US1005913A - Muffler. - Google Patents

Description

N'zzwsn im. 17, 1910.

Patented OO. 17, 1911.

W. H. WINSLOW MUFFLEB. Nuon-10N r1LEn'nno-1s, 190s. 1u: 1 ,005, 9 1 3 www "mw w N *Iliff 4 ,mijn 4 .mw ff W. H. WINSLOW.

MUFPLER.

20.12, 190s. nvmmwnv JAN. 17. 1910.

Patented Oct. 17, 1911.

2 SHBBTB--SHEET 2.

WI'In' E' '5' ses vehicle, and 24 represents the semi-cylindrical 'aft liuc from the boiler of the engine. The pipe Q1 is supported by the shell 24 and is held thereto by bands 25 whose ends ZGpaSS through the .f-:hell 24 and are riveted thereto. The outlet stud 20 passes through tht shell 2l and thus the exhaust end ot' the lnnlller is supported. The other end of the niulller is carried by a band 27 whose ends Q8 are 4eecured to the shell 24 by means of rivets or by means of bolts-29, as shown.

A multiplicity ofJl'iafssagen'ays 30 is pro- 'rided for connecting'the interior of the pipe 7 withthe interior of the shell l. These passageways, as shown, in F ig. 1, are provided by small pipes or tubts 3l extending through openings 32 drilled through the wall of pipe 7. These @duction tubes1 are of considerable length in comparison to the thickness,l of the wall of pipe 7 and of comparatively small diameter. The exhaust gas entering with considerable force t'roln the engine `exhaust into the pipe 7 must flow through these eduction Itubes and is broken up into a multiplicity of streams. The tubes, however, interpose considerable resistance to the flow of the streams, and the energy in the gas, `which would tend to produce noise ie in greater part. trzma'tornu-rl. Io further re- 'duce and destror the noise factors, ly have Iarranged the tubes ao that the regularity of flou' and direction is broken. lf the tubes were all ofthe ,saine lengt-h and their outl s all in the reuneplane, the noise factors of t ie. individual streams would art rumulatively, but by haring the tubes of vaiving length and arranged to direct the streams in varying directions, thi:-A unit or cumulative tendency is broken up and practically complete mailling results. As shown in l? 1 and 2, rows of openings 3i. are drilled through the 'pipe I and the tubes 3l, inserted and secured in any suitable manner, as by .soldering or threading. As shown the tubes are of varying length, sonic being shorter and some longer. The ulrrangement is also shown whereby tubes n'iay cause, the streamsv tberetlnrough to act diti'elrently upon each other` .see 'For example, tubes 230 and 30 in Fig. l, whose. ends are turned toward each other so that'A the streams issuing therefrom will strike each other and neutralize each other-s energy .so that there will be no rcsultant noise. The tubes` mali also Ybe of varying diameter' and I preferably elnploy a plurality of larger tubes, which will allow the escape of 'water of condensation from the pipe 'i'. The aggregate area of the tuberi should also be auch with .relation to the cross-sectional area ol" the pipe 7 so that there will be no back presa-ure on the engine. lin4 opening 33 ivili be provided in` the end 2 by means `of which a suitable gage (not shown) can be connected with the pipe? to test for back pressure. The exhaust gas,

` reetion and length.l

therefore, when coming from the engine rushes into pipe 7 and is broken u into streams which flow through the tu es 31 and from which the 4greater part of the noise energy is extracted on account of the resist ance of the tubes, the noise factors being further reduced and destroyed by the irregular lty or differential arrangement of thetubes,

the gases then flowing through outlet 2t),

and pipe 21 into the draftflue Q4 and tothe atmosphere. The gases are projected longi-v tudinal-ly through the draftjiue and creat/e more or less vacuum effect, which increases the boiler draft in a manner Well-known in the art. Auxiliary outlets in the form of small holes 30' may also be provided to assist in breaking up' the face and the direction of the. gas streams.

ln Figs. 3 and 4 is shown a modified ar rangement. Instead of formin the resistance @duction passageways of'tu es, the pipe 7 could hare suiiiciently thick Walls throu h which the passageways 3() are drilled. T e passageways thus formed could be of varying diameter and direction.

Other arrangements and constructions are also possible, which would produce the varions features of fny invention, and I do not, therefore, wish to limit myself to the particular constructions and arrangements shown.

[desire to secure the following claims by Letters Patenti 1 Tn a muller, the combination of a pipe adapted for connection with' an en ine to reeei\ e the exhaust gases, and a multiplicity of ,small-bore tubes extending from said pipe in different and irregular directions, said tubes being also of different len the.

2. In a mutller, the combination o a pipe closed at one end and adapted for connection at its other end with an engine to be mutlied, and a plurality of out-lets from the interior to the exterior of said pipe, said outlets being irregular as to their direction, length and size.

