US1512859A - Muffler - Google Patents

Description

Patented oct. 21, 1924. 1,512,859l

UNITED sTATEs PATENT OFFICE..

HERBERT S. POWELL, F UTICA, NEW YORK.

MUFFLER.

Application led July 17, 1919` Serial No. 311,574. y

Toallwhomitmag/ concern: The cups 3, 4 and 5 are made of drawn Be it known that I, HERBERT S. POWELL, metal and are each provided with an ana citizen of the Unitedv States, residing at nular shoulder at 7 formed by the inden- Utica, in the county of Oneida and State of tation of the lower edgev thereof. The New York, have invented certain new and shoulder 7 so formed provides a seat for the 50 useful Improvements in Muilers, of which upper edge of the next adjacent cup, wherethe followin is a specification, reference by the whole will fit together in an air tight being had t erein to the accompanying manner and make a flush outer surface for drawing. the muilier. The cups form a plurality of 10 My invention relates to a muiiler and I chambers for the diffusion of the exhaust. 65 declare the following tobe a full, clear, com- The top plate -1- has a depending ange plete and concise description thereof suffi- 9 adapted to orm a shoulder for assembling cient to enable anyone skilled in the art to the adjacent edge of the rst cup 3. Likewhich it appertains to make and use the wise the bottom plate 2 has a llange 10 to i same, reference being had to the accompanyform a shoulder for assembling the adjacent 70 ing drawings in which like reference charedge of the ring 11 that is used to help make actefrs refer to like parts throughout the the final chamber. The bottom plate 2 has specification. y made integral therewith a conduit 12 for The object of the invention is to construct the escape of the exhaust to the outer at- I0 a muier that will be strong, durable and mosphere. 75

eicient for deadening the sound caused by The top and bottom plates 1 and 2 and the exhaust of an explosive engine. To this each. of the cups 3, 4 and 5 have apertures end the muiiler is equipped with a plurality for the projection therethrough of the rods of sections made of cups that have aper- 6. It will be observed, however, that the tures disposed in the bottom plates thereof. apertures for the projection of the rods 6 80 These apertures are arranged to compel the alternate between small and large ones, as exhaust to take a tortuous course through 14 and 15. `The small apertures 14 are the muliler, whereby to break up the force of adapted to fit snug around rods 6 to said exhaust as it comes from the engine thereby aid in holding the whole series of U0 and thereby permit it to escape to the open cups more rmlytogether, so as to prevent 85 atmosphere unaccompanied by a terrific any rattling, whereas the large apertures 15 sound. Furthermore, the object is to tit the assist the progress of the gases through the sections in an air tight manner and with a muler and, moreover, are sufliciently large,

flush outer surface. so that the cups do not make contact with The object will be understood by referrods 6. Therefore, the contraction and ex- 00 ring to the drawings in which: pansion of cups having apertures 15 will not Fig. 1 is an elevation of the muier; f bend rods 6. Fig. 2 is a vertical central section of the The gases of explosion enter the muler same; lby way of the opening 16 and progress Fig. 3 is a top plan view of the muflier; through the same in a tortuous course 05 Fig. 4 is a top plan view of one of the which is eected by the arrangement of the cu s employed; apertures in the bottoms of the several cups ig. 5 is a top plan view of another cup 3, 4 and 5. Each of the cups 3 is provided employed, showing a different arrangein the base thereof with a large central aper- 65 ment ofthe aperture in the bottom thereof; ture 17 and with small peripheral apertures 100- Fig. 6 is a top plan view of still another 18, usually twenty-seven in all, as shown in eup employed, showing a still different ar- Fig. 4. Each of the cups 4 has a set of rangement of the apertures in the bottom small apertures 19 disposed in concentric thereof. circles, as shown in Fig. 6. Each of the Referring more particularly to the mufcups 5 has a large central aperture 20, as 105 ler, the top late 1s represented by -1--, shown in Fig. 5. the bottom plate by 2 and the intermediate The progress of the gases of explosion cups by 3, 4 and 5.. The parts are held tothrough the mutller is shown by the dotted gether by stay rods 6-6, twol usually being lines in Fig. 2, and is uniform through the Il sucient. first four chambers or cups 3, where it passesv 11o through the central apertures 17 and the small peripheral apertures 18, until said gases reach the fifth chamber or cup 4 which has small lconcentric apertures 19 and no large central aperture 'as 20, thereby causing the more complete diffusion of the gases throughout its chamber. On reaching the lnext chamber or cup 5, which has only a large central aperture 20, the gases come together to pass therethrough. The next chamber which is made of another cup 4: has

the concentric apertures 19 that again cause- From the last e the lower edges of said sections to form seats for the upper edge of the next adjacent section, to form an air tight joint, end members having annular flanges for' fitting said sections thereto, large central apertures made in the first four sections to permit the expansion of the gases, small peripheral and large central apertures in others, alternating with small concentric apertures in still others, and said sections so arran ed that the large central apertures are uni orm for the first four sections to allow for the expansion and for the alternate contraction and expansion through the others, whereby the gases will take a tortuous course, headed \stay rods bolted at one end Jfor holdind the sections together and said stay rods adapted to project through certain of said peripheral apertures that alternate between clos and loose fitting to said stay rods.

In testimony whereof l have alixed my signature.

HERBERT S. POWELL.

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