Improvements in Boilers for Heating Purposes.
Year: 1890

page_text: Date of Application, 24th Dec., 1890
Complete Specification Left, 23rd Oct., 1891-Accepted, 24th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in Boilers for Heating Purposes.
I JOHN ROBERT MAW of Kirk Ella near Hull in the County of York Hot
Water Engineer, do hereby declare the nature of this invention to be as follows:-
My improvements relate to the "Independent Box Boiler" class employed for
heating purposes, where water is circulated through pipes in horticultural houses,
churches, chapels and the like purposes.
The objects of this invention are to endow the boiler with a greater amount of
effective heating surface than is contained in any other boiler of its class, and to
preserve at the same time the best facilities for supplying the furnace with fuel.
Instead of having the feeding tube through the crown as is most usual in the
box boiler class it is formed in the front near the top. In this way not only are
all objections to the lodgment of fuel on the top of boiler obviated, but the whole
extent of the top water jacket, which is the most direct of all heating surface, is
preserved entirely unbroken.
The power of the boiler is further increased by the interior being so constructed
that in addition to a waterway tongue or bridge whereon the flames impinge, and.
in addition to descending and ascending flues, there is a horizontal Hue above
surrounded by a water jacket. This improvement above all others ensures that the
full force of the heat is appropriated within the boiler and fully exhausted upon the
inner surface before the chimney is reached.
I arrange a damper in the smoke flue and another in the feeding tube castings by
which I can allow the smoke to discharge when necessary without passing through
the upper horizontal flue to facilitate lighting the furnace.
All the advantages of a boiler encased or enclosed in brickwork are secured by
this arrangement and all its disadvantages avoided.
Dated this Twenty-third day of December 1890.
JOHN E. WALSH,
Savile Street, Hull, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Boilers for Heating Purposes.
I MARY ANN Maw of Kirk-Ella, near Hull, in the County of York, Widow
executrix of the late John Robert Maw, 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 improvements relate to the "Independent Box Boiler" class employed for
heating purposes, where water is circulated through pipes in horticultural houses,
churches, chapels, and the like purposes.
The objects of this invention are to endow the boiler with a greater amount of
effective heating surface, than is contained in any other boiler-of-its-class, and to
preserve at the same time the best facilities for supplying the furnace with fuel.

page_text: Instead of having the feeding tube A' through the crown, as is most usual in the
box boiler class, it is formed in the front near the top. In this way, not only are
all objections to the lodgement of fuel on the top of the boiler obviated, but the
whole extent of the top water jacket B', (which is the most direct of all heating
surface,) is preserved entirely unbroken.
The power of the boiler is further increased by the interior being so constructed
that in addition to a waterway tongue or bridge C', whereon. the flames impinge,
and in addition to descending and ascending flues D', E, there is a horizontal
flue F above, surrounded by a water jacket, and preferably a cross tube M.
This improvement above all others ensures that the full force of the heat is
appropriated within the boiler, and fully exhausted upon its inner surface before
the chimney is reached.
I arrange a damper G in the smoke flue N, and another H in the feeding tube
castings, by which I can allow the smoke to discharge when necessary, without
passing through the upper horizontal flue F, to facilitate lighting the furnace.
K, K, are the various doors for cleaning, feeding, and draught regulating.
LL, are socket castings for the flow and return circulating pipes.
All the advantages of a boiler encased or enclosed in brickwork are secured
by this arrangement, and all its disadvantages avoided.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I would have it understood
that what I claim is :-
-
1. The construction of box boilers with the feeding tube A', dampers G and H,
and smoke-flue N, at the front of the boiler, as and for the purposes such as shown
and described.
2. The construction of box boilers with feeding tube A', dampers G and H, top
water jacket B!, tongue C, and flues D, E, and F, as and for the purposes such as
shown and described.
Dated this Twenty second day of Datahar 1001