IMPROVEMENTS IN VALVE APPARATUS FOR CONTROLLING THE FLOW OF FLUID
Year: 1884

page_text: I, ALFRED GEORGE BROOKES of 55 Chancery Lane in the County of Middlesex
Fellow of the Institute of Patent Agents do hereby declare the nature of my
invention for IMPROVEMENTS IN VALVE APPARATUS FOR CONTROLLING THE FLOW
OF FLUID to be as follows:-
This invention relates to a globe valve of that class in which the partition or
diaphragm separating the inlet and outlet passages is provided with one or more
ports or openings, and the valve has corresponding openings which may, by a
sliding rotary movement of the valve, be brought into, or moved from coincidence
with the said ports of the seat to permit or arrest the flow of the fluid. The
valve stem is provided with a flange or shoulder working on a seat at the inner
end of the valve stem socket, and the connection between the part of the valve
stem provided with the said shoulder, and the valve, is such that the said shoulder
and valve may be pressed in opposite directions against their corresponding seats,
by a spring interposed between them, as well as by the pressure of the fluid, the
flow of which the valve is to control.
When a valve of such construction of considerable area is employed, the
pressure of the fluid upon it when closed is very considerable thus causing great
friction between it and its seat and making it very difficult to move the valve.
The present invention has for one of its objects to overcome this difficulty by
providing means for relieving the pressure before the valve is moved.
In register valves as heretofore constructed the face of the valve is ground to fit
accuaretly upon the seat with such tightness that it is exceedingly difficult for any
matter to get between the wearing surfaces to lubricate them, so that they are
liable in time to become worn so as to no longer fit accurately.
Another object of this invention is to obviate this difficulty by reducing the
area of the contact or wearing surface of the valve on its seat, thereby enabling it
to be more easily ground, and also permitting the lubricating material to have
access to the wearing surface.

page_text: The invention consists in a valve having a seat provided with ports, and a main
valve controlling the said ports and itself provided with relief ports, combined
with a secondary valve controlling the said relief ports, and actuating mechanism
for the said main and secondary valves whereby the latter is operated to relieve
the pressure on the main valve prior to the movement of the said main valve.
Also in a valve seat, a main valve provided with relief ports seated thereon, and
a secondary valve, combined with the valve stem, having a shoulder seated at the
end of its socket, the said valve stem being connected with the secondary valve to
move it positively, and the main valve being engaged after the secondary valve is
moved over the relief ports of the said main valve.
Also in a valve seat and main valve thereon provided with relief ports and
actuating projections, combined with a secondary valve seated on the main valve
and controlling the relief ports thereof, and the valve stem provided with arms
connected with the secondary valve and adapted to engage the actuating projections
of the main valve.
Also in a valve seat, main valve thereon and secondary valve seated on the main
valve, combined with mechanism for actuating the said valves, and a stopping
device for the main valve whereby it is positively stopped in a definite position
relative to the ports controlled by it.
Also in a valve seat, and main and secondary valves, combined with the valve
stem, having a projection or shoulder seated upon its socket, and the spring
whereby both the said valves and the said shoulder are pressed against their
respective seats.
Also in a valve stem, provided with a shoulder or projection seated at the end
of its socket and with valve actuating arms, combined with a valve longitudinally
movable, the said stem provided with lugs or projections engaged by the said
arms and operated thereby on a seat opposite to that of the shoulder of the
valve stem.
Also in a register valve having a ported seat, combined with the valve proper,
having corresponding port openings, and pockets or recesses in the wearing face of
the valve between the said port openings.
Also in a ported valve-seat and valve having corresponding ports, and having its
periphery notched adjacent to the said ports.
Also in a valve-seat and valve combined with the valve-stem, having a shoulder
and recessed hood, and a spring enclosed in the said hood.
Dated this twenty first day of January 1884.

page_text: I ALFRED GEORGE BROOKES of 55 Chancery Lane in the County of Middlesex,.
