US1860146A - Muffler - Google Patents

Description

May 24, 1932. E. P. GRAY I 1,860,146

MUFFLER Filed Feb. 15, 1929 fi z 6225 If V L V] a l/Fig.5 v 25 36 k .1 o i l' 425 Z7 L n A a5) IIGVNTOR.

By W d A TORNEY.

Patented May 24, 1932 PATENT OFFICE.

EMMET P. GRAY, OF DETROIT, MIOHIGAN MUFFLER Application filed February 15, 1929. Serial No. 340,086.

My invention relates to improvements in mufiiers for controlling the discharge of exhaust gas from engines, and the object of my improvements are, first, to provide a muflier 5 with a housing and valve therein for controlling and regulating the flow of gases or fluids therein; second, to provide a mufiier valve housing through which the fluids and gases may pass when valve is open as well as when closed; third, to provide a muflier having one or more tubes or drums spaced and supported by. a valve housing; fourth, to provide a muffler having an internal housing and valve with an outside. control member; fifth, to provide a mufiier internal valve having an outside gas tight control means; sixth, to provide a concentric drum mufiier, having an internal valve, with means for rendering its outside control gas tight, said means being all utilized tohold the concentric drums in position; seventh, to provide a mufiler having means for equalizing the pressure therein,

said means being operated cooperatively with the throttle control of the engine to which said mufller is connected; eighth, to provide a mufiler having a minimum of back pressure; ninth, to provide a mufiler having a plurality of discharge ways, the operation of said discharge ways'being automatically controlled by the throttle control means of the engine to-which the muffler is connected; and tenth, to provide a muffler having a converging nozzle for increasing the -flow of theslower moving bodies of gases therein.

I attain these objects by the mechanism illustrated in the accompanying drawings in which- Fig. '1 is a vertical section of the mufiler;

Fig. 2, a plan viewof the muflier:,Fig. 3, an

' end view of the valve housing: Fig. 4,, a side view of the valve housing; Fig. 5, a view of the opposite end of the housing from that disclosed in Fig.- 3; Fig. 6,'a front view of the I; valve member; Fig. 7, a side view of the valve member; Fig. 8, a plan view of the valve member in its closed position; Fig: 9, an end view of the collector member; Fig. 10, a sec tional view of the collector member on the line --10, Fig. 9; and-Fig. 11a sectional view of the valve housing on the line 11-11, Fig. 1.

imilar numerals refer to similar parts throughout the several views.

The housing 1 is provided with shoulders 2,3, 4, 5, and 6 for' spacing and supporting the shell and tubes of the mufiler. The outer shell 7 fits over the shoulder 2 of the housing 1, the housing 1 being provided with a thread ed boss 8 into which is threaded the screw 9 for fastening the shell 7 in position, the screw 9 passing through a hole in the shell 7. A plurality'of screws 9 and bosses 8 may be used if desired. 1

The valve 10 is mounted in the passage 11 in the housing 1, the valve 10 being made of the proper diameter to efi'ectively close the passage 11 when moved to an angular position of' approximately degrees from its right ang e position to the walls of the passage 11, as shown in Fig. 8. This always insures the valve 10 being moved to an eifecti ve closed 'position Without the,danger ofthe valve 10 being moved entirely through and beyond its right angle position to the walls of the passage 11. The valve 10 is provided with boss 12 into which are securely fastened the shafts 1 3 and 14 by means of the pins 15.

The pin 13 is supported in its bearing in the Wall of the passage 11- and in the boss 16 of the housing 1.- The valve 10 may be constructed, if'desired, with the extending rib 5 1 for facilitating the holding of said valve while being machined. The pin 14 is supported in its bearing in the wall of the passage 11 and in the boss 17 of the housing 1. The pin 14 is further supported in the gland bushing 18 which is threaded into the boss 19 of the housing 1, the bushing 18 being utilized to compress the packing material 20, thus maintaining a tight joint about the shaft 14 and preventing the escape of gases around same.

