Year: 1898

page_text: I, JOHN GILMOUR, of 2, Holmhead Terrace, Cathcart, Renfrewshire, Boiler
Maker, do hereby declare the nature of this invention to be as follows:-
This invention relates to water tube boilers in which the tubes are arranged in
sections which can be readily removed for repairing or cleaning purposes without
the necessity of drawing the fire or letting down the steam.
The invention is an improvement upon or development of my prior invention.
No. 25,287 of 1896.
In carrying out my present invention I use straight water tubes in each section
instead of looped or curved tubes as in my prior invention aforesaid. The tubes
are arranged at an incline.
The tubes of each section, at their lower ends, are expanded or otherwise
secured in a tube plate attached to or made one with a box or casing arranged
between the shell of the combustion chamber and the shell of the boiler. This
box or casing constitutes a water and (or) steam chest and is removably fitted in
place. A ring or casing which is secured steam and water tight between the
inner and outer shells of the boiler forms a cavity for the reception of the chest
aforesaid. This chest is provided with a cover plate which is removably bolted
or otherwise secured in place and which is provided with or has jointed to it a pipe
connection, provided with a cut off valve, which communicates with the steam
or water space of the boiler.
The tubes of each section at their upper ends are likewise fitted in a tube plate
which is preferably made one with or connected to a box or casing arranged
between the inner and outer shells of the boiler and which constitutes a second
water and (or) steam chest. The cover of this chest has a pipe connection which
is jointed to a second pipe connection provided with a cut off valve and com-
municating with the steam or water space of the boiler. This second chest is also
provided with a surrounding ring or casing which constitutes a steam and water
tight cavity for the chest.
The chests are or may be provided with drain pipes and cocks.
A number of sections of tubes may be fitted in the boiler and they are preferably
arranged so as to run across the combustion chamber at right angles to one
another.
Whenever necessary any one of the sections can be removed from the boiler.
Dated this 8th day of January 1898.

page_text: I, JOHN GILMOUR, of 2, Holmhead Terrace, Cathcart, Renfrewshire, Boiler
Maker, 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 relates to water tube boilers in which the tubes are arranged in
sections which can be readily removed for repairing or cleaning purposes without
the necessity of drawing the fire or letting down the steam.
The invention is an improvement upon or development of my prior invention
No. 25287 of 1896.
And in order that my said invention may be properly understood I have here-
unto appended an explanatory sheet of drawings, whereon,
Figs. 1, 2, 3 and 4 show, by way of illustration, a vertical boiler constructed
in accordance with my invention.
Fig. 1 is a vertical section, Fig. 2 is another vertical section at right angles
to the section Fig. 1, Fig. 3 is an elevation, and Fig. 4 is a sectional plan, on
the line - Fig. 1, of the boiler.
On the drawings the same reference letters wherever repeated indicate the same
or similar parts.
In carrying out my present invention I use straight water tubes a in each section
instead of looped or curved tubes as in my prior invention aforesaid. The tubes
are arranged at an incline as shown.
The tubes of each section, at their lower ends, are expanded or otherwise
secured in a tube plate b attached to or made one with a box c arranged between
the shell of the combustion chamber and the shell e of the boiler. This box
constitutes a water and (or) steam chest and is removably fitted in place. A
ring or casing f, which is secured steam and water tight between the inner and
outer shells of the boiler, forms a cavity for the reception of the chest aforesaid.
This chest is provided with a cover plate g which is removably bolted or otherwise
secured in place and which is provided with or has jointed to it a pipe connection h
provided with a cut off valve i which communicates with the water space of
the boiler.
The tubes a of each section, at their upper ends, are likewise fitted in a tube
plate which is, preferably, made one with or connected to a box k arranged
between the inner and outer shells of the boiler and which constitutes a second
water and (or) steam chest. The cover of this chest has a pipe connection m
provided with a cut off valve n and communicating with the steam or water space
of the boiler. This second chest is also provided with a surrounding ring or
casing o which constitutes a steam and water tight cavity for the chest.
The chests are, or may be, provided with drain pipes and cocks.
A number of removable sections with their tubes a may be fitted in the boiler
and the tubes are preferably arranged so as to run across the combustion chamber
at right angles to one another as shown in the drawings. Each section is,
although not shown on the drawings, fitted complete with its pipe connec-
tions h, m, and valves i, n
Whenever necessary any one of the sections can be removed from the boiler for
the purpose of repairs or otherwise, without interfering with the action of any
of the other sections, after first closing its valves i, n, and disconnecting its pipe
connections h, m.

page_text: Each boiler would be fitted with the usual safety valve, gauge and other
appurtenances.
The invention can, generally, be adapted to land and marine boilers where
suitable.
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 consider novel and desire to claim is:-
The construction and arrangement of water tube boilers with removable sections
of water tubes substantially as herein before described with reference to the
drawings annexed.
Dated this 8th day of October 1898
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.