Fellow of the Institute of Patent Agents do hereby declare the nature of
invention for IMPROVEMENTS IN VALVE APPARATUS FOR CONTROLLING THE FLOW
OF FLUID 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 a globe valve of that class in which the partition or
diaphragm separating the inlet and outlet passages is provided with one or more
ports or openings, and the valve has corresponding openings which may, by a
sliding rotary movement of the valve, be brought into, or moved from coincidence
with the said ports of the seat to permit or arrest the flow of the fluid.
The valve stem is provided with a flange or shoulder working on a seat at the
inner end of the valve stem socket, and the connection between the part of the
valve stem provided with the said shoulder, and the valve, such that the said
shoulder and valve may be pressed in opposite directions against their corresponding
seats, by a spring interposed between them, as well as by the pressure of the fluid,
the flow of which the valve is to control.
When a valve of such construction of considerable area is employed, the
pressure of the fluid upon it when closed is very considerable, thus causing great
friction between it and its seat, and making it very difficult to move the valve.
The present invention has for one of its objects to overcome this difficulty by
providing means for relieving the pressure before the valve is moved.
In register valves as heretofore constructed the face of the valve is ground to fit
accurately upon the seat with such tightness that it is exceedingly difficult for any
matter to get between the wearing surfaces to lubricate them, so that they are
liable in time to become worn so as to no longer fit accurately.
Another object of this invention is to obviate this difficulty by reducing the area.
of the contact, or wearing surface, of the valve on its seat, thereby enabling it to
be more easily ground, and also permitting the lubricating material to have access
to the wearing surface.
The invention consists in a valve having a seat provided with ports, and a main
valve controlling the said ports and itself provided with relief ports, combined
with a secondary valve controlling the said relief ports, and actuating mechanism
for the said main and secondary valves whereby the latter is operated to relieve
the pressure on the main valve prior to the movement of the said main valve.
Also, in a valve seat, a main valve provided with relief ports seated thereon and
a secondary valve, combined with the valve stem having a shoulder seated at the
end of its socket, the said valve stem being connected with the secondary valve
to move it positively, and the main valve being engaged after the secondary valve
is moved over the relief ports of the said main valve.
Also in a valve seat and main valve thereon provided with relief ports and
actuating projections, combined with a secondary valve seated on the main valve
and controlling the relief ports thereof, and the valve stem provided with
arms connected with the secondary valve and adapted to engage the actuating
projections of the main valve.
Also in a valve seat, main valve thereon and secondary valve seated on the main
valve, combined with mechanism for actuating the said valves, and a stopping
device for the main valve whereby it is positively stopped in a definite position
relative to the ports controlled by it.
Also in a valve seat, and main and secondary valves, combined with the valve
stem, having a projection or shoulder seated upon its socket, and the spring whereby
both the said valve and the said shoulder are pressed against their respective seats.

page_text: Also in a valve stem provided with a shoulder or projection seated at the end of
its socket, and with valve actuating arms, combined with a valve longitudinally
movable on the said stem provided with lugs or projections engaged by the said
arms and operated thereby on a seat opposite to that of the shoulder of the
valve stem.
Also in a register valve, having a ported seat, combined with the valve proper
having corresponding port openings and pockets or recesses in the wearing face of
the valve between the said port openings.
Also in a ported valve seat and valve having corresponding ports and having its
periphery notched adjacent to the said ports.
::
Also in a valve-seat and valve combined with the valve stem having a shoulder
and recessed hood, and a spring enclosed in the said hood.
Figure 1, is a horizontal section through the upper or inlet portion of a valve
embodying this invention.
Figure 2, a vertical section thereof on line X-X Fig. 1.
Figure 3, a plan view of the top of the valve showing its bonnet and the end of
the valve stem and the actuating lever or handle therefor.
Figure 4, a plan view of the valve stem detached.
Figure 5, is a longitudinal section showing the construction of a small sized
valve embodying this invention.
•
Figure 6, a plan view thereof with the cap or bonnet and valve stem,
removed.
