Improved Gas Heated Boiler for Various Purposes.
Year: 1895

page_text: Date of Application, 9th Feb., 1895
Complete Specification Left, 8th Nov., 1895-Accepted, 21st Dec.. 1895
PROVISIONAL SPECIFICATION.
Improved Gas Heated Boiler for Various Purposes.
1, WILLIAM BELL of St. Philips Road in the City of Sheffield Gas Fitter, do
hereby declare the nature of my invention to be as follows:-
The object of the invention is to construct a compact boiler of simple arrange-
ment that will fulfill all the requirements of such a boiler, with the least amount
or consumption of gas.
The body of the boiler consists of an inner and outer skin, say for example of
sheet copper, leaving an annular water space between the two closed at both the
top and the bottom, but having an opening through each end.
At intervals in the tubular interior, I fix flat baffle plates extending across the
opening to within a short distance from the inner skin on one side, which forms
the passage for the flame and gases.
These baffle plates are hollow, and communicate with the water space between
the inner and outer skins of the boiler, and they are preferably fixed in an inclined
position.
Above the top of the water space in the upper part of the boiler, is a chamber
to receive the water of condensation, provided with an outlet, and is closed by a
metal cap having a central opening for the flue pipe.
A suitable inlet and outlet connection is provided for the water supply and for
the circulation of the water to and from the coil or other heating apparatus.
Attached to the base plate upon which the boiler is fixed is a pivotted burner,
which consists of a length of pipe, perforated with a series of holes or fitted with
burners.
This can be turned from beneath the boiler to be lighted, and then be returned
to its normal position under the lowest baffle plate.
The flame from the burner impinges upon the water filled baffle plates in
succession until it finally escapes from the flue, as by my construction it cannot
escape by any more direct course.
Dated the 7th day of February 1895.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
Improved Gas Heated Boiler for Various Purposes.
I, WILLIAM BELL, of St. Philips Road, in the City of Sheffield, Gas Fitter,
do hereby declare the nature of this invention and in what manner the same has to
be performed, to be particularly described and ascertained in and by the following
statement:
The object of my invention is to construct a compact boiler or water heater of
simple arrangement that will fulfil all the requirements of such a boiler with the
minimum of gas.
The annexed sheet of drawings illustrates a boiler made according to my
invention, like letters of reference indicate like parts in either of the figures.

page_text: Fig. 1, is an elevation of the boiler.
Fig. 2, vertical section of same.
Fig. 3, cross section of same at X X.
The body of the boiler C, is preferably of a cylindrical form and consists of an
inner and outer skin or shell made for example of sheet copper providing an
annular intermediate water space W, closed at the top and at the bottom, but
leaving an opening through each end.
At intervals within the tubular interior I fix to the inner shell a number of
flat baffle plates B, P, extending across the interior to within a short distance from
the opposite side, the small space S, thus left at the end of each plate alternately
on opposite sides of the interior forming au opening for the passage of the flame
and heated gases.
These baffle plates are made hollow or with a water space, which communicates
at all points of its circular junction with the water space of the cylinder C, and
they are preferably inclined upwards as seen in Fig. 2.
Above the upper part of the cylinder C, I construct a chamber C, W, to receive
the water of condensation from the flue F and provided with an outlet pipe C, P.
It is closed by a metal cap C, C, having a central opening for the flue pipe F, to
carry away the products of combustion. An inlet and outlet W, P, for the water
supply and for the circulation of the water to and from the coil radiator or other
form of heating apparatus.
Attached to the base plate upon which the cylinder C, is placed, is a pivotted
arm consisting of a length of gas pipe G, P, perforated longitudinally at one end
with one or more lines of boles, or it may be fitted with nipples and it thus
constitutes the burner.
This arm can be turned upon the joint G, (at which point the gas supply pipe
is connected) so as to withdraw it from under the cylinder for convenience of
lighting, and when it is turned back to its normal position as shown the flame
impinges upon the lower part of the first baffle plate B, P, and the heated gases
or products of combustion pass upwards under each baffle plate in succession until
they finally escape into the flue F. 1 do not bind myself to the number of baffle
plates nor to the precise details shown in the drawings.
It will be seen that by my construction of the interior, I obtain a very
large area of heating surface, and apply the heat thereto in the most effective
manner.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improved gas heated boiler arranged, constructed, and operating,
substantially as herein before described and shown.
2. In a gas heated boiler, a cylinder having an annular water space, and having
a number of water containing baffle plates B, P, communicating therewith,
arranged and constructed as hereinbefore described and shown for the purpose
specified.
Dated the 6th day of November 1905
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.