US638776A - Exhaust-muffler for engines. - Google Patents

Description

Patented Dec. I2, I899.

F. VAN UUZEN.

EXHAUST MUFFLER FOR ENGINES.

(Application filed Feb. 25, 1889.)

(No Model.)

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UNITED STATES PATENT OFFICE.

FRANK VAN DUZEN, OF MARION, OHIO.

EXHAUST-MUFFLER FOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 638,776, dated December 12, 1899.

Original application filed August 18,1898, Serial No. 688,920. Divided and this application filed February 25, 1899. Serial No.

To all 2077 0771, it may concern:

Be it known that I, FRANK VAN DUZEN, a citizen of the United States, and a resident of the city of Marion, in the county of Marion and State of Ohio, have invented certain new and useful improvements in exhaust-mufflers for engines operated by the explosion of gas, gasolene, kerosene, and other coal-oils and hydrocarbons, of which the following is a specification.

My invention relates to improvements in handling apparatus and the mode of operating the same.

The invention herein set forth was contained in an application for Letters Patent of the United States filed by me on August 18, 1898, in the Patent Office of the United States, which application bore the serial number 688,920. A division of said application having been required by the Commissioner of Patents, the invention first aforenamed has been transferred to this specification.

The several features of my invention and the various advantages resulting from their use conjointly or otherwise will be apparent from the following description and claim.

I In the drawings illustrating my invention I have shown it in connection with that kind of a cylinder which has one open and one closed end, the moving power or impulse acting on one side of the piston-via, between the piston and the closed head of the cylinder.

In the accompanying drawings, making a part of this application, and in which similar letters of reference indicate corresponding parts, Figure 1 shows in elevation means of my invention for niuffiing the sound of the discharge of the gases passing from the engine and also shows in elevation certain portions of one of the various kinds of engines to which my invention can be applied. Fig. 2 is a vertical section through the muliiing apparatus and the exhaust-passages, cylinder, and connection-rod, but showing in elevation the crank-arm and a part of the flywheel. Fig. 3 is a top View of the mufflerchaniber, valve, valve-rod, lever, and a portion of the rod for operating this lever. Fig.

at is a section of one of the concentric cylinders of the muffiers, illustrating how the latter are perforated.

(No model.)

The cylinder A is shown provided with the usual water-jacket A A indicates the cylinder-head. (Shown in Fig. 1, but omitted in Fig. 2.) E indicates the piston, slidable within cylinder A. The crank-shaft E of the engine carries a fly-wheel E, the latter being shown in solid lines in Fig. 1 and in dotted lines in Fig. 2. The crank E is rigidly connected at one end to the shaft E and at the other end carries the customary crank-arm E, to which latter one end of the connectingrod or pitman E is pivotally connected. The other end of this connecting-rod E is pivotally connected to the pivot-shaft E of the piston E The mode in which these parts operate is obvious and well known.

As the noise caused by the first explosion (or exhaust) of the engine, and, indeed, of the successive exhausts, may be disagreeable and in many cases be undesirable, particularly in frightening horses on the road or elsewhere when the same is used for traction or portable purposes, it becomes desirable to provide means for deadening the sound of the exhaust on such occasions. Such means are as follows: As the exhaust-gases pass through the exit-port J of the engine and through the passage J as soon as valve J is opened by suitable means I conduct them into a muffier-reoeptaole K by connecting the passage J to the mufller-shell. Between the end K and the end K are a series of concentric cylinders K each outer one larger than the preceding and a space K being between each cylinder and the next one. These cylinders are held in place by the end K and the end K Through one cylinder near its top is a row of perforations K, and near the bottom of the next cylinder is a row of openings K, and so on, alternating until the outer cylinder is reached, and then the final exit-holes K are in the end K or the end K preferably in the latter. The end K has a valve K fixed to and hung on a rod K journaled in eyes or bearings K on the top of the mufliing vessel. There is a lever K connected rigidly at one end to the rod K and at the other end pivotally connected to the end of a pull rod or rope K preferably the former and to enable this to be set at a desired point there are notches in the rod adapted to engage a stud K, (see dotted lines,-Fig. 1,) located on a fixed portion of the apparatus. By moving the rod K in one direction the valve or damper K is opened, thus allowing the products of combustion to go directly out into the open air by passing through the central portion of the muffler. In such event the exhaust has its full resonance of sound and the engine has its full Working power, as there is no back pressure on the exhaust. By moving the rod K in the opposite direction the damper K is closed and the gases of the exhaust are compelled to travel through the holes K of the cylinders and the spaces K between them and the outlet-holes K thereby breaking up and silencing the roar attendant upon the exhaust when allowed to escape directly from the engine.

\Vhat I claim as new and of my invention, and desire to secure by Letters Patent, is-

In an engine,the combination of an exhaust, and a mufiler consisting of concentric cylinders, with holes alternately at adjacent ends, and held between plates, one of which has a hole of exit, the central passage of the muffler being in connection With the exhaust, and a valve for closing this passage into the open

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