US 2538450 A
Description (OCR text may contain errors)
vw w h hfifiv Q I I I l I I 2 SheetsSheet l ENGINE MUFFLER C. L. GARDNER Filed Feb. 16, 1948 Jan. 16, 1951 w/ vw mm Colon L. Gardner INVENTOR.
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Wm/915M Jan. 16, 1951 c. GARDNER ENGINE MUFFLER 2 Sheets-Sheet 2 Filed Feb. 16, 1948 Colon L. Gardner INVENTOR.
Patented Jan. 16, 1951 TATfEiS PATENT oFFicE ENGINE MUFFLER,
:C-olon-L-iGardner, Concord,.N. C. 'Applicat'ionTebruary 16, 1948, Serial No. 8,'64'8 elcGlaim. ,1
This 1 invention:relates generally 'to mufiiers for internal combustion engines, and more particularly to a mufiier in which theexhaust gases 1 are forced to --trave1 through water prior *to an escape thereof into the atmosphere.
It isa'primary object of this invention-topicvide'a muffler whi-ohthe highly heated exhaust gases, -often carrying "burning ----or incandescent particles-of carbonparemade totravel through a "vvaterreservoir, thus quenching the burning particles and-making the internal --combustion--engine *sa'fe ior operation adjacent 'eXt-remelydry and in- 'flamma blemateri'als.
Another objector this invention, ancillary to "thepreceding object, is to provide a=mufiler which 'ma-y be "used "to make automotive vehicles safe "for operation in coal mines and other places where inflammable gases are likely to be encountered, in "barns and -graineries and "other buildings -where dust la'den 'air provides hazard inasmuch as this dust-laden'air often becomes ignited and explodes with terrific *force, "and 1 in other localities where excessivelyhot gases or gasescontaining burning parbonwould-be dangerous.
Another "object of this invention is to provide a muffier for internal combustion engines-which will-reduce the content of obnoxious gases ordinarily' existing in the exhaust from internal combustion engines.
Still another-obj eot of thisinvention is to providea mu'iiler whichvvill reduce the-noise incident "in'the operation of an internal combustion engine to the greatest'extentpossible compatible :with eflicient operationof theengine'that is, to reduce the noise of operation Without causing undue "back p-ressure on the. cylinders of'the engine.
'Itis a still further object oflthisxinvention to employ the surrounding atmospheric airfor coolingthe water; as Well as 'for cooling thegases im- 'mediately above the Water reservoir, this airlcool- 'ing' being accomplished by provision of a, plurality of pipes" leading through. the mother casing.
ZStill .anothenobiect .of-. this inventionlis to. pro- .vide'limprovedfbaifle means which .each ibailie is fiiformed. into. a plurality. of. relativelylin'clined. por- Ltions, the'lowermost portions, that is; the portions .t-immediately abovelthe water.reservoinebeing. incl ine'd-.at..a greater v.anglesto thevertical thanare the portions above .these...lowermostgaortions.
Yet another object of this invention isatoprovide a mufller \vith-iaecoinplement of parts including a water gauge to show the level of the Water in the reservoir, a float valve assembly to control this levelgmeansfacilitatingrthexapplication of chemicals for suitably chemically burdening the Water in the reservoir, and-finally for making the 'muiiler-very easily-cleaned, the last feature being accomplished-by:niaking'the'itop of the muflierremovable and by prcv-idinga-cleaneout, plugainthe Still another-dialect is to provide-a pitchedbr ridged roof for the mufiier "and @to incorporate with this pitchedroof-an-imprmed water trap construction, this water itrap cooperating with the air cooling pipes and theenovel baiile construction to make thismuffler-highlyefiicient and'economical in its-use of-water.
And a lastobject to be mentioned specifically is to provide a inn-filer construction-whichis relatively inexpensive .and ;practicable .to. manufacture," which is -extremeiy safe, simple andconven- 'ient touse, to-maintainand toclean, and which -out intheappendedclainmend illustratedin the accompanying drawings which form .a. material .part of this. application, [and in which:
Figure-iris.averticalseotional View of theassembled mnfilerivith theiloat valweassembly used to control theleveloflthe waterin thelreservoir, portions of themmiiernasing and valve assembly casing beingcshown iii-elevation, to facilitate the illustration ofthelfloat valve construction ,and'to indicate how=theair coolingpipes .are terminally welded to-thesides of -the casing of the muffler;
Figure 2 is a toplplan view oithe structure illustrated -in.-Figure ,1.,.,a; portion of the pitched roof of the inufilerbeing broken away to illustrate theconstruction of the baffle plates as viewed in plan;
Figure 31s a top plan view of the float valve assembly-withthe top-platethereof removed;
"Figure 4 is a threedimensional View of one of the brackets used tosu-pport the valve assembly on the side of the muffler casing; and
:Figure 5. isa horizontal sectional view of an upper portion of the mufiier, the viewbeingtaken on a plane substantially on theline: 5-15, in Figure 1.
vSimilar characters'of reference designate. similar or identical element and portions through- :Referringnowtothe drawings in detail, the
environment wherewith this invention isl-adapted to be" u d 'wiilrinclude an internal combustion engine having an exhaust pipe securable to an inlet I0, and a source of cold water connected to the inlet pipe I2 in the float valve assembly generally indicated by the numeral 14.
