US1215185A - Muffler cut-out for motor-cars. - Google Patents

Description

N. A. PE'IRY` MUFFLER Curnou Foa MOTOR CARS,

APPLICATIONFILED MAR. l0. i916.

N. A. PETRY.

MUFFLER CUT-OUT FOR MOTOR CARS.

APPLICATION rlLED MAR.10. |916.

l 9g, l 59 l u Patented Feb. 6, 1917.

2 SHEETS-SHEET 2.

*Marianas A. remar, or PHILADELPHIA., PENNSYLVANIA.

MUFFLER CUT-OUT FOR MOTOR-CARS.

Specification of Letters Patent.

Patented Feb. 45, 193W..

Apr ication led March 10, 1916. Serial No. 83,255.

A. PETRY,

My invention'relates to that class of mui-` ier cut-outs in which a casing interposed in the exhaust pipe is provided with a. valve adjustable to cut ofi'. the muiiier and direct themthrough an outlet inthe casing, or so as to close said outlet and permit the gases to flow through the casing to the muiiier, the object of my invention being to vsimplify and cheapen the construction and to improve the operation of a mufller cut-out of this type.

, In the accompanying drawings Figure l is a longitudinal section of a mufller cut-out constructed in accordance with my invention;

Fig. 2 is a perspective View of one half of the same, and of the valve removed therefrom;

Fig. 3 is a 3 3, Fig. l;

Fig. is a transverse section on the line 4 4, Fig 1;

Fig. 5 is a transverse section on the line horizontal section on the line Fig. 6 is a side elevation of one half of a special form of casing, the valve used in connection therewith eng shown in section' Fig. 7 is a transverse section ofthe complete casing on the line 7 7 Fig. 6, and

Fig. 8 is a view similar to lFig. 3, but lllustrating still another type of casing. The muffler cutout constructed in accorde ance with my invention consists ofV a casing fitted at its opposite ends to the adjoining portions 11 11a of the exhaust pipe of the engine, through which the travel, in the direction of the arrowa1 Flg. l, from the engine to the muffler mounted on the portion 1l*L of the exhaust pipe.

The interposed casing comprises a central member 12 of rectangular cross section with longitudinally curved top and oppo# site end members 13 and 13a of circular cross section for being fitted to the opposite members 11 11a of the exhaust pipe, the central portion 12 of theA casing containing a chamber 12" having at the bottom adown flow of gases to the exhaust gases wardly nel 12". i

When the casing is composed of cast metal, it preferably consists of opposite halves meeting on the central longitudinal line of and rearwardly discharging funthe casing,so that they can be cast without cores, the two halves of the cas.

the vuse of lng being secured `together and to the pipe sectlons 1n any suitable manner, as for 1nstance by providing them with lugs 14 for the reception of clamping bolts.

Extending transversely across and projecting upwardly at an angle into the chamber'l2a of the casing is a partition l5 hav ing, at its inner end, a segmental rib 16 with transverse opening extending through the same for the reception of the hub member 17 of a valve plate 18 which, when so mounted in said rib, (and preferably also in bearings in the side plates of the casing) can be swung either upwardly to the position shown by full lines in Fig. A'1, or downwardly to the position shown by dotted lines therein.

When the valve is inthe position shown by full lines it directs the exhaust gases from the pipe 11 downwardly through the chamber 12a below the partition 15 and out through the funnel 12b in the lowerportion of the casing, and when said valve is in the position shown by dotted lines it directs the exhaust gases upwardly through the chamber 12a over the top of the partition 15 and into the mufiler pipe lla, the valve when in either position deliecting the gases without any abrupt change in the direction of flow and therefore without any material resistance to such flow.

The deiector for the gases therefore combines a permanent member (the inclined partition 15) and an adjustable member (the valve 18) the member 15 acting constantly,- and the member 18 determining whether such deflection shall be over or under the permanent member 15.

The inclined partition 15 is preferably formed in one piece, integral with on'e side of the central member 12 of the casing,A as shown in Fig. 2, so as to dispense with any central joint in said can, without departing from the essential features of my invention, becomposed of halves each carried by its respective half of partition, although it lll@ A muier cut-out constructed in accordance with my invention is composed of but ievv parts which can be fitted together with` out expensive machining and each of these parts can be cheaply produced. A still' cheaper method of production can, as shown in Figs. G and 7, be adopted by making the opposite halves of the casing of pressed steel or other sheet metal, the central partition in such ease being' separate from the sides "oit the erasing' and being secured thereto b'y means of ay lange-Tormation 19 at either or both edges of said partition, which liange can be secured to the respective side ol the casing by electric welding or other simple means, the same means being enn'iloyed for securing in place a flange .20 which constitutes a seat Jfor the valve 18 when the latter is in position to close the cut-out passage.

