SPIT-BACK FOR CARBURATORS
United States Patent 3852377
The present invention relates to carburators, and more particularly to a spit-back device which may be readily secured to a carburator of standard manufacture. The device in question will facilitate the mixing of the incoming air with the fuel, and also will prevent the spilling over or the release of fumes to prevent explosions. The device operates on the principle of turbulence and the elimination of waste products.
US Patent References:
Carburetor
Kalert, Jr. - January 1966 - 3231249
AIR CLEANER
Maddocks - January 1973 - 3710560
Carburetor
Kalert, Jr. - January 1966 - 3231249
AIR CLEANER
Maddocks - January 1973 - 3710560
Inventors:
Heintzelman, Leo (Wyoming, MI)
Roy, Albert G. (Greenville, MI)
Roy, Albert G. (Greenville, MI)
Application Number:
05/264202
Publication Date:
12/03/1974
Filing Date:
06/19/1972
View Patent Images:
Export Citation:
Primary Class:
Other Classes:
123/73R, 123/198D, 55/DIG.028, 96/408
International Classes:
F02M17/30; F02M17/00; F02M17/30
Field of Search:
261/79,1,DIG.6 123/73R,142 55/218,240,241,DIG.28
Primary Examiner:
Lutter, Frank W.
Assistant Examiner:
Cuchlinski Jr., William
Claims:
Having described our invention, we claim the following
1. A spit-back device for a carburator having an air intake opening, said spit-back device comprising:
2. A spit-back device as claimed in claim 1 wherein the baffle means comprise:
3. A spit-back device as claimed in claim 2 wherein:
4. A spit-back device as claimed in claim 3 wherein the baffle plates are flat and each baffle plate extends about half way across the mixing chamber, the baffle plates being spaced apart longitudinally in the mixing chamber a sufficient distance to cause the air passing through the mixing chamber to follow a generally S-shaped path in passing by the baffle plates.
5. A spit-back device as claimed in claim 4 wherein the mixing chamber is cylindrical.
6. A spit-back device as claimed in claim 5 wherein the mixing chamber is conical, with the narrower end being the outlet means.
7. A spit-back device as claimed in claim 2 and further comprising perforated cover means over the inlet means of the mixing chamber, said cover means being adapted to permit air to pass through said cover means into the mixing chamber.
8. A spit-back device as claimed in claim 1 and further comprising drain means in the side of the spit-back device for conveying fuel and residue trapped by the baffle plates out of the spit-back device.
9. A spit-back device as claimed in claim 8 and further comprising air vent means in the top side of the spit-back device for releasing fumes from the spit-back device.
10. A spit-back device as claimed in claim 1 and further comprising shield means positioned in the spit-back device between the carburator intake opening and the baffle means, said shield means being adapted to deflect fuel that is spit back through the carburator air intake opening before it reaches the baffle means.
11. A spit-back device as claimed in claim 1 wherein the outer housing and mixing chamber comprise concentric tubular members.
1. A spit-back device for a carburator having an air intake opening, said spit-back device comprising:
2. A spit-back device as claimed in claim 1 wherein the baffle means comprise:
3. A spit-back device as claimed in claim 2 wherein:
4. A spit-back device as claimed in claim 3 wherein the baffle plates are flat and each baffle plate extends about half way across the mixing chamber, the baffle plates being spaced apart longitudinally in the mixing chamber a sufficient distance to cause the air passing through the mixing chamber to follow a generally S-shaped path in passing by the baffle plates.
5. A spit-back device as claimed in claim 4 wherein the mixing chamber is cylindrical.
6. A spit-back device as claimed in claim 5 wherein the mixing chamber is conical, with the narrower end being the outlet means.
7. A spit-back device as claimed in claim 2 and further comprising perforated cover means over the inlet means of the mixing chamber, said cover means being adapted to permit air to pass through said cover means into the mixing chamber.
8. A spit-back device as claimed in claim 1 and further comprising drain means in the side of the spit-back device for conveying fuel and residue trapped by the baffle plates out of the spit-back device.
9. A spit-back device as claimed in claim 8 and further comprising air vent means in the top side of the spit-back device for releasing fumes from the spit-back device.
10. A spit-back device as claimed in claim 1 and further comprising shield means positioned in the spit-back device between the carburator intake opening and the baffle means, said shield means being adapted to deflect fuel that is spit back through the carburator air intake opening before it reaches the baffle means.
11. A spit-back device as claimed in claim 1 wherein the outer housing and mixing chamber comprise concentric tubular members.
Description:
This invention relates to automotive equipment, and more particularly it relates to carburators for internal combustion engines, and in the main it provides a spit-back device for combustion engines. The invention is an improvement over the prior art and it operates on the principle of turbulence. As the air passes at high speed through the device it hits a number of baffle plates (in this case two) which are mounted in a cylindrical housing. The baffle plates are secured with one on either side of an entry channel or openings (a tube) and anchored in the cylinder. The baffle plates in the cylinder are mounted in tandem one above the other and are so positioned in the incoming air as to cause the air to circulate and to cause turbulence inside the periphery of the walls of the cylindrical housing. The invention also provides an air vent which may be located on the top of the housing and may help to release fumes produced as the result of the mixing and the circulation of air and gas. Such a vent will help release the fumes to the atmosphere and help prevent accidental ignition of the gas and explosions.
