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Патент USA US3031834

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May l, 1962
B. F. COURT
ENGINE MUFFLER
Filed April 3, 1958
3,031,824
United States Patent O " ICC
2
1
3,031,824
Benjamin F. Court, 539 Dayman St., Long Beach, Calif.
Filed Apr. 3, 1958, Ser. No. 726,220
3,031,824
Patented May 1, 1962
directly through one of the baifling tubes. The exhaust
gases thus move through a tortuous passage and are con
ENGINE MUFFLER
Itinuously trapped, retarded and mufñed by passing through
6 Claims. (Cl. 55--217)
relatively short- tubes such as 4, 6, 8, etc. The tubes are
all substantially identical in construction and the walls
of the tubes are provided with holes or openings 9 through
This application is a continuation in part of my'co
pending application on Engine Muiìler, Serial Number
which the exhaust gas can pass.
The tubes are also
loosely packed with-asbestos as indicated at 10. This
asbestos packing of the tubes 4, 6, 8, etc., further pro
701,007, tiled December 6, 1957, now abandoned.
This- invention relates to an engine muñier, and particu-' 10 vides a baffling or deñecting action on the exhaust gases,
as will be evident.
larly for the engine of vehicles, the purpose being to» more
Adjacent the intake end of the housing 1, I provide a
eñectively muñie the engine exhaust noises and also to
pair of bafñes 11 and 12 which are spaced from the end
iìlter or strain out the various entrained solids in the
wall 13 of the housing 1. Within the end wall 13 I pro
exhaust gases so that these solids are not continuously
15 vide ports or openings 14 of which I have here shown
blown in‘to the air.`
two. These ports or openings are controlled by a thermo
Another object of my invention is to provide a novel
engine muñler in which a means is provided to admit
static valve 15 which, when the housing 1 is cold, is
seated in the opening 14. A metallic bellows 16 is
outside air to the muñier for the purpose of mixing this
mounted on the stem 17 of the valve 15 and the bellows
added air to the exhaust gases, for the purpose of diluting
the gases and thus reducing the noxious qualities of the 20 is also attached to a frame 18 at one end thereof, which
frame is secured to the end wall 13 of the housing 1. As
exhaust gases at the outlet of the muiller. _
the exhaust gases pass the thermal unit 16 this thermal
Another object is to provide a simple, effective, and
unit will expand and will lift the valve 15 off of its seat
relatively inexpensive muñler which has the above de
ñned qualities.
14, thus permitting fresh outside air to enter the housing
Still another object of my invention is to provide a 25 1 and admix with the exhaust gases which are moving
through the passage 19 between the bañie 12 and the end
means of burning the exhaust gases in the mufñer, these
wall 13. Thus fresh uncontaminated air is drawn into
reburned gases reducing the carbon monoxide content of
the mufiler and when mixed with the exhaust gases will
the gas emitted by an internal combustion motor, the
tsomewhat dilute these gases and reduce the noxious effect
exhaust gases being ignited by continuously glowing elec
30 thereof.
trical coils positioned within the muffler.
A freely rotating fan 20 may be mounted in the intake
Other objects, advantages and features of invention may
pipe 2 adjacent to the muffler 1. This fan is rotated by
appear from the accompanying drawing, the subjoined
detailed description and the appended claims.
In the drawing:
the exhaust gases and tends to mix and distribute the
gases more effectively at the entrance to the muñier 1 so
FIGURE 1 is a longitudinal sectional view of my 35 that the exhaust gases spread throughout the diameters of
the muñler and will thus tend to move outwardly into the
muñler.
passages 19, as well as centrally into the muñier, and
F ÉICÍURE 2 is a sectional view taken on line 2_2 of
I
.
.
will thus more effectively distribute the gas and also
mufñe the sound of the same.
FIGURE 3 is a transverse sectional view of one of the
burners within the mufñer.