Figure 7, a side elevation of the valve proper and a portion of its stem, and
Figure 8, a face view of the valve proper.
The valve and casing A Figures 1 and 2, is provided with an inlet opening a in
its upper part and an outlet opening b in its lower part separated by a partition c,
having a face or seat c' of suitable metal, provided with main ports or openings d
of somewhat less than half its area, controlled by the main valve e having a series
of main openings f corresponding in size and shape with the said openings d so
that by the rotary sliding movement of the valve e on the seat c¹ the said openings f
may be brought into coincidence with the ports d to permit the fluid to flow, or the
solid or unported portion of the valve e may be brought over the said ports d to
arrest the flow of the fluid.
The said valve e is also provided with a series of small secondary or relief ports
or openings h which when the said main valve is closed, stand over the ports d as
shown in Figure 2 in position to permit the fluid to pass from the inlet to the
outlet opening of the valve, if the said openings h are uncovered.
These openings h are controlled by a secondary or auxiliary valve i having much
less area to be pressed upon by the fluid above it than the main valve e the said
secondary valve covering the openings h when desired to wholly close the valve and
totally prevent the passage of fluid through it.
The valve stem k passing through the tubular socket m in the cap or bonnet n
of the valve, has a shoulder or flange fitted to a seat 3, at the end of the said
socket m and is provided with arms k engaging lugs or ears i¹ on the secondary
valve i so that the said valve i is positively moved by the said stem, which with
its handle or lever, constitutes the valve actuating mechanism.
The end of the valve stem passes into openings at the centre of the main and
secondary valves, and thus serves as a spindle for their rotary movement although
the said valves are free to move longitudinally on the said stem, the lugs i¹ being
long enough to permit a considerable longitudinal movement without disengagement
from the arms k². A spring m¹ interposed between the valve i and shoulder k¹
of the valve-stem tends to press the main and secondary valves, and the said
shoulder to their respective seats, and the lugs ¹ are shown as provided with
pins to prevent the spring m¹ from throwing the said valve i off from its stem
in case the said stem, valve, and spring are detached from the other parts of the
valve.

page_text: The valve stem is provided with a tubular hood or sleeve enclosing the
spring m¹.
The ends of the arms k² of the valve stem project between upright actuating
lugs or projections e¹ e², on the main valve e so that after the valve stem has moved
the secondary valve i sufficiently to uncover the relief ports h and thus reduce the
pressure on the main valve, the said arms k² will engage the main valve by the
lugs e and turn it on its seat to uncover the main ports d and open the valve.
In the return movement the secondary valve i will usually be first moved to
cover the ports h after which the projections e2 of the main valve will be engaged
by the arms of the valve stem, to close the said main valve.
The movement of the main valve in either direction is limited by the stop
projection e³ upon the said valve engaging stops e, connected with the main
portion A. of the valve, so that in case the friction between the valves i and e
should be greater than that between the latter and its seat c¹, the said main valve é
would not be carried beyond the proper point.
The valve stem k is provided with an actuating lever o having a foot, p on the
upper surface of the bonnet n of the valve, engaged by a stopping device, r
limiting its movement in either direction when the valve has been properly opened
and closed.
The upper end of the socket m of the valve stem may also be recessed as shown
at 5, and the hub of the lever o provided with a projection 6, which by its engage-
ment with the shoulders formed at the end of the said recess 5 will properly limit
the movement of the valve stem.
It will be seen that the secondary valve may itself engage the main valve at the
end of its movement thereon instead of having the arms ³ of the valve stem
engage the said main valve, the essential feature of this part of the invention being
that there is sufficient lost motion in the connection between the main valve and
the secondary valve and stem to permit the said secondary valve to open or close
the relief ports in the main valve before the latter is positively engaged and
moved.
The pressure on the secondary valve is comparatively small owing to its small
area, so that it can be easily moved, and when thus moved the pressure on the
main valve will be reduced, and in most cases the pressure will be nearly equalized
above and below it, so that it will move with perfect freedom.
