US2232395A

US2232395A - Automobile exhaust shroud

Info

Publication number: US2232395A
Application number: US99896A
Authority: US
Inventors: Jr Louis A Koch
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-09-08
Filing date: 1936-09-08
Publication date: 1941-02-18
Anticipated expiration: 1958-02-18

Description

L. A. KOCH, JR

AUTOMOBILE EXHAUST SHROUD Feb. 18, 1941.

Filed Spt. 8, 1936 a b D 1 .EJ. ml

INII/ENTOR. 4K0 cfi llllllllllllll lln A TTORNEY,

:55- rear of an automobile, while Patented Feb. 18, 1941 PATENT orricja' 'AUTOMOBILE EXHAUST SHROUD Louis A. Koch, Jr., Louisville, Ky.

Application September 8, 1936, Serial No. 99,896

8 Claims.

My invention pertains to specific structures of automobile exhaust extensions or shrouds.

Since the pipe which conducts the hot exhaust gasesfrom internal combustion engines to the rear of automobiles for expulsion soon becomes rusty and unsightly from being subjected to extreme temperatures and the elements, brnamented exhaust extensions have been evolved to conceal the exposed discharge end of the pipe and to direct the gases with entrained carbon particles 50 as to prevent marring the exquisite finish of the modern automobile. In the beginning these devices were made of base metals which soon rusted, then enamels and nickel plate were applied and discarded asincompetent. This was followed by chromium plate and stainless steel together with a reflector element, sometimes referred to as a jewel. or reflex unit. The latter were applied by conventional methods such as a bezel and screw or prongswhich entailed perforating the outer surface of the terminus or shell like portion of the shroud for receiving the screw or prongs. These perforations, even though apparently closed by the screw or prongs, provided a passage for the hot gases to the exposed highly finished surface. This resulted in damaging the embellished surfaces and the reflex unit. Therefore the main object of this invention is to provide permanence for the embellishing elements. A further object lies in providing means to accomplish this desirable result without materially affecting the cost of production and thereby provide the' public with an enduring exhaust ex- 35 tension at the same established or popular price. With the'foregoing and other objects, which will be revealed as the description of the details of the structure proceeds and hereinafter claimed, it must be understood that changes from 40 the selected embodiment of my invention can be made without departing from the scope of my invention.

Preferred embodiments of my invention have been illustrated in the accompanying drawing in which-- Figure 1 is a plan view of my automobile ex-. haust shroud.

Fig. 2 is a side elevation of Fig. 1 shown partially in section. 1

.Fig. 3 is an and elevation of Fig. 1.

/ fashioned to telescopically embrace conventional exhaust pipe the end of a la represents sub- Reference numeral l indicates a tubular sleeve terminating at the stantially parallel juxtapositioned tongues extending from said sleeve and perforated to receive bolts b, all of which are organized for secure attachment to said pipe. I

Numeral ll indicates a projecting flared shell- 5 like body of steel, open at the bottom and referred to herein as a terminus. The primary function of this body is'to rearwardly convey and downwardly direct the exhaust gases which frequently reach a temperature of 875 F., while 10 the secondary function is to obscure the rusty exposed surface of the exhaust pipe. Superposed on and spaced from the terminus is a stainless steel covering or veneer indicated by numeral 2 secured thereon by clinched tongues 2a or their equivalent. Between the terminus and veneer is disposed an insulating medium 3 provided to prevent the heat from being transmitted to the veneer, thereby protecting it from discoloration. It has been found that shrouds made of standard chrome nickel stainless steel will yield to the encountered heat by developing I a straw color. To make the shroud entirely of. stainless steel results in a prohibitive price. The incident invention contemplates using common low priced sheet steel for the portion of the shroud indicated by numerals l and II, superior stainless steel or other highly finished metal for the exposed veneer 2 and then protecting it against discolorationby insulating as adverted to supra. This procedure eliminates the expense of. applying chrome or other expensive plating to the entire exhaust extension and substitutes therefor an inexpensive, sheet metal stamping which can be of base material having the exposed surface of the veneer highly finished and protected by insulation.

The veneer can be perforated to receive reflex unit J. It will be noted that the jewel is also so located that it will be protected from the heat and gases and that there are no perforations extending through the terminus body which have been found to provide a passage for heat and the exhaust gases.

It will thus be perceived that the objects of this invention as adverted to at the outset can be' realized by practicing the teachings disclosed herein.

I claim:

1. An extension for a motor vehicle exhaust pipe comprising a tubular sleeve portion, and remote thereto a terminus to direct exhaust gases from said pipe, the outer surface of said terminus being equipped with a veneer which embraces a portion of a reflector body.

2. An extension for a motor vehicle exhaust pipe comprising a. tubular sleeve portion, and remote thereto a terminus to direct exhaust gases from said pipe, the outer surface of said terminus being equipped with a veneer and provided with means for insulating said veneer from the heat of said exhaust gases.

3. An extension for a motor vehicle exhaust pipe comprising a tubular sleeve portion, and remote thereto 9. terminus to direct exhaust gases from said pipe, the outer surface of said terminus being equipped with a veneer and means for utilizing said veneer to support a reflector body on said terminus.

4. An extension for a motor vehicle exhaust pipe comprising a tubular sleeve portion, and remote thereto an imperforate terminus to direct exhaust gases from said pipe, the outer surface of said terminusbeing equipped with a veneer 6. A tail pipe spout comprising an inner wall structure, an outer wall structure thermally insulated from the inner wall structure, said outer wall structure extending ove and concealing the inner wall structure and providing a decorative covering therefor, and means for securing the said structures to a. tail pipe in such posltion that exhaust gases from said pipe will be discharged against said inner wall. 7

'7. A tail pipe spout comprising an inner wall structure, an outer wall structure spaced from the inner wall structure, a solid material of low heat conductivity in the said space, said outer wall structure extending over and concealing the inner wall structure and providing a decorative covering therefor, and means for securing the said structures to a tail pipe in such position that exhaust gases from said pipe will be discharged against said inner wall.

8. A tail pipe spout comprising an inner wall structure adapted to extend beyond the tail pipe and having a cut-away portion to deflect the discharged gases, an outer wall structure thermally insulated from said inner wall structure and extending over and concealing the said inner wall structure to provide a decorative covering therefor, and means for securing the spout to the tail pipe.

LOUIS A. KOCH, JR.