Improvements in or connected with Boilers.
Year: 1895

page_text: Date of Application, 6th Aug., 1895
Complete Specification Left, 25th Feb., 1896-Accepted, 9th May. 1895
COURCOLOR WIn Bollers.
I, THOMAS ROWLAND, of Market Buildings, Pontypridd, in the County of
Glamorgan, Wales, Architect, do hereby declare the nature of this invention to be
as follows:—
My invention relates to improvements in boilers specially though not exclusively
adapted for use in connection with kitchen ranges, open grates and the like, by
means of which a great extent of heating surface and other advantages are
obtained.
In carrying my invention into effect, I make my boiler of any convenient shape
and preferably of cast steel, with perforations extending therethrough, the walls of
the said perforations being cast with the shell or part thereof. These perforations
are designed for the passage or conveyance of the furnace gases. In a contemplated
form of my invention I make the boiler of cubical or approximately cubical shape,
with perforations extending from front to back, the said perforations being of
rectangular form in vertical cross section and with the longer sides of the said
rectangles vertical. In this form I cast the whole of the boiler, including the
walls of the perforations, practically in one piece.
Dated thin Ch 1...
A
1005
For the Applicant,
J. G. LORRAIN, M.I.E.E., M.I. Mech. E.,
Norfolk House, Norfolk Street, Strand, London, W.C.
COMPLETE SPECIFICATION.
Improvements in or connected with Boilers.
I, THOMAS ROWLAND, of Market Buildings, Pontypridd, in the County of
Glamorgan, Wales, Architect, 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 improvements in boilers specially though not exclusively
adapted for use in connection with kitchen ranges, open grates and the like,
by means of which a great extent of heating surface and other advantages are
obtained.
In order that my invention may be readily understood I shall proceed to
describe it with reference to the accompanying sheet of drawings in which are
illustrated two forms of my invention the said forms giving good results in
practice.
In these drawings
Figure 1 is a sectional view of a simple form of my invention in which the
boiler is of square or rectangular shape the said boiler being shown in position with
respect to its flue.

page_text: Figure 3 is a perspective view of a modified form and
Figure 4 is a sectional view of the same seen in position.
Referring now to Figures 1 and 2 it will be seen that the boiler consists of a
shell of rectangular form with perforations 2 extending therethrough from front
to back. The said perforations are separated by water chambers 3, (hereinafter
termed the "lower water chambers,") which extend downwards from the main
water chamber 4 in such manner as to resemble when seen in front elevation the
teeth of a comb. These perforations are designed for the passage or conveyance
of the furnace gases from the fire space 5 to the flue 6. It will be seen that a
boiler constructed under my invention has a very large heating surface and that
the lower water chambers are heated not only below but also at the sides and at
the front and back also.
I prefer to make the lower water chambers of slightly tapered form from above
downwards as is clearly shown in Figure 2. The object of this is twofold. It
facilitates moulding and it facilitates circulation of the water within the boiler.
7 is the cover of a manhole secured by threaded studs and nuts 8 as shown.
Figures 3 and 4 show a somewhat modified form of my invention. In the said
modified form it will be seen that the front part of the shell of the main water
chamber extends somewhat forward so as to form a kind of canopy 9. The object
of this is to prevent the upper part of the perforations 2 from being clogged with
fuel when the latter is carelessly fed to the furnace so that a clear space for the
flames or heating gases is secured at the upper portions of the said perforations.
It will be noticed also that the said perforations instead of being of the form shown
in Figure 1 are of different shape owing to the fact that the lower part of the
lower water chambers is made to project and that part of the shell which separates
the top of the perforations from the bottom of the main water chamber is curved
so as to obtain a more direct play of the flames or furnace gases upon the said part
of the shell.
I desire it to be understood that I do not limit myself to the specific forms of my
invention shown in the drawings as the principle of my invention being understood
any person skilled in the art to which it appertains will be able to modify the
details to an indefinite extent.
I prefer to manufacture my boiler of cast steel and I may fit it with taps, pipes
and other fittings as may be desired.
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 :-
as to
1. A boiler having perforations passing therethrough in such manner
divide the lower part of the water space into a series of what I have termed
"lower water chambers" that is to say chambers projecting from the main water
chamber in a manner resembling the teeth of a comb.
2. A boiler substantially of the form described and illustrated in the drawings.
Dated this 19th day of February 1890.
This 15th day of February 1830.
For the Applicant,
J. G. LORRAIN, M.I.E.E., M.I. Mech. E.,
Norfolk House, Victoria Embankment, London, W.C.,
Chartered Patent Agent.