Improvements in Pressure-reducing Valves.
Year: 1898

page_text: Date of Application, 31st Des., 1898-Accepted, 18th Feb.,
1899
[Communicated from abroad by TIMOTHY JOHN KIELEY and FREDERICK THEODORE
MUELLER, both of New York, United States of America, Manufacturers]
Improvements in Pressure-reducing 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:-
My invention relates to an improved reducing valve, and more particularly
to a device of this character especially designed for use in connection with steam
heating apparatus, the object being to so construct the valve that it will
automatically out off the steam from the boiler when the pressure in the pipes
becomes too high, and open again to admit steam to the pipes when the pressure
therein falls below the desired degree With these and other ends in view, the
invention consists in certain novel features of construction and combinations of
parts, as will be hereinafter described
The accompanying drawing shows the valve partly in section and partly in
elevation
Referring to the said drawing, A represents a chamber of any desired size,
provided with the inlet B, the walls of which are preferably cast integral with
the chamber A, the end a of this inlet pipe B being olosed. To the outer end of
this pipe B is clamped or otherwise secured the steam pipe from the boiler (not
shown). To the opposite end of the chamber A 18 secured the steam pipe C
leading to the radiators or other part of the heating apparatus, in which the
pressure of the steam is to be controlled.
Below the chamber A is located a diaphragm chamber D containing a
diaphragm d, made of rubber or other suitable material, and to which is secured
the piston-rod e, the latter extending upwardly into the chamber A where it is
connected to the lower end of the valve stem f, the opening in the lower side
of the chamber A through which the piston-rod passes, being suitably packed
to prevent the leakage of steam
The chamber D is secured to the yoke or frame E, which in turn, is secured
to the chamber A, one arm of said frame being provided with a lug or projec-
tion g, to which is fulcrumed the lever F This lever passes through a slot
formed in the piston-rod e, this arrangement resulting in the raising and lowering
of the piston when the lever 18 1aised or lowered On the outer end of the lever
is a ball or weight h, the tendency of which is to keep the lever F and piston e
in their lower positions.
On the upper end of the valve stem is formed or secured the valve H--H.
seating in openings formed in the inlet pipe B, and which is raised or lowered
in accordance with the lever F and piston-rod e
To the under side of the chamber D 18 connected one end of the pipe I, the
opposite end of the latter being connected to the pipe C, and preferably at some

page_text: distance from the valve, say twenty or thuty feet, the object of this arrangement
being to bring the tiue pressure of steam in the heating apparatus to bear on
the diaphragm d In order to prevent the steam from coming in direct contact
with this diaphragm, I prefer to fill the lower half of the chamber with water,
the steam pressure in the pipe I being transmitted through the water to the
diaphragm.
The operation of the valve is as follows. If the pressure in the pipe B 18, for
instance, ten pounds, and it is desuel to keep the pressure in the pipe Cat, say
five pounds, the weight h will be so arranged on the end of the lever F that a
pressure of five pounds on the diaphragm will keep said lever, piston-rod e, and
valve II raised, thereby preventing the steam from passing out of the inlet pipe B
into the chamber A and pipe C, but should the pressure in the pipe C, fall below
five pounds, then by reason of the reduced pressure transmitted through the
pipe I to the diaphragm d, the weight will cause the lever F to drop, thereby'
loweung the valve H and allowing the steam from the pipe B to pass through
the openings into the chamber A, and pipe C, the passage of the steam con-
tinuing until the pressure in the pipe ses to five pounds, whereupon, ab
before described, the pressure will be conveyed through the pipe I to the
diaphragm d, causing the valve II to close and shut off the steam from further
entering said pipe C
It will of couise be understood that by moving the weight on the lever F,
or substituting a heavier or a lighter one, the pressure to be maintained in the
pipe C may be accordingly varied
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated
to me by my foreign correspondents, I declare that what I claim 18
1. A reducing valve consisting of a chamber formed with an inlet pipe
provided with a valve opening or openings, an outlet pipe secured to said chamber
and in which the pressure is to be reduced, a diaphragm chamber connected with
said former chamber and containing a diaphragm, a pipe connecting said
diaphragm chamber with said outlet pipe, a weighted lever, and a valve
indirectly connected with and operated by said lever, the above parts being con-
stiucted and arranged in the manner and for the purpose, substantially as
described
2 The chamber A formed with the pipe B, C, a chamber containing the
diaphragm d, pipe I, weighted lever F, and a valve H indirectly connected with
said lever, the above parts being constructed and arranged to operate in the
manner and for the purpose substantially as described
Dated this 31at day of Doomben 1900
HASELTINE, LAKE & Co,
45, Southampton Buildings, London, WC,
Agents for the Applicants