AN IMPROVED PUMP VALVE
Year: 1885

page_text: I JAMES JOHN TYLER, of 4 Park Terrace, Devons Road, Bromley by Bow,
London, Marine Engineer, do hereby declare the nature of the said invention for
"AN IMPROVED PUMP VALVE" to be as follows:-
This invention relates to an improved pump valve specially adapted for marine
engine circulating pumps in which the valve operates in a horizontal direction.
In carrying out my invention I construct the valve in two parts sliding one
upon the other; one of the said parts which forms the valve, properly so called
consists of a cylindrical case or box having one of its ends open and a flange round
the opposite or closed end which flange forms the face of the valve. In the
cylindrical sides of the case are formed a number of openings forming the ports of
the valve. The said sides are also provided with longitudinal slots or openings
and a central opening is formed at the closed end of the case or box for the
purpose hereinafter described.
The other part of the valve which constitutes the seat consists of an open
cylinder having at one end a flange of larger diameter than the herein before
described valve; the said cylinder which constitutes the seat of the valve is
connected at its inner sides by a bridge with a circular central plate through the
centre of which an opening is left, the bridge in this cylinder or so called valve
seat corresponding with the longitudinal slots or openings in the so called valve.
Through the opening in the end of the so called valve I pass a stud or stem which
is suitably fixed therein and passes loosely through the central opening in the
hereinbefore described bridge or plate. The other end of the stud or stem is
provided with a flanged nut or plate and between the two said plates I place a
suitable spring preferably of phosphor bronse. The so called valve seat is suitably
attached to the pump chamber or bucket.
The operation is as follows
On the inward stroke of the pump the pressure of the water on the inner case
or box so called, the valve will cause it to slide forward off the seat carrying the
ports or slots out of the outer case or so called seat thereby allowing free escape
for the water at the same time compressing the spring; on the completion of the
inward stroke the spring will force back the sliding cylinder and again cover the
ports and draw the valve face back on to the seat ready for the return stroke.
Driss C

page_text: By this construction the use of india rubber is entirely dispensed with; the risk
of the valve breaking down or becoming choked which has hitherto so frequently
happened with this class of pump is reduced to a minimum and with the large
area of wearing surface, wear and tear of the parts is considerably lessened and
the spring will always maintain a tension on the valve and allow the valve to
open only just sufficiently to clear itself of the water being used at any time:
I JAMES JOHN TYLER, of 4 Park Terrace, Devons Road, Bromley by Bow
London, Marine Engineer, do hereby declare the nature of the said invention for
"AN IMPROVED PUMP VALVE" 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 an improved pump valve specially adapted for marine
engine circulating pumps in which the valve operates in a horizontal direction:
In carrying out my invention I construct the valve in two parts sliding one
upon the other; one of the said parts which forms the valve properly so called
consists of a cylindrical case or box having one of its ends open and a Hange round
the opposite or closed end which flange forms the face of the valve. In the
cylindrical sides of the case are formed a number of openings forming the ports of
the valve. The said sides are also provided with longitudinal slots or openings and
a central opening is formed at the closed end of the case or box for the purpose
hereinafter described.
The other part of the valve which constitutes the seat consists of an open
cylinder having at one end a flange of larger diameter than the hereinbefore
described valve; the said cylinder which constitutes the seat of the valve is
provided with a bridge piece connected to the inside thereof and having a circular
central plate through the centre of which an opening is left, the bridge in this
cylinder or so called valve seat corresponding with the longitudinal slots or openings
in the so called valve. Through the opening in the end of the so called valve
I pass a stud or stem which is suitably fixed therein and passes loosely through
the central opening in the hereinbefore described bridge or plate. The other end
of the stud or stem is provided with a flanged nut or plate, and between the two
said plates I place a suitable spring preferably of phosphor bronze.
The so called valve seat is suitably attached to the pump chamber or bucket.

