Spark-Arrester. Page: 2 of 4
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
UNITED STATES PATENT OFFICE.
COTTER STRAW CHALFANT, OF EL PASO, TEXAS.
SPARK-ARRESTER.No. 851,494.
To all whoib 1t2 m a7y CObCer' lb
Be it known that I, COTTER STREWN CIAL-
FANT, a citizen of the United States, and a
resident of El Paso, in the county of El Paso
5 and State of Texas, have invented anew and
Improved Spark-Arrester, of which the fol-
lowing is a full, clear, and exact (escriptiol.
This invention is an improvement in spark
arresters and has, among otlier objects, to
zc provide a device of this cliarac ter which will
enforce the economical consumption of fuel,
eliminate danger and disc omloi t caused by
escaping sparks and cinders, and increase
the efficiency of the locomotive by dispensing
15 with the usual obstructing screens, nettings,
etc. detrimental to good steaming qualities.
Another object is to provide a spark ar-
rester which will not choke the draught in
the smoke box and thereby cause the blowing
20 of smoke and fhe out through the fire box
door into the cab; a condition to be contend-
ed with in the operation of certain torms of
spark arresters hitherto devised.
The above objects are accomplished by my
25 invention, one embodiment of which I is here-
inafter disclosed.
Reference is to be had to the accompany-
ing drawings forming a part of this specifica-
tion, in which similar characters of reference
30 indicate corresponding parts in all the figures.
Figure 1 is a side elevation, partly in sec-
tion, of my improvement as applied to a loco-
motive; Fig. 2 is a front sectional elevation
on the line 2-2 of Fig. 1, looking in the clirc-
35 tion of the arrow, and Fig. 3 is a section on
the line 3-3 of Fig. , lookingin the direc-
ti on of the arrow.
Before proceeding to describe the inven-
tion in detail, the principle thereof will be
40 stated. It is well known that if a mixed
stream of gaseous and solid material, the
latter being in a finely divided state, be in-
troduced into a curved pipe, the solid parti-
cles will tend to collect against and follow
45 along the outer wall thereof. Now, if suit-
able openings are provided along this wall of
the pipe for the escape of the solid particles,
they will, by virtue of their momentum and
the pressure of the gases behind them, pass
5o with a portion of the same through the open-
ings and flow for a considerable distance into
any suitable duct provided for their collee-
tion.. This principle has been adopted in
carrying out my invention, which may gen-
55 erally be stated to consist of a curved smokePatented April 23, 1907.
stack extencding through the smoke box of
the engine to within a short distance of a
properly directed exhaust pipe, said smoke
stack having suitable openings surrounded
by a casing forming a spark chamber and 6o
Conducting the sparks to the ash pan or fire
box, preferably the latter.
The numeral 1 indicates a curved smoke,
I stack as applied to an ordinary form of loco-
motive, said stack passing through the smoke 65
box and terminating at its lower end in a
flarn0g t or funnel end 2, suitably supported by
a braket 1or other form of supporting
mcans. The upper end of the stack above
the smoke box is curved in a reverse direc- 70
tion at 4, in order that the exhaust may be
dischargedd in a perpendicular direction, as in
thMe case of a straight smoke stack.
A (djac t to the funnel end of the smoke
stack, 111(1 in alinement therewith supported 75
by suitable brackets 5 and 5 , is a conical
pipt 6, which I term a petticoat pipe, having
a funnel or ilaring end similar to and extend-
in1 in the saie direction as the f nnel end 2
of the smoke stack 1. I(pipe 6 and funnel 8o
end 2 are separated a slight distance for a
purpose hlereLinaiter imade ajpa lit.
D)irocted to the center of the petticoat pipe
6 is anii tpwar1ily extencing exhaust pipe hav-
ilg a curved nozzle 7, separated a slight dis 85
tance from said pipe. Surrounding the
smoke stack 1 at the outward half of its
curve, and extending from its lower end to a
point preferably above the smoke stack, is a
casino eccentrically arranged, forming a 90
spark chamberenlargecI at one side and taper-
ing downwardly to a point at the lower end
of the stack, as best shown in Figs. 1 and 2.
TIe side of the stack enclosed by the casing
has cut therein a series of spiral slots or open- 95
iags 9, provided with overhanging down-
wardly inclined deflector plates 10 at their
upper edge, said slots and deflector plates
formong traps for the sparks and cinders.
The deflector plates project into the stack quo
and are preferably made integral therewith
by cutting the metal forming the slots 9 at
the bottom and side edges only and bending
it back into the stack opening. At the up-
Iper cui of the elarged side of the spark 105
chamber a cinder pipe 11 loads back to the
ash pali or fire box, following the curve of the
boiler and provided near the point of its con-
nection with the spark chainber with a con-
stricted pass controlled by a damper 12 1 0Specification of Letters Patent.
Application filed April 3, 1906, Serial No, 309,698.
Upcoming Pages
Here’s what’s next.
Search Inside
This patent can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Patent.
Chalfant, Cotter Strawn. Spark-Arrester., patent, April 23, 1907; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth514022/m1/2/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.