Year: 1896

page_text: Date of Application, 29th Aug., 1896
Complete Specification Left, 13th Jan., 1897-Accepted, 22nd May, 1897
I, DAVID PERFITT GRIFFITHS MATTHEWS Laburnum House Cardiff Road
Newport Monmouthshire Engineer and Brass Founder, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in valves and the same is carried out as
follows:-
I provide a spindle which carries a flat plate of metal which opens or closes an
aperture in a seating secured in the body of the tap or valve. This spindle also
carries a chamber in which suitable elastic material may he carried for the purpose
of minimising the shock when the valve is suddenly closed or opened.
Dated this 21st der of March 1896
E. EATON,
Agent for Applicant.
ещения
I, DAVID PERFITT GRIFFITHS MATTHEWs, of Laburnum House, Cardiff
Road, Newport, in the County of Monmouth, Engineer and Brass Founder, 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 stop valves, and consists in an improved construction of
such valves whereby their action is improved, and the shock which generally occurs
when the valve is suddenly closed and opened is minimised; and consists of various
modes of construction whereby increased security and dispatch in action etc. etc. are
afforded to be as follows:-
Fig. 1 represents a sectional elevation of my invention adapted to an ordinary
stop valve or the like.
Fig. 2 plan of body of Fig. 1.
Fig. 3 shews a modified form of my invention adapted to lever actuated valves.
Fig. 4 plan of body of Fig. 3.
Figs. 5 and 6 sectional elevation and plan of one modification adapted to segment
valves and the like, the radius of which to match the inside diameter of the valve
body and actuated by the spindle B.
Figs. 7 and 9 represent two other modifications in sectional elevation, and
Figs. 8 and 10 plans of 7 and 9 respectively, with their covers removed.
In Fig. 1 M-represents the body of an ordinary-stop valve or the like which
may be made from iron, brass or any other suitable material; N, N are the flanges
for connecting in any convenient position, and O is the top part of the valve in
which the valve cylinder E and spindle B are arranged, and held in position for

page_text: working within the crown or cover D, (made with or without, stuffing box to-
receive spindle B). In the absence of a stuffing box I use a washer C of leather
or other material to assist in arresting concussion, and for making the valve body
air-tight as per drawing Fig. 1. This cover may be made to screw down into the
top portion of the valve body M, or with a flange to fit a corresponding one
cast on to the top portion O and secured in the ordinary manner by studs, nuts
and bolts, or other suitable device. When made as shewn in the accompanying
drawing a square head P is cast on the top to allow of adjustment in case of wear,
and also of tightening up. Inside this cover D works the cylinder E which may
be cast in a piece with the spindle B, screwed thereto, or fixed in any convenient
manner. To the other end of this spindle B is cast or secured in any convenient
manner the valve G, which may be of any section. In this view the valve G is
shewn of semi-circular form with a small fap 4, the object of this lap being to add'
additional strength to the valve aud prevent excessive wear on the face of the
valve seat H. The valve seat H is cast in one piece with the valve area p a little
less than semicircular to allow of the face of the valve G covering and completely
closing the valve opening by means of the lap when not in use. The seat H is
screwed into the body of the valve to permit of removal and re-facing when word.
The handle A of the valve may be cast in a piece with, or connected to the
spindle B in any suitable manner. Inside the cover D and on the outer top face
of the cylinder E is a washer C of leather or other suitable material to prevent
leakage of the spindle B through the crown D. Around the spindle B is fitted a
tube from the inner face of the cylinder E to the top of the valve G, which may
be made of india-rubber or other elastic substance, which will assist in resisting
concussion when the valve is suddenly closed. The inner portion of the cylinder E
may also be lined with like substance of suitable section to fit into and hold itself
in position. J represents the inlet and I the outlet of the valve. When the
valve is fully opened to allow a free passage, and it is suddenly required to be
closed the shock of the valve spindle and crown, by the pressure of the influx, is
grently minimised by the intervention of the elastic sleeve F and the lining of the
cylinder E, thereby greatly reducing the wear and tear of the valve and also
securing a more air-tight crown, and arresting concussion in the supply pipes.
In Fig. 3 a modified form of my invention is shewn fitted to lever actuated
valves, the body M, flanges N, top portion O and crown or cover D, being in shape
similar to, and as described with reference to Fig. 1. To the cover D are cast or
otherwise attached one or more brackets or offsets L which are drilled at their
upper part to receive a pin or other device a forming the pivot on which works
the lever A', the one end of which passes through a slot b in the spindle B thus
governing and actuating the valve.
In this valve the pistou E is shewn with a conical end E' which has four
holes K of convenient shape and size to allow of the passage of the water, gas or
the like flowing through when the valve is being closed and thus reducing the
concussion; and recesses made in its periphery to receive metallic or other suitable
material as packing to make it air-tight. The valve G and valve seat H are
shewn in this figure of the ordinary circular form, the seat H being cast in one
with the body of the valve. Around the crown of the valve G is fitted a circular
ring L' of any suitable elastic substance to assist in arresting concussion when the
valve is used for hydraulic and other purposes. C space to admit of piston's lift
on opening valve.
In Fig. 5 is shewn an ordinary plug or stop tap body fitted with a modified form of
my invention. The valve-spindle B, handle A and segment valve G with cylinder
or cover E to be cast separate or secured to one another in any suitable manner
with or without stuffing box for spindle. The spindle B is fitted with an elastic
sleeve-of-suitable-material and section as described with reference to Fig. 1. The
spindle B is made with a conical point which fits into and works on the upper
end of an adjusting screw H' fitted underneath the valve body. The valve is shewn
to work circularly and actuated by the spindle B and its lever and handle A or by

