Improvements in Fluid Pressure Relief Valves.
Year: 1891

page_text: Date of Application, 4th Aug., 1891-Accepted, 12th Sept, 1891
COMPLETE SPECIFICATION.
[Cominunicated from abroad by THOMAS MCNEIL and JOHN MONEIL, both of
34, West Eighth Street, Cincinnati, Plumbers, and HUGH MERRIE, of
13, West Seventh Street, Cincinnati, Manufacturer, all in the County
of Hamilton, United States of America.]
Improvements in Fluid Pressure Relief Valves.
I, HENRY HARRIS LAKE of the firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings in the County of Middlesex, 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 comprises a device adapted to be located between the source of
supply of a fluid and the delivery of the same for the purpose of automatically
relieving the discharge pipe or pipes or their connections, of any unnecessary
pressure the instant the flow is shut off at the place of delivery, as hereinafter more
fully described.
In the accompanying drawing
Figure 1 is an axial section of the fluid-pressure regulator, the valve of the same
being closed.
Figure 2 is a horizontal section of the device taken on the line Z
preceding illustration.
•
.
•
Z of the
Figure 3 shows the method of applying the regulator to the ordinary water-pipes
of a building.
A and B represent a pair of communicating cylinders of unequal diameters, the
lower or smaller cylinder B, having an inlet C, while the upper cylinder A has a
cap D screwed or bolted to it the said cap being provided with a discharge or
exit E. The lower end of the small cylinder has a raised seat or other appropriate
bearing F for a disc-valve G, attached to a hollow water-way H, having near its
bottom one or more inlet-ports I I. Located above the valve G are radial arms J,
more clearly seen in Figure 2 and above these arms a disc K is placed, which
arms and disc are, preferably integral with the water-way H. L is an inverted
to expand
cupped-packing, so fitted between the arms J and disc Kas
outwardly by any upward pressure of water within the cylinder B. These parts
are duplicated for the upper cylinder, M being a series of radial arms N a solid
disc, and O a cupped packing which latter is arranged in a reverse manner to the
packing L so as to expand outwardly by any downward pressure of water within
cylinder A. Pare holes for drawing off any leakage that may occur at either of
the packings L or O. R in Figure 3 is a pipe attached to the inlet C and com-
municating with a street-main or other source of supply, and S is a pipe coupled
to the exit E and carried up through a building. T, T₁, TT, are cocks or other
connections attached to pipe S and adapted to deliver water on the different floors
or flats of said structure. When the various operative parts of the regulator are
in their normal positions, as seen in Figure 1, the valve G is closed against the
seat F and will remain in this condition until either one of the cocks T is opened.
As soon, however, as a ventage is thus afforded, for the pipe S the valve G is
instantly raised from off its seat, and water then flows into the cylinder B,
passes through the ports I I¹ into the water-way H and ascends the exit E and its
connection S.
The water then finally escapes through the open cock. When sufficient water
has been drawn off, the cock is closed, and owing to the excess of pressure that now
accumulates upon the piston ON of the larger cylinder A, the moving water-way H
is forced down until its valve G is again firmly seated on the bearing F which act

page_text: automatically cuts off all communication between the inlet R and discharge S. To
illustrate the advantage of this invention, let it be supposed that the discharge
pipe S is connected directly with the street-main and that the latter has a water
pressure within it of one hundred pounds to the square inch. Evidently, this
pressure will be communicated to the water in the pipe S and to all attachments
and connections drawing from said pipe. Hence it will be necessary to provide the
entire building with extra thick pipes capable of standing such a heavy pressure,
and any violent ❝ rain or concussion incidental to the sudden closing of one of the
cocks. But by locating the regulator between the source of supply R, and the
delivery S the latter is at once relieved of this constant strain the instant a cock is
closed, at which moment said discharge-pipe S, and its connections are simply
subjected to whatever head is due to the column of water contained within them.
Consequently, the invention will save an iminense amount of plumbing repairs
where hydrant and other pipe connections are attached to mains under a heavy
pressure. Finally, although I have shown and described my device in connection
with the ordinary water-supply of a building, yet I wish it distinctly understood that
the invention is not limited to any particular use, nor to any special location, as it
is evident the regulator may be employed for controlling the flow of gas or steam
or aeriform bodies generally.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed as communicated to me by
my foreign correspondents I declare that what I claim is:
First. A fluid-pressure regulator consisting of a pair of communicating cylinders
of unequal diameters, a pair of pistons traversing said cylinders and attached to a
moving water-way having an inlet-port, a valve carried by said water-way, a seat
for said valve to close against, an inlet communicating with the smaller cylinder,
and a discharge leading from the larger cylinder, substantially as herein
described.
Second. The combination, in a fluid-pressure regulator, of a pair of communi-
cating cylinders A. B of unequal diameters, a pair of pistons M N O, JKL
traversing said cylinders and attached to a moving water-way H having inlet
ports II a valve G carried by said water-way, a seat F for said valve to close
against, an inlet C communicating with the smaller cylinder B and a discharge E,
leading from the larger cylinder A as herein described.
Dated this 4th day of August 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.