Improvements in and relating to Valves suitable for Pumps.
Year: 1892

page_text: Date of Application, 27th Oct., 1892
Complete Specification Left. 28th Aug.. 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Valves suitable for Pumps.
We, THOMAS ALFRED ADAMSON, of 27 Leadenhall Street, in the City of
London, Engineer, and ROBERT BELDAM, of 79 Mark Lane, in the City of London
aforesaid, Merchant, do hereby declare the nature of this invention to be as
follows:-
:-
This invention has reference to improvements in valves specially applicable for
air, circulating, feed, bilge, and other, pumps, the objects being to produce a simple
and inexpensive construction of valve the wear of which shall be more uniform than
usual, and which shall be specially suitable for quick-running pumps.
To this end our improved valve is so constructed or formed at its under or
suction side that an intermittent rotary motion will be imparted to the valve by
the action upon such side of fluid passing through the pump to which the valve is
applied.
According to one construction the valve consists of a sheet metal disc secured at
its centre to a tubular boss or sleeve and formed at its underside with a number of
flutes that are of gradually decreasing depth towards the centre where they merge
into the flat surface of the plate, and each of which has one or both of its edges
In a
arranged tangentially to a circle having the axis of the valve as its centre.
modified construction, the depth of each flute gradually decreases towards the outer
periphery of the valve.
Such valves are or may be loaded at the periphery to any desired extent, by
means of a ring of metal, or other suitable material applied in any convenient
manner as for example by casting, rivetting, or soldering.
Valves constructed as described may advantageously be used in conjunction with
seats formed with upwardly inclined openings and tangentially arranged bars
between such openings.
The guards for the valves may advantageously be each made with an annular
groove or chamber at its underside to contain fluid to assist in cushioning the valve
when opening.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and relating to Valves suitable for Pumps.
We, SARAH ADAMSON, of Rowlands, Mycena Road, West Combe Park,
Greenwich, in the County of Kent, Widow and Administratrix of Thomas Alfred
Adamson late of Rowlands aforesaid and ROBERT BELDAM, of 79, Mark Lane, in
the City of London, Merchant, 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 has reference to improvements in valves specially applicable for
air, circulating, feed, bilge, and other pumps, the objects being to produce a simple
and inexpensive construction of valve, specially suitable for quick-running pumps,
and the wear of which shall be more uniform than usual,
To this end the improved valve is so constructed or formed at its under or
suction side, that an intermittent rotary motion will be imparted to the valve by

page_text: the action, upon such side, of fluid passing through the pump to which the valve is
applied.
In the accompanying drawings,
Fig. 1 is a vertical section of a valve with valve seat and guard, constructed
according to this invention.
Fig. 2 is an underside view of the valve.
Fig. 3 is a side elevation thereof.
Fig. 4 is a plan of the valve seat.
Figs. 5, 6 and 7 are underside views of different forms of valves according to this
invention.
The valve shown in Figs. 1 to 4 consists of a disc A. of sheet metal; for example
copper, secured at its centre to a tubular boss or sleeve B and provided near the
outer periphery with a ring A. The boss and ring may be of any suitable
material, for example lead, or white or other metal, and may be secured to the
dise A in any convenient manner, as for example by casting rivetting or soldering.
Or the sheet metal disc A with ring A', or with boss B and ring A, may be cast
in one piece. The ring A' serves as a convenient means of strengthening the thin
disc portion of the valve, and of loading the valve to the required extent.
The valve is formed on its underside with a number of flutes C that are of
gradually decreasing depth towards the centre, where they merge into the flat
surface of the disc, and are closed at their outer ends by the portions A² of metal
forming part of the ring A' in which the outer edge of the disc A is held. Each
of the flutes C has one of its edges (C) arranged tangentially to a circle C2 having
the axis of the valve as its centre, so that the flutes instead of being radial, have a
slight inclination or lead in one direction with the result that by the action of, fluid
thereon, a movement of partial rotation will, be imparted to the valve at each lift
thereof.
D is the valve seat. It may advantageously be formed with tangentially arranged
bars E that are of considerable depth, and are inclined to the face of the valve, seat
so as to form upwardly inclined openings or passages whereby a circular or rotary
motion will be imparted to the fluid passing therethrough in such a manner as to
assist in imparting an intermittent or step by step rotary motion to the said valve.
It is not however essential with a valve having its underside constructed as described,
that the ribs should be thus inclined, as they may simply be normal to the surface
of the valve seat and be radial in the ordinary way, but it is considered.advantageous
to incline them as shown.
F is a guard that limits the lift of the valve at each suction stroke of the pump.
This guard may advantageously be made with an annular groove or chamber Fat
its underside, as shown, to contain fluid to assist in cushioning the valve when
opening.
In the modified forms of valves shown in Figs. 5 and 6, the flutes Ċ do not
extend to the edge of the dise A, but terminate within the inner edge of the
ring A, so that they merge into the flat surface of the disc at both ends.
They are deepest at their outer ends in Fig. 5, and at their inner ends in
Fig. 6.
Fig. 7 shows a further modification specially suitable for use with a valve seat of
the kind shown in Figs. 1 and 4, and in which instead of flutes, the valve is
provided on its lower, or suction side, with indentations C2, of circular form in
plan, arranged in two concentric sets, those in the outer set being larger than those
in the inner set and arranged to alternate with them in position, as shown. For
large valves there may be more than two sets of indentations.
It having been discovered since the date of the present application for Letters
Patent that a valve seat constructed with upwardly inclined openings or passages
such as hereinbefore described can be advantageously used with valves other than
those having their undersides fluted or recessed as hereinbefore described, as for
example with valves that are flat or smooth at their suction or underside, and also
that thin or sheet metal valves with central boss and outer strengthening and

page_text: loading ring, but flat or smooth at their suction or underside, may be used with
advantage with valve seats of the kind referred to an application for Letters
Patent No. 16193 of 1893, has been lodged by us and in the Specification of that
application there is described inter alia, the mode of using such a valve.seat and.
valve.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
:-
1. A pump valve formed of metal strengthened and loaded at the periphery and
having its under or suction side formed or provided with Hutes, recesses or indenta-
tions the form and arrangement of which are such that fluid flowing in contact
therewith will impart an intermittent rotary motion to the valve, substantially as
herein described.
2. The combination with a valve of the kind referred to in the preceding claim,
of a valve seat formed with upwardly inclined openings substantially as herein
described for the purpose specified.
3. The improved valves, suitable for pumps, constructed substantially as herein-
before described with reference respectively to and shown in Figs. 1 to 4 inclusive;
in Fig. 5; in Fig. 6; and in Fig. 7 of the accompanying drawings for the purpose
specified.
Dated th: not
1000
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.