Improvements in Water Tube Boilers.
Year: 1896

page_text: Date of Application, 5th Feb., 1896
Complete Specification Left, 22nd Oct., 1896-Accepted, 28th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in Water Tube Boilers.
I, WILLIAM RUSSELL CUMMINS of Violetbank, Wormit in the County of
Fifeshire North Britain, Engineer, do hereby declare the nature of this invention
to be as follows:-
The boiler consists of two cylindrical drums, one placed above the other.
The ends of these drums face one another & are joined together by water tubes,
secured in said ends. These ends may be curved or flat & may be joined together
by curved or straight water tubes.
The furnace is placed underneath the lower cylindrical drum, which latter has a
flue running through it, through which the products of combustion pass.
The space between the two drums, above this flue, is kept free of water tubes, &
forms the combustion chamber.
The hot gases are compelled, after leaving the combustion chamber, to follow a
tortuous course among the water tubes, by means of suitable deflectors & are
collected into an uptake outside the tubes, whence they pass to the funnel.
Dated this Fourth day of February 1896.
W. R. CUMMINS.
I, WILLIAM RUSSELL CUMMINS of Violetbank, Wormit, in the County of
Fife, 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:-
The boiler consists of two cylindrical drums, one placed above the other.
The ends of these drums face one another, and are joined together by water
tubes, secured in said ends.
These ends may be curved or flat, and may be joined together by curved or
straight water tubes.
The furnace is placed below the lower cylindrical drum, which latter has a flue
running through it, through which the products of combustion pass. The space
between the two drums, above this flue is kept free of water tubes & forms the
combustion chamber.
The gases are compelled, after leaving the combustion chamber, to follow a
tortuous course among the water tubes by means of suitable deflectors, and are
collected into an uptake outside the tubes, whence they pass to the funnel.
The annexed drawing shews the general principle of the boiler.
A is the upper cylindrical drum, and B the lower cylindrical drum, which are
joined together by the water tubes C.
The furnace D is underneath the lower drum B, and the products of combustion
pass through the flue E, running through the latter, into the combustion chamber F,
formed by the space between the two drums, and bounded on all sides by the
water tubes C.

page_text: Suitable deflectors G are arranged to compel the gases, after leaving the
combustion chamber, to follow a tortuous course amongst the water tubes C.
After passing amongst the tubes, the gases are collected into the uptake H,
whence they pass away to the funnel J.
The drawing shews straight water tubes & flat ended cylindrical drums.
The tubes may, if desired, be inclined, or of curved form, and the ends of the
drums may likewise be inclined or curved.
The deflectors G may also be arranged in any other suitable fashion.
Having now particularly described and ascertained the nature of my said inveu-
tion, and in what manner the same is to be performed, I declare that what I
-claim is :
An improved water tube boiler, as described above, consisting of two drums,
placed one above the other & connected by water tubes; the furnace arranged
under the lower drum, the latter having a flue running through it, communicating
with the combustion chamber, which is formed by the space between the two drums
above the flue; in combination with suitable deflectors to compel the gases to
follow a tortuous course among the tubes, before they pass to the uptake.
Dated this 19th day of October 1896.
W. R. CUMMINS,
Applicant.