Fire Box Page: 2 of 3
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Patented January 17, 1905.
UNITED
STATES
PATENT OFFICE.
GEORGE W. BUTCHER, OF SAN ANTONIO, TEXAS.
FIRE-BOX.
SPECIFICATION forming part of Letters Patent No. 780,088, dated January 17, 1905.
Application filed June 21, 1904. Serial No. 213,557.To all whom V it may concern:
Be it known that I, GEORGE W. BUTCHER, a
citizen of the United States, residing at San
Antonio, in the county of Bexar and State of
5 Texas, have invented new and useful Improve-
ments in Fire-Boxes, of which the following is
a specification.
My invention relates to fire-boxes for loco-
motives and other oil-burning furnaces, and
IC more particularly to the bricking of such fire-
boxes.
The invention aims to protect the most ex-
posed parts of the fire-box from the intense
heat with a view of prolonging the useful-
15 ness of such parts, to obviate concentration
of the blaze-i. e., retard and deflect the
same, so as to spread the heat evenly through-
out the fire-box and use the heating-surface
to the best advantage-and to promote coin-
20 bustion by thoroughly mixing atoms of oil
with atmospheric air and exposing the mix-
ture to a large and highly-heated surface area.
Other advantageous features of the inven-
tion will be fully understood from the follow-
25 ing description and claims when taken in con-
nection with the accompanying drawings,
forming part of this specification, in which-
Figure 1 is a horizontal section taken
through a locomotive fire-box in a plane
30 above my novel bricking. Fig. 2 is a longi-
tudinal vertical section taken in the plane in-
dicated by the line 2 2 of Fig. 1. Fig. 3 is a
transverse section taken in the plane indicated
by the line 3 3 of Fig. .2, and Fig. 4 is a de-
35 tail longitudinal section illustrative of a modi-
fication hereinafter referred to.
Referring by letter to the said drawings,
and more particularly to Figs. 1 to 3 thereof,
A is the front wall, and B B the side walls, of
40 my novel bricking. The wall A is an imper-
forate wall of fire-brick and is built against the
tube-sheet a about the proportional height
illustrated in Fig. 2, so as to protect the said
tube-sheet from direct contact with the in-
45 tense heat. The side walls B B are built
against the side sheets b, covering the mud
ring, and when desired may extend above the
same. The said side walls B, like the front
wall A, are formed of fire-brick, and they
5o have for their purpose to protect the said sidesheets 1 from direct contact with the intense
heat present in the fire-box. C is the inner
pan of the fire-box, which is designed to ex-
clude the atmospheric air except at the
points hereinafter described. The said pan 55
is by preference made up of a metal frame
C' and a lining D, of fire-brick, arranged
on the frame with a view of protecting the
same from the intense heat, and it is provided
with openings E and F for the admission of 6o
air, the opening E being arranged at the rear
end of the pan and the opening F immediately
in rear of the rearward perforated wall G, as
best shown in Fig. 2. The metal frame C' of
the inner pan serves, as will be readily ob- 65
served, to support the bricking of the fire-box.
The wall G, which is of fire-brick, extends
transversely entirely across the fire-box, and
between it and the imperforate wall A is ar-
ranged a second perforated wall H, also of fire- 70
brick, the perforations of which may be ar-
ranged in alinement or out of alinement with
those of the wall G, as desired. In virtue of the
arrangement of the walls G in the positions de-
scribed it will be observed that the flame from 75
the burner, which is generally located in the
rear portion of the fire-box, is retarded and
deflected, and the heat is thereby spread more
evenly throughout the fire-box, and the heat-
ing-surface of the latter is utilized to the best 8o
advantage. In this connection it will be no-
ticed that the space I between the perforated
wall H and the imperforate wall A serves as
a chimney for the flames and hot gases which
enter it, and hence a portion of the heat is 85
permitted to rise directly to the flues of the
boiler, while the remainder thereof is thrown
back or caused to recoil and fill the box with
heated gases and flame equally throughout its
area. Moreover, it will be observed that by 90
arranging the lower openings of the walls U
H in a staggering manner and the openings
in the uppermost tiers of said walls in aline-
ment, as shown in Fig. 3, the gases will pass
freely through the upper openings of the 95
walls into the upper part of the space I and by
so doing will create a draft in the said space,
which in turn will draw the gases through the
staggered lower openings of the walls and thor-
oughly mix and heat the same. The thorough rooNo. 780,088.
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Butcher, George W. Fire Box, patent, January 17, 1905; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth510588/m1/2/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.