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Publication numberUS1562077 A
Publication typeGrant
Publication dateNov 17, 1925
Filing dateNov 22, 1923
Priority dateNov 22, 1923
Publication numberUS 1562077 A, US 1562077A, US-A-1562077, US1562077 A, US1562077A
InventorsWalter J Bliffert
Original AssigneeWalter J Bliffert
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combined vaporizer and auxiliary air-inlet device
US 1562077 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Nav. 17I 1925.. 1,562,071




Application filed. November 22, 1923.

To all whom t may concern.'

Be it known that I, VAL'TER J. BLrrFnnT, a citizen of the United States, and resident of Milwaukee, in the county. of Milwaukee and State of 'Wisconsim have invented certain new and useful mproven'ientsin Combined Vaporizer and Auxiliary Air-Inlet Devices; and Ido hereby declare that the following is a full, clear, and exact description thereof.

This invention relates to manifold gaskets and is particularly directed to a manifold gasket adapted to be inserted between the intake. manifold and the carburator of an internal combustion engine.v

Objects of this invention are to provide an intake manifoid gasket which will interrupt the flow of the film of condensed fuel along the sides of the intake manifold, which will heat such fuel and mix it with incoming fresh air, thus securing thorough vaporization, which will then direct the vaporized fuel centrally7 of the intake manifold to prevent subsequent condensation, and to provide a manifold gasket which will secure such heating and vaporization of the fiowing film of liquid fuel without injecting any burnt gases into the mixture.

Further objects are to provide a manifold gasket which is constructed in a very simple andpractical manner, which may be quickly applied to a standard type of car,

and which is highly serviceable in operation.

An embodiment of the invention is shown in the accompanying drawings, in which Figure 1 is a view illustrating the gasket in position with reference to the intake ant exhaust manifolds and carburator.

Figure 2 is an enlarged sectional view on the line 2 2 of Figure 1.

Figure 3 is a face view of the gasket partly in section.

Figure a is a View of the conventional type of manifold and butterfly valve illustrating the distribution of fuel with reference'to such parts.

The gasket comprises a flat body portion 1 provided with outwardly projecting ears conforming to the ears 2 and 3 of the carburator and intake manifold 4 and 5, respectively. These ears are apertured, as indicated at 6, to receive the clamping bolts, as shown in Figure 2. This gasket isl provided with a central aperture 7 which is of less extent than the corresponding apertures Serial No. 676,369.

of the intake manifold and the adjacent portion of the carburator, as shown in Figurev2. The interior surface of the aperture is beveled, as clearly shown in Figure A,2, and it will be noted that the aperture is not exactly centrally located with reference to the intake manifold but the marginal walls project, asA indicated at S, a greater distance on one side of the bore of the intake manifold than the portion 9 on the other side thereof. It is to be noted that the lesser projection 9 is located adjacent the trailing portion 10 of the butterfly valve and that the greater project,- `ing portion 8 is located on the same side as the leading portion 11 of such butterfly 7U valve for a purpose hereinafter to appear.

This gasket is provided with an upper and a lower opening throughwhich projects a pipe 12 which is provided with a,uniform bore or opening 13 throughout the major portion of its length and with a c'onstricted upper outlet 14, as shown in Figure 3. The lower end of the pipe 12 projects beyond the bottom of the gasket and is attached to a fiexible tube 15. The upper end of this tube opens into the exhaust manifold 16, as shown in Figure 1, and thus supplies heated gas to the pipe 12.

It is to be noted from reference to Figure 2 that the pipe 12 is provided with a fiatv forward face 17 and that itsl rear face is curved.

