Year: 1894

page_text: Date of Application, 25th Aug., 1894
Complete Specification Left, 27th May, 1895-Accepted, 29th June, 1895
I, HENRY BENJAMIN MERTON, of 3 Palace Houses, Bayswater Hill, in the
County of Middlesex, Gentleman, do hereby declare the nature of this invention
to be as follows:-
My invention relates to improvements in taps and valves and has for its object
to provide an improved construction of tap or valve wherein the seat and valve
face shall be subjected to an automatic grinding or facing action each time the tap
or valve is closed.
The chief feature of my improved tap or valve is that the valve disc is adapted
to be rotated automatically by the issuing fluid, such rotation continuing so long
as the valve or tap is open and until arrested by the pressure of the valve on its
seat when closed. The momentum acquired by the rotating disc is sufficient
to produce a grinding or facing action on the valve seat. at the moment the
disc makes contact therewith when the valve or tap, is being closed, which action
ensures a good fluid tight contact being always maintained between the seat and
the valve disc.
I construct a tap or valve the valve disc of which is not secured to the valve-
spindle but is merely guided in any convenient manner by the said spindle or
otherwise in its vertical movements, so as to be free to rotate independently of the
spindle, and I provide the said valve disc on its circumference with slanting
vanes or ribs for a purpose hereafter described. These vanes or ribs constitute
the chief constructional feature of my improved tap or valve. I preferably so
construct the casing of the valve or tap that the valve dise is received in a
cylindrical part or well which is a little larger in diameter than the disc with its
ribs or vanes.
The action of the valve is as follows: that is to say, when the valve spindle is
raised the pressure of the water or other fluid lifts the valve disc off its seat
and at the same time the fluid rushing past the valve-disc and impinging on the
aforesaid vanes on its circumference causes it to rotate at a speed depending on the
velocity of the issuing fluid; when closing the tap or valve, the rotation will
continue till the disc is just touching its seat and even for some little time after it
bas touched owing to the acquired momentum. The disc will thus effectually
grind and scour the valve seat each time the valve or tap is closed. I may employ
any suitable metal or other seating ring or in small taps the seating ring may be
formed by the body of the casing.
Dated this 25th day of August 1894.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: I, HENRY BENJAMIN - MERTON, of 3 Palace, Houses, Bayswater Hill, in the
County of Middlesex, 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 has for its object an improved tap or valve wherein the seat and
the face of the valve proper shall be subjected to an automatic grinding or facing
action each time the tap or valve is closed.
The chief feature of my improved tap or valve is that the valve proper, which is
a disc, is adapted to be rotated automatically by the issuing fluid, such rotation
continuing as long as the valve or tap is open and until arrested by the pressure, of
the valve on its seat when closed. The momentum acquired by the rotating disc
is sufficient to produce a grinding or facing action on the valve seat at the moment
the disc makes contact therewith when the valve or tap, is being closed, which
action ensures a good fluid-tight contact between the seat and the valve-disc.
In order that my invention may be clearly understood I will now describe the
same with reference to the accompanying drawings, in which,
"Figure 1 is a central longitudinal section of a tap constructed according to my
invention.
Figure 2 is an elevation of the valve-disc detached.
Figure 3 is a section similar to Figure 1, but showing a modification to be
hereinafter described.
A is the valve-disc; B is the valve-spindle. The valve spindle B is not secured
to the valve-disc A but its end, B! is constructed to. project into a central
depression A in the upper face of the said disc.
"By this means the valve-disc is guided in its vertical movement by the valve
spindle but is free to rotate independently of the spindle. The valve-disc A is
provided on its circumference with inclined vanes or ribs A³ for a purpose
hereinafter described.
I preferably provide in the valve casing a cylindrical well or chamber C to
receive the disc A; the said well is a little larger in diameter than the said disc A
with its ribs or vanes. The casing is furnished with a cap D having a tubular
screw threaded extension D₁ through which the screw-threaded valve spindle
passes. The said extension D' serves to limit the lift of the valve-disc A and
thereby prevents the said disc from leaving the chamber or well C even if the
valve-spindle B be removed.
一
The action of the valve is as follows: that is to say, when the valve spindle B
is raised by rotating the same the pressure of the water or other fluid lifts, the
valve-disc A from its seat C and at the same time the fluid rushing past the valve-
dise and impinging on the vanes A' A on its circumference causes it to rotate at.a
speed depending on the velocity of the issuing fluid; the rotation will continue
until, when closing the valve, the disc just touches its seat and even for some.little.
time after it has touched owing to the acquired momentum of the disc. The
disc will thus effectually grind and scour the valve-seat each time the valve or tap
is closed.
According to the modification of my invention illustrated in Figure 3 I secure
to the end of the valve spindle B a disc B of the same diameter as the valve-
dise A and likewise provided with vanes or ribs similar to those on the disc A but
inclined in the opposite direction as shown in the drawing. The disc B2 is provided
on its under side with a central projection or pin which fits the recess A¹ before-
mentioned in the valve-disc and thereby forms a pivot about which the said valve-
disc turns. The said pin is of such a length that the valve disc A is held out of

page_text: contact with the disc B. This is necessary otherwise the friction of the one disc
on the other would interfere with the rotation of the valve-disc. The object of
the disc B³ with its vanes inclined in the opposite direction to those on the valve-
disc is to impede the passage of the fluid and by the reaction to increase the
rotating effect of the fluid on the valve-disc and thereby improve the scouring
action of the said disc on the seat.
I may employ any suitable metal or other seating ring separate from the casing.
In small taps the seat may be formed in the body of the casing as shown in the
drawing.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
-
1. A tap or valve having a valve-disc free to rotate independently of the valve
spindle and provided on its circumference with inclined ribs or vanes, substantially
as, and for the purpose, described.
2. A tap or valve constructed substantially as described with reference to
Figures 1 and 2 or to Figure 3 of the accompanying drawings.
Dated this 25th day of May 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.