page_text: In order to enable my invention to be fully understood I will proceed to
describe the same by reference to the accompanying drawing in which figure 1
represents an elevation of a pump valve constructed according to my invention and
in which the so called valve is placed within the cylinder forming the valve seat
the valve being shewn fitted in a portion of the wall of the pump chamber or
-bucket of a circulating pump and working in a horizontal direction.
Figure 2 represents a central vertical section of the same the valve being shewn
partly open; Figure 3 is a similar view to figure 2 but shewing the so called valve
arranged to work over the outside of the cylinder forming the valve seat.—Similar
letters of reference indicate similar or corresponding parts throughout the drawing.
Referring to figures 1 and 2, a, and b, represent the two parts of the pump
valve (which can be used either as an inlet or outlet valve) the part a forming the
valve proper or moving part, and the part b, the seating for the said part a, the
valve a, fitting and sliding within the seating b. The part a is formed as shewn
of a cylindrical case or box having one of its ends open and the other end closed;
c. is the flange round the closed end of the valve, one side c¹, of which flange forms
the face of the valve a; d, are the openings in the cylindrical sides of the case a,
close to the flange c, the said openings & forming the ports of the valve to allow of
the passage of the water being pumped.
a², are the longitudinal slots or openings with which the sides of the case a, is
provided the said slots or openings a², being diametrically opposite to each other
and a¹, is the central opening formed at the closed end of the case or box a.
The
other part of the valve which constitutes the seat consists of a hollow cylinder
open at both ends as shewn in figure 1; e, is the flange provided at one end of the
seating b, the said flange being of larger diameter than the flange c, on the valve a,
and serving as a bearing for the valve face c', when the valve is closed; f, is the
bridge piece formed on the seating b, the said bridge piece being connected with
the inside of the cylinder b, at two diametrically opposite points as shewn. The
bridge piece f, is enlarged at the centre, forming a circular central plate and a
boss af, is the opening in the centre of the said plate and boss.
The opposite ends of the bridge piece f, correspond with and extend through
the slots a², in the valve cylinder a; g is the stud or stem passing through the
hole or opening a¹, in the closed end of the valve a; g', is a collar formed on the
stud or stem g, and which by means of a nut g², serves to fix the stud or stem g, to
the closed end of the valve a. The stud g, passes loosely through the hole fi, in
the bridge piece f; b³, represents a screw thread formed on the outer end of the
stud or stem g, and h is the flanged nut or plate screwed over the same as shewn;
i is the spring preferably of phosphor bronze placed between the circular central
plate of the bridge piece f and the flanged nut h; the said spring i serves to keep
the valve a, tightly against the seating b until it is acted upon by the plunger or
bucket of the circulating pump. A represents a portion of the wall of the pump
chamber or bucket to which the seating b, is suitably attached.
The operation of my improved pump valve when used as an outlet valve is as
follows:
On the inward stroke of the pump a pressure of water is exerted on the inner
face of the closed end of the valve a, causing it to slide away from the seat and
carry the ports or slots d, out of the seating b, thereby allowing free escape for the
water at the same time compressing the spring i; on the completion of the inward
stroke the spring i, will force back the sliding valve a, into the seating b, whereby
the ports d, will be again covered and the valve face c', drawn back onto the
seating b, ready for the return stroke of the pump.
In the pump valve shewn in figure 3 in which the valve proper a is arranged
to slide on the outside of the seating b, instead of inside as hereinbefore described
and shewn in figures 1 and 2 the ports d, are formed in the seating b. The
seating b is fastened to the wall A, of the pump chamber or bucket in any suitable
manner such as by screws j, as shewn, the opening in the wall A, being of such
dimensions as to leave an annular space k, round the valve a, and seating b when

page_text: fixed in place. This annular space k, serves to allow of the egress of the water
which when the valve is pressed open as shown in the drawing is forced through
the valve in the direction shewn by the arrows.
The face c', of the valve a is formed by the edge of the open end of the said
valve and bears against the inner side of the flange e, (when the valve is closed) of
the seating b, The other parts of the valve videlicet, the bridge piece f, spring i..
flanged nut h, stud or stem g, and nut g, are the same as those shewn in figures 1
and 2. In the valve a, the longitudinal slots a², are not required. The action of
the valve is substantially the same as that described with reference to figures 1
and 2.
By my improved construction of pump valve the use of india rubber is entirely
dispensed with; the risk of the valve breaking down or becoming choked which
has hitherto so frequently happened with this class of pump is reduced to a
minimum and with the large area of wearing surface, wear and tear of the parts is
considerably lessened and the spring will always maintain a tension on the valve
and allow the valve to open ouly just sufficiently to clear itself of the water being
used at any time.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1. In a pump valve such as those herein described the employment of two
cylindrical cases or trunks sliding one within the other one of the said cases
forming the valve proper and the other the seating for the same and suitable ports
being provided in one of the said cases substantially as and for the purpose
herein before described and represented in the accompanying drawing..
2. In a pump valve the combination with the cylindrical cases or trunks herein
described of a spring arranged to operate between the two ports substantially in
the manner and for the purpose herein before described and represented in the
accompanying drawing.
3. The improved pump valves herein before described and represented in the
accompanying drawing.
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