Cooling and Ventilating Stokeholes and Boiler Compartments of Ships and Utilizing the Hot Air from same.
Year: 1887

page_text: Date of Application, 25th Aug., 1887
Complete Left, 26th Mar., 1888
Complete Accepted, 27th Apr., 1888
Cooling and Ventilating Stokeholes and Boiler Compartments of
Ships and Utilizing the Hot Air from same.
I LACHLAN MCINTYRE 49 Lime Street in the City of London, Engineer, do hereby
declare the nature of this invention to be as follows:-
My invention relates to improvements in cooling and Ventilating Stokeholes and
Boiler compartments of Ships and Utilizing the hot air from same.
For this purpose 1 provide a double cased smokebox for the heated air from
top of uptake to pass through between the inner and outer shells of the smokebox
casing. The above said hot air can either be drawn or forced through said double
casing by motive power and conveyed to the furnaces, or by natural draft to same.
The novelty in this invention is to cool stokeholes and Boiler compartments on board
ships from the excessive heat contained therein while ships are under steam and
utilizing the heated air that arises therefrom all stokehole and Boiler compartments
on board ship.

page_text: COMPLETE DI FUIFICATION.
Cooling and Ventilating Stokeholes and Boiler Compartments of
Ships and Utilizing the Hot Air from same.
1, LACHLAN MCINTYRE 49 Lime Street in the City of London, 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 relates to improvements in the construction and arrangements of a
double cased or jacketed smokebox and uptake. The same may be in such a manner
that the inner and outer shells are utilized as air passages from the top of uptake to
the furnaces also a branch suction pipe or pipes may be connected to the smokebox
casing which can be extended to any part of the boiler compartment most suitable.
The said double cased or jacketed smokebox and uptake being open or exposed to
the atmosphere forms a direct communication to the furnaces. By this means the
hot air that ascends from the stokehole and boiler compartment is drawn or forced
through the air passages by motive power or one or more compressed air jets may
be placed in the funnel or in the air passages but so placed that there orifices may
be upwards in the funnel and downwards in the air passages so as to form a drawing
or a forcing motion for the purpose of creating a currency of air through the air
passages into the furnaces in excess of the natural draft. Or a blast pipe may be
inserted into the funnel from a blower or fan for the purpose of forming a partial
vacuum thereby causing a downward current through the air passages to the
furnaces.
The above arrangement is also suitable for natural draft when the motive power is
not in operation as the furnaces are open or exposed to the atmosphere from the top
of casing. For the better understanding of these improvements are shown in the
accompanying sheets of drawings
Figures I and II are cross and side elevations of a ships stokehole and boiler com-
partment, including front and side view of a single ended marine boiler. Double
cased or jacketed smokebox, uptake, and funnel.
The air passages A extend from the top of the uptake and round the smokebox
casing to the furnaces. The partition B is placed between the tube doors C and is
connected with the air passages to the furnaces. The compressed air jets Dare placed
in the funnel and are connected by pipes and the cock E to the air jets in the air
passages leading to the furnaces.
The branch open ended suction pipe F is connected to the smoke box casing and
extends to the top of the boiler compartment for the purpose of drawing the hot air
not within reach of the uptake.
Figure III shews a plan view of the air jet pipe in the funnel.
Figures IV and V are similar to Figures I and II but shew the blowing or blast
pipe G inserted into the funnel.

page_text: 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
1st. A double cased or jacketed smokebox and uptake open or exposed at the
top to the atmosphere and in direct communication with the furnaces.
2nd. Branch suction open ended pipe or pipes connected to casing and extending
to distant parts of the boiler compartment for drawing hot air not within reach of the
uptake.
3rd. Compressed air jets in the funnel or in the air passages for the purpose of
forming a drawing or forcing motion.
4th. Blowing or blast pipe in the funnel for forming a partial vacuum to cause a
currency of air through the furnaces substantially hereinbefore described.
Dated this 26th day of March 1888.
LACHLAN MCINTYRE.