US1183361A - Muffler cut-out. - Google Patents

Description

A. A. 1v1/ALD.v

MUFFLER CUT-OUT.

APPLICATION FILED IAN. 21|, 1915.

Patented May16, 1916.

2 SHEETS-SHEET l.

THE COLUMBIA PLANUGRAPH co.. WASHINGTON, D. C.

A. A. EWALD.

MUFFLER CUT-OUT.

APPLICATION FILED 1AN.2I. 1915.

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MUFFLER CUT-OUT.

Specification of Letters Patent.

Patented May 16, 1916.

Application led January 21', 1915. Serial No. 3,541.

To all whom t may concern:

Be it known that I, ARNO A. EwALD, a citizen of the United States, residingat Oakfield, in the county of Fond du Lac and State of Wisconsin, have invented certain new and useful Improvements in Muffler Cut-Guts; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in muiier cut-outs and more particularly to those adapted for use on motor vehicles.

The main object of the invention is to provide a device of this character which may be stamped from a number of at sheets of metal, preferably steel, thereby facilitating the manufacture of the device.

A further object of the invention is to so construct the cut-out as to allow exhaust gases to readily escape without passing through a number of couplings as is common with mostforms of cut-outs now in use.

In carrying out this last named object, a further object is to provide a lever fulcrumed between its ends to swing in a plane transverse to the exhaust pipe, to curve one end of said lever to conform to the shape of the side of the exhaust pipe having the opening, and to widen this part of the lever, whereby it constitutes a valve plate.

Yet another object is to provide a single coil spring for returning a foot pedal, `used in operating the cut-out, and the cut-out to normal position.

With the above and minor objects in view, the invention resides in certain novel features of construction and combination herein described and claimed and shown in the drawings wherein Figure 1 is a top plan view of a portion of an automobile, showing the application of the invention thereto; Figs. 2 and 3 are vertical transverse sections as seen on the lines 2 2 and 3u?) of Fig. 1, the cut-out being shown respectively in open and closed positions; Figs. 4 and 5 are respectively top and bottom plan views of the cut-out and a portion of the exhaust pipe; Fig. 6 is a horizontal section taken on the plane of the line 6 6 of Fig. 3; Fig. 7 is a disassembled perspective view of a clamp to be described; and Fig. 8 is a similar view of the above mentioned lever.

In these drawings, constituting a part of this application, a portion of an automobile A is shown which is equipped with an engine E, an exhaust pipe P which leads rearwardly from said engine beneath the floor of the car, and with a muffler M which is located near the rear end of the pipe P. At a point interposed between the muffler M and the engine E, the pipe P is provided with a circular opening O. It is the purpose of the present invention, to open or close this opening at will. In accomplishing this result, the structure now to be described is employed.

Contacting with the lower side of the pipe P, which side is equipped with the opening O, is a semi-circular clamping plate 1 which is provided with a central opening 2 registering with said opening O as clearly seen in Fig. 3. The upper edges of the plate l, are bent laterally to form attaching flanges 3 and 3', the intermediate portion of the latter being bent downwardly to provide pivot ears 4. Coacting with this clamping plate l is a second semi-circular clamping plate 5 which embraces the upper ,half of the pipe P and whose lower edges are bent to provide laterally extending flanges which overlie the flanges 3 and 3', bolts 6 being then passed through these flanges, whereby a complete clamp is provided, which is readily adaptable to most types of exhaust pipes.

Fulcrumed between its ends upon a pin 7 which passes through the two ears el, is an operating lever 8 which is preferably formed of steel so pressed as to provide a pair of depending pivot ears 9 which contact with the ears l and through which the pin 7 passes, one end of the lever rising from the ears 9 while the other end thereof curves downwardly and laterally therefrom beneath the semi-circular plate 1. At this point, the lower end of the lever 8' is so curved as to conform to the shape of the plate l and is widened as seen at l0, to provide a valve plate for normally closing the v o enin therein, said late bein here shown P e P g having its opposite end connected to the lower end of the upright arm 14 of a bell crank lever 15, the latter being fulcrumed to tal arm pivoted to an upright link 16 whose upper end is equipped with a foot pedal 17. As most clearly seen in Figs. 2 and 3, the arm 14@ of the bell crank lever is also connected to the opposite end of the lever 8, by a link 18, whereby depression of the horizontal arm bysaid lever will move the lever from the position seen in Fig. 3 to `that seen in Fig. 2, whereupon the exhaust gases are free to travel outwardly through ,the openings O and 2. This movement on the part of the bell crank and lever places the spring 13 under tension, which tension is then eX- erted to return the ports to normalposition, when so desired.

In most cases, it becomes expedient `to provide means whereby the cut-out may be maintained in open position. For thispurpose, one edge of the link 16 is provided with a notch 19 which is `engaged with a portion of the bracket through vwhich it slides, as indicated in dotted lines in Fig. 2.

From the foregoing description, it will be seen that a very simple and efiicient device has been provided which maybe easily and inexpensively manufactured of pressed steel or other suitable material, and that although a number of moving parts are employed, but one spring is necessary for returning all of these parts to their normal positions.' Furthermore, this one spring, designated by the numeral 13 in the drawings, also normally moves the arm 14 toward the the lever 8, thereby retaining connections of the link 18 with said arm Vand said lever, in tight contact, thereby preventing rattling of the various parts ofthe device.

I claim: 1. .The combination with an exhaust pipe having an opening,

Copies of this patent .may lbe obtained fvor'voe cents each, py Aadrgresjsi-11ng `the upper end of the pivotal.

of a semi-circular clamping Plate contacting throughout its width with said side of the pipe, said plate having an opening Aregistering with that in the pipe, a clamping member passing around the other side of the pipe and secured to said clampin plate, whereby a complete clamp is proviA ed, a lever fulcrumed to said clamp to .swing in a p lanetransverse to the pipe, and a valve plate carried by the lever, curved to conform to the Shape of `thefsen'ii-circular clamping plate and normally closing the opening therein.

V2. rIlhe combination with an exhaust vpipe having an opening, of a semi-circ`ular clamp# ing plate contacting ,throughout its width with said side ofthe pipe, said plate having an opening registering with that in the pipe, a clamping member passing around the other' side of the pipe' and secured to said'clamping plate, whereby acomplete clamp is provided, a lever .fulcrumed between its ends to said clamp ,to swing in a plane 4transverse to the pipe, the portion of said lever to one side of its `fulcrum being VVwidened andcurved to conform to the shape Vofthe semicircular clamping plate, whereby to constitutea `valve for closing the opening therein, and means connected with the other end of the lever for rocking the same around its pivot ,to `movev said plateto inactive position.

`3.y In combination, a muffler cut-out includinga lever fulcrumed between lits ends,

an operating lever spaced laterally from the cut-,out and having an end .movable (away therefrom, alink connecting lsaid end `of the operating vlever l.with one ,end of thelever on thecut-out, `anda coil spring connecting fthe Y otherend of 4 said lever on .the cutiout with the laforesaid end of the operating lever.

In testimony whereof I havehereunto set my hand in .presence of two subscribing witnesses.

' Anno A. EwALD.

Witnesses:

F. E. WILLARD, l W. E. sBRISTOL.

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