Improvements in the Construction and Mounting of Dead Weight Safety Valves for Kitchen and Hot Water Boilers and Hot Water Heating Apparatus.
Year: 1894

page_text: Date of Application, 17th Sept., 1894
Complete Specification Left, 17th Jan., 1895-Accepted, 2nd Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Construction and Mounting of Dead Weight
Safety Valves for Kitchen and Hot Water Boilers and Hot
Water Heating Apparatus.
We EDWARD GEORGE HILLER of 22 St. Anns Square, Manchester, in the
County of Lancaster, Chief Engineer and Manager of the National Boiler and
General Insurance Co. Limited, and HENRY HILLER of the same address,
Consulting Engineer, do hereby declare the nature of this invention to be as
follows:-
Our said invention relates to the open dead weight safety valves now usually
applied to hot water boilers and heating apparatus.
Such valves are apt to leak or allow of the escape of water past the valve by
reason of shocks or throbs from pipes or taps communicating with the boiler and
the valve is also liable to become choked by soot and other deposits from the
chimney. To obviate these disadvantages we propose to enclose or house the
valve in a casing, and also to provide means in conjunction with the said casing,
whereby any water leaking past the valve or discharged through the valve by
excess of pressure, will be led safely away. In conjunction with the casing we also
provide means for testing the valve so as to make sure that it is in proper working
order, and the testing plug also serves as an auxiliary relief in the event of the
proper waste pipe becoming obstructed or choked.
In carrying our invention into effect we provide a dead weight safety valve of
the ordinary type and screw the tubular seating into the top of the boiler.
A loaded pendulous valve is placed upon the seating.
The loaded valve is then surrounded and enclosed by a casing which might be
mounted on the exterior of the tubular seating. The top of the valve is formed
with a groove or gate, and a plug projecting loosely through the top of the casing
is formed with a foot which engages with the said gate or groove in the top of the
valve. By turning the plug projecting through the casing, the valve is also turned
on its seating so that its freedom on the seat can always be tested and ascertained.
A waste pipe is provided at the foot of the casing through which any water which
may leak or be discharged through the valve is taken away. If the said waste
pipe should at any time become obstructed or choked, the water escaping or leaking
through the valve will rise in the casing and escape through the test plug hole at
the top. Thus the test plug performs the function of an auxiliary relief valve.
The whole arrangement constitutes a valve which possesses appreciable
advantages of safety, durability and convenience over existing valves of the
same type.
Dated this 15th day of September 1894
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.

page_text: 1
Improvements in the Construction and 'Mounting of Dead Weight
Safety Valves for Kitchen and Hot Water Boilers and Hot
Water Heating Apparatus.
We EDWARD GEORGE HILLER of 22 St. Anns Square, Manchester, in the
County of Lancaster, Chief Engineer and Manager of the National Boiler and
General Insurance Co. Limited, and HENRY HILLER of the same address,
Consulting Engineer, 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 and accompanying drawings
Our said invention relates to the open dead weight safety valves now usually
applied to hot water boilers and heating apparatus.
Such valves are apt to leak or allow of the escape of water past the valve by
reason of shocks or throbs from pipes or taps communicating with the boiler and
the valve is also liable to become choked by soot and other deposits from the
chimney. To obviate these disadvantages we propose to enclose or house the
valve in a casing, and also to provide means in conjunction with the said casing,
whereby any water leaking past the valve or discharged through the valve by
excess of pressure will be led safely away.
In conjunction with the casing we also provide means for testing the valve so as
to make sure that it is in proper working order, and the testing plug also serves as
an auxiliáry relief in the event of the proper waste pipe' becoming obstructed or
choked.
The annexed sheet of drawings will render our invention more clearly
understood.
Fig. 1 is a vertical section of the casing and valve.
Fig. 2 is a plan partly in section.
In carrying our invention into effect we provide a dead weight safety valve a of
the ordinary type, and screw the tubular seating 6 into the top of the boiler.
The pendulous valve a loaded by the weight a² is placed upon the seating. The
loaded valve is surrounded and enclosed by a casing c which is screwed or mounted
upon the foot of the exterior of the tubular seating b. A cover c² closes the top of
the casing. The top of the weighted valve a is formed with a groove or gate a¹ as
shown in Fig. 3 and a plug d projecting loosely through the cover c² of the casing c
is formed with a foot d which engages with the said gate or groove a¹ in the top
of the valve.
By turning the plug d projecting through the casing, the valve a is also turned
on its seating b so that its freedom on the seat can always be tested and ascertained.
A waste pipe is provided at the foot of the casing and screwed into the opening c¹
through which any water which may leak or be discharged through the valve is
taken away..
If the said waste pipe at c' should at any time become obstructed or choked, the
water escaping or leaking through the valve will rise in the casing c and escape
through the test plug hole at the top. The test plug d being loose so that it is
easily lifted by the escaping water. Thus the test plug & performs the function of
an auxiliary relief valve.
The whole arrangement constitutes a valve which possesses appreciable
advantages of safety, durability and convenience over existing valves of the
same type.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is.
1. The general arrangement, construction and combination of dead weight safety
valve for the purposes and substantially as hereinbefore described and shown.
2. Housing or enclosing a dead weight safety valve for kitchen and hot water
boilers and hot water heating apparatus in a surrounding casing so as to prevent
the valve from becoming choked with soot and other deposits, in the manner and
substantially as herein before described and as illustrated.
3. In combination with a dead weight safety valve for the indicated purposes,
the enclosing casing c having a draining pipe or opening in the foot and fitted with
a loose plug d engaging with the weighted valve, for testing purposes, and also for
relieving the casing of contained water pressure, substantially as described and as
indicated.
Dated the 16th day of January 1895.
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.