US794226A - Muffler. - Google Patents

Description

' PATENTED JULY 1l, 1905. P. J. L G.- J. IHRIG.

MUFFLBR. V APPLICATION FILED MAY6,1904.

G60??? cf 17172,@

UNITED STATES Patented July 11, 1905.

PATENT OEEICE.

PETER J. IHRIG AND GEORGE J. IHRIG, OF SPRINGFIELD, OHIO.

NIUFFL'ER.

SPECIFICATION forming part of Letters Patent No. 794,226, dated July 11, 1905.

Application Bled May 6, 1904. Serial No. 206,624-

To all whom, it may 0077/067172:

Be it known that we, PETER J. IHRIG and GEORGE J. II-IRIG, citizens of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Gas- Engine Mufflers, of which the following is a specification, reference being had therein to the accompanying drawings.

` the discharge-mouth of the branch 3.

This invention relates to gas-engine mufflers, and is in the general nature of an improvement upon the construction set forth in United States Letters Patent No. 718,131, granted January 13, 1903, to George J. Ihrig and Ernest C. Ihrig as assignees of Joseph F. Kurtis and Herman F. Miller.

Ihepresent invention has for its object to simplify the construction and at `the same time increase the eiliciency of the device.

To these ends our invention consists in certain novel features, which we will now proceed to describe and will then particularly point out in the claims.

In Figure 1 of the accompanying drawings is shown a central sectional view of a structure embodying our invention in one form and in Fig. 2 a similar view in another form.

In the said drawings, 1 indicates the exhaust-pipe, to which is secured a T-shaped coupling 2, having a branch 3, which is connected with the exhaust-pipe, and two other branches 4 and 5, arranged at right angles to the branch 2 in alinement with each other and extending in opposite directions. At the point where the three members of the part 2 unite there is located a conical deflector 6, having its central axis arranged in line with the inlet branch 3 and serving to divide the exhaust and direct it into the branches 4 and 5 at the same time preventing the noise which would otherwise arise from the shock of the discharge of the exhaust if the branches 4 and 5 were continuous and presented a wall at right angles to The branches 4 and 5 are connected by pipes 7 and 8 and by right-angled bends 9 and 10 with two parallel outlet-pipes 11 and 12, provided, respectively, with exhaust-heads 13 5oand 14. As the construction of these two exhaust-heads is similar, we will describe only one of them in detail, it being understood that the same description is equally appli- The central portion of the plate 18 is formed p into a rentrant conical boss 20, which eX- tends into the interior of the bowl and forms a deilecting-cone, its sides being preferably curved, as shown in cross-section, this sectional curvature of the cone being the reverse of the sectional curvature of the bowl hereinbefore referred to. The space within the bowl between the body thereof and the cone 20 is occupied by a series of diaphragms 21, constructed substantially as set forth in the prior Letters Patent hereinbefore referred to, having their alternate inner and outer margins provided with openings 22, formed by slitting the material and bending the tongue thus formed at right angles to the diaphragms to form deflecting-plates 23, which also serve to space the diaphragms apart. 24 indicates a conical deflecting boss or cone formed integrally with the bowl 15, to which it is connected by suitably-spaced webs or bridge-pieces or otherwise secured in position within the said bowl, its location being immediately in front of the cone 20 and extending into the inlet-opening 16 of the head.

25 indicates a cup-shaped cap or closure extending over the outer end or dischargemouth of the bowl, which is provided with a seat 26 to receive the plate 19 and cap 25. A bolt 27 extends through the cones 24 and 20 and through the cap 25 and receives on its threaded outergend, which projects beyond said cap, a nut 28, by means of which the cone 24, cap 25, plate 19, and diaphragms or baffle-plates are all clamped in position within the bowl.