F1ICiìICìURE 4 is a sectional view taken on line 4-4 of
FIGURE 5 is a fragmentary transverse sectional view
on an enlarged scale of one of the thermostatic valves
40
Mounted within the housing 1 of the muffler, and pref
erably arranged between the groups of short cylinders 4,
-I provide a frame 21 which is fixedly attached to the in
side of the housing. A plurality of sockets 22 are se
cured to the frame 21 and each of these sockets is adapted
to receive a glow heater, the coil 24 of which is caused to
in the muñier.
Referring more particularly to the drawing, my mufller 45 glow by the passage of electric current therethrough. A
baffle 25 is provided on each of the heating or ignition
includes an elongated cylinder-like housing 1 which is
elements 23 so that the exhaust gases, while passing longi
flattened transversely, as shown in FIGURE 2, although
tudinally through the mutller, are trapped or directed in
if desired the housing may be truly cylindrical in shape.
wardly against the heated coil 24 to ignite these gases.
An intake pipe 2 extends into one end of the housing.
The exhaust gases enter the housing 1 through the pipe 2 50 The exhaust gases which pass through the exhaust pipe 2
and thence into the muiiler housing 1 contain a large
and are emitted through the pipe 3 and thence into the
atmosphere in the usual manner. In order that the ex
quantity of carbon monoxide, and these exhaust gases are
mixed with fresh air which is inducted into the muñier
haust sounds of the engine may be muñled I provide a
through the thermal valves 15, thus providing a com
plurality of relatively short cylinders 4 within the housing
1. These short cylinders are arranged in groups longi 55 bustible mixture which is ignited by the burners 23 as
tudinally of the housing 1 and are spaced so that some
the gases pass over these burners while moving from one
of the gases will pass the groups of tubes 4, while other
end to the other of the muffler. The burned residue then
parts of the exhaust gases will pass through the tubes.
passes through the various baille tubes 4 which are ar
Thus spaces 5 are provided through which the exhaust
ranged within the muñler and between the burners 23 and
gases may freely pass, and directly opposite these free
the outlet of the mufñer. This additional burning of the
passages 5 I provide the adjacent group of tubes 6 which,
exhaust gases reduces the carbon monoxide content of
being directly aligned with the passages 5, will receive a
the gas and reduces eye irritation and other harmful re
major part of the exhaust gases therein, but again certain « actions. An asbestos cover 26 is provided around the
parts of the exhaust gases will pass through the adjacent
muñler housing 1 to dissipate the heat within the muñler.
passages 7. Again the adjacent sets of tubes 8 are posi 65
A port hole cover 27 is also provided through the housing
tioned opposite the passages 7 to receive the gases, and
1 of the muTñer to permit access to the heating elements
this construction continues throughout the length of the
23 so that these elements may be replaced, as necessary.
mufñer housing. 'I'hus there are provided groups of tubes
The necessary current to supply the coils 24 is conducted
4, 6, 8, etc., through which a part of the exhaust gases
will pass, and adjacent openings, spaces or ports 5, 7, etc., 70 to each of the heating elements 23 through the wire 28
which extends from a suitable manual switch (not shown),
through which the exhaust gases may pass without going
3,031,824.>
and also from the usual battery of the vehicle which also
is not shown.
. Having described my invention, I claim:
1. A mufiler comprising an elongated housing, an in
take pipe extending into one end of the housing, an outlet
through the wall thereof, a bañle within the housing ad
jacent the intake pipe, said baille being spaced from the
pipe extending from the end of the housing opposite the
within said housing arranged between adjacent groups of
said tubes, said baille deñecting part of the gases around
the thermally controlled valve.
