US1580268A - Air filter - Google Patents

Description

April 13 192e. 1,580,268.

lA. -F. y'PAJALIG ,AIR FILTER Filed March 2:5.'*1925 UNITED *ST ANTHONY ze'. PAJALIC,

Ior nnraorr, MICHIGAN.

AIB FILTER.

application mea Marien 2a, 1925.. senat No. 17,696.

To all 'whom t may concern.'

Be it known thatI, ANTHONY F. PAJALIG,

a citizen of the United States, residing at Detroit, in thecounty of Wayne and State of Michigan, have invented certain new and usefull Improvements vin yAir "Filters, of which the following is a specification, reference being had ltherein to the accompanying drawings.

This invention relates to an air filter that may be advantageously used at the alr in.-

, take connection of a carburetor forming and imurions' to an engine, by excluding `dust and forelgmmatter, the accumulation of carbon in cylinders and about valves 1sv -reduced to a. minimum; the-:scoring of eylin'- der walls prevented, and'ahigherA degree of efficiency attained in connection with the engine.

A further objecty of this invention 4is lto provide a sheet metal air filter wherein casings and other members 'are arranged to provide a sinuous, tortuous, or staggered path for air, so that those particles heavier than air will be baiiied and caused to leave the device before`entering a carburetor or other engine part.

The above and by hereinafter specifically described and then other objects are attained claimed. Reference will now be had tofthe drawing wherein Figure 1 is a horizontal' filter longitudinal sectional view of theair of the Fig. 2 is a vertioal'sectional view same;

Fig. 3 is a cross sectional view of the air ltr taken on the line III-III of Fig. 1; an

Fig. 4 is asimilar view taken on the line IV--IV of Fig. 1.

To put my invention into practice, I provide an outer casing composed of a front part 1 and a rear part 2, said casing parts eing arranged end4 to end with the confronting edges thereof bell shaped, as at 3,

and spaced apart so as to provide an annular a mechanical construction that will-"Ba,

air inlet opening 4, which also serves as a' dirt outlet. The front part of the casing is bell shaped and'closed, as at 5, and the rear part 2 ofthe casing has a large opening 6, into which extends an air loutlet conduit, or carburetor connection 7, said connection being centered 'in the opening 6 by inwardly projecting brackets 8, forming part of the casing rear part l2. s i

The-casing parts, 1 and 2, are formed With annular walls 9, and lseatedon these walls are the corner portions 10, of a substantially rectangular` inn'cr casing .11, said casing having its front end formedwth flanges 12, that may besoldered riveted, or otherwise 'connected to the front The rear'part cf the inner casing 11 ex tends into the rear part 2 of the outer easing.;v

and 'is formed with a Wall 13 having an opening 11i in which is fixed the inner end of the conduit, or carburetor connection 7 v In the forward end of the innercasing 11 v1s a' concave-convexe balie member'l provided with diametrically opposed arms 16 part 1 of the casing.:

which extend into the side walls ofthe inner caslng 11, and-.support the baffle member y coaXially of the conduit 't'. l

Connected to a Wall of the inner casing 11 is a hood 18 having its front end abutting a ange 12 of the casing and its rear end open. Attached to the hood 18, and comlmunicating therewith is an air outlet conduit 17, which extends between the outer casing parts, 1 and 2, and is adapted to communicate with a breather, (not shown). The hood 18 will revent crank case oil or other v,matter from eing drawn into the carburetor connection 7.

j Air i-mpinges against the front part 1 "0f the outer casing and air enters the annular opening 4 where a portion of the air may pass through the rear part 2 of the outer casin and out of the opening 6, carrying with it any dirt or foreign matter. vOther quantities of air entering the annular opening 4 may pass between the inner casing 11 and the annular wall 9 of the casing :front part 1. From this 'part of the casing the air passes between the baflie member 15 and the walls of the casing 11, and enters the conduit or carburetor connection 7, and 'the breatherconduit 17. When the air impino'es against the baliie member 15, dirt and forelgn matter will be defiected downwardly into the front casing part 1 and out of the opening 4.

From the foregoing,- it` will be noted that the air is filtered as it travels in a tortuous path in the device, and thatthe outer casing parts are supported through the medium of the inner casing mounted on the conduit or carburetor connection. The breather conduit may also cooperate'with the carburetor connection in supporting the device without additional supportingmeans.

It is thought that the utility of myv invention will be apparent without further description, and while in the drawing there is illustrated a preferred embodiment of my invention, itisto be understood that the structural elements are susceptible to such variations as are permissible by: the appended claims.

What I claim is :f Y

l. An air filter of the type described comprising a two-part outer casing having a front closed air detiecting end, an inner casing connecting and maintaining the parts of the outer casing spaced apart, a baiile in said inner casing, and an outlet connection coaxially of said casings' and fitted in a wall of said inner casing.

2. An air filter as callcdfor in claim 1 wherein said two-part outer casing provides a continuous side air intake opening, and said inner 'casing affords marginal openings establishing communication between said casings.

3. An air filter comprising an outer cylindrical casing having a side air inlet opening and a front closed end, an air outlet y member extending into the rear end of said outer casing, an inner rectangular casing having corner portions connected to said outer casing and arear wall connected to said air outlet member, and a baffle in'said rectangular casing and coaxially of said air outlet connection. l

4. An air filter comprising a two-part outer casing closed at its front and having a side openlng for the outlet of dirt and the inlet of air,an inner casing extending from within one part of said casing into the other part thereof land serving as a baffle at the side opening of said outercasing and communicating with a part of said outer casing at the front end ofthe inner casing to admit air to said inner casing, and an air outlet connectionA connected to said inner casing.'

5. An air filter, as called for in claim 4, and a bafiie in said inner casing presenting a, convex face to said air outlet connection.

6. 'An air filter of the type described comprising a two-part outer casing having a front closed end and a side opening adapted to receive air, an inner casing adapted to receive air from the outer casing, an out-- let connection for saidinner casing, a hood on said inner casing communicating with said 'outer casing, and an air outlet conduit connected to said hood and extending between the parts of said casing.

7. An air filter comprising a closed front casing part, an open rear` casing part, said casing parts cooperating in providing a side air inlet opening, an inner casing closed to the 'rear casing part. and open to the front casing part and adapted to receive air therefrom, said rear casing part affording a passage for air therethrough, and a connection with said inner casing producing an induced current of air supply by withdrawal of air from the air passage of the rear casing part.

8. An air filter comprising an outer casing open at its side and rear only, an inner casing and connection cooperating with said outer casing in providing an air passage through said outer casing, said inner casing having its front end alone establishing communication between said outer casing and said connection so that aninducedcurrent in said connection withdraws air from the air passage of said outer casing.

In testimony whereof I afiix my signature.

` ANTHONY F.' PAJALIC.

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