3. Tn a mutiler, the combina-tion of a, pipe closed at one end and adapted for connection at. its other end with an engine to be muiiled,

`and a plurality of fine tubes supported b and connecting the interior of the p ipe wit the exterior thereof, eind tubes belngrela.- tively irregular and different ais to their 4d1- 4. Tn a. muiller, the combination of a shell forming an expansion chamber, a pipe egctendiug centrally through said shell, the entrance to the en( of said pipe being ada ted for connection with an engine to be mu ed, the. `other end of said pipe being closed by an end wall of said lshell, and a plurality of high-resistance outlets for connecting said ether end of the pipe with the interior of the shell, there being an atmosphere outlet from said shell near the entrance end of Suid pipe. i

5. In a muliier, the combination of a cylindrical shell forming an expansion chamber, a pipe extending centrally through the shell, tlie entrance end of said pipe extending through one end Wall of said shell and adapted for connection with the engine to be muliled, the other rnd of said pipe screwing into the other end of said shell to be closed thereby, and an outlet for connect-ing said other end. of the pipe with the expansion chamber, said outlets being relatively irregular as to their direction, there being an atmosphere outlet from the shell near the entrance end of the pipe.

G. In a mutiier, the combination of a cylindrical shell, a pipe extending centrally through said shell, the entrance end vof the pipe extending through one end wall of the shell and adapted for connection with an engine to be muilied, the other end of said plpe being supported and closed by the other end wall of said shell, and a multiplicity of small-bore tubes connecting said other end of the pipe with the exterior, said tubes being irregular as to size, direction and length, there being a. single outlet from said shell connected with the atmosphere.

7. In a muliler, the combination of a pipe adapted for connection with an engine to receive the exhaust gases, a multiplicity of tubes extending from said pipe in different and irregular directions, the bore and length of said tubes being such that flow therethrough is deprived of the pres'tlre element to cause the gas to issue in t e form of compact jets having only a velodity element.

8. In a moitier, the combination of a pipe adapted for connection with an engine to receive the exhaust gases, a multiplicity of tubes extending from said pipe in different and irregular directions, the bore and length of said tubes being such that flow therethrough is deprived of the pressure element to cause the gas to issue in the form of compact jets having only a velocity element, said pipe extending differentially against each other.

9. In a mutller, the combination of a pipe adapted for connection with an,engine to receive the exhaust gases, and a multiplicity of small bore tubes extending from said pipo to break the gas flow into a plurality of jets, the walls of said tubes at their ends being perforated to further assist in breaking up of the gas flow. f

l0. In a mutller for origines, the combination of a irst cylindrical compartment for receiving the exhaust gases, a concentricl compartment for receiving such gases from the first (compartment, and au annular partition separating such colmmrtlnents, such partition having formed therethrough a plurality of holes of less diameter than length to afford surfaces for frictional engagement with the exhaust gases.

1l. In a muffler for en ines, the combination of two concentric tu es of different diameter adapted to form two compartments, one of such compartments adapted to be connected to the engine to receive the exhaust gases and communicating with the other compartment solely by means of openings of smaller diameter than length through the inner tube, such other compartment having a free outlet opening to the atmosphere.

12. In a muffler for engines, the combina-- tion of a rst compartment for receiving the exhaust gases, and a secondcompartment for receiving such gases from the first compartment and delivering the same to the atmosphere, such compartments formed by means of two concentric tubes of different. size, the inner tube being comparatively thick and having a multiplicity of small bore holes formed therethrough.

13. In a muiller for engines, the combination of a rst pipe, a second pipe disposed within the first pipe and small bore tubes extending from the second pipe and adapted to afford high surface resistance to the passae of exhaust gases from one pipe to the ot er.

14. In a muflier for engines, the combination of a first pipe, and a second pipe disposed within the first pipe, such second pipe having formed therethrough openings of small bore relatively to their length to ai'ord high surface resistance to the passage of exhaust gases from one pipe to the other.

15. In a muflier for engines, the combination of a 'first compartment for receiving the exhaust gases, a second compartment adapted to deliver the exhaust gases from the mufller, and small bore tubes extendin from one compartment to the other suclgi tubes being of different lengths and extending in different directions.

16. In a mutlier for engines, the combination of a first compartment for receiving. the exhaust gase, and a second compartment adapted to deliver the exhaust gases from the mutlier, 'such compartments separated by a partition having formed there-' through a plurality of openings of small bore relatively to their length to afford a high surface resistance to the passage of the exhaust gases from the first to the see` ond compartment.

In Witness whereof, I hereunto subscribe my name this 8th day of December A. D.

WILLIAM H. WINSLUW. Witnesses CHARLES J. SCHMIDT, FRANK J. 'Fm-uam.

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