Smoke Prevention and Combustion of Gases in all Kinds of Furnaces for Heating and Raising Steam.
Year: 1899

page_text: Date of Application, 1st Nov., 1899
Complete Specification Left, 21st Feb., 1900-Accepted, 19th May, 1900
Smoke Prevention and Combustion of Gases in all Kinds of Furnaces
for Heating and Raising Steam.
I; WILLIAM MAYER, Morwell House, Oxhill Road, Dumbarton, Scotland, Foundry
Manager, do hereby declare the nature of this invention to be as follows:-
The drawing berewith produced shows my arrangement for smoke prevention,
and combustion of gases, for all kinds of heating and steam raising furnaces.
The space, marked A, at the bottom of the fire door or doors is open, and oblong
to which are fitted two adjustable shutters, BB, to lift by chain, or otherwise,
vertically, for the purpose of admitting sufficient air into the fire, or furnace, to
cause combustion of the gases. On the other hand, the fire bars, marked C, are
made extra, or triple deep, and extend downwards in the ash space 1, by this
means, the air, which is always passing through them into the fire, or furnace,
is heated and rarefied.
Dated thie 30th day of October 1800
WILLIAM MAYER.
Smoke Prevention and Combustion of Gases in all Kinds of Furnaces
for Heating and Raising Steam.
I, WILLIAM MAYER, Morwell House, Oxhill Road, Dumbarton, Scotland, Foundry
Manager, 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 drawing sent with the Provisional Specification Form B Fig. I, with
two additional drawings now sent containing Figs. 2-3-4 and 5, shows my
invention for smoke prevention. Fig. I is a front elevation of a boiler furnace
with the fire door in halves, having an oblong space A between the fire doors
and the dead plate, which latter carries the fire bars C. The space A forms a
portway capable of admitting sufficient air to the fire or furnace to cause com-
bustion of the gases, & the size of the portway A is regulated by adjustable
shutter or shutters BB. The shutter or shutters work vertically in a sheath cast
on the fire door with sufficient clearance to allow them to work up and down freely
as required, and are held in position by a small link chain attached to a pin in
the shutter or shutters, & by another pin in the door, thus regulating the portway
& increasing & diminishing the passage of air as may be found necessary. The
width of the fire doors controls the width of the air port A. The fire bars C are
very deep & heavy as shown by scale on the drawing and hang downwards into the

page_text: ash space D, and are so made to keep them rigid in their proper places, to prevent
them from twisting and going round on the back with the heat, and to keep
the air, entering the fire through the fire bars, in the most suitable condition for
combustion. Fig. 2 shows the position of the adjustable shutters BB in each
half of the fire door, one of which is up to the full thickness of the portway, and
the other is close down on to the dead plate E. Figs. 3 and 4 are a section of
Fig. 2 through yy and shows a section of the guiding sheath F. Fig. 5 is a
section of Fig. 2 through XX and shows a section of the fire doors, and the
sheath FF, in which the adjustable shutters BB work.
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
1st. The oblong space or portway at the bottom of the fire doors.
2nd. The adjustable shutters and method of adjusting the same.
3rd. The very deep & heavy fire bars.
Dated this Twentieth day of February Nineteen hundred.