A Portable Furnace Bridge.
Year: 1891

page_text: Date of Application, 24th Feb., 1891
Complete Specification Left, 21st Oct., 1891-Accepted, 24th Feb., 1892
PROVISIONAL SPECIFICATION.
A Portable Furnace Bridge.
GEORGE LLOYD MORGAN S.S. "Holland" % National Steamship Co. Royal
Albert Docks London E. Marine Engineer do hereby declare the nature of this
invention to be as follows:-
To consist of a hollow box, made of a suitable material, having apertures on one
side of same. Said box to form a bridge, and to be fastened on a cast iron seating
or bridge-plate, the same having apertures immediately under the hollow porticu of
said bridge; thus establishing or forming a connection between a portion of the air
in the ash-pit-duly heated in transit through the aforesaid bridge-and the
combustion chamber.
As a means to show how I propose to carry out my invention I furnish drawings
the corresponding parts of which are marked by the same letters throughout.
A being an oblong, hollow box having apertures on the one side i.c. the side in
or nearest to the combustion chamber.
B forms the bridge-plate, upon which the bridge rests, and having apertures
through it inmediately under the hollow portion of the bridge. C represents the
ash-pit, and D the furnace or fire space.
Fig. 1 shows a side elevation.
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5
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front elevation of A.
plan of bottom of A.
back elevation of A.
a perspective view of B.
Briefly the action may be said to be as follows. A portion of the cool air passing
through the ash-pit C will be induced to pass through the bridge-plate B, and into
the bridge A, and in transit become heated, and escaping into the combustion
chamber through the apertures shown in Fig. 4, thereby uniting in a duly heated.
state with the gases formed by combustion and therefore assisting in producing a
more perfect state of combustion and a consequent economy of combustible.
Dated this 17th day of February 1891.
GEO. LL. MORGAN,
Applicant.
COMPLETE SPECIFICATION.
A Portable Furnace Bridge.
GEORGE LLOYD MORGAN % Thos. Morgan "Myrtle Castle" Llanelly South
Wales Marine 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 object of my invention is to provide a bridge, possessing the advantage of
being portable, easy of removal or adjustment, and also as a means of preventing
the undue formation of smoke.
The manner in which I propose to attain the same object, is by means of a hollow
oblong box, or any other form which may be found most convenient for the afore-
said box or bridge and made of a suitable material, so arranged as to allow a
certain quantity of air from the ash-pit to pass through the bridge and into the
combustion chamber.
To show more clearly how I propose to carry out my invention, I refer to the
Pill

page_text: drawings "left" with my Provisional Specification, the corresponding parts of
which are marked by the saine letters throughout.
A being a hollow oblong box which forms the bridge, having apertures on the
one side of same i.e. the side in, or, nearest to the combustion chamber.
B forms the bridge-plate upon which the bridge A stands or rests, and having
apertures through it immediately under the hollow portion of the aforesaid
bridge A. C represents the ash-pit and D the furnace or fire-space.
Fig. 1 shows a side elevation of A, B, C, D.
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front elevation of A.
3
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plan of bottom of A.
4
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back elevation of A.
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perspective view of B.
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"2
A certain quantity of the air upon entering the ash-pit C, will be induced, by
virtue of the heat, to pass through the apertures in the bridge-plate B and into the
bridge A, escaping into the combustion chamber through the apertures in back of
bridge A that is to say-through the side in, or, nearest to the combustion
chamber, as represented by the arrows at A in side elevation of bridge; thereby
uniting with the unconsumed gases of combustion and assisting in the prevention of
smoke. Thus producing a more perfect combustion and a consequent saving
of fuel.
The aperture at bottom of bridge-plate B as shown in Fig. 2 and 5, is for the
purpose of cleaning out the bottom of combustion chamber, should there be any
accumulation of cinder, ash or soot; and also in the event of the boiler leaking
badly, to allow the water to escape through the ash-pit C, but under ordinary
working conditions the aforesaid aperture will be covered by a wrought or cast-
iron shield, which can be easily removed when required.
The material of which I propose to manufacture the aforesaid bridge A, being
cast-iron or cast-iron chilled.
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. Portability and labor-saving, as compared with the ordinary fire-brick
bridge, as by means of my invention the bridge can be taken out intact, and in a
very short space of time, whereas, with the fire-brick bridges it takes considerable
time both to build up or to take down, the taking down invariably means the
destruction of the bricks.
2nd. The non-adhesion of clinker as compared with fire-brick bridges, and there-
fore facilitating the rapid cleaning out of the fires, and being also less injurious to
the sides of furnaces than fire-brick.
3rd. The prevention of smoke and a consequent economy of combustible, by
reason of the admission of air duly heated in circulating through the bridge, thus
preventing the rapid burning away of the metal of which it is composed, and also
possessing the advantage of supplying air at a not too low temperature into the
combustion chamber.
Deted this 30th day of January 1899
GEO. LL. MORGAN,
Applicant.