page_text: other motive action; but this may be easily arranged and made to work horizontally
or vertically to suit the requirements of the user.
In Figs. 7 and 8 are shewn a stop tap body or such like body in which the
valve G is arranged to work horizontally, and the spindle B is fitted with a stuffing
box S and glands in lieu of the leather or other substance C in Fig. 1. The valve.
seat H is made of any suitable shape and faced or not faced with leather, india
rubber or other elastic material. The cover D is made with solid top, and the
material as at F used for resisting concussion is made of circular or other form to
fit the bottom of D and held in such position by a vertically arranged set pin S¹
with suitable device for keeping it in a horizontal plane.
In Figs. 9 and 10 the cover D is shewn of solid section and may be either
screwed to the top of the valve body or connected thereto in any other suitable
manner. The valve G is arranged to work circularly and the concussion resisting
piece F is held in position by two pins or points p and p' cast in the centre (or
otherwise) of the cover D or bottom of the valve body, p being in the cover and
pl in the bottom of the valve body.
In some cases of their manufacture I connect a spring to the valve or its spindle
for self closing it when being in use.
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 :-
1. An improved stop valve, in which a hollow elastic sleeve is used, the
compression of which relieves any excessive pressure and prevents or minimises
shock on opening or closing the valve suddenly, substantially as shewn and
described.
2. An improved stop valve in which an elastic diaphragm or the like is used.
covering a concavity, the compression of which diaphragm relieves any excessive
pressure and prevents or minimises shock on opening or closing the valve suddenly,
substantially as shewn and described.
3. An improved stop valve in which an annular tube or other section of elastic
material is used, the compression of which tube relieves any excessive pressure.
and prevents or minimises shock on opening or closing the valve suddenly,
substantially as shewn and described.
4. An improved stop valve having a hollow chamber above the valve and forming
part of the valve stem, substantially as shewn and described.
5. An improved stop valve constructed and operating substantially as shewn and
described with reference to Figs. 1 & 2.
6. An improved stop valve constructed and operating substantially as shewn and.
described with reference to Figs. 3 and 4.
7. An improved stop valve constructed and operating substantially as shewn and.
described with reference to Figs. 5 and 6.
8. An improved stop valve constructed and operating substantially as shewn and
described with reference to Figs. 7 and 8.
9. An improved stop valve constructed and operating substantially
described with reference to Figs. 9 and 10.
as shewn and
10. The use of anything compressive which may consist of one or more pieces.
and of any most suitable shape or section placed within the valve body (of any
class valve) and in the most suitable position within the valve body, to effect or
arrest concussion in the liquid for which the valve may be required especially that
liquid subjected to high pressure.