US1023644A - Exhaust-muffler. - Google Patents

Description

J. HALL.

EXHAUST MUFFLER.

APPLICATION FILED 11012119104 1,023,644. Patented Apr. 16, 1912.

izz/enfar. Minessas 7V4 gg 777M amww w JOSEPH HALL, OF MANCHESTER, ENGLAND.

EXHAUST-MUFFLER.

Specification of Letters Patent.

Patented Apr. 16, 1912.

Application filed November 22, 1910. Serial No. 593,743.

To all whom it may concern:

Be it known that I, JGSEPH HALL, a subject of Great Britain, residing at Manchester, in the county of Lancaster, England, Kingdom of Great Britain, have invented new and useful Improvements in Exhaust- Mufiiers, of which the following is a specification.

My invention relates to improvements in exhaust mufflers such as are employed for silencing the noise contained in the exhaust gases when coming from oil, gas and the like motors and the object is to provide a construction of exhaust muflier which is more efficient than those hitherto in use and can be readily taken to pieces for cleansing purposes. I attain these objects by the mechanism illustrated in the accompanying drawing, in which igure 1 is a longitudinal section and Fig. 2 an end view of an exhaust mutiler constructed in accordance with my invention.

Similar letters refer to similar partsthe outlet end of the body or shell a I construct a collar 0 on the outside of the body a and on the inside of the said collar, I fix an outlet end plate 0!, held in position up against the outlet end of the body, by two taper pins 0 to make a tight joint. At, or about the center of the said body, or shell, I fix internally what I call a bafiie head piece 9 having three (or more) perforated aflie plates h, i, k, erforated with holes Z (for the passage of t e exhaust gases) and to break up the volume of the said exhaust gases when passing through the batlle plate. This baflie head piece and perforated battle plates are fixed onto the end of the central tube f that projects through the aforesaid outlet end plate d to or about the center of the body a. This said end plate carries the central tube and battle head piece and forms four separate chambers m, n, 0, p, two inside of the said body or shell, and two on the outside of the central tube 1. By taking out the taper pins, the outlet end plate d and central tube f and battle head piece 9 can be withdrawn for cleansing purposes.

The exhaust mulfler described operates as follows: Fig.1 shows by the arrows (two cycle), the line of flow of the said exhaust gases when passing through the exhaust muffler. It is in this cycle of operation that the silencing takes place. First, the exhaust gases enter the receiver No. 1. Here considerable expansion takes place, the gases striking the outside of the baflie head piece 9. Second, then passing on to the bathe plates 12, z, k the gases here pass through the perforations (holes Z.) in the bafiie plate It, i, k and the two small chambers m, n breaking up the volume of the gases into -jets and silences the noise. Third, the exhaust gases then-pass into the receiver No. 2, here considerable expansion takes place again in the second instance, striking the end of the outlet end plate d, here the gases make the first turn. This completes the first cycle, as shown by the arrows. Fourth, the exhaust gases then enter into the second series of perforations (holes) Z in the battle plates is, 2', h and then pass through the two small chambers 0, 7) into the small receiver No. 3 inside the bafiie head piece 9 expanded again for the third time. Here the exhaust gases make the second turn and performing the two 0 cle. The gases then pass along through t e central tube f as shown by the arrows, out of the muflier.

I claim:

In an exhaust muflier, a cylindrical receptacle having an 0 on end and a hole provided end, a lid 0 osing the said open end, taper pins holdin the said lid in position, a tube passing t rough the center of the said lid into the said receptacle, disks in the said receptacle secured to the said tube, two rows of holes in the said disks,

an annular projection between the said rows of holes on each of the said disks, a name to this specification in the presence of hollow baflie head-piece in the said receptwo subscribing witnesses. tacle and secured to the said tube, and two rows of holes in the said baffle head-piece, JOSEPH HALL 5 all substantially as and for the purpose set Witnesses:

fcrth.

THOMAS COLLINGE, In testimony whereof I have signed my GEORGE KNOWLES.

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