Improvements in Steam Generators.
Year: 1897

page_text: Improvements in Steam Generators.
JAMES BLAKE Eastbrook The Avenue Linthorpe Middlesbrough Yorkshire do
hereby declare the nature of this invention to be as follows:-
My Invention consists of improvements in a former invention and has for its object
to dispense with bent tubes and to avoid oblique tube holes when employing straight
tubes. In a former invention for which Letters Patent numbered 5254 of the
year 1878 have been granted to me a vertical boiler was provided with a combustion
chamber situated eccentric to or on one side of the centre line of the outer shell and
connected by radiating firetubes with the boiler shell. I now indent or bulge the
shell and combustion chamber tube plates or either of them so as to bring the parts
to be perforated with the tube holes square with the tubes. In some cases I may
form longitudinal corrugations or steps upon the shell or combustion chamber tube
plates or upon both of them the said corrugations or steps being square with the
tubes.
JAMES BLAKE Eastbrook The Avenue Linthorpe Middlesbrough Yorkshire
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 consists of improvements in a former invention and has for its object
to dispence with bent tubes and to avoid oblique tube holes when employing straight
tubes. In a former invention for which Letters Patent numbered 5254 of the
year 1878 have been granted to me a vertical boiler was provided with a combustion
chamber situated eccentric to or on one side of the centre line of the outer shell and
connected by radiating firetubes with the boiler shell. I now indeut or bulge the
shell and combustion chamber tube plates or either of them so as to bring the parts
to be perforated with the tube holes square with the tubes. In some cases I may
form longitudinal corrugations or steps upon the shell or combustion chamber tube
plates or upon both of them the said corrugations or steps being square with the
tubes.

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 represents a vertical section and Fig. 2 a sectional plan of a Vertical
Steam Generator illustrative of the application of my Improvements to my aforesaid
Invention of the year 1878. The shell tube plates X are indented, embossed or stepped
at the parts A so as to bring the plate square or approximately square with the
tubes y.
Figs. 3 and 4 illustrate a portion of an indented and embossed plate Fig. 3 being
a horizontal section and Fig. 4 a front view shewing the indents b. and embossments c.
The embossments enable me to use longer tubes.
Figs. 5 and 6 illustrate a portion of a stepped plate Fig. 5 being a horizontal
section and Fig. 6 an elevation shewing the steps d. The form of the steps may be
In some
varied, as, for example, the corrugated form f represented in Figs. 7 and 8.
cases plates or strips e may be riveted to the tube plates to strengthen the stepped
parts.
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
1
The application of indented, embossed or stopped tube plates substantially as and
for the purpose set forth and indicated hereinbefore and in & by the accompanying
drawings.