In order to facilitate the formation ot the hollow segmental rib at the top edge of the partition When this method of manufacture is adopted, said partition is preferably com posed of two plates 15a and 151 ivelded or otherwise secured together and each havingf at its upper edge a curved flange 16lL or 16h constituting, respectively, `the upper or loner member of said segmental rib.

When the opposite halves of the casing are Composed of pressed metal, as described, the two halves may be connected in any suitable Way, as for instance by crimping together edge flanges on the opposite halves of the casing, as shown in Fig. 7.

Another method of forming the casing' of the cut-out w'ithin the scope oi my invention is to cast the same in one piece, as shown in Fig. 8, but. in such case, cores have to be employed in the mold and an opening 21 will have vto be formed at one side of the casing' forthc insertion of the valve 1:8 and its hub 17, such opening be-I ing subsequently closed by a plate 22. a

Preferably also, in this case, a similar opening with detachable closure is `provided c at the opposite side ofv the casing1 in order to permit ready machining of the valve seats, ii the same is required.

When suiiicient bearing is provided in the opposite sides ot the casing 1Q 'for the pivot hub 17 oi the swinging valve the segmental rib :it the inner end of the partition l5 may in some cases be omitted, such pivot hub bearing against the inner end ot the partition to lorm a reasonably .tight joint therewith.

The projecting end of the pivot huh of the valve is intxnidcd to be provided with an operatingr arm or lever whereby it can be readily swung to one position or the other, and such lever is prefcrablY acted upon by a suitable spring tending to move the valve 18 into position to close the cut-out passage.

'.lhc curved top 12 of the' .casing is concentric ivitii. the easing of the seat for the -side ends-of the casing necting` member valve stem at the inner end of the partition l5, hence. the area of the passage-12a above the partition is, in all of its parts, equal to the area of the valve seat at the forward end of the passage.

The hollow segmental rib 16 at the inner end of the partition 15 is in excess of a semicircle so as to overlap the segmental rib 17 on the valve and 'thus prevent radial removal ot' the valve from its seat in any position of adjustment of said valve.

When, as in a mulller cut-out, members for attachment to the muffler pipe are at oppoand the cut-out at an anglev from the conthe use of the inclined inivardly projecting partition l5 permits of the formation of a portion of the cut-out passage within said connecting member,and thus reduces the sizeoil the latter and also its weight, as compared with that of one having a cut-out passage wholly beyond the bottom of the connecting member, While at the same time the use of the inwardly inclined projecting partition reduces the radial projection of the valve beyond its seat to such an extent that it is less than the diameter of the end members.

l claim:

1. A muier cut-out comprising a casing having a central member with longitudinally projecting end members for application to the muffler pipe, and a cut-ont branch projecting from said central member at an angle to the pipe receiving members, said central member also having an inwardly projecting,r transverse partition disposed at an angle to the axial line of the end members, and a lswinging valve pivoted at the inner end oli said partition and adjustable to a position te close the through passage or to a position to close the cut-out branch, the `latter/` being formed partly within the centrall member of the casing.

2. A mulller cut-out comprising a Casin having a. central member with longitudinally curved top and straight, sides, longitudinally projecting end members for application to the muffler pipe, and a cut-out branch projecting -from said central member at an angle to the pipe receiving members, said central member also having an inwardly projecting inclined transverse partition, and a swinging valve pivotally mounted. at the inner end thereof, and free to assume a position substantially in line with the partition for closing the longitudinal passage through said central member or a position substantially at a right angle to the inclined partition for closing the entrance to the cut-out branch.

3. A muffler cut-out having a. casing comprising a central member with longitudinally projecting end members for applicabranch projects tion. to the muffler pipe, a cut-out branch aso mirarse m projecting from said central member at an angle to the pipe receiving members, an inL VWardly projecting inclined transverse partition and a valve pivotally mounted at the inner end of the latter and adjustable in respect thereto so as' either to close the muilier pipe and -open the cut-out branch or close the cut-out branch and open the muier pipe, said casing being composed of laterally sepaf rable members and sa'iil inclined transverse partition extending across the casing from side to side and being formed integrally with one of said laterally separable members.

4. A mufHer cut-out comprising a casing having a central member with longitudinally projecting end members for application to the muiiler pipe, and a cut-out branch projecting at an wangle to said end members, said central member also having an in- Vjustable in respect thereto sov as either to close the muffler pipe and open the cut-out branch or close the cut-out branch and open the muler pipe, that portion of the valve which projects beyond its seat on the partition being narrower radially than the diametr of the pipe receiving members.

In testimony whereof I have signed my name to thisfspeclticatlon 1n the presence of two subscrlbmg witnesses.

NICHOLAS A. PETRY.

Witnesses:

KATE A. BEADLE, HAMILTON D. TURNER.

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