Improvements in Dani
Year: 1894

page_text: Date of Application, 12th Dec., 1894
Complete Specification Left, 5th Sept., 1895-Accepted, 5th Oct., 1895
Improvements in Dani
I, SAMUEL SHEARS, of 59 South Street Exeter, in the County of Devon,
England, Plumber, do hereby declare the nature of this invention to be as
follows:-
My invention relates to high pressure safety ball valves, for regulating the supply
of water to cisterns.
The first improvement consists of arranging a strainer in the mouth or inlet portion
of a suitably shaped casing, for the purpose of preventing any dirt, gravel or other
foreign matter in the pipe from entering the cistern.
Said strainer is retained in position by a screwed cap which can be easily removed
for cleaning purposes.
My second improvement is, in forming a small spindle valve in such a manner that
the force of water assists to close it.
This valve is actuated by a small lever formed upon the pivotted end of the arm
or stem which carries the ordinary copper ball, and is supported in a suitable bearing
so that it cau slide either forwardly or backwardly according to the movement of
the lever, and thus open or close the valve way, so as to regulate the inflow of
water.
My third improvement consists in providing a swivel attachment for the lever
end of the arm or stem of ball, in order to retain it in position when the india
rubber washer or cap is nearly worn through thereby preventing the water from
overflowing.
The swivel aforesaid is secured to the upper part of the valve casing by means
of a screwed pin and nut, and engages with a notch formed in the outer portion of
the ball stem, when the india rubber beneath it is sufficiently worn; the nut of the
screwed pin may also act as a regulator for said valve by binding upon the head
of the lever so as to limit the movement of the valve.
Dated this 12th day of December 1894.
W. D. ROWLINGSON,
172 Queen Victoria Street, London, E.C., Agent for the Applicant.
I, SAMUEL SHEARS, of 59 South Street, Exeter, in the County of Devon,
England, Plumber, 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 ball valves, for regulating the supply of water to
cisterns.
The first improvement consists of arranging a strainer in the mouth or inlet portion
of a suitably shaped casing for the purpose of preventing any dirt, gravel, or other
foreign matter in the main pipe, from entering the valve chamber, as it frequently

page_text: happens that small particles of grit will get between the valve and its seat, and thus
cause the valve to be inoperative.
The second improvement consists in forining a small spindle valve in such a mauner
that the force of water in the main pipe assists to close it, when the water in the
cistern is at the required level.
.
The third improvement consists in providing a regulator to act upon the ball
stem, so as to limit the movement of the valve, or if necessary cause it to be closed,
and shut off the supply of water to the cistern.
But in order that my invention may be better understood reference is made
to the accompanying sheet of drawings in which
Figure 1 illustrates an elevation and Figure 2 a sectional view of the ball valve,
whilst
Figure 3 is a separate view of the strainer.
In the drawings (A) represents a metallic casing in the mouth of which is the
strainer (B) which rests against the collar (C) and is retained in position by the
screwed cap (D). This cap also connects the tail piece (E) with the valve casing,
and can be easily removed, when the strainer requires cleaning.
(F) is the spindle valve suitably arranged within said casing, it is supported
in a tubular bearing (G) so that it can slide either forwardly or backwardly
according to the movement of the lever (H). Said lever pivotted at (I) to the
lugs (J) on the casing, and is formed upon one end of the stem (K) which
carries the ordinary copper ball. The lower portion of this lever is inserted in
a slot, in the valve spindle, so that as the stem and copper ball are raised or
lowered, the lever either closes or opens the valve way (L), by forcing the valve
either backwardly or forwardly. Said valve is provided with the ordinary india-
rubber or leather washer (M) so as to make a water-tight joint when the valve way
is closed, and when open the water escapes through the outlet (N).
It may be here explained that it is necessary to weight the copper ball according
to the pressure of water in the main service pipe, otherwise the force of water might
render the ball inoperative and keep the valve closed.
For regulating the movement of the valve, the nut (0) is screwed down upon the
pin (P), until it binds upon the head of the lever, and according to the pressure put
upon the lever so the movement of the valve is limited and for closing the valve, the
nut is screwed down tight thereby causing the lever to draw the valve inwardly until
the washer (M) rests upon the seat (Q), and retain it in that position until the lever
is again released.
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-
Firstly. The combination and arrangement with a ball valve of the strainer (B)
substantially as and for the purposes herein described and as illustrated.
Secondly. In ball valves the spindle valve (F) having a seat (Q) and operated by
a lever (H) arranged so that the pressure of water assists to close the valve way
substantially as herein described and as illustrated.
Thirdly. In ball valves the combination and arrangement with the lever (H) and
valve (F) of the regulating nut (O), substantially as and for the purposes herein
described and as illustrated.
Fourthly. In ball valves, the combination and arrangenient of the valve (F) and
lever (H) regulating uut (O) and strainer (B) substantially as and for the purposes
herein described and as illustrated.
Dated the 26th day of August 1895
W. D. ROWLINGSON,
Agent for the Applicant.