This invention envisages inclusion of a muiiler casing I6 which is represented in the drawings as substantially square in cross section, although this peculiar shape is not necessarily adhered to and this invention may be adapted for use with cylindrical and otherwise shaped casings. The casing I6 is provided with a sloping floor I8 having a clean-out plug at the lowest point thereof, and the upper end of the casing is closed by a pitched or ridged roof 22 removably secured to the casing, as indicated by the bolt 24 so as to facilitate the cleaning of the muffler.
A single long bafiie 26 extends from the upper end of the casing downwardly to within a short distance from the floor is, this baflie 26 being bent into a plurality of angularly disposed portions and this baflle is positioned adjacent the inlet I!) so as to direct exhaust gases entering the casing I6 downwardly into the base portion of the casing which in operation will be filled with water and which will be referred to herein as the water reservoir 28.
A plurality of substantially similar baflie plates 30 and 32 are arranged in substantially parallel relationship within the upper portion of the casing I6 and adjacent pairs of said baffles 36 and 32 are connected by top wall structure 34 and the vertical edges of each of the bafiles 3E! and 32 are welded to the adjacent vertical side walls of the casing I6. Since the top wall structure 34 closes the space between integral pairs of baffles 30 and 32, access of gases from the water reservoir upwardly through the casing is restricted to the tubes 36 between adjacent bafiies 30 and 32 which are not connected by wall structure 34. It should be carefully noted that each of these bafiles is comprised of a plurality of portionswhich are bent in zig-zag fashion, with the lowermost portions of the baffles 38 being inclined at greater angles to the vertical than are the lowermost portions of the bafiles 32, thus giving a slightly altered baiiie action immediately above the water reservoir 28.
A plurality of air cooling pipes 38 are terminally welded to the vertical sides of the casing I6 as indicated at these air cooling pipes being disposed above the reservoir 28, and these pipes are cooled by atmospheric air entering from the sides of the casing. A similar construction, involving the use of a plurality of air cooling pipes 42 is used to cool the water in the water reservoir 28. It will be noted that in each case the pipes 38 and 42 are welded internally of the casing I6, and heat is, of course, transferred from the gases above the water reservoir 28 and from the Water in the reservoir 28, through the pipes 38 and 42 to atmospheric air within these pipes.
A pipe 44 is connected by a nipple 46 and the roof 22 so as to facilitate introduction of solvent or other chemicals wherewith the water in the reservoir 28 may be burdened to facilitate the cleaning of the mufiler, the absorption of certain gases and for other purposes.
A water trap generally indicated by the numeral 48 is incorporated with the lower end of a gas exhaust outlet tube 56, this tube extending to the topof the roof 22. The lower end of the tube 50 has an out-turned substantially horizontal flange 52 which is apertured. as at. 5
and which carries an inverted pyramidal basin 56. The upper edges of this inverted basin 55 extend close to the roof 22 and above the level of the flange 52, while the lower end of the basin is apertured as at 58. It will be seen that an effective water trap is thus provided for trapping water carried upwardly by the exhaust gases to the roof 22, and it will be clear that water condensing out of these gases will trickle through the aperture 58 and return to the water reservoir through one or other of the tubes 36.
A sight gauge 66 is incorporated with the wall of the casing It to indicate the level of water in the Water reservoir, and the float valve assembly I4 is connected to this water reservoir by a tube 62, while the casing 64 for the float 66 is mounted on the casing I6 by means of substantially U-shaped brackets 68 which may be welded to the casing 64 and bolted as at Hi to the casing I6. The float chamber or casing 64 communicates with a valve I0 through an aperture I2 in a top wall i4 of the float chamber or casing, and a rocker arm 16 is used to Rink the float E6 operatively with the valve i9, this rocker arm i6 being pivoted on the top wall 174, and a spring I8 is used to urge the valve it into open position when the float I6 falls as a result of the Water reaching too low a level in the reservoir 28. The valve chamber may be of conventional character and will, of course, communicate with the inlet pipe I2, while a top plate for the valve assembly Will be provided so as to make the various parts of the valve assembly of easy access.
The operation of this invention will be clearly understood from the foregoing description of the mechanical details thereof, taken in connection with the drawings and with the recitation of objects sought to be achieved by this invention. It is believed that all the objects recited are amply achieved by this invention and that exhaust gases after being processed by the muffler will escape through the exhaust outlet tube 50 completely quenched of all burning particles and relieved of a large proportion of the noxious gases contained therein.
Minor variations may be made in the exact construction and proportionment of the various elements of this invention without departure from the spirit and scope thereof and the scope of this invention should be determined only in accordance with a proper interpretation of the terminology used in the subjoined claim.
Having described the invention, what is'claimed as new is:
A mufller for connection to an engine exhaust, comprising a casing having an inlet connected to said exhaust, a water reservoir in the bottom of said casing, a bafile directing exhaust gases from said inlet into said reservoir, a plurality of baffles mounted in said casing above said reservoir, a pitched roof on said casing, and a gas outlet tube through the highest part of said roof, said outlet tube extending into said casing and having a water trap on the lower end thereof comprising a substantially horizontal out-turned flange on the outlet tube, apertures in said flange, and an inverted pyramidal basin secured to the periphery of said flange and having its upper edges adjacent said roof and being apertured centrally.
COLON L. GARDNER.
( efe ences on following page) REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 238,905 Huber Mar. 15, 1881 1,214,372 Romberger Jan. 30, 1917 1,339,609 Stinson May 11, 1920 Number Allardice Mar. 25,1941