Improvements in and relating to Boilers, Chiefly Designed for Use in connection with Water-heating Apparatus.
Year: 1889

page_text: Date of Application, 19th Sept., 1889
Complete Specification Left, 5th Mar., 1890-Accepted, 5th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in and relating to Boilers, Chiefly Designed for Use
in connection with Water-heating Apparatus.
I, JAMES THOMAS SPENCER, of 25 and 27, London Road, Reading, in the county of
Berks., Gas, Hot Water and Sanitary Engineer, do hereby declare the nature of this
invention to be as follows:-
My invention relates to an improved boiler for heating water, which boiler is
adapted to be heated by either oil or gas and which is so arranged that the
heat is more effectively utilized than in boilers of the same class as heretofore
constructed.
My improved boiler, which is preferably circular in horizontal section, is provided
with a hollow or concave bottom beneath which the oil or gas burner is located. The
top of the boiler may be of conical shape and, when the boiler is used as a circulating
boiler, has the flow-pipe attached to its apex. Around the boiler is placed a casing
of approximately the same shape as the boiler. This casing is perfectly tight at the
top but is open around the bottom so as to form an air-chamber around the said
boiler. When the gas or oil is lighted the air in the said chamber is raised to a very
high temperature, so that the heat is so thoroughly utilized that the consumption of
gas or oil is reduced to a minimum.
The whole apparatus herein before described is enclosed in an outer casing of any
desirable form.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Boilers, Chiefly Designed for Use
in connection with Water-heating Apparatus.
I, JAMES THOMAS SPENCER, of 25 and 27, London Road, Reading, in the county
of Berks., Gas, Hot Water and Sanitary 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 :-
My invention relates to boilers adapted to be heated by either oil or gas, and has
for its object to provide means, whereby the heat is more effectively utilized than in
boilers of the same. class as heretofore constructed.
According to my invention a casing or jacket is placed around a boiler, which
casing or jacket is closed at the top but open around the bottom, so as to form an
air-chamber. When the oil or gas is lighted the air in the said chamber is raised to
a very high temperature. The heat is thus so effectively utilized that the consumption
of oil or gas necessary for maintaining the temperature of the boiler is reduced to a
minimum.
The whole apparatus is enclosed in an outer casing of any desirable form.
To enable my invention to be fully understood I will describe the same with
reference to the accompanying drawing, in which-
Figure 1 is a sectional elevation of a circulating boiler having my improvements
applied thereto.
Figure 2 is a similar view showing my improvements applied to an open boiler or
copper.
Similar letters.of reference indicate corresponding parts in both the figures.
a indicates the outer casing which is provided with an opening 6 having a door c

page_text: for affording access to the interior of the said casing for the purpose of lighting the
burner, and d is the boiler.
As shown in figure 1, the boiler is a circulating boiler and is provided with the flow
pipe e connected to it at the top and with the return pipe. f connected to it at the
bottom. The said boiler is also represented as being provided with a flue tube g to
increase the heating surface. is the casing, which, according to my invention, is
arranged around the boiler d. As shown in figure 1, this casing is supported by the
flow pipe e, but it is to be understood that it may be-supported in any other desirable
manner.
is a flue for carrying off the products of combustion from the burner.
With the construction herein before described it is obvious that, when a gas or other
flame is lighted beneath the boiler d, the air in the space between the casing and
the boiler d'will be raised to a high temperature and that as the air cannot escape
therefrom this temperature will be maintained: Also as the products of combustion
from the flame of the burner pass off in the direction of the arrows between the
casing and the outer casing a to the fluo i, it is obvious that no air current which
tends to cool tlio boiler comes into contact therewith.
In combination with the door c I advantageously arrange a glass or other reflector k
as shown in figure 1, which, when the door is opened, serves to enable the flamo to be
seen without the necessity for stooping, whereby the regulation of the gas or other
flame can be easily effected. I make no claim to this arrangement, however, in the
present specification as it forms the subject matter of my application for Letters Patent,
dated March 4th 1890 No. 3481.
In figure 2 which illustrates the application of my invention to an open boilër¹ or
copper, the casing is shown as secured to a flange.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is
1. The combination with a boiler; of a casing surrounding the same, but open at
the bottom, which casing serves to retain the heat around the boiler and to prevent
any air current coming into contact therewith to cool it, substantially in the inanner
described.
2. The manufacture and use of a boiler provided with a casing (such as h) around
the same, substantially in the manner hereinbefore described and illustrated in the
accompanying drawing, for the purpose specified.
Dated tho 5th day of March 1900.
G. F. REDFERN' & Co.,
4,, South Street, Finsbury; London, Agents for the Applicant.