US1020163A - Exhaust-muffler. - Google Patents

Exhaust-muffler. Download PDF

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Publication number
US1020163A
US1020163A US55368910A US1910553689A US1020163A US 1020163 A US1020163 A US 1020163A US 55368910 A US55368910 A US 55368910A US 1910553689 A US1910553689 A US 1910553689A US 1020163 A US1020163 A US 1020163A
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Prior art keywords
diaphragms
exhaust
chamber
openings
muffler
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Expired - Lifetime
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US55368910A
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George F Swain
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    • 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
    • F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the exhaust gases or successively throttling exhaust gas flow

Definitions

  • My invention relates to exhaust muumblers for internal combustion engines.
  • the object ofmy invention is to provide a muffler of simple construction, which can be readily assembled or taken apart, which is cheap to manufacture, and which will so diffuse the exhaust gases t-hatthe finalescape thereof in the atmosphere will be free from the disagreeable noise incident to a free exhaust of the gases.
  • VMy invention consists of a casing provid-I ing a chamber for confining the exhaust gas, a series of diaphragms or'bailles, preferably cup-shaped and resting one on top of the other, fitting Within said chamber transversely thereof, said diaphragms being provided with openings or perforations surrounded by tlanges. Said diaphragms are preferably provided in alternation with apertures near their peripheries and at or near their centers to provide a tortuous passage for the gas through said chamber.
  • the casing is provided with a cap or cover having an inlet and an outlet opening, respectively, Said covers being heldin position in some suitable4 manneras for example, by av rod which extends centrally through the diaphragms in the casing and which is threaded at one of i ts ends into the cover and which is provided at its opposite end with threads for receiving a. clampingnut.
  • One feature of my invention consists in f the structure of the diaphragms or baiiies,
  • said batlles being provided with anges surrounding the openings through which the exhaust gas fiows.
  • Figure 1 is a central, longitudinal section of the muffler
  • Figs. 2 and 3 are a central, vertical section and a plan view, respectively, of one of the alternating series of diaphragme
  • Figs. 4 and ⁇ 5 are a central, vertical section and plan view, respectively, of the other alternating series ofdiaphragms'.
  • the main body 1 of the casing of the chamber which receives the exhaust gas may be of the usual construction. Fitting within and transversely of said casing are a series of diaphragme 2 and 3, respectively, which 'are shown as cup-shaped, the flanges 4 of one cup fitting against the internal wall-of the casing 1 and resting upon the bottom of the preceding cup, thus spacing said diaphragms at suitable distances apart.
  • of the diaphragms 3 is provided at or nea-r it-s center with an opening for the passage of the gases, preferably with a single large opening 5.
  • Each of the diaphragms 2 is provided near its periphery with a series of smaller apertures 6.
  • the cup-shaped diaphragms 2 andy 3 are drawn into suit-able shape from sheet metal, and upon the interior of the cups about the openings 5 and 6 are provided flanges or short tubes 7 and 8, respectively.
  • caps or covers 9 and 10 which may have annular grooves about their periphery for receiving the ends of the casing.
  • the covers 9 and 10 have flanges which prodesired manner, but I preferably employ a rod 11 which extends longitudinally and axially of the casing through the openings 5 in the cups 3 and through central perforations 12 in the cups 2.
  • the ⁇ ends of the rodl 11 project through the covers 9 and 10 and are screw threaded.
  • the rod 11 is threaded in one of the covers 9, and receives a clamping nut 13 upon its opposite end.
  • the covers are thus securely locked in place, and the cups 2 and 3 are suitably spaced apart and are held against displacement.
  • the cover 9 is provided, preferably near its periphery, with an inlet opening 14 for exhaust gases from the engine and the cover 10 is likewise provided with outlet opening 15 through which the gases escape from the muffler.
  • the inlet opening 14 is preferably p of the same size as the central opening 5 of the diaphragm 3, and the sum total of the apertures 6 of each of the diaphragme 2 are anges likewise equivalent to the opening 5 of each of the diaphragms 3.
  • thef openings 5 and 6 in the diaphragm are relatively so arranged as to provide atortuous path for the exhaust gas and thus to prevent a iioW of gases in a direct ath through the mutiier, and the and 8 about the said openings still further diffuse the gases Without any appreciable back pressure.
  • the gases escape from the muiiier unaccompanied by disagreeable noises and Without interfering with the proper exhaust from the internal combustion engine to which the mu'lier is attached.
  • the combination With a chamber for confining the exhaustgas, said chamber having an inlet and an outlet port, of a series of diaphragms fitting Within said chamber transversely of the same, said diaphragms being provided alternately with a single large, central opening and with a plurality 4of smaller peripheral openings for the passage of the 'exhaust gas, said diaphragms being provided with open-ended .anges surrounding said openings ,on the inlet side of sai-d diaphragms.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Description

