Improvements connected with Fire Boxes of Steam Boilers.
Year: 1892

page_text: Date of Application, 18th Mar., 1892
Complete Specification Left, 17th Dec., 1892-Accepted, 25th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements connected with Fire Boxes of Steam Boilers.
I, FRED GRANTHAM BROUGHTON of Elmers End, Beckenham, Kent, Engineer,
do hereby declare the nature of this invention to be as follows :-
My invention relates to a system of raising steam in locomotive, marine, and all
other kinds of boilers by means of petroleum, fish, and all other kinds of oils and
liquified fatty substances.
For the purpose of my invention, I construct the fire box of arch form of fire
brick, or any other suitable substance below the level of the bottom row of tubes,
so as to counteract and regulate the flame. I also place in the fire box, a tray or
false bottom, which tray can rest on the existing fire bars, such tray being made
of cast, wrought, malleable iron or steel, copper, or any other suitable substances.
The herein mentioned tray or false bottom shall be so perforated and arranged as
to allow of a natural draught from all sides of the fire box in order to obtain
sufficient combustion to the oils used; also I build cross sections of walls from-the
bottom of the afore mentioned tray in the fire box; these walls to be composed of
fire-brick, fire clay, rock asbestos, chalk, or any other heat retaining substances,
the said wall to be built up to about the level of the bottom row of tubes.
The spaces between the cross sections aforesaid are to be filled in with asbestos,
or any other heat retaining substances, such quantity to be used according to the
engineer's discretion.
I inject the oils into the fire box by the means of a force pump worked by steam,
also an air pump and steam jet, which air and steam is conveyed into the fire box to
cause a greater combustion, if required. The tubes or outlets from the above
mentioned pump or pumps shall be in the front of foot plates through fire hole
door, or any other part of the fire box as may be deemed necessary. I also arrange
for tubes to pass through the fire box at the fire hole end; these tubes to be
regulated according to the draught required.
The oil pump is so arranged that it can be worked by manual power for the
purpose of getting up steam in the boiler when in shed until there is sufficient
steam to work the oil pump, unless the said locomotives or other boilers are
charged by means of my steam generator for charging boilers, as described under
my previous Patent No. 16793 of the year 1889.
1 1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Fred Grantham Broughton.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Fred Grantham Broughton.
COMPLETE SPECIFICATION.
Improvements connected with Fire Boxes of Steam Boilers.
I, FRED GRANTHAM BROUGHTON of Elmers End, Beckenham, Kent, Engineer,
do hereby declare the nature of my said 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 a system of raising steam in locomotive, marine and all
kinds of boilers by means of petroleum, fish and all other kinds of oils, and liquified
fatty substances.
For the purpose of my invention I construct in the fire box a screen of arch
form of fire brick or any other suitable substance below the level of the bottom

page_text: row of tubes so as to counteract and regulate the flame. I also place in the firebox
a tray or false bottom which tray can rest on the existing firebars; such tray
being made of cast, wrought, malleable, iron or steel, copper or any other suitable
substance. The herein mentioned tray or false bottom shall be so perforated and
arranged as to allow of a natural draught from all sides of the fire box in order to
obtain sufficient combustion to the oils used. I also build cross sections of walls
from the bottom of the afore mentioned tray in the fire box; these walls to be
composed of fire bricks, fire clay, rock asbestos, chalk, or any other heat retaining
substances, the said wall to be built up to about the level of the bottom row of
the tubes.
The spaces between the cross sections aforesaid are to be filled in with asbestos
or any other beat retaining substances such quantity to be used according to the
engineer's discretion.
I inject the oils into the fire box by the means of a force pump worked by steam,
also an air pump and steam jet which air and steam is conveyed into the firebox to
cause a greater combustion if required. The tubes or outlets from the above
mentioned pump or pumps shall be in the front of foot plate through fire hole door
or any other part of the firebox as may be deemed necessary. I also arrange for
tubes to pass through the fire box at the fire hole end, these tubes to be regulated
according to the draught required.
The oil pump is so arranged, that it can be worked by manual power for the
purpose of getting up steam in the boiler when in shed until there is sufficient steam
to work the oil pump unless the said locomotives or other boilers are charged by
means of my steam generator for charging boilers, as described under my previous
Patent No. 16793 of 1889.
My invention will be understood from the annexed drawings.
Figure 1 is a front sectional elevation of a fire box of a tubular boiler of the
locomotive type. Figure 2 an outside front elevation of same.
inside plan view.
Figure 3 an
A is the shell of the boiler of the usual well known construction. B the usual
fire bars therein. C a perforated tray resting thereon. D, D, are screens, of arch
formation, built upon the tray C, the openings being charged with asbestos, or
other fire resisting substance. E, E, are cross sections of walls of fire brick built
up upon the arches to about level with the lower row of tubes F, F, the spaces
between said walls being also charged or filled with loose asbestos in contiguity to
the asbestos of the arches for the passage of air through and between the asbestos
from the tray to support combustion, the air being retarded in passing through the
asbestos and heated by the radiated heat of the walls while in transit.
Gis a pipe with branches H, H, for supplying oil under pressure by the spray
nozzles I, I, from the sides of the fire box. J is an air pump operated by steam 4
from the boiler to force air in from the front of the fire box under pressure. K is
a steam pipe for furnishing steam to the fire box chamber, which steam issues
from a spreading nozzle at right angles to the distribution of the oil for com-
mingling therewith, the oil being sprayed more upon the asbestos than upon the
walls, so that it becomes very much aerated, and in a good condition for combustion.
L, L, are free air holes above the fire door M with a hit and miss slide valve N
to regulate the openings L, L. P is a hand pump for the supply of oil to the
branches H, H, and uozzles I, I, when getting up steam, and this may be put in
conjunction with the pipe R, so that air and oil can be simultaneously forced into
the fire box by the spread nozzle Q by hand until sufficient steam is raised, or of 5
steam being otherwise supplied for the purpose as before mentioned.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The means herein before described of generating steam in locomotive type of 5
steam boilers riz. by arching a combination fire brick and ashestna
thei

page_text: equivalents and filling the interstices with any heat sustaining substance on a tray
in the fire box and below the tubes level, to maintain and utilize the heat imparted
thereto from oil injected thereon with steam and air as described.
Dated this 17th day of December 1892.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said F. G. Broughton.