holding
Year: 1894

page_text: Date of Application, 24th Sept., 1894
Complete Specification Left, 27th Sept., 1894-Accepted, 20th Apr.,
1895
WALTER BEVIS 8 Sloane Gardens Sloane Square S.W. Builder's Clerk do
hereby declare the nature of this invention to be as follows:-
0
A brass nose piece cast in one with arm to take stem B and lynch pin D one end
screwed for fixing to service, the underside of outlet ground to form proper seating
for rubber C.
Brass stem cast in one with socket to take the rubber C finished with sharp
edge under the outlet of nose piece A to cut the water this stem also takes the
copper ball.
India rubber "best quality soft" for shutting off; this to work slightly loose' in
socket.
I much nin fan holding stom Bin nosition
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WALTER BEVIS 8 Sloane Gardens Sloane Square S.W. Builder's Clerk 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 improvements in ball valves, and has for its object
to so construct the valve, that the washer (used for shutting off) will last a longer
period than in valves as now constructed, and to give the valve a second chance or
opportunity to shut off when the washer has become temporarily defective upon
the seating, through obstruction by grit or other substance passing through the
valve.
Also to dispense with having to fix the washer (used for shutting off) to any
part of the apparatus.
The continual action of the washer upon the seating having a detrimental effect,
sooner or later the washer becomes defective. I do not prevent this detrimental
effect by my invention, but I lengthen the period of time that the washer would
otherwise last, by having two seatings, and holding a portion of the washer in
reserve and free from the seating.
This reserved portion of the washer will only come into action upon its seating
when the washer has become worn or temporarily defective upon its ordinary
seating, and when, having shut off on its ordinary seating (under pressure), this
pressure is taken off before the water in the cistern is lowered, therefore, while one
portion of the washer is receiving wear and tear upon the seating, the reserved
portion is receiving little or no wear and tear.
In valves as now constructed the washer usually closes upon the seating when
the float is half submerged, and the washer being defective at this (through grit or
other small matter getting between the washer and the seating) the valve lets by.

page_text: The subsequent rise of water in the cistern further submerging the float, giving it
more buoyancy and pressing the washer with more force upon the seating, will in
this case, cause the washer to expand and close upon another seating, thus avoiding
an overflow of water.
The float being subsequently lowered, the water when again passing through
the valve will have a tendency to wash this grit or other matter clear of the
washer.
In accordance with my said invention, I make a concave shaped seating and a
convex shaped washer, but in this seating I form another seating projecting from
the top, therefore, I provide the washer with two separate seatings.
In making the washer I form a stem to the same and place this into a socket.
But in order that my said invention may be more readily understood and easily
carried into effect, I will proceed to describe the same with reference to the
accompanying drawings.
The drawings are sectional elevations of ball valves having my improved seating
or seatings, also my improved washer and the socket for holding the same.
A. Casing of valve.
a. Ordinary seating of washer C.
a². Seating upon which the reserved portion of washer C comes into action
when required,
B. Lever of valve with socket 6 in one piece as shewn in Fig. 1 of the drawings,
to take the washer C also to take float at other end, or, the socket 6 to be made
separate from the lever B and attached to the lever B and worked in a piston slide
inside the casing in the usual way, as now done in the Croydon pattern and other
ball valves, and as shewn in Fig. 2 and Fig. 3 of the drawings.
C. India rubber washer for shutting off.
D. Pin holding lever B.
E. Screwed end for fixing to supply pipe.
F. Water way into valve.
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. The two seatings, substantially as and for the purposes hereinbefore described
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. The two seatings, substantially as and for the purposes hereinbefore described
and shewn in the accompanying drawings.
2. The socket, substantially as and for the purpose herein before described and
shewn in the accompanying drawings.
3. The washer, substantially as and for the purposes hereinbefore described and
shewn in the accompanying drawings.
Dated this 26th day of September 1894.
WALTER BEVIS.