While the above is the main improvement of our invention over the prior art, in addition, we are providing a discharge means so as to permit all wasted fuel to pass and to be discharged to the atmosphere. This means is arranged in such a manner as to prevent the waste from being ejected out from the device, and into the face or the clothing of a person standing nearby usually the operator. This is a very important improvement not heretofor claimed in the prior art.
Relative to the detailed construction of our device, we are providing a vent tube which may be attached to a vent hole permitting safe passage of the waste from the spit-back. Furthermore, there is a cylinder with two baffle plates; one baffle plate above the other in tandem. One baffle plate near the top of the cylinder and another located below in the cylinder wall. The position of the baffle plates in the cylinder will cause air turbulance. However, instead of the cylinder one may utilize also a cone type housing with the baffle plates properly located in the cone one above the other one should be able to get as good a distribution of the air gas mixture as with the cylindrical housing. The cone housing may be used for special conditions.
There is a cover with holes to permit and to allow air to pass through the vent in the lower part of the cylinder housing into the carburator. The cylindrical housing may be round and elongated or round and cone-shaped. Inside the housing the baffle plates are mounted one above the other substantialy as to be shown and described later. Furthermore, we are providing a special shield in the cylinder wall to prevent the spray of fuel from being ejected outside to endanger the operator. The shield may be mounted in the device in such a manner as to remain in the path of the fuel, with the fuel hitting first the shield before it is ejected onto the baffle plates. However, it must be realized that we do not wish to limit ourselves to this design alone. We can visualize the shield being build within the cylinder wall, or on the outside of it. The shield may work either way, and can be just as practical and efficient.
The shield may be build in such a manner as to easily slide in and out into the cylinder (or cone) and lock in place to prevent it from accidentaly falling out. However, it is clear that the device can as well operate without the shield. The shield provides added safety.
The operation of our device is simplicity itself. When the carburator "coughs" or "spits" back fumes, gas or oil, the residue will be trapped in the back side of the baffles. Afterwards this residue is sucked or pulled back into the carburator to be drained through an outlet hole or opening provided for this purpose in the bottom of the spit-back. The above described action also prevents pollution of the air by fumes, and dirtying and messing up of the machine and the operator, because it traps all the oil and the gas which internal combustion engines throw off by coughing through the carburator.
Accordingly, one object of the present invention is to provide means to prevent oil and gas in a spit-back from leaving the carburator.
Another object of the present invention is to provide a spit-back with a cylindrical housing, a number of baffle plates in the cylinder with the air and fuel passing through the cylinder creating a mixture and a mixing action to improve the final product of oil and air.
An additional object of this invention is to provide a baffle plate and means for mounting said plate in the device to prevent spit-back when the device coughs or spits fumes, gas or oil.
This invention also contains certain other features of construction and the combination and arrangement of several parts to be hereinafter fully described, illustrated in the accompanying drawings, and in the specifications, and specifically pointed out in the appended claims.
In describing the invention in detail, references will be had to the accompanying drawings where like character numerals denote like or corresponding parts throughout the several views in which:
FIG. 1 is a perspective view showing the spit-back device assembled to a carburator of standard make, personifying the embodiment of the present invention;
FIG. 2 is a partial cross-section or cut-away view through the spit-back illustrated in FIG. 1;
FIG. 3 is a perspective view in section showing details of the spit-back device and disclosing the position of the baffle plates;
FIG. 4 is a perspective view showing the spit-back with the baffles and the shield in the proper position within the cylinder;
FIG. 5 is a perspective view of the cylinder with its baffle plates disclosing the vent hole to prevent the cylinder from accidentaly exploding;
FIG. 6 is a perspective view of the carburator of standard make in its relationship to the spit back device shown in FIG. 5;
FIG. 7 is a modification showing the application of baffle plates in a cone-shaped spit-back cylinder;
FIG. 8 is a perspective view of the cone type spit-back cylinder showing the position of the baffle plates and the vent hole;
FIG. 9 is a view showing the shield mounted in the cylinder; and
FIG. 10 is a perspective view of the cover which keeps the cylinder in assembly and encloses the baffle plates.
DESCRIPTION
More particularly to the device embodying the present invention, and referring to FIG. 1, it shows the manner in which the spit-back device 20, by means of a flat circular cover, and its mounting screws 22, 23 and 24, inclusive, may be securely held to the standard type carburator housing or casting 25. It can be seen that the spit-back may be provided with an air vent pipe or connection 26, and an exhaust or drain pipe 27, substantially as indicated.
FIG. 2 shows the spit-back device (in upright position) and in section to disclose pertinent details. It can be discerned that the spit-back device comprises a cylindrical outer housing 20a and an inner cylindrical housing 28 which in the upper end thereof has the cover 29, with a number of air intake openings 30 to permit air to enter into the spit-back device. Furthermore, the inside of the cylinder 28 (which is hollow) can be provided with a number of baffle plates, in this case two, 31 and 32, inclusive, which are arranged in such a manner, one above the other, as to be positioned in the path of the incoming air to help create a turbulence and to assure that the air and the incoming fuel is properly mixed before they are delivered to the engine. In FIG. 2, it can be seen that the device 20 can be secured upon the carburator casting 25, with the latter provided with an air entry section 33. Within the section 33 there is provided a hingeable baffle valve 34 which by means of the operating shaft 35 and the arm 36 can be hinged to close and to open the air suction opening 33, by the will of the operator.
FIG. 3 substantially is the same as FIG. 2, however, in perspective view, showing all the details in the spit-