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It will be observed that the products of 1. are noiselessly dcHected into two diverging pipes or conduits, each of the same area as the exhaust-pipe, thereby permitting the exbranches being of a diameter substantially equal to that of the exhaust-pipe beyond their point of divergence, parallel outletpipes connected with the (ilischarge branches of' said fitting, and separate exhaust-heads haust to expand, and consequently reducing mounted on the discharge ends of said outlet,

its pressure and noise-producing capacity. This latter characteristic is still further reduced by the passage of the exhaust through the pipes 7 and 8, around the bends 9 and l0, and through the outlet-pipes 11 and l2. The divided exhaust therefore reaches the exhaust-heads 13 and 14 with a pressure considerably reduced.

Passing through these l l l l .heads the exhaust-gases, by reason of their retardation and subdivision and their passage successivelyT into spaces of' increasing capacity, are Vfinally discharged in a practically noiseless manner. It will be noted that the construction is much simpler, and consequently less expensive, than the structure set forth in the prior patent hereinbe'fore referred. to, and we have found in practice that a material gain in efficiency for the purposes sought to be accomplished is effected.

fe do not wish to be understood as limiting ourselves strictly to the precise details of construction hereinbefore described, and shown in the accoinpanyii'ig drawings, as the same may obviously be modified without departing 'from the principle o 'l our invention. For instance, and as shown in Fig. 2, one of. the exhaust-heads may be connected directly with the exhaust-pipe 1 in the case of use with small engines. The construction of the head is such that when the engine is small the exhaust will be discharged in a practicallynoiseless m anner, but in the case of engines where the shock o'l the exhaust is great then the dual arrangement becomes necessary to obtain the desired results, one of the peculiarities of operation in that ease being the subdivision of the exhaust into branches.

Having thus 'fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

l. In a muffler, the combination, with an exhaust-pipe, of a plurality of outlet-pnaes of substantially the same diameter as the cxhaust-pipe beyond their divergence therefrom, connected with said exhaust-pipe and each provided with. a separate exhaust-head discharging independently into the atmosphere, substantially as described. A

2. In. a muffler, the combination, with an exhaust-pipe, o'l a T-shaped Vfitting connected therewith by one of its branches, its other branches extending in opposite directions, said fitting having a deflecting-cone located between the two last-mentioned branches opposite the outlet-mouth of the branch which 1s connected to the exhaust-pipe, all olf said substantially as described.

3. In a muffler, the combination, with an exhaust-pipe, of a T-shaped fitting connected therewith by one of its branches, its other branches extending in opposite directions, said `fitting having a deflecting-cone located between the two last-mentioned branches opposite the outlet-mouth of the branch. which is connected to the exhaust-pipe, all of said branches being of' a diameter substantially equal to that of the exhaust-pipe beyond their point o'l" divergence, parallel outlet-pipes connected with the discharge branches ol' said fitting, and separate exhaust-heads mounted on the discharge ends of.2 said outlet-pipes, each exhaust-head comprising a bowl-shaped body having relatively large and small openings at its opposite ends, a plate extending across the outlet end, provided with outletopenings, and having a central deflecting-cone extending into the bowl, baffle-plz'ttes fitted at intervals between the said d effecting-cone and bowl, a second deflecting-cone extending into the inlet-opening of the bowl, and an outer perforated cap or closure of cup-like ferm, substantially as described.

4. In a muffler, the combination, with an exhaust-pipe, of an exhaust-head comprising a bowl-shaped body vhaving relatively large and small openings at its opposite ends, a plate extending across the outlet end, provided with. outlet-openings, and having a central deflecting-cone extending into the bowl, and baffle-plates within the bowl, substantially as described.

5. In a muffler, the combination, with an exhaust-pipe, of an exhaust-head comprising a bowl-shaped body having relatively large and small openings at its opposite ends, a plate extending across the outlet end, provided with outlet-openings, and having a central deflecting-cone extending into the bowl, bafflelates Vfitted at intervals between the sald. deflecting-cone and bowl, a second defleeting-cone extending info the inlet-opening of the bowl, and an outer perforated cap or closure of cup-like form, substantially as described.

In testimony whereof' we affix our signatures in presence of two witnesses.

PETER J. IIIRIG. GEORGE J. IH'RIG.

flfitiiesses i E. O. HAGAN, F. W. Sor-merma.

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