US2512155A - Muffler with plural perforated conical baffles - Google Patents
Muffler with plural perforated conical baffles Download PDFInfo
- Publication number
- US2512155A US2512155A US77376A US7737649A US2512155A US 2512155 A US2512155 A US 2512155A US 77376 A US77376 A US 77376A US 7737649 A US7737649 A US 7737649A US 2512155 A US2512155 A US 2512155A
- Authority
- US
- United States
- Prior art keywords
- housing
- muffler
- baffles
- perforated conical
- conical baffles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
Definitions
- This invention relates to a muffler for internal combustion motors.
- Another object of the present invention is to provide a muffler for a vehicle motor which will effectively muiiie the exhaust at a minimum of back pressure.
- Figure 1 is a longitudinal, sectional view of the mufller
- Figure 2 is a cross-sectional view taken on the line 2--2 of Figure 1.
- the numeral I designates an elongated cylindrical shaped housing which is preferably formed of heavy sheet metal and whose ends are crimped inwardly.
- the circular end plates 2, 3 which are fitted within the ends of the housing and their margins are preferably turned outwardly and welded to the inwardly turned ends of the housing.
- an inlet pipe 4 Secured to the plate 2 there is an inlet pipe 4 which is connected into the exhaust of the motor and secured to the end plate 3 there is a tail pipe 5 which may be straight but which, in the present illustration, is downwardly directed at its discharge end to deflect the exhaust downwardly and away from the brake drums or wheels of the vehicle.
- baffles are formed of heavy sheet metal and are frusto conical in shape with their outer ends fitted within the corresponding ends of the housing and with their inner, or small, ends adjacent or preferably telescoping, as shown. These adjacent ends may be welded or otherwise secured together so that they will be maintained in a central position relative to the housing.
- bafiles 6 and l are provided with the perforations 8 and. 9 approximately throughout their area.
- the exhaust gases pass from the motor through the inlet pipe 4 into the baffie 6 and thence through the perforations 8 thus being broken up into a plurality of streams and pass into the housing around the baflles and thence inwardly through perforations 9 into the bailie I thus being again broken up into a plurality of streams and pass thence out through the tail pipe.
- This baffling of the stream of exhaust gases minimizes the noise of the exhaust but, at the same time, reduces the back pressure to a minimum thus increasing the efiiciency of the motor.
- the mufiier as a whole is composed of heavy gauge steel sheet construction not only as to the housing but also as to the bafiles and the intake and tail pipes, said parts being all securely welded together for strength to th end that there will be no parts which can come loose and blow out in the normal operation of the motor.
- a mufiler for internal combustion motors comprising, a housing which is cylindrical from end to end and which is formed of sheet metal and at both ends crimped inwardly, circular end plates which are fitted within the ends of the housing with their margins turned outwardly and welded to the inwardly crimped ends of the housing, an inlet pipe adapted to be connected to the exhaust of the motor and secured to one of said end plates and a tail pipe secured to the other end plate, two baflies within the housing formed of sheet metal and frusto-conical shaped with their larger ends fitted closely within the corresponding ends of the housing and with their inner, or smaller ends, adjacent each other, said smaller ends being secured together so that they will be retained in a center position relative to the housing, said bafiles being provided with perforations approximately throughout the area thereof.
Description
June 20, 1950 a. c. HILL MUFFLER WITH PLURAL PERFORATED CONICAL BAFFLES Filed Feb. 19, 1949 3mm m Patented June 20, 1950 OFFICE MUFFLER WITH PLURAL PERFORATED CONIOAL BAFFLES Gordon 0. Hill, Houston, Tex.
Application February 19, 1949, Serial No. 77,376
1 Claim. 1
This invention relates to a muffler for internal combustion motors.
It is an object of the invention to provide a muffler specially designed for use in connection with the motors of trucks, buses and heavy motor vehicles although it may be designed for use on automobiles and similar vehicles.
