US1583095A - Muffler for exhaust gases - Google Patents

Description

May 4,1926. 1,583,095

J. B. PAYNE MUFFLER FOR EXHAUST GASES Filed July 14 1921 F/Q 3 f/GAZ IN VEN TOR @W/M/MM/ A TTORNEY Patented May 4, 1926. I

UNITED STATES" PATENT OFFICE.-

JAMES B. PAYNE, OF SAN DIEGO, CALIFORNIA, ASSIGNOR OF GNE-HALF TO 1?. C. JOHNSON, OF SAN DIEGO, CALIFORNIA.

MUFFLER FOR EXHAUST GASES.

Appiication filed. July 14, 1921. Serial No. 484,624.

To all whom it may concern:

Be it known that I, JAMEs B. PAYNE, a

citizen of the United States, residing at San Die o, in the county of San Diego and State of .alifornia, have invented a certain new and useful Mufller for Exhaust Gases, of which the following is a specification.

My invention relates to mufllers for 'exhaust gases from internal combustion engines and the objects of my invention are; First, to provide a muflier for exhaust gases thatis so constructed that air is admitted therein at intervals to fill the partial vacuum of the outgoing exhaust discharge and prevent reaction; second, to provide a muffler of this class in which there is no reaction of the exhaust gas toward the engine cylinders, therefore no retardation of the outflow of the gas from the engine; third, to provide a novelly constructed mufiier for exhaust gases; fourth, to provide means for cooling the muffler; fifth, to provide a muffler of this class which may be connected directlyto the engine cylinder, thus eliminating the necessity for an exhaust manifold; sixth, to provide a muffler of this class which reduces to a minimum the noise and vibration usually caused by the exhaust mufller; seventh, to provide a mufiier in which the exhaust from the engine is free,-thus providing for thorough scavenging of the cylinders and eighth, to provide a mufiier of this class which is very simple and economical of construction, durable, easy to install, automatic mats action and which will not readily de teriorate or get out of order.

With these and other objects in view as will appear hereinafter, my invention consists of certain novel features of construction, combination and arrangement of parts and portions as will be hereinafter described in etail and particularly set forth in the appended clalms, reference being had to the 4 accompanying drawings and to the characters of reference thereon which form a part of this application, in which:

Figure 1 is a side elevational view of my mufller in its preferred form showing portions broken away and in section to facilitate the illustration, Fig. 2 is a sectional view through 22 of Fig. 1 on an enlarged scale, Fig. 3-is a longitudinal sectional view of the mufiler in a slightly modified form fromthat of Figs. 1 and 2 of the drawings, Flg. 4 is a transverse sectional view thereof,

Fig. 5 is a longitudinal sectional view of the same in another slightly modified form and Fig 6 a transverse sectional view thereof.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawings.

The main conductor tube 1 and air inlet tubes 2 constitute the principal parts and portions of my muffler.

The main conductor tube 1 is preferably cylindrical in form and hollow andmay be straight or curved in any shape as desired. It is provided at its extended end with reduced portions 1 and 1". It will be noted, however, that one reduced portion may be sufficient, dependent upon the length of the tube 1 and upon the construction of the englue.

it will be noted that this tube 1 may be constructed in a single piece or in sections as desired, it being noted that a continuous tube is all that is necessary. Mounted in the wall of said tube at intervals, beginning near the gas exhaust inlet end thereof, are a plurality of air inlet tubes 2 which are preferably shaped as shown in the drawings. They are secured in the wall of the conductor tube 1 and their inner ends extend toward the outlet end of the conductor tube 1 while the outer end preferably extends toward the inlet end of said conductor tube. However, it will be noted that this outer end may extend directly atright angles to the conductor 1 or may be turned in the same direction as the inner end if desirable, it being noted, however, that the inner end should extend some distance toward the outlet end of said conductor tube 1. Theseextended portions may be extended centrally in the conductor tube 1 and placed at intervals around said tube as shown best in Fig. 1 or may be placed along one side andextend just inside said conductor tube 1 along one side thereof, as shown best in Figs. 3 and 4 or may be positioned near the wall and positioned around the tube at intervals as shown best in Figs. 5 and 6, it being noted that the principle involved is that the inner portion of the tube 2 extends backwardly toward the outlet end of the conductor tube 1 so that the exhaustgases in passing the end of the tube tend to draw the fresh air through said conductor 2 for filling the space caused by the movement of the exhaust gas outwardly with the impulses of the engine. 'The reduced por- The portion 1 is open at the end at 1.

tions 1 and 1 of the tube 1 provide means for contracting the exhaust gases at the end of said mufiler as they are gradually reduced Though I have shown and described a particular construction, combination and arrangement of parts and portions and certain modifications thereof, I do not wish to be limited to this particular construction, combination and arrangement, nor to the modifications as disclosed, but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth in the appended claims.

It is obvious that with this construction there is provided a muffler for exhaust gases for internal combustion engines in which the movement of the exhaust gases from the e-n gine cylinders will automatically draw in.

fresh air from the outside for relieving the vacuum behind the gas with the different impulses of the engine and prevent reaction orback-action of the gases against the outlet of the engine cylinders which will cause a smooth-running engine without back pressure and will prevent noise and'vibration of the muflier; that the mufller may be posttioned directly at the engine cylinder outlet; that the exhaust may be positioned directly in connection with the exhaust port of the engine cylinder thus eliminating the necessity for an exhaust manifold if desired; that the vacuum between the gases caused by the lar member open from one end to the other 1 provided with graduated reduced sections near its outlet end only, and a plurality of air inlet tubes open at both ends positioned,

at intervals therein and extending through the wall thereof, the inner ends of the air inlet tubes extending toward the outlet end of said tubular member and the outer ends extending outwardly past the walls of said tubular member, a short distance only.

2. In a mufiier for exhaust gases, a tubular member open from one end to the other provided with graduated reduced sections near its outlet end only, and 'a plurality of air inlet tubes open at both ends positioned at intervals therein and extendingthrough the wall thereof, the inner ends of the air in.et tubes extending toward the outlet end of said tubular member and the outer ends extending outwardly past the walls of said tubular member a short distance only, some of said air inlet tubes being positioned in said reduced section and one in the extended 1 end of said tubular member, whereby freshv air is admitted to the interior of said tubular member from the exterior throughout the full length of said tubular member.

In testimony whereof, I have hereunto set I

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