' The bushing 18 is also used for locking the outer shell 7 to the housing 1, the bushing 18 passing through a hole in the outer shell 7. Also the bushing 18 compresses the gasket 21 against the shell 7, thus effectively preventing the escape of gases through the outer shell 7. The forward inner shell or tube 22 is suptermediate ported, at its inner end, by fitting over the shoulder 6 of the housing 1, its outer or front end :fitting over the shoulder 23 of the front head 24, the front head 24 being further provided with a shoulder 25 which is securely fastened to the outer shell 7.

The rear inner shell or tube 26 is supported, at its inner end, by fitting over the shoulder 4 of the housing 1, its outer or rear end fitting over the shoulder 27 of the rear head 28, the rear head 28 being further provided with a shoulder 29 which is securely fastened to the outer shell 7. The shell 26 is notched, at its inner end, to fit around the shaft 13 and the boss 17.

The forward intermediate shell or tube 30 is supported, at its inner end, by fitting over the shoulder 5 of the housing 1, its outer or front end fitting over the shoulder 31 f the front head 24. The rear inshell or tube 32 is supported, at its inner end, by fitting over the shoulder 3 of the housing 1, its outer or rear end fitting over the shoulder 33 of the rear head 28. The shell 32 is notched, at its invner end, to fit around the boss'19. The tube 33 is securely fastened to the shoulder 34 of the front head 24 and receives the exhaust inlet pipe 62 as shown by dotted lines) which is connected with the engine to be operated with the muffler. The tube 35 is securely fastened to the shoulder 36 of the rear head 28 shell 7 and the shoulders 3 and 5 and also another series of smaller holes or openings 39 lying between the shoulders 4 and 6 and the shoulders3 and 5. The openings 38 and 39 are tapered with, their larger opening areas toward the front or inlet end of the mufller. Also the openings 38 and 39 may be of the desired combined area to receive the gases or fluids flowing through them from the respective chambers 40 and 41. The forward inner shell 22 is provided with a series of holes or openings 42 and the forward intermediate shell 30 is provided with a series of holes or openings 43.

The rear intermediate shell 32 is provided with a series of holes or openings 44 and the rear inner shell is provided with a series of holes or openings 45 together with a series of holes or openings 46. The collector member 47 is securely fastenedwithin the rear inner shell 26 and has a projecting outlet 48 with an outlet orificein direct alignment with the outlet tube 35 and outlet pipe 37.

, The control lever 49 is securely fastened to the shaft '14 and is provided with the swivel- 1y mounted member 50 having a hole 51 in whichan operating wire or cable 52 may be clamped by the screw 53. If desired a rod may be used in place of the wire orcable, the

1,seo,14e

control lever 49 being changed to accommodate same.

The control lever 49 is thus connected by a wire, cable, or rod with the means used, by the operator of a motor vehicle, for the control of the fuel throttle of the carburetor of the engine. This is preferably connected with the foot accelerator controlling the fuel throttle, although, if desired, the control lever 49 may be connected with the manual throttle control for the engine.

It is to be noted that the control lever 49 is shown, in Fig. 2 out of projection with Fig. 1, the operating cable 52 here extending parallel with the muffler. However, it is to be understood that the control lever 49 may be extending the operating cable 52, or its equiv- I alent wire or rod, to connect with the mechanism operated, by the driver of a motor vehicle, for controlling the throttle in the intake passage of the carburetor of the engine with which the muflier is used. In operation, the gases enter the forward inner shell 22 through the inlet pipe 62 and the tube 33. If the valve 10 is fully or nearly closed, in a set position corresponding to a slow or an idling speed of the engine, the gases will pass through the series of holes 42 in the forward inner shell 22 to the chamber 41, from whence some of the gases will pass through the holes 39 in the housing 1, into the chamber 55, lying between the rear inner and intermediate shells 26 and 32, and from chamber 55 the gas will pass through the series of holes 45 in the rear inner shell 26, to the chamber 56, thus joining the gases which may have passed from the forward inner shell 22, by the valve 10 in housing 1, through the chamber 57 between the valve 10 and the collector member 47, into the said chamber 56. At the same time some of the gases from the chamber 41 will pass through the series of holes 43 in the forward intermediate shell 30 to the chamber 40, thence through the holes 38 in the housing 1 to the chamber 58, thence thrpugh the series of holes 44 in the rear in-. termediate shell 32, thus joining the gases in the chamber 55 on their way to the outlet tube 35 and outlet pipe 37. 7

