US2678067A - Exhaust efelector - Google Patents

Description

Patented May 11, 1954 2,678,067 EXHAUST DEFLECTOR Linus E. Russell, Springfield, Ohio, assignor to Peters & Russell, Inc.

poration of Ohio Springfield, Ohio, a cor- Application July 21, 1948, Serial No. 39,955

2 Claims. 1

This invention relates to exhaust deflectors of the kind mounted as extensions upon the tail pipes of automobiles, and more particularly to extensions of the jet or Venturi type.

Devices of this class have a multi-fold function or purpose. They deflect the hot gases of combustion away from the chrome finished and painted surfaces of the automobile and ornament the appearance of the car. Units of the present type also materially aid in exhausting the gases from the tail pipe.

Exhaust deflectors are the subject of considerable experimental design looking toward improvement in respect of one or more of the above features, and with the further view of simplifying the construction to the end that the manufactun ing cost may be reduced. The latter is important since the devices are made to sell in a low price field to individual car owners. The instant invention presents an exhaust deflector in which the design objectives above noted are thought to have been achieved in a greater degree than heretofore known.

The object of the present invention is to simplify the construction as well as the means and mode of attachment of such extensions to tail pipes, whereby such devices may not only be economically manufactured, but will be more efficient and satisfactory in use, adaptable to a wide variety of tail pipes, having relatively few parts and be unlikely to get out of repair.

A further object of the invention is to provide a tubular shell type deflector, attractive in appearance and wherein the utilitarian features are substantially concealed.

A further object is to provide a simplified means for attaching the deflector to the exhaust tail pipe, which in cooperation with the tubular shell produces a Venturi action aiding in scavenging the exhaust gases.

Another object of the invention is to reduce the cost of manufacture of the deflector by utilizing a fabricated construction wherein all the parts are relatively inexpensive metal stampings.

A further object of the invention is to provide a device possessing the advantageous struc- .tural features, the inherent meritorious characteristics and the mode of operation herein mentioned.

With the above primary and other incidental objects in view as will more fully appear in the specification, the invention intended to be protected by Letters Patent consists of the features of construction, the parts and combinations thereof, and the mode of operation, as hereinafter described or illustrated in the accompanying drawings, or their equivalents.

Referring to the accompanying drawing, wherein is found the preferred but obviously not necessarily the only form of embodiment of the invention,

Fig. 1 is a perspective view of an exhaustdeflector embodying the present invention;

Fig. 2 is an end elevation of the exhaust defiector.

Fig. 3 is a view of the exhaust deflector in side elevation; and I Fig. 4 is a view in longitudinal section taken along the line 4-4 of Fig. 3.

Like parts are indicated by similar characters of reference throughout the several views.

Referring to the drawings, the illustrated embodiment of the invention comprises a. generally tubular shell in made up of mating sections H and I2 having a semi-tubular shape viewed in cross-section. The longitudinal edges of the respective sections II and I2 are turned outward to define flanges l3 and I4. The sections II and I 2 are arranged with their respective flanges I3 and 14 in closely adjacent relation, in 'which position the parts are held by spaced rivets i5 and it passed through the flanges. The adjacent longitudinal edges of the sections H and I2 accordingly are in registry and in substantially contacting relationship so as to produce the tubular shell Ill.

As best seen in Fig. 3, the sections II and I 2 making up the shell II] are formed with opposed tapers giving to the shell ID a flared appearance at the opposit ends thereof. Thus, the shell has a constricted neck portion H defining a place or area of minimum diameter. From the area I! the shell flares outwardly in either direction to areas of maximum diameter at the respective outer ends. The constrictedportion or area I! is offset from the center of the shell, being relatively closer to the inner or attachment end of the shell. The taper extending toward the outer end of the shell accordingly is of greater length than the taper extending toward the inner end thereof.

Disposed in concentric spaced relation within the inner end of the shell I is an attachment collar It. The collar l3 comprises mating sections I9. and 2| having respective side flanges 22 and 23, the section being similarl shaped. The sections 13 and 2| are so assembled that the flanges 22 and 23 are in complementary opposed relation. At their outer ends they have a triangular formation and inward of the triangular formation have respective semi-cylindrical extensions 24 and 25.

The attachment collar I8 is arranged in the shell i0 with its respective sections l9 and 2| parallel to the sections 1 l and I2 of the shell. At

the inner end of each collar section I 9 and 2! are oppositely disposed projections 26 and 21 received between the flanges l3 and IA of the shell section H and i2, and clamped therebetween by the rivets l which pass through the projections on the attachment collar as Well as through the flanges l3 and M of the shell. The clamping pressure applied at the inner ends of the' collar sections by the rivets iii tend to separate the sections at their outer ends which project slightly beyond the inner end of the shell Ill.

