Year: 1899

page_text: Date of Application, 6th Feb., 1899-Accepted, 18th Mar., 1899
Аргогод
I, JOHN HARLOW WARREN, a Citizen of the United States of America, residing at
No. 362, Cedar Avenue, in the City of Cleveland, County of Cuyahoga, and State
of Ohio, Manufacturer, 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 gauge cocks, and the objects of the invention are, first,
to preserve and protect the spring which seats the valve so that it will not be
directly exposed to the heat of the steam and water which enters the cock and
thereby caused to lose its tension and be rendered practically worthless in a com-
paratively short space of time, as occurs generally with springs confined within
the body of the cock where such direct exposure to steam and super-heated water
is unavoidable.
The second object of the invention is to prevent the disagreeable leakage which
cocks very generally are liable to have through the head of the barrel where the
valve operating stem or rod enters and when it is pressed inward and the valve is
operated to make the testings. This leakage is liable to be not only disagree-
able but, owing to the high pressures within the boiler, it frequently occurs that
it is dangerous, being spurted out with force and burning the hands and often the
face of the engineer. Both these conspicuous objections are wholly overcome in
and through my invention, and the invention therefore consists in a gauge cock of
safety construction, substantially as shown and described and particularly pointed
out in the claims.
In the accompanying drawings, Fig. 1 is a longitudinal sectional elevation of
the cock complete as equipped for service, and with the main valve closed.
Fig. 2 is a longitudinal elevation, partly in section, of the valve mechanism
alone, as hereinafter more fully described.
A represents the body or barrel of the cock, provided with a discharge nipple
which may be of any suitable and usual. construction and located in the usual
position to discharge directly downward or sideward. The central bulb or cham-
ber, 2, from which this discharge occurs has at each end a diaphragm, 3, and, 4,
respectively, and each diaphragm is provided at its centre with an open passage and
a valve seat. Outside of these diaphragms are barrel shaped extensions or ex-
tremities 5 and 6, the extremity 5 being exteriorly threaded to screw into the boiler,
as usual, and the extremity 6 adapted to receive a special construction of vaive
head, B.
This head has at least a dual purpose and function, being provided with a valve
at its inner end to engage the valve seat 7 in the diaphragm 4 when the valve
stem C is depressed or pressed inward to open main valve c, which has its seat in
diaphragm 3, and thus when said main valve is opened and the heated fluid enters
chamber, 2, it is prevented by the simultaneous closing of valve 6 from leaking
or in any way escaping into the extension 6 of the body, A, and, of course, from

page_text: being forced out the head of the barrel and scalding the engineer, as hereinbefore
referred to.
However, it will at the best occur in the interim of the unseating of the main
valve c and the seating of the auxiliary valve b that more or less water or steam
will be driven through the valve seat 7, and this may also occur by a very slight
opening of the main valve and consequent insufficient closing of the auxiliary
valve, for the two valves are so connected as to work together and the valve stem C
is screwed into head 1 more or less, and may have a comparatively loose threaded
connection therewith so as to promote perfect sealing of valve while the twe
valves are kept also in perfect and convenient adjustable relationship. A fine or a
coarse adjustment may thus be made, and more or less opening given to main
valve c, and more or less closeness to the auxiliary valve 6, the limit of play in
any event being between these valves.
Assuming then that some leakage past valve 6 will occur under certain conditions
which are apt to arise from one cause or another, and to prevent discharge of hot
water or steam endwise through the body, A, I provide the head B with alternate
annular condensing spaces b' and ribs 62, say one or more of each. The ribs or
rings 2 fit closely in the barrel, so that they are practically as tight as packing.
would make them and yet are loose enough to afford sufficient freedom for sliding
operation, and the head of valve itself fits closely and offers an immediate barrier
to the passage of fluid under pressure. The result in use is that the annular
spaces become filled with water which effectually cuts off the passage of steam
and also packs against water, and altogether, therefore, issuance of hot water or
stcam through this channel is effectually cut off.
But particularly in a double valved construction like this a valve closing spring
is required, and in fact gauge cocks generally have springs for this purpose. Such
springs, however, as already stated have heretofore invariably so far as I know
and believe been placed in positions where exposure to the hot water or steam
would soon deprive them of their temper and tension and leave the cock in a defec-
tive condition. I have, therefore, constructed this cock to avoid this objection, and
placed the spring wholly outside of the body or barrel, A, where it is exposed to
the cooling influence of the atmosphere, and is not possibly subject to injurious
heating. To this end the head B is extended outside the barrel A and provided
with a spring confining flange, while the extremity of the barrel A is fashioned
in like suitable manner to form an inside bearing for the spring. A spiral spring 1)
is coiled about the head B between these two bearings and exerts a constant tension
outward, so as to normally keep the main valve closed except as it momentarily
is opened for gauging purposes. An operating lever E serves to actuate the valves
by depressing or pressing inward on head B.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
1. The body of the cock having a central chamber and outlet and a diaphragm
near each end provided with a valve seat, in combination with a sliding head in
one end of said body constructed to close one of said seats, and a main valve in
the other end, substantially as described.
2. The body of a gauge cock provided with a valve seat in its outer end and a
barrel shaped extension outside said seat, in combination with an annularly grooved
and ribbed head having a valve on its inner end and operating in said extension,
substantially as described.
3. The combination of the body of the cock having a valve seat at each end,
with a main valve and stem, a sliding head having a valve and a series of alter-
nating ribs and grooves outside the valve, and a spring to close the main valve,
substantially as described.
4. In gauge cocks, a body provided with a main valve seat and an auxiliary

page_text: seat to prevent leakage from the cock, in combination with a main valve and a
sliding head constructed to close on the auxiliary valve seat, and a spring about
the outer portion of said head to close the main valve, substantially as described.
5. The body of the cock having a main valve seat and an auxiliary valve seat
and a discharge between said seats, in combination with the main valve and its
stem, a valve head connected with the outer end of said stem to close the auxiliary
valve seat, and a spring about the said head and bearing against the outer end
of the body of the cock, substantially as described.
Dated at Cleveland, O., this 25th day of January 1899.
་
JOHN HARLOW WARREN.