Improvements in Steam Boilers.
Year: 1899

page_text: Date of Application, 9th May, 1899
Complete Specification Left. 9th Feb., 1900-Accepted, 10th Mar.. 1900
Improvements in Steam Boilers.
I, WILLIAM PENMAN, of Springfield House, Springfield Road, in the City of
Glasgow, Engineer, do hereby declare the nature of this invention to be as
follows:
-
This invention has for its object to so enhance the strength or resistance to
pressure of the ends of steam boilers of the shell type (such as Cornish, Lan-
cashire and marine boilers), that the use of gusset and other stays may be in
great measure dispensed with or lessened in number, the danger of defective
staying being thus largely avoided and the weight of the structure reduced.
For that purpose I press or otherwise form the end plates of the boiler with a
series of deep corrugations which may extend in radial or vertical and approxi-
mately parallel lines over part of the plates between the furnace flues and the
upper part of the boiler or in arc like or crescent form along that part of each
end. Flat portions of the plates may be left at intervals between the corruga-
tions to allow for rivetting thereto of such stays as may be deemed necessary to
provide in conjunction with the corrugating of the plates for resisting excep-
tionally high pressure.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow,
Agent for the Applicant.
Improvements in Steam Boilers.
I, WILLIAM PENMAN, of Springfield House, Springfield Road, in the City of
Glasgow, 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:―
This invention has for its object to so enhance the strength or resistance to
pressure of the ends of steam boilers of the shell type (such as Cornish, Lan-
cashire and marine boilers), that the use of gusset and other stays may be in
great measure dispensed with or lessened in number, the danger of defective
staying being thus largely avoided and the weight of the structure reduced.
The invention is illustrated by the accompanying drawings, Figure 1 being a
front elevation, and Figure 2 a horizontal section on the line x--x, Fig. 1, of a
Cornish boiler, shewing my invention applied thereto.

page_text: In carrying out the invention I press or otherwise form the end plates A of the
boiler with a series of deep corrugations or indentations A which may extend
in vertical and approximately parallel lines, or in horizontal lines or lines radia-
ting towards the centre of the boiler, over part of the plates between the furnace
flues and the upper part of the boiler, or in are like or crescent form along that
part of each end. Flat portions of the plates A may be left at intervals between
the corrugations or indentations to allow for rivetting thereto of such stays as
may be deemed necessary to provide in conjunction with the corrugating of the
plates for resisting exceptionally high pressure.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
A steam boiler of the shell type having, its end plates formed with a series of
'deep corrugations or indentations between, the furnace flue and the upper part
of the boiler, substantially as and for the purpose set forth.
-32701.0
OI February. 1900.
...
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather;
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow,
Agent for the Applicant.