Another object of the present invention is to provide a muffler for a vehicle motor which will effectively muiiie the exhaust at a minimum of back pressure.
It is a further object of the invention to provide a mufiler of the character described which eliminates all cross baffle plates so that there are no parts that are liable to become looseand obstruct the exhaust or blow out.
It is a still further object of the invention to provide a muiiler which consists of a cylindrical housing with two frusto-conical baiiles therein whose small ends meet and are united with their large ends fitted closely within the respective ends of the housing said baffles being perforated approximately throughout their areas.
Other objects and advantages will be apparent from the following specification which is illustrated by the accompanying drawings, wherein:
Figure 1 is a longitudinal, sectional view of the mufller, and
Figure 2 is a cross-sectional view taken on the line 2--2 of Figure 1.
Referring now more particularly to the drawings, the numeral I designates an elongated cylindrical shaped housing which is preferably formed of heavy sheet metal and whose ends are crimped inwardly.
At the ends of the housing there are the circular end plates 2, 3 which are fitted within the ends of the housing and their margins are preferably turned outwardly and welded to the inwardly turned ends of the housing.
Secured to the plate 2 there is an inlet pipe 4 which is connected into the exhaust of the motor and secured to the end plate 3 there is a tail pipe 5 which may be straight but which, in the present illustration, is downwardly directed at its discharge end to deflect the exhaust downwardly and away from the brake drums or wheels of the vehicle.
These pipes 4 and 5 are welded to the end plates 2 and 3.
Within the housing I there are the baffles 6 and "I.
These baffles are formed of heavy sheet metal and are frusto conical in shape with their outer ends fitted within the corresponding ends of the housing and with their inner, or small, ends adjacent or preferably telescoping, as shown. These adjacent ends may be welded or otherwise secured together so that they will be maintained in a central position relative to the housing. These 2 bafiles 6 and l are provided with the perforations 8 and. 9 approximately throughout their area.
The exhaust gases pass from the motor through the inlet pipe 4 into the baffie 6 and thence through the perforations 8 thus being broken up into a plurality of streams and pass into the housing around the baflles and thence inwardly through perforations 9 into the bailie I thus being again broken up into a plurality of streams and pass thence out through the tail pipe.
This baffling of the stream of exhaust gases minimizes the noise of the exhaust but, at the same time, reduces the back pressure to a minimum thus increasing the efiiciency of the motor.
The mufiier as a whole is composed of heavy gauge steel sheet construction not only as to the housing but also as to the bafiles and the intake and tail pipes, said parts being all securely welded together for strength to th end that there will be no parts which can come loose and blow out in the normal operation of the motor.
The drawings and description are illustrative merely while the broad principle of the invention will be defined by the appended claim.
What I claim is:
A mufiler for internal combustion motors comprising, a housing which is cylindrical from end to end and which is formed of sheet metal and at both ends crimped inwardly, circular end plates which are fitted within the ends of the housing with their margins turned outwardly and welded to the inwardly crimped ends of the housing, an inlet pipe adapted to be connected to the exhaust of the motor and secured to one of said end plates and a tail pipe secured to the other end plate, two baflies within the housing formed of sheet metal and frusto-conical shaped with their larger ends fitted closely within the corresponding ends of the housing and with their inner, or smaller ends, adjacent each other, said smaller ends being secured together so that they will be retained in a center position relative to the housing, said bafiles being provided with perforations approximately throughout the area thereof.