Patented Mar. 12, 1912.
G. F. SWAIN.
EXHAUST MUFPLBR.
APPLICATION FILED APR.6, 1910.
"Ill,
GEORGE F. SWAIN, F GHICAGO, ILLINOIS.
Specification of Letters Patent.
Patented Mar. 12, 1912'.
Application filed April 6, 1910. Serial No. 553,689.
`To all 'whom it may concern:
Beit known that I, GEORGE F. SWAIN,
Y citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Exhaust-Mufflers, of
- which the following is a full, clear, concise,
and exact description.
My invention relates to exhaust muiilers for internal combustion engines.
The object ofmy invention is to provide a muffler of simple construction, which can be readily assembled or taken apart, which is cheap to manufacture, and which will so diffuse the exhaust gases t-hatthe finalescape thereof in the atmosphere will be free from the disagreeable noise incident to a free exhaust of the gases.
VMy invention consists of a casing provid-I ing a chamber for confining the exhaust gas, a series of diaphragms or'bailles, preferably cup-shaped and resting one on top of the other, fitting Within said chamber transversely thereof, said diaphragms being provided with openings or perforations surrounded by tlanges. Said diaphragms are preferably provided in alternation with apertures near their peripheries and at or near their centers to provide a tortuous passage for the gas through said chamber. yThe casing is provided with a cap or cover having an inlet and an outlet opening, respectively, Said covers being heldin position in some suitable4 manneras for example, by av rod which extends centrally through the diaphragms in the casing and which is threaded at one of i ts ends into the cover and which is provided at its opposite end with threads for receiving a. clampingnut.
One feature of my invention consists in f the structure of the diaphragms or baiiies,
said batlles being provided with anges surrounding the openings through which the exhaust gas fiows.
The several features of my invention may be more readily understood by reference to the accompanying dra-wings in which,
Figure 1 is a central, longitudinal section of the muffler; Figs. 2 and 3 are a central, vertical section and a plan view, respectively, of one of the alternating series of diaphragme; and Figs. 4 and` 5 are a central, vertical section and plan view, respectively, of the other alternating series ofdiaphragms'.
Similar letters of reference indicate like' part-s throughout the several views.
The main body 1 of the casing of the chamber which receives the exhaust gas may be of the usual construction. Fitting within and transversely of said casing are a series of diaphragme 2 and 3, respectively, which 'are shown as cup-shaped, the flanges 4 of one cup fitting against the internal wall-of the casing 1 and resting upon the bottom of the preceding cup, thus spacing said diaphragms at suitable distances apart. of the diaphragms 3 is provided at or nea-r it-s center with an opening for the passage of the gases, preferably with a single large opening 5. Each of the diaphragms 2 is provided near its periphery with a series of smaller apertures 6. The cup-shaped diaphragms 2 andy 3 are drawn into suit-able shape from sheet metal, and upon the interior of the cups about the openings 5 and 6 are provided flanges or short tubes 7 and 8, respectively.
The ends of the casing 1 are closed by caps or covers 9 and 10, respectively, which may have annular grooves about their periphery for receiving the ends of the casing.
Each
The covers 9 and 10 have flanges which prodesired manner, but I preferably employ a rod 11 which extends longitudinally and axially of the casing through the openings 5 in the cups 3 and through central perforations 12 in the cups 2. The\ends of the rodl 11 project through the covers 9 and 10 and are screw threaded. The rod 11 is threaded in one of the covers 9, and receives a clamping nut 13 upon its opposite end. The covers are thus securely locked in place, and the cups 2 and 3 are suitably spaced apart and are held against displacement.
The cover 9 is provided, preferably near its periphery, with an inlet opening 14 for exhaust gases from the engine and the cover 10 is likewise provided with outlet opening 15 through which the gases escape from the muffler. The inlet opening 14 is preferably p of the same size as the central opening 5 of the diaphragm 3, and the sum total of the apertures 6 of each of the diaphragme 2 are anges likewise equivalent to the opening 5 of each of the diaphragms 3.
As shown, thef openings 5 and 6 in the diaphragm are relatively so arranged as to provide atortuous path for the exhaust gas and thus to prevent a iioW of gases in a direct ath through the mutiier, and the and 8 about the said openings still further diffuse the gases Without any appreciable back pressure. As a result of the structure, the gases escape from the muiiier unaccompanied by disagreeable noises and Without interfering with the proper exhaust from the internal combustion engine to which the mu'lier is attached.
Having thus described my invention, what I claim is:
l. In an exhaust-muffler for internal combustion engines, the combination With a chamber for confining the exhaustgas, said chamber having an inlet and an outlet port, of a series of diaphragms fitting Within said chamber transversely of the same, said diaphragms being provided alternately with a single large, central opening and with a plurality 4of smaller peripheral openings for the passage of the 'exhaust gas, said diaphragms being provided with open-ended .anges surrounding said openings ,on the inlet side of sai-d diaphragms.
2. In'an eXhaust-'mufier for internal combustion engines, the combination With -a chamber for confining the exhaust-gas, said chamber having an inlet and an outlet port, of a series of diaphragms itting Within said chamber transversely of .the sa1ne,'said diaphragms being provided alternately with openings near their peripheries land their centers for the passage of the exhaust gas, said diaphragms being provided with openended flanges surrounding said openingson the inlet side of said diaphragms.
3. In an exhaust-mulli'er for internal combustion engines, the combination with a chamber for confining the exhaust-gas, said chamber having an inlet and an outlet port, of a series of cup-shaped diaphragms fitting Within said chamber transversely of the same, the flanges of said diaphragms serving as spacing members for the diaphragms, and said diaphragms being provided with openings disposed so as to providev a tortuous path through said chamber for the exhaust-gas, said diaphragms being provided With open-ended ianges surrounding said openings on the inlet side of said diaj phragms.
In Witness whereof, I .hereunto subscribe my name this thirty-iirst day of March A. D.
GEORGE F. SWAIN.. Witnesses:
` GEO. C. DAvIsoN,
lMcCLnLrnrm YoUNc.
US55368910A 1910-04-06 1910-04-06 Exhaust-muffler. Expired - Lifetime US1020163A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609886A (en) * 1948-07-03 1952-09-09 Waterloo Foundry Company Muffler with concave baffles
US4679395A (en) * 1984-10-25 1987-07-14 Ou A Lin Cleaning means for vehicle exhausting pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609886A (en) * 1948-07-03 1952-09-09 Waterloo Foundry Company Muffler with concave baffles
US4679395A (en) * 1984-10-25 1987-07-14 Ou A Lin Cleaning means for vehicle exhausting pipe

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