US1395920A - Muffler - Google Patents

Description

RI'UBENSCHEK. MUFFLER.

APPLICATION FILED II-:Ia.s,192o.

Patented Nov. El, 192.1.

SGF

UNITED STATES PATENT OFFICE.

RUDOLF LIBENSCHEK, OF PITTSBURGH. PENNSYLVANIA, ASSIGNOR 0F ONE-THIRD TO SLAVK LOVRENCIC, OF BELLEVUE, PENNSYLVANIA, AND ONE-THIRD T0 PAUL RADOCAJ, OF PITTSBURGH, PENNSYLVANIA.

MUFFLER.

Specification of Letters Patent.

Patented N ov. 1, 1921.

Application led February 6, 1920. Serial No. 356,589.

To all whom it may Concern."

Be it known that I. RUDOLF LIBENSCHEK. a citizen of the Republic of Jugo-Slavia. residing at Pittsburgh. in the county of Allegheny and State of Pennsylvania. have 1nvented newv and useful Improvements 1 n Mutlers, of which the following is a speciication.

This invention relates to muiliers. and more particularly to a. muier specially adapted for use in connection with automobile internal combustion engines, and for similar purposes. Y

One of the main objects of the invention is to provide a mufiier of the character stated which may be readily produced at small lcost and quickly and easily applied. Another ob- ]ect is to provide a muilier which will permit ready escape of the exhaust gases so Yas to' eliminate back pressure in the exhaust manifold of the engine. Further objects will appear from the detailed description.

In the drawings Figure l is a central sectional view taken through a muiler constructed in accordance with my invention approximately in the plane of section line l-l of Fig. 2.

Fig. 2 is a transverse section through the muiiler taken substantially on line 2 2 of i 1. lgig. 3 is a fragmentary side view of the inner end port-ion of the central member of the muiiier.

Fig. 4 is an end view of the same.

The mutlier is cast as a unit and includes a central tube l for receiving the exhaust gases, the inner portion of this tube being slightly flared and split to form a. clamping element la adapted to receive and be secured about exhaust pipe 2 of an internal combustion engine. Tube l communicates at its outer end with an elbow 3a `which connects the outer ends of the inner arms of two exhaust discharge tubes 3 of elongated U- shape, the outer end of the outer arm of each of these tubes being flared as at 3b to facilitate discharge of the exhaust gases. Each of the discharge tubes 3 is provided in each arm with a. plurality of baffles 1 which are disposed in staggered relation and inclined oppositely to the direction of flow of the exhaust gases. Tube l is provided with similar baifles 5, the outermost batlle 5a of which is disposed at right angles to the other battles 5. An inwardly tapering dividing element 6 extends inwardly from the central portion of elbow 3a and serves to divide the column of exhaust gases discharged from baille 5a into two substantially equal portions which fiow through the respective discharge tubes 3.

I have found by experience that very good results can be obtained with a mutHer constructed in this manner. even when' the baiiles 1 and 5 are omitted. When the baiiles are employed there is practically no sound produced and. for this reason. I prefer to employ the battles, although there is very little sound produced when the baiies are omit-ted. As theV exhaust gases can flow freely through the tube l and tubes 3, there is no back pressure produced in the exhaust manifold of the engine. which is a decided practical advantage. As the muier may be produced as a unit by casting, it may be made and sold at a sufficiently low cost to justify its extensive use.-

As will be appreciated, and as indicated herein, slight changes may be made in the construction and arrangement of the details of the invention without departino from the field and scope of the same, and intend to include all such variations as fall within the scope of the appended claims, in this application in which a preferred form only of my invention is disclosed.

What I claim is:

l. In a muiiler, a central exhaust receiving tube, and lateral discharge tubes of substantially elongated U-shape communicating at their inner ends with said exhaust receiving' tube, the arms of each of said discharge tubes being parallel with each other.

2. In a muilier, a central exhaust receiving tube, lateral discharge tubes of substantially elongated U-shaped communicating at their inner ends with said central tube at the outer end thereof, and means for dividing the column of exhaust gases as it leaves the central tube so as to direct equal parts of the gases into the respective exhaust tubes.I the arms of each of said discharge tubes being parallel with each other.

3. In a muiiler, a central exhaust receivin tube, lateral discharge tubes of substantially elongated U-shape communicating at their inner ends with said central tube at the outer end thereof, and a member projecting inwlardly of the discharges-'tubes centrally of.

f respective discharge tubes, the armsof each Yof said discharge being parallel vvith' each other. 4. In a muier, a central exhaust receiving tube, lateral discharge tubes of substantially elongated U- v`inner ends with'said vcentral tube at the outer end thereof, a member projecting" inwardly of thev discharge tubes centrally of the outer end of said central tube, said member being disposed .atl

so as toldirect to direct equal portions thereof into the v hapev communicating at their ight angles to the plane of the' k'lateral disc arge ytubes and acting to divide the column of exhaust gases equal A`portions thereofvinto the respective discharge tubes, tubes, the outermost baiile inthe central tube eing disposed atright angles to said memer. f 1.

5. In a muler, a centralexhaust `receiving tube, and lateral discharge tubes of substantially elongated U-'shape communicating at their inner ends with said exhaust receiving tube, the arms vof the respective discharge tubes bein disposedin substantial parallelism with t e receiving tube.

6. In a muffler, a central exhaust receiving tube, and lateral discharge tubes ofl substanand baies mounted in the tially elongated U-shape communicating at.

their inner ends with said exhaust receiving tube, theA arms of the respective discharge tubes being disposed in parallelism with each other and with the receiving tube. v I n testimony whereof Iaiix my signature.

. RUDOLF LIBENSCHEK.

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