GORDON C. HILL.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,088,576 Compo Aug. 3, 1937 FOREIGN PATENTS Number Country Date 249,989 Great Britain Apr. 8, 1926 382,418 Great Britain Oct. 27, 1932
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77376A US2512155A (en) | 1949-02-19 | 1949-02-19 | Muffler with plural perforated conical baffles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77376A US2512155A (en) | 1949-02-19 | 1949-02-19 | Muffler with plural perforated conical baffles |
Publications (1)
Publication Number | Publication Date |
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US2512155A true US2512155A (en) | 1950-06-20 |
Family
ID=22137700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US77376A Expired - Lifetime US2512155A (en) | 1949-02-19 | 1949-02-19 | Muffler with plural perforated conical baffles |
Country Status (1)
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US (1) | US2512155A (en) |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1247749B (en) * | 1961-11-16 | 1967-08-17 | Berliet Automobiles | Exhaust silencers for internal combustion engines |
US3690406A (en) * | 1970-12-04 | 1972-09-12 | Leopold Weiss | Exhaust noise silencer |
US3823743A (en) * | 1970-11-06 | 1974-07-16 | Dunlap Holdings Ltd | Pressure reducing device |
US4371053A (en) * | 1980-03-17 | 1983-02-01 | Hills Industrie Limited | Perforate tube muffler |
WO1990004706A1 (en) * | 1988-10-21 | 1990-05-03 | Donaldson Company, Inc. | In-line constricted sound-attenuating system |
US5004068A (en) * | 1988-12-06 | 1991-04-02 | Ebara Corporation | Muffler |
EP0808694A1 (en) * | 1996-05-21 | 1997-11-26 | Yotaro Taga | Silencer mechanism for use in an impact wrench |
US5892186A (en) * | 1997-11-03 | 1999-04-06 | Flowmaster, Inc. | Muffler with gas-dispersing shell and sound-absorption layers |
US20060043236A1 (en) * | 2004-09-02 | 2006-03-02 | Campbell Thomas A | Integrated axially varying engine muffler, and associated methods and systems |
US20060071123A1 (en) * | 2004-09-27 | 2006-04-06 | Nguyen Phuong H | Automatic control systems for aircraft auxiliary power units, and associated methods |
US20060102779A1 (en) * | 2004-10-26 | 2006-05-18 | Campbell Thomas A | Dual flow APU inlet and associated systems and methods |
US20060168968A1 (en) * | 2005-02-03 | 2006-08-03 | Edward Zielinski | Systems and methods for starting aircraft engines |
US7159692B1 (en) * | 1999-10-11 | 2007-01-09 | Silentor Holding A/S | Silencer |
US20070051557A1 (en) * | 2005-09-08 | 2007-03-08 | Chih-Kuang Chang | Automobile exhaust pipe assembly |
US20070227811A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20070227809A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20070227810A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20070267540A1 (en) * | 2002-10-22 | 2007-11-22 | Atkey Warren A | Electric-based secondary power system architectures for aircraft |
US20080023262A1 (en) * | 2006-07-28 | 2008-01-31 | Denso Corporation | Air-intake apparatus |
US20080078863A1 (en) * | 2006-09-25 | 2008-04-03 | The Boeing Company | Thermally compliant APU exhaust duct arrangements and associated systems and methods |
US20080190689A1 (en) * | 2007-02-12 | 2008-08-14 | Ballard Ebbin C | Inserts for engine exhaust systems |
US7549510B2 (en) * | 2006-03-29 | 2009-06-23 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20090321181A1 (en) * | 2007-02-12 | 2009-12-31 | Ballard Iii Ebbin C | Inserts for engine exhaust systems |
US8256569B1 (en) | 2010-10-04 | 2012-09-04 | Huff Dennis L | Exhaust sound attenuation device and method of use |
