valve and resistance plate are raised there is a
clear waterway through the valve box.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Luke Berry in the Great Seal Patent Office on the
24th September 1881.
LUKE BERRY, of Rotherham, in the County of York.
VALVES."
"IMPROVEMENTS IN
My Invention relates to improvements in valves for water, steam, or other fluids,
and known as double faced valves, and it is especially applicable to the large valvos
of water supply pipes.
The object of my Invention is to reduce a valve that can be operated with great
case while under pressure from the supply, thus reducing the friction and con-
sequently the wear and tear of the working surfaces, and I also obtain a clear
water way direct from the inlet to the outlet of the valve.
In carrying out my Invention (in order to attain the beforenamed advantages)
in the construction of a valve for a water main, for example, and which I have
illustrated in the annexed Sheet of Drawings, I make the valve proper (by which
term I indicate the sliding portion of the complete valve and not the casing), by
preference of a circular cross section, but other suitable cross sections may be used
if desirable, tapering downwards and having a passage through it from back to
front, and is operated by means of a screw working through a gland. The front face
of the valve proper when closed fits against a circular or annular seating round the
outlet, to which it corresponds in shape and size, and the back face of the valve fits
against a similar seating; on what I term a resistance plate a separate plate, which
can be raised vertically, and this and the valve are supported in suitable grooves or
between guides or ribs attached to or formed on the insides of the valve box or
casing. The faces and seatings of the valve may be of gun metal, ebonite, or other
suitable non-corrosive material or substance. The resistance plate is by preference
provided with a screw passing through a stuffing box or gland so that it may be raised
mechanically; but in some cases a plain rod or other similar equivalent may be
used for the same purpose. The body of the valvo proper is made in two principal
parts, the division being vertical and near the centre, and they are so attached or
connected by bolts passing through side lugs that they may be forced apart in a
lateral direction by the action of a spring or springs of rubber, steel, or other
-clastic material placed between them, and thus pressing the faces of the valve
against the seating with sufficient pressure to keep them water tight. The
construction of the valve box allows the water supply to pass entirely round the
valve proper, which is thus held in equilibro, and can be raised or lowered with
ease: When the valve and the resistance plate are raised to their full height,
a direct and clear water way through the valve box is obtained of the full size of
the outlet. In some cases I use a valve the faces of which are parallel, and which
are forced apart by means of a metallic spring, by preference made of sheet steel
or of other suitable metal, and so applied and secured as to make a watertight
joint between the two parts of the valve, and having sufficient elastic strength as
to keep the faces of the valves also watertight.
Having now described my Invention I will refer to the accompanying Sheet
of Drawings that the same may be more fully understood, the same letters
indicating the same or corresponding parts in all the Figures. Fig. 1 is a sectional
elevation of a closed valve complete and made according to my Invention; Fig. 2
is a cross sectional elevation of the same valve through the line X, but showing the
valve proper raised; Fig. 3 is a sectional elevation showing both the valve and the
resistance plate raised so as to allow a clear waterway through the valve box from
inlet to outlet; Fig. 4 is a plan of the valve with the cover removed; Fig. 5 is an

page_text: enlarged view of the stuffing box or gland; Fig. 6 is an enlarged view of the
valve proper resistance plate. A. is the valve box or casing having inlet and outlet
openings; B is the valve proper; C is the resistance plate; D, D, are the valve
faces and seats; E is the screw for operating the valve; F, a similar screw for the
resistance plate; G is a tubular hole through the valve for the screw E to work in;
H, H, are supports for the screws; I, I, are guide strips for the lugs J and K to
work between. The resistance plate is strengthened at the back by the ribs L;
M, M, are the lugs, by which the two parts of the valve are held together.
In the enlarged view Fig. 5 of the stuffing box or gland N is the chamber for
the stuffing; O is a collar on the screw E on which rests the cup shaped washer P
of rubber or other elastic material suitable for the purpose, and through the edge of
which is placed a pin Q; above the elastic washer are a pair of valve faced metallic
collars R and S. The collar R is loose in so far that it can move vertically on the
screw, but 2 slots in its lower flange drop over and engage with the before-
mentioned pin Q, so that it is carried round by the screw; the collar S is driven
tightly into the metal portion of the stuffing box and is pracically a fixture; this
arrangement effectually prevents leakage. In the enlarged view of the valve and
resistance plate Fig. 6, T, T, are the nuts for the screws E and F to work in; G is
the tubular hole for the screw E, and U is a recess for the screw F through the
ribs L; V is a bracket on the resistance plate, there being one on each side, as
shown in Figure 4; these brackets act as stops and limit the vertical down move-
ment of the valve by catching the underside of the side lugs J, also shown in the
other Figures. They also prevent the resistance plate being drawn by mistake
before the valve is lifted; W is a ring or washer of rubber or other elastic
material to act as a spring, and force the faces of the valve against the seatings.
Having now fully described and particularly ascertained the nature of my
Invention, and the manner in which it can be carried into execution, 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 herein before in part recited Letters
Patent is,―
1st. The construction and use of valves for water, steam, and other fluids,
substantially as hereinbefore described and illustrated or any mere modification
thereof.
2nd. The application and use in the stuffing boxes of valves and other similar
stuffing boxes of a cupped elastic washer in combination with valve faced metallic
collars, for the purpose and substantially as hereinbefore described and illustrated.
In witness whereof, I, tho said Luke Berry, have hereunto set my hand and
seal, this Twenty first day of September, in the year of our Lord One
thousand eight hundred and eighty one.
LUKE BERRY. (L.S.)