intake pipe, a plurality of groups of tubes positioned with
vin the housing and spaced longitudinally of the housing
and between the intake and exhaust pipes, said tubes
having openings at both ends and being spaced from each
other in each group to permit gases to flow around each
tube as well as through the tubes, and each tube having
wall of the housing, said housing having an air intake port
therein adjacent said baille and a thermally controlled
valve seated in said ports, and electrical heating means
5. A -mulïler comprising an elongated housing, an in
take pipe extending into one end of the housing, an out
let pipe extending from the housing, a plurality of groups
of tubes positioned within the housing and arranged be
holes through the Wall thereof, a baille within the housing
tween the intake and exhaust pipes, said tubes being open
adjacent the intake pipe, said baille being spaced from the
at both ends and spaced from each other in each group to
Wall of the housing, said housing having an air intake port 15 permit gases to flow around each tube as well as through
therein adjacent said baille and a thermally controlled
the tubes, and each tube having holes through the wall
valve seated in said port, said bathe detlecting part of the
thereof,
said housinghaving an air intake port therein
gases around the thermally controlled valve.
and a thermally controlled valve seated in said port, a
2. A muñîer comprising an elongated housing, an in
frame within and extending across said housing, said
take pipe extending into one end of the housing, an out 20 Iframe being positioned between adjacent groups of tubes
let pipe extending from the end of the housing opposite the
and a plurality of electrical glow elements mounted on
intake pipe, a plurality of groups of tubes positioned with
said frame.
in the housing and arranged between the intake and ex
6. A muñler comprising an elongated housing, an in
haust pipes, said tubes being open at both ends and
take pipe extending into one end of lthe housing, an outlet
spaced from each other in each group to permit gases to 25 pipe extending from the end of the housing opposite the
tlow around each tube as well as through the tubes, and
intake pipe, a plurality of groups of tubes positioned
. each tube having holes through the wall thereof, and
Within the housing and spaced longitudinally of the hous
electrical heating means within said housing arranged be
tween adjacent groups of said tubes and spaced trans
ing and between the intake and exhaust pipes, said tubes
having openings at both ends and are spaced from each
30 other in each group to permit gases to tlow around each
3. A muhler comprising an elongated housing, an in
tube as well as through the tubes, and each tube having
take pipe extending into one end ofthe housing, an out
holes through the wall thereof, a baille within the hous
let pipe extending from the end of the housing opposite
ing adjacent the intake pipe, said baille being spaced from
the intake pipe, a plurality of groups of tubes positioned
the wall of the housing, said housing having an air intake
within the housing and arranged between the intake and 35 port therein adjacent said baille and a thermally con
exhaust pipes, said tubes being open at both ends and
trolled valve seated in said ports, a frame within and ex
spaced from each other in each group to permit gases to
tending across said housing, said frame being positioned
flow around each tube as well as through the tubes, and
between adjacent groups of tubes and a plurality of elec
each tube having holes through the wall thereof, said
trical glow elements mounted on said frame.
housing having an air intake port therein and a thermal 40
valve seated in said port, and electrical heating means
References Cited in the file of~ this patent
versely of the housing.
within said housing arranged between adjacent groups
of said tubes, and spaced transversely of the housing.
4. A muñler comprising an elongated housing, an in
take pipe extending into one end of the housing, an out
let pipe extending from the end of the housing opposite
the intake pipe, a plurality of groups of tubes positioned
within the housing and spaced longitudinally of the hous- l
ing and between the intake and exhaust pipes, said tubes
being open at both ends and spaced from each other in 50
each group to permit gases to flow around each tube as
well as through the tubes, and each tube having holes
UNITED STATES PATENTS
1,716,481
-Bilsky ______________ __ June 11, 1929
1,875,024
Kryzanowsky _-2 _____ __ Aug. 30, 1932
2,038,567
Ittner ______ ....‘_.._» ____ __ Apr. 28, 1936
2,203,554
2,296,792
2,553,326 '
2,795,103
2,829,730
Uhri et al. ___________ _- June 4,
Kester ______________ __ Sept. 22,
Manning ..-___L_______ _-'May 15,
Jenison _____________ .__ June 11,
Barkelew _____________ __ Apr. 8,
2,845,882
Bratton _, ____________ _- Aug. 5, 1958
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