US20120273298A1 (en) * | 2011-04-29 | 2012-11-01 | GM Global Technology Operations LLC | Silencers for air conditioning systems |
US8657227B1 (en) | 2009-09-11 | 2014-02-25 | The Boeing Company | Independent power generation in aircraft |
US8738268B2 (en) | 2011-03-10 | 2014-05-27 | The Boeing Company | Vehicle electrical power management and distribution |
US20150068834A1 (en) * | 2013-09-08 | 2015-03-12 | Michael Wayne Barrett | Resonance Generating Muffler |
US20160010524A1 (en) * | 2012-02-07 | 2016-01-14 | William Lee Bartlett | Muffler For Automobile |
US11242783B1 (en) | 2021-06-30 | 2022-02-08 | Terrance Chen | Sound deflecting muffler |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB249989A (en) * | 1925-02-25 | 1926-04-08 | Douglas Motors Ltd | Improvements in silencers for internal combustion engines |
GB382418A (en) * | 1931-10-21 | 1932-10-27 | Gabriel John Hannen | Improvements in or relating to silencers for internal combustion engines |
US2088576A (en) * | 1936-07-24 | 1937-08-03 | Robert W Compo | Muffler |
-
1949
- 1949-02-19 US US77376A patent/US2512155A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB249989A (en) * | 1925-02-25 | 1926-04-08 | Douglas Motors Ltd | Improvements in silencers for internal combustion engines |
GB382418A (en) * | 1931-10-21 | 1932-10-27 | Gabriel John Hannen | Improvements in or relating to silencers for internal combustion engines |
US2088576A (en) * | 1936-07-24 | 1937-08-03 | Robert W Compo | Muffler |
Cited By (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1247749B (en) * | 1961-11-16 | 1967-08-17 | Berliet Automobiles | Exhaust silencers for internal combustion engines |
US3823743A (en) * | 1970-11-06 | 1974-07-16 | Dunlap Holdings Ltd | Pressure reducing device |
US3690406A (en) * | 1970-12-04 | 1972-09-12 | Leopold Weiss | Exhaust noise silencer |
US4371053A (en) * | 1980-03-17 | 1983-02-01 | Hills Industrie Limited | Perforate tube muffler |
WO1990004706A1 (en) * | 1988-10-21 | 1990-05-03 | Donaldson Company, Inc. | In-line constricted sound-attenuating system |
US5123501A (en) * | 1988-10-21 | 1992-06-23 | Donaldson Company, Inc. | In-line constricted sound-attenuating system |
US5004068A (en) * | 1988-12-06 | 1991-04-02 | Ebara Corporation | Muffler |
EP0808694A1 (en) * | 1996-05-21 | 1997-11-26 | Yotaro Taga | Silencer mechanism for use in an impact wrench |
US5892186A (en) * | 1997-11-03 | 1999-04-06 | Flowmaster, Inc. | Muffler with gas-dispersing shell and sound-absorption layers |
US7159692B1 (en) * | 1999-10-11 | 2007-01-09 | Silentor Holding A/S | Silencer |
US20070267540A1 (en) * | 2002-10-22 | 2007-11-22 | Atkey Warren A | Electric-based secondary power system architectures for aircraft |
US20060043236A1 (en) * | 2004-09-02 | 2006-03-02 | Campbell Thomas A | Integrated axially varying engine muffler, and associated methods and systems |
US7267297B2 (en) | 2004-09-02 | 2007-09-11 | The Boeing Company | Integrated axially varying engine muffler, and associated methods and systems |
US20060071123A1 (en) * | 2004-09-27 | 2006-04-06 | Nguyen Phuong H | Automatic control systems for aircraft auxiliary power units, and associated methods |
US8061650B2 (en) | 2004-09-27 | 2011-11-22 | The Boeing Company | Automatic control systems for aircraft auxiliary power units, and associated methods |
US20110127372A1 (en) * | 2004-09-27 | 2011-06-02 | The Boeing Company | Automatic control systems for aircraft auxiliary power units, and associated methods |
US7891605B2 (en) | 2004-09-27 | 2011-02-22 | The Boeing Company | Automatic control systems for aircraft auxiliary power units, and associated methods |