Aligned openings are-provided in the outer ends of the flanges 22 and 23 through which attachment bolts 28 extend into engagement with screw clips 29 embracing each flange 23. Adjustment of the bolts 28 causes the collar sections I9 and 2| to move toward or away from each other so as to accommodate the collar 18 to various tail pipes which are removably dumped therebetween. The

adjustment of the bolts 28 thereby compresses the collar 18 into tight frictional engagement with the pipe adjacent the end thereof in substantial alignment with the projections 262'l, while the rearmost end of the collar is positively engaged with the tail pipe under influence of the bolts 28.

The semi-cylindrical portions 24 and 25 on the collar sections 19 and 2| cooperate to define a cylindrical extension projecting inwardly within the'shell is through and beyond the constricted necked portion I! thereof. There is thus provided between the cylindrical extension of collar 18 and shell Hi an annular Venturi chamber 3!. tapering from a maximum width at the inner end of the shell to a minimum width at the constricted neck ll.

Upon forward motion of the vehicle, air passing alongside the tail pipe enters the chamber 3| and after passing the restricted neck portion l'lexpands into the larger area of the shell outward of the necked portion, thereby inducing a more rapid and thorough evacuation of gases from the tail pipe under influence of the suction created by the Venturi effect of the extension. It will be understood that the collar 18 is clamped directly on the tail pipe and the exhaust gases are discharged therethrough toward the outer end of the shell Ill.

upon another. Intermediate their ends, the ribs 32 and 33 are formed to an arcuate shape defining in conjunction with one another, an opening 3a. The arcuate portions of the ribs 32 and 33 are formed with opposed tapers whereby the opening 34 assumes the appearance of a Venturi tube. The opposite ends of the ribs 32 and 33 are received between the flanges l3 and 14 of the shell at the location of the rivets 15 which are passed therethrough.

It will be noted that the deflector is a fabricated or assembled device, all the parts of which may be made of sheet metal stampin'gs or the like. The three principal elements thereof, the shell ID, the collar l8, and Venturi tube 34, are of two-part sheet metal construction, all held together by only two sets of rivets l5 and Hi. The attachment collar [8 and its associated parts are substantially concealed within the shell H), which because of its curvature presents a pleasing streamlined appearance. The exterior of the shell may be chrome plated, and as shown the flanges l3 and I4 may be formed with opposed tapers corresponding to the shape of the shell to add to its attractiveness and to insure long wear.

From the above description it will be apparent that there is thus provided a device of the character described possessing the particular features of advantage before enumerated as desirable, but which obviously is susceptible of modification in its form, proportions, detail construction and arrangement of parts without departing from the principle involved or sacrificing any of its advantages.

While in order to comply with the statute the invention has been described in language more or less specific as to structural features, it is to be understood that the invention is not limited to the specific features shown, but that the means and construction herein disclosed comprise but one of several modes of utting the invention into effect.

Having thus described my invention, I claim:

1. An exhaust deflector, including a pair of semi-tubular shell elements flaring in opposite directions from a constricted neck portion intermediate their ends, complementary flanges along the longitudinal edges of said elements, said elements being arranged with said flanges in mating relation to define a tubular shell having an area of minimum diameter intermediate its ends and flaring outward thereof in both directions to areas of maximum diameter at the ends thereof, means holding said flanges in mating relation, an attachment collar adjacent one end of the tubular shell and surounded thereby, said collar comprising two mating semi-cylindrical members the edges of which are out of contact through at least a part of their length, the cylindrical area of said collar extending in spaced concentric relation to said shell through and beyond the area of minimum diameter of said tubular shell, lateral ears on said collar elements adjacent their inner ends received between the flanges of said shell and connected thereto by the means holding said flanges in mated relation, and adjustment means passed transversely through said collar elements at their outer ends for efiecting relative radial adjustment thereof.

2. An exhaust deflector of the type wherein a deflector shell is detachably engageable with an exhaust pipe, comprising an expansible and con tractible attachment member attached to and arranged within one end of the shell and connectable to the exhaust pipe, said attachment member comprising two mating semi-cylindrical Number Name Date members the edges of which are out of contact, 1,813,189 Moore July '7, 1931 each semi-cylindrical member having ears at one 1,930,285 Robinson Oct. 10, 1933 end attached to the shell and clamping means at 2,161,895 Bremler June 13, 1939 the other end for engaging the end of the exhaust 5 2,313,772 Russell Mar. 16, 1943 pipe. 2,376,550 May May 22, 1945 References Cited in the file of this patent N b E I PATENTS t um er oun ry Da e UNITED STATES PATENTS 10 568,140 Great Britain Mar. 20, 1945 Number Name Date 276,044 Holt Apr. 1'7, 1883

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