Hydrocarbon-Burning Furnace. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
CHARLES M. GEARING, OF BROWNWOOD, TEXAS, ASSIGNOR OF TWO-THIRDS
TO CHARLES F HADLY AND CHARLES O. HADLY, OF PITTSBURG, PENN-
SYLVANIA.
HYDROCARBON-BURNING FURNACE.
SPECIFICATION forming part of Letters Patent No. 615,445, dated December 6,1898.
Application filed January 29, 1898. Serial No. 668,435. (No model)To all whomz it may concei'n-
Be it known that I, CHARLES M. GEARING, a
citizen of the United States,residing at Brown-
wood, in the county of Brown and State of
5 Texas, have invented certain new and useful
Improvements in Hydrocarbon-Burning Fur-
naces, of which the following is a specifica-
tion, reference being had therein to the ac-
companying drawings, in which-
r o Figure 1 is a vertical sectional view of a
portion of a furnace provided with my un-
proved burner, and Fig. 2 a horizontal sec-
tional view of the same.
It is the object of the present improvements
15 to provide for the more thorough combustion
of the gases derived from the hydrocarbon
fuel employed and also to provide a fire-box
that shall be capable of withstanding very
high temperatures without clogging or burn-
23 ing out the parts, as more fully hereinafter
stated.
Referring to the drawings, a designates a
rectangular metal pan fixed in the masonry
of the bottom of the furnace b and being co-
25 extensive in area with the fire-box thereof.
The inner surface of this pan is lined with
fire-brick sections c, which not only extend
over the entire bottom surface of the pan,
but which also extend above the upper edge
30 thereof, the adjacent edges of the sections
fitting close together to prevent as nearly as
possible the injected oil reaching the pan. It
is practically impossible, however, to fit the
sections so close together as to entirely pre-
35 vent the oil reaching the pan. In fact,it is de-
sirable that slight interstices be left between
the sections, since during the preliminary
operation of the furnace the oil works its
way into the interstices, and, burning therein,
40 leaves a residuum, mostly carbon, which com-
pletely fills the crevices in a short time, there-
by not only rendering the lining practically
impervious to oil, except, of course, in so far
as its porosity admits of the absorption there-
45 of, but also cementing the sections together
and making a solid bottom. It will also be
observed that in a comparatively short time
the oil that is absorbed into the pores of the
fire-brick will be similarly coked or burned,
5o and will thereby render the same practically
non-absorbent.A lining such as I have described has the
advantage of being exceedingly durable, the
refractory nature of the fire-brick being well-
known. The metal pan below is essential to 55
hold the oil until the sections are completely
bound or cemented together and rendered
non-absorbent. With the exception of the
small quantity of residuum that goes to fill
the pores and crevices the entire quantity 6o
of oil injected will be subjected to intense
heat and be completely consumed, leaving
practically no residuum to be cleaned out.
It is evident that if the metal of the pan were
exposed to the heat it would soon burn out 65
and leak oil, and it will also be observed that
if the fire-brick alone were used the oil would
leak between the sections continually, as the
cementing process described will not proceed
without means to hold the oil between the 70
sections while being burned.
The air-supplying pipe c' is embedded in
the masonry of the furnace outside of and
approximately level with the upper edge of
the pan and extending entirely around the 75
same, the inlet end of the pipe entering, pref-
erably, at the front of the furnace. Project-
ing inward from the pipe is a series of nozzles
ci, which project beyond anal rest upon the
upper edge of the pan and are flattened into 8o
broad mouthpieces whose adjacent edges
preferably come together, forming a practi-
cally continuous discharge-opening. These
mouthpieces terminate a little inside the edge
of the pan and rest upon the adjacent layer 85
or course of lining-sections. They open into
a narrow chamber e formed between the two
uppermost layers of fire-brick sections and
extending continuously around the fire-box
and opening unobstructedly into the same 90
and inclining downward toward the center
thereof. The upper course of fire-brick ex-
tends back over the nozzles to near the main
air-pipe and is thereby supported. This ar-
rangement requires no supports for the inner 95
ends of the sections,thereby leaving theycham-
ber e unobstructed.
The construction described in the foregoing
possesses two important advantages. The
metal nozzles are entirely protected from the ico
intense heat, so that they will not fuse and
burn out and clog, and, further, the air-blast
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Gearing, Charles M. Hydrocarbon-Burning Furnace., patent, December 6, 1898; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth514599/m1/2/?rotate=270: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.