IMPROVEMENTS IN VALVES
Year: 1886

page_text: Date of Application, 16th July, 1886.
Complete Left, 16th Apr., 1887.
Complete Accepted, 17th May, 1887.
We, TOM NORMAN, 514 Effingham Road, Attercliffe, Sheffield, in the County of
York, Engineer, and HENRY SAMUEL MOTTERAM, 43 Baltic Road, Attercliffe
Sheffield aforesaid, do hereby declare the nature of our said invention for
IMPROVEMENTS IN VALVES to be as follows:-
Our invention is applicable to the valves of Pumps for liquids, air pumps, and valves
for other like purposes, and also for Taps.
In carrying out our invention in its application to Valves for pumps, for an
example, we make the valve of any suitable metal, preferably gun metal, hollowed out
on its underside, and provided with a boss or short tubular projection centrally
situated on its top side. The shape of the body is circular or disc-shaped, and the
recess underneath is filled with a block of rubber, or of other suitable elastic material,
the face of which projects from the metal.
The seating of the Valve we prefer to groove with one or more annular grooves
made round the valve opening, in which are inserted rings of rubber or other suitable
elastic material projecting from the face of the seating, so that when the valve is
closed, the rubber face lay upon the rubber ring or rings which project above the
valve seat.
An adjustable guide pin fitting loosely into the tubular boss or projection, and
attached to the pump barrel, or other fixed part of the apparatus, controls the amount
of movement of the valve; other equivalent means may be used for this purpose.
By this arrangement either the rubber block in the valve, or the rubber rings in the
seating, can be readily removed and replaced when desired."
The valve as before described, may be used with a plain seating, when required,
such as in the case of its application to an old pump where it would be difficult to
remove the old seating, or to groove it in its place.
Our invention with slight modifications in the minor details is applicable to Screw-
down Taps, and similar Taps.
ROBT. F. DRURY,
Agent for the Applicants.

page_text: similar valves, it is also applicable to taps.
The annexed sheet of drawings illustrates a pump valve made according to our
invention.
Fig. 1, is a sectional elevation of a valve and seating.
Fig. 2, is a plan of the seating.
Fig. 3, shows the face of the valve.
In carrying out our invention in its application to valves of pumps such as
illustrated in the drawings, we make the valve A of any suitable metal, preferably
gun metal, hollowed or recessed on the under or face side, and provided with a central
guide pin B, and a stop pieco C.
We fill the recess with a block of rubber, or other suitable elastic material
marked D, the face of which must project from the metal as shown.
The seating E, is also provided with one or more grooves or annular recesses,
preferably concentric with the opening, in which are inserted rings of rubber or other
clastic material F, projecting from the face of the seating, so that when the valve iş
closed, the rubber face D, lays upon the rubber ring F, or rings as the case may be.
The Valve is kept in a vertical position by means of the pin B, taking into a guide
bar G, in the usual manner, but any other arrangement may be used to accomplish
this purpose.
The stop piece C is to form a stop or abutment against which the end of a screw or
other regulating device will come into contact when the desired extent of movement of
the valve is reached.
By this arrangement either the rubber block D, or the ring or rings F, can be
readily removed and replaced by others.
In its application to old pumps we may use the valve as before described, alone, as it
would in many cases be difficult to form the annular grooves to receive the rings F.
Our invention is also applicable to Taps, but in most cases the seating would be
solid with the body of the tap, and not separate as shown in the drawings.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed, we declare that what we claim is :-
The construction of a valve having an inserted block of rubber, or other suitable
elastic material (such as D,) projecting from its face, and the seating provided with
one or more projecting rings of elastic material (such as F) for the purpose specified
and substantially as hereinbefore described and illustrated.
Dat the 15th J
Ր A 1007
ROBT. F. DRURY,
Agent for the Applicants.