US20090037036A1 (en) * | 2004-09-27 | 2009-02-05 | The Boeing Company | Automatic Control Systems for Aircraft Auxiliary Power Units, and Associated Methods |
US7364116B2 (en) | 2004-09-27 | 2008-04-29 | The Boeing Company | Automatic control systems for aircraft auxiliary power units, and associated methods |
US20080179466A1 (en) * | 2004-10-26 | 2008-07-31 | The Boeing Company | Dual Flow APU Inlet and Associated Systems and Methods |
US7344107B2 (en) | 2004-10-26 | 2008-03-18 | The Boeing Company | Dual flow APU inlet and associated systems and methods |
US20060102779A1 (en) * | 2004-10-26 | 2006-05-18 | Campbell Thomas A | Dual flow APU inlet and associated systems and methods |
US7611093B2 (en) | 2004-10-26 | 2009-11-03 | The Boeing Company | Dual flow APU inlet and associated systems and methods |
US7513119B2 (en) | 2005-02-03 | 2009-04-07 | The Boeing Company | Systems and methods for starting aircraft engines |
US20060168968A1 (en) * | 2005-02-03 | 2006-08-03 | Edward Zielinski | Systems and methods for starting aircraft engines |
US7380397B2 (en) * | 2005-09-08 | 2008-06-03 | Chih-Kuang Chang | Automobile exhaust pipe assembly |
US20070051557A1 (en) * | 2005-09-08 | 2007-03-08 | Chih-Kuang Chang | Automobile exhaust pipe assembly |
US20070227811A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20070227809A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US7549510B2 (en) * | 2006-03-29 | 2009-06-23 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US7997383B2 (en) | 2006-03-29 | 2011-08-16 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20070227810A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US7766123B2 (en) | 2006-03-29 | 2010-08-03 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20080023262A1 (en) * | 2006-07-28 | 2008-01-31 | Denso Corporation | Air-intake apparatus |
US20080078863A1 (en) * | 2006-09-25 | 2008-04-03 | The Boeing Company | Thermally compliant APU exhaust duct arrangements and associated systems and methods |
US7765784B2 (en) | 2006-09-25 | 2010-08-03 | The Boeing Company | Thermally compliant APU exhaust duct arrangements and associated systems and methods |
US7905321B2 (en) * | 2007-02-12 | 2011-03-15 | Ballard Iii Ebbin C | Inserts for engine exhaust systems |
US20090321181A1 (en) * | 2007-02-12 | 2009-12-31 | Ballard Iii Ebbin C | Inserts for engine exhaust systems |
US20080190689A1 (en) * | 2007-02-12 | 2008-08-14 | Ballard Ebbin C | Inserts for engine exhaust systems |
US8657227B1 (en) | 2009-09-11 | 2014-02-25 | The Boeing Company | Independent power generation in aircraft |
US8950703B2 (en) | 2009-09-11 | 2015-02-10 | The Boeing Company | Independent power generation in aircraft |
US8256569B1 (en) | 2010-10-04 | 2012-09-04 | Huff Dennis L | Exhaust sound attenuation device and method of use |
US8738268B2 (en) | 2011-03-10 | 2014-05-27 | The Boeing Company | Vehicle electrical power management and distribution |
US20120273298A1 (en) * | 2011-04-29 | 2012-11-01 | GM Global Technology Operations LLC | Silencers for air conditioning systems |
US20160010524A1 (en) * | 2012-02-07 | 2016-01-14 | William Lee Bartlett | Muffler For Automobile |
US9488079B2 (en) * | 2012-02-07 | 2016-11-08 | Black Widow Performance, Inc. | Muffler for automobile |
US9938873B2 (en) | 2012-02-07 | 2018-04-10 | Black Widow Performance, Inc. | Muffler for automobile |
US20150068834A1 (en) * | 2013-09-08 | 2015-03-12 | Michael Wayne Barrett | Resonance Generating Muffler |
US9422843B2 (en) * | 2013-09-08 | 2016-08-23 | Michael Wayne Barrett | Resonance generating muffler |
US11242783B1 (en) | 2021-06-30 | 2022-02-08 | Terrance Chen | Sound deflecting muffler |
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