It is thought that the operation of the apparatus will be more clearly understood from a reference to Figure 4 which illustrates the action of the conventional type of butterfty valve and intake manifold 5. This butterfly valve, it will be noted, is shown as occupying the same position as that Vin Figure 2 with its trailing edge 10 and its lead edge 11 in close proximity to the walls of the delivery portion 18 of the carburator. Ithas been found, and it is apparent from an inspection of Figure 4f that the greater quantity of the mixtureflows past the trailing portion 10 of the valve and that a lesser portion thereof passes by the leading portion 11. Experiments indicate that approximately three quarters of the mixture passes the trailing portion of the valve and about `one quarter passes the leading portion thereof. For this reason, therefore, a lesser obstruction is provided by theprojecting part 9 of the gasket adjacent the side having the greater flow of the mixture than is offered '110 by the greater project-ionS which' encounters the lesser volume of flowing mixture. In addition to this, the gasket is provided with a fresh air inlet or duct 19 (see Figures 2 and 3) which opens through the portion 9 and provides additional air for vaporizing the liquid portions of the mixture. It will be seen from Figure 2 that the mixture together with the film of liquid fuel is violently projected inwardly into contact with the heated pipe 12 and is also mixed with the incoming fresh air through the chiot 19. This vaporized fuel is thus heated and intimately mixed with a stream of fresh air and occupies substantially7 the central portion of the intake manifold 5, as illustrated in Figure 2, thus avoiding further contact with the walls of the manifold and preventing further condensation.

It is to be noted from reference to Figures 2 and 3 ofthe drawing` that the inlet duct 19 for the fresh air opens into the aperture through the gasket at a point spaced rearwardly of the forward shoulder or constricted portion of the gasket. This insures an inward flow of`air through the duct as the pressure rearwardly of the shoulder is less than the pressure forwardly thereof due to the particular conical shape of the bore of the gasket. y l l This guiding of the thoroughly vaporized moisture away from the walls of the manifold, obviously will persist for a considerable distance into the intake manifold 5. It is to be noted, however, that as the upper portion of the manifold is approached and distribution to the various cylinders begins that the mixture then is within a heated portion of the intake manifold.

It is further to be noted that the heated gases discharged through the outlet 14rof the heated pipe 12 are swept backwardly across the carburetor and thus keep the ca rburetor warm and aid in its operation. This is particularly desirable in cool weather and insures an effective operation of the carburetor.

It is to be understood that although a separate and distinct` pipe has been shown in Figure 3 that the member 12 may be formed integrally with the body portion`1 of the f gasket and that the term pipe is used in this specification and in the claim shall include this construction also.

Y It will thus be seen that a manifold gasket has been provided which will interrupt the .film of liquid fuel adhering to the walls of Ving any of the products of combustion into the inwardly flowing stream of mixed aiil and fuel thus securing maximum efficiency. lt will also be seen that the gasket can be very readily made and can be as readily installed with a minimum of change in the standard equipment of an automobile.y

Although the invention has been described in considerable detail, it is to be understood that the invention may be variously embodied, and is, therefore, to be limited only as claimed.

I claim: p The'combination of a carburetor and an intake manifold of an internal combustion engine, an exhaust manifold, and a gasket attached between said. intake manifold and said carburetor, said gasket having a shoul* dered portion on the side adjacent the carburetor slightly constricting the continuous aperture through the intake manifold, the opening through said gasket being conical and gradually flaring towards the intake manifold to the size of the intake manifold, al heating pipe supplied Afrom the exhaust manifold and extending transversely across i the opening through said gasket, said gasket having an air inlet duct opening tangentially into the aperture through said gasket I at a point spaced rearwardly from said shoulder.

ln testimony that T claim the foregoing I have hereunto set my hand at lli/lilwaukee` in the county of Milwaukee and State of iVisconsin.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3768789 *Apr 2, 1970Oct 30, 1973P AugustAccessory for carburetors for engines
US4153029 *Nov 10, 1977May 8, 1979Toyota Jidosha Kogyo Kabushiki KaishaHeat insulator for a carburetor
DE1576440B1 *Jan 9, 1967Feb 25, 1971Atox Trust RegEinrichtung zum weiteren Aufbereiten von Brennstoff-Luft-Gemisch
U.S. Classification48/189.2
International ClassificationF02M21/00
Cooperative ClassificationF02M21/00, F02M2700/1305
European ClassificationF02M21/00