The herein described construction affords a gradual opening for the passage of
fluid thus rendering it desirable as a throttle valve for steam-engines.
The means employed for connecting the valve stem and valves is simple and
efficient, and may be advantageously for valves of smaller size, in which the relief-
ports and secondary valve are omitted.
Figures 5 to 8 illustrate the construction which may be conveniently adopted for
valves of small size and also show more clearly the construction of the under or
contacting face of the valve proper e.
The face of the valve proper that bears on the seat is provided with a series.of
pockets or recesses f² of the same size and shape as the ports in the valve scat,
thus reducing the actual contact or wearing surface of the valve to a band lying
around the edge of the said recesses.
At the periphery of the valve adjacent to the ports f thereof its under face is
also recessed as shown at f³, thus enabling the fluid passing through the valve
to have access to the portion of its wearing face underlying the periphery of the
valve proper enabling this portion to be lubricated by the said fluid as the valve
is opened and closed.
In Figures 5 and 6, the valve case A is provided with a stop groove e³ and after
the valve is properly ground to its seat it is provided with a stop pin or projection e³,
which by its engagement with the end of the groove e arrests the movement of
the valve in the proper position to register correctly with the ports of the valve seat.
The valve is provided with a tubular central hub f having one or more
projections fentering corresponding notches in a tubular hood or sleeve k³ of

page_text: the valve stem the said hood and hub f* receiving between them the spring m
by which the valve proper and shoulder ¹ of the valve stem are pressed to their
respective seats in the absence of fluid pressure in the valve.
The motion may be transmitted from the valve stem to the valve by the engaging
projections and notches f'k, instead of the arms 2 in those valves in which the
resistance to movement on the seat is small..
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. The valve seat provided with ports and the main valve controlling the said
ports, and itself provided with relief-ports, combined with the secondary valve
controlling the said relief-ports, and the actuating mechanism for the said main and
secondary valves whereby the latter is operated to relieve the pressure on the main
valve, prior to the movement of the said main valve, substantially as described.
2. The valve-seat, the main valve provided with relief-ports seated thereon and
the secondary valve, combined with the valve stem, having a shoulder seated at
the end of its socket, the said valve stem being connected with the secondary valve
to move it positively and the main valve being engaged after the secondary valve
is moved over the relief-ports of the said main valve, substantially as and for the
purpose described.
3. The valve-seat and main valve thereon, provided with relief-ports and
actuating projections, combined with the secondary valve seated on the main valve,
and controlling the relief-ports thereof, and the valve stem, provided with arms
connected with the secondary valve, and adapted to engage the actuating projections
of the main valve substantially as and for the purpose described.
4. The valve-seat, the main valve thereon, and secondary valve seated on the
main valve, combined with mechanism for actuating the said valves as described
and a stopping device for the main valve, whereby it is positively stopped in
a definite position relative to the ports controlled by it, substantially as described.
5, The valve-seat and main and secondary valves, combined with the valve stem
having a projection or shoulder seated upon its socket and the spring whereby both
the said valves and the said shoulder are pressed against their respective seats
substantially as described.
6. The valve stem, provided with a shoulder or projection seated at the end of
its socket, and with valve actuating arms, combined with the valve longitudinally
movable on the said stem, and provided with lugs or projections engaged by the
shoulder of the said arms, and operated thereby on a seat opposite to that of the
valve stem, substantially as described.
7. In a register valve, the combination with the ported seat, of the valve proper,
having corresponding port-openings, and pockets or recesses in the wearing face of
the valve between the said port-openings substantially as and for the purpose set
forth.
8 The ported valve-seat and valve having corresponding ports, and having its
periphery notched adjacent to the said ports, substantially as and for the purpose
described.
9. The valve-seat and valve having a recessed hub, combined with the valve
stem having a shoulder and recessed hood and a spring inclosed in the said hub and
hood which are engaged with one another, substantially as described.
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