It is to be especially noted that in my invention, the gases may pass through the holes 38 and 39 in valve housing 1 both when the valve 10 is wholly closed and when the valve 10 is wholly or partially open. When the engine with which the mufller is connected, is accelerated in speed, with its consequent greater displacement of exhaust gases, the valve 10 will be automatically opened, by means of the operating member 52 connected with the engine throttle control means, oper ated by the driver of the motor vehicle, with the result that the gases may enter the-inner shell 22 and pass at high velocity, directly through the passage 11, around the valve 10,

through the chamber 57, the collector member 47, the chamber 56, the tube 35, and thus chamber 56, with the gases which have expanded, with consequent reduced velocity,

into the other chambers, thus again increasing their velocity and materially aiding in clearing the said other compartments of their contents. r

' It is to be noted that the collector member 47 is located within the rear inner shell 26,

- at a point atthe rear of the valve 10 and at a relatively short distance away from the outlet tube 35. The collector member 47 with 'itsprojecting portion 48 forms a passage having a converging nozzle and the high velocity of the gases passing directly past .the valve 10, through the chamber 57, and

through the collector member 47 thus is increased to a still higher velocity by the converging nozzle 48 with the result that the expanded and slow moving gases in the chamber are drawn through the holes 46 in the rear inner shell 26-, thus materially aiding in accelerating the flow of gases through and out I a valve housing, said valve housing being .I claim: g 1. In a mufiler, the combm'ation of a valve,

provided with a plurality of ports,'and a plurality of tubular members oppositely disposed about said valve housing, each tubular member communicating directly with an oppositely disposed tubular member by one or ports between all of said oppositely disposed more of the housing. 45

pluralityof ports in said valve 2. Ina mufiier, the combination of oppow sitely disposed tubula'r members, a valve, an a housing surrounding said valve, said housing being located between said oppositely disposed tubular members, said housing being further provided with a plurality of tubular members to permlt gases to pass through said housing when said valve is either open or closed.

3. In a mu'filer comprising two or'more'op-- positely disposed tubes, the combination of a housing between said two .or more oppositelydisposed tubes, said housing being provided with oppositely disposed shoulders for sup portingsaid oppositely disposed tubes, an outer tubular member enclosing said two or more oppositely disposed tubular members and said housing, a valve pivotally mounted in said housing, a member -for operating said valve, said member passing throiigh said housing and said outer tubular member, packmg means around said member, and a member for compressing said packing means, said last mentioned member thereby clampin said outer tubular member in place on sai housing.

4. In a muflier, the combination of an exterior shell, one or more pairs of oppositely disposed tubular members within said exte' rior shell, and a valve housing mounted in said exterior shell between said one or more pairs of oppositely disposed tubular members, said valve housing having a plurality of oppositely disposed flanges, said flanges on said housing preventing longitudinal movement of said tubes, said valve housing being further provided with a series of ports between each of said pairs of oppositely disposed tubular members.

5. In a muffler, thecombination of a housing provided with a main valve port, said housing bein further providedwith a plurality of additional ports arranged around said main valve port, said additional ports having inlet openings of greater area than their outlet openings, and means for open-.

ing and closing said main valve port.

6. In a mufller, the combination of a shell.

having an inlet and outlet in substantial alignment, a member located between the inlet and outlet of said shell, said member being in substantial alignment with the inlet and outlet of said shell, said member being provided with ports therethrough, tubular members oppositely disposed about said member, said tubular members being supported on. said member, said tubular members communicating directly with the ports .of said member, and yalve means mounted in said member.

7. In a muffler, the combination of valve,

a housing member enclosing said valve, said housing member being provided with ports, a.

shell enclosing said housing member, and

oppositely disposed. tubular members supd ported on said housing member, said oppositely disposed tubular members communi-.

eating directly with the ports of said housingmember.

8. In a muflier,the combination oi an outer shell, 'one or more pairs of perforated tubes within said shell, a member provided with U a "plurality of ports, said member being located between each of said one or more pairs of perforated tubes, and a valve capable of being moved to a closed position between two .of' said perforated tubes.

