Improvements in Horizontal Boilers.
Year: 1892

page_text: of Application. 8th Jan., 1892-Accepted, four fo
Date of Application. 8th Jan., 1892-Accepted,
TOU C
COMPLETE SPECIFICA
Improvements in Horizontal Boilers.
communication from ARTHUR MIGNOT, of 50, Rue du Chatelain, Ixelles,
Brussels, in the Kingdom of Belgium.
1, ALFRED JULIUS BOULT of 323 High Holborn in the County of
iddlesex, M.1.M.E., do hereby declare the nature of this invention and in what
anner the same is to be performed, to be particularly described and ascertained in
d by the following statement :-
This invention relates to boilers in which liquids are heated to the boiling point
converted into steam the object being the better to utilize the heat.
The useful effect of the heat furnished by the fuel is determined by the relation
etween the heating surface directly acted upon by the fire and the various parts of
he boiler. The result it is proposed to attain therefore is to increase the heating
urface as much as practicable while at the same time reducing as much as possible
he external dimensions or bulk of the apparatus.
With this object in view there is arranged within the ordinary cylindrical body
forming the outer casing of the boiler a rectangular case the parallel walls of which
are connected by a double set of tubes, the tubes of one set being vertical while
those of the other are slightly inclined though nearly horizontal. The space left
free within this multitubular body, around the tubes is traversed throughout its
length by the flame or heated gases of combustion. In this manner the products of
combustion are most completely utilized by means of a very extensive because
divided heating surface.
The arrangement of this multitubular body within a horizontal boiler and its
junction with the cylindrical body form one of the essential features of the
invention.
This is represented in the accompanying drawings in plan, in section, and in
elevation, by way of example only. The size of the apparatus and their different
parts the length of the tubes as also their number, may vary according to
requirements.
On Sheet 1 of the drawings is illustrated the application of this invention to a
boiler with the furnace arranged outside and closed in with masonry.
The same arrangement may however be adopted in the case of boilers with
internal fire-boxes to the boilers of factories, portable and locomotive engines, or
the like, and also to boilers employed as steam or hot water heating apparatus.
The fuel to be employed may be coal, coke, gas, petroleum or any other suitable
material the fire-place being arranged accordingly in the usual way. I deem it
unnecessary to multiply the examples of applicability of this invention as it admits
5 of practically unlimited variation in the details, to suit the height of the apparatus
to be employed the object to be attained, and the fuel chosen.
10
45
Figure 1 is a vertical longitudinal section; Figure 2 à horizontal longitudinal
section, and Figure 3 a vertical cross-section, the same letters of reference
designating the corresponding parts in all the figures.
A is the ordinary external cylindrical casing, B is the inner rectangular tubular
body, C designates the vertical tubes, and D the inclined tubes.
In the external furnace arrangement the tubular body B may be removed from
the cylindrical casing A by disconnecting the joints E and E' which are arranged
in such a manner that their bolts are protected from the action of the liquid.
In the case of boilers with internal furnaces it is the cylindrical body A that ha
to be taken off the rectangular case so that all the tubes are uncovered and al
parts of the boiler readily accessible. The furnace in this case is located in th
cylindrical vertical front portion. Thus it will be seen that in all cases access t

page_text: the boiler for inspection, cleaning, or repairs, may be had with the greatest
facility.
The same principle is applicable to boilers arranged for continuous heating and
an automatic supply of fuel.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
The special arrangement within a horizontal boiler of a rectangular body
provided with the double set of tubes substantially as described and illustrated in
the accompanying drawings.
Dated this 8th day of January 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicant.