Spark-Arrester. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
ROBERT F. SWAN, OF MOUNT PLEASANT, TEXAS.
SPARK-ARRESTER.
SPECIFICATION forming part of Letters Patent No. 233,171, dated October 12, 1880.
Application filed August 30, 10. (No model.)To all whom it may concern:
Be it known that I, R. F. SwAN, of Mount
Pleasant, in the county of Titus and State of
Texas, have invented certain new and useful
5 Improvements in Spark-Arresters; and I do
hereby declare the following to be a full, clear,
and exact description of the invention, such
as will enable others skilled in the art to
which it pertains to make and use it, reference
10 being had to the accompanying drawings,
which form part of this specification.
My invention relates to an improvement in
spark-arresters; and it consists in placing in-
side of the stack, just above and below the
15 revolving wheel, a vertical wall, there being a
space left between the inner edges of these
two walls, so that the wheel in revolving will
catch the sparks and throw them outward
against the sides of the stack, and thus cause
20 them to drop into the chamber formed by these
walls.
It further consists in securing to the outer
edge of the wheel two or more vertical arms,
which extend down into the chamber into
25 which the sparks fall,for the purposeof forcing
them around to a discharge-tube, through
which the sparks or cinders may be conducted
to any desired point.
The object of my invention is to form a
30 chamber in the side of the stack, and then by
turning down the edges of each blade of the
revolving wheel form horizontal flanges, which
will catch the sparks as they rise upward and
throw them outward into the chamber, which
35 extends all around the edge of thewheel, where
they will be extinguished.
Figure 1 is a vertical section of my inven-
tion. Fig. 2 is an edge view of the wheel
which is placed in the stack.
40 A represents the stack, which may be of
any desired construction, and which has se-
cured to the inside of its enlarged upper end
the two vertical walls B. The edges of these
two walls reach within a short distance of the
45 upper and lower sides of the revolving wheel
D, which is placed in the stack, and form the
chamber C, into which the sparks are thrown
by the action of the wheel. Extending hori-
zontally across the stack is a rod, F, upon
go which the wheel D is journaled in any suit-
able manner. This wheel is formed like a pro.peller-wheel, and has the inner edge of each
blade turned vertically downward, so as to
form a flange, G. This wheel being placed
just opposite the opening around the inside of 55
the chamber, and being made to revolve by
the upward draft, these flanges catch the ris-
ing sparks and throw them with great force
against the outer side of the chamber. After
these sparks are thrown beyond the edges of 60
the vertical walls B they are entirely beyond
the influence of the upward draft, anti so drop
downward into the chamber C. Where these
flanges are not formed upon the edges of the
blades the wheel exerts but comparatively lit- 65
tie influence upon the sparks so far as ex-
tinguishing them goes, but where the flanges
are formed they serve to catch the sparks and
throw them outward with great force. Also,
secured to this wheel, just above it, is a suitable 70
screen, I, which revolves around with the
wheel inside of the stack and serves to catch
those sparks which may be carried by the blast
up above the wheel.
By attaching the screen to the wheel so that 75
the two revolve together the screen is made
to shake and vibrate in such a manner as to
constantly clear itself of the sparks, and thus
prevent it from being clogged up.
Secured to the lower outer corner of any de- 80
sired number of blades of the wheel are the
arms or projections O, which are made of the
same shape as the bottom of the chamber C,
and which arms or projections, as the wheel
sweeps around, serve to move the cinders and 85
sparks which have been thrown into the cham-
ber around to the discharge-pipe P, through
which pipe the cinders and sparks may be
conveyed to any desired place.
Having thus described my invention, I 90
claim-
1. In a spark-arrester, the revolving wheel
D, having its blades provided with horizontal
flanges upon one of their edges for the pur-
pose of catching the sparks and throwing 95
them outward, substantially as shown.
2. In a spark-arrester, the combination of a
revolving wheel which is placed in the stack
and operated by the draft with a revolving
screen which is secured to and operated by moo
the said wheel, arranged substantially as de-
scribed.
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Swan, Robert F. Spark-Arrester., patent, October 12, 1880; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth170053/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.