9. In a muflier, the combination of end members each provided with a plurality of shoulders, each of said shoulders extending in difi'erent longitudinal planes, ahousing member between said end members, said housing member being provided with oppositely disposed shoulders in alignment with the shoulders of each of said end members, and tubular members between each of said end members and said housing member, said tubular members engaging the shoulders of said end members and said housing member, each of said oppositely disposed tubular members communicating directly with its oppositely disposed tubular member.

10. In a muffler, the combination of a shell for receiving and discharging fluids, a member located approximately at the center of said shell, said member being provided with a plurality of converging shaped openings, a valve in said member, a plurality of perforated tubular members engaging each side of said member, and a collector member located at the rear of the valve of said member and ahead of the discharging outlet of said chamber, said collector member being provided with a projecting outlet.

11. In a muffler comprising a plurality of shells, the combination of a housing having a central bore, said housing being further provided with one or more pairs of aligned shoulders supporting and spacing said shells, said housing being further provided with ports between each of its one or more pairs of aligned shoulders, and a valve pivotally mounted in the central bore of said housing.

12. In a mufller comprising a plurality of chambers, the combination of a valve, and .a housing surrounding said valve, said housing having a plurality of series of converging shaped openings, each of said series of converging shaped openings in said housing increasing in total opening area as they are increasingly removed outwardly from said valve.

13. In a muffler, the combination of a continuous tubular member, one or more pairs of tubular members supported in alignment within said continuous tubular member, a housing member secured to said tubular memher, said housing member separating each of said one or more pairs of tubular members, said housing member being further provided with openings communicating with the charm bers of each of said one or more pairs of tubular members, a valve pivotally mountedin said housing, and means for opening and closing said valve, the opening of said valve permitting gases to flow through said continuous tubular member or through one or more pairs of tubular members. I

14. In a mufller, the combination of a head member provided with a plurality. of shoulders, said head member being adapted to receive an inlet pipe, 'a second head member provided with a plurality of shoulders, said second head member being adapted to receive an outlet pipe, a tubular member mounted on said first mentioned and said second mentioned head members, a housing member placed between said first mentioned and said second mentioned head members, said housing member being provided with a plurality of openings for the passage of gases therethrough together with a plurality of opposite'ly disposed shoulders, a plurality of tubular members oppositely disposed about said housing member, each of said tubular members being supported on one of the oppositely disposed shoulders of said housing member and on one of the shoulders of one of said head members, a valve pivotally mounted in said housing member, and means for op erating said valve.

15. In a muffler connected with an engine having a throttle means, the combination of an inlet end having a plurality of shoulders, an outlet end having a plurality of shoulders, an outer container supported on the shoulders of said inlet end and said outlet ends, a housing located in said outer container and between the ends of said outer container, said housing having a main port together with a plurality of series of smaller ports, a valve pivotally mounted in the main port of said housing, a shaft for operating said valve, said shaft passing through said housing and said outer container, packing material' around said shaft, packing material on the outside of said shell, a member for compressing said first mentioned packing around said shaft, said member further compressing said last mentioned packing. material against said outer shell, means for operating said shaft and said valve in conjunction with the throttle means of said engine, intermediate containers mounted on said housing and said inlet and outlet ends, said intermediate containers being located between the series of smaller ports in said housing, said intermediate containers being further provided with a plurality of openings, inner containers mounted on said housing and said inlet and outlet ends, said inner containers being located between the main port and the plurality of series of smaller ports in said housing, said inner containers being further provided with a plurality of openings, and a converging nozzle in one of said inner containers.

16. In a mulller, the combination of a member comprising a central passage therethrough, a valve housing in said member, said valve housing being provided with a vertical dividing wall together with a plurality of passages arranged concentrically aroundthe axis of said first mentioned member, a pivotally mounted valve in said valve housing and in the central passage of said first mentioned member, andfmeans for operating said pivotally mounted valve, said means extending through the dividing wall of housing to the outside of the muiller.

Dearborn, Mich., January 31, 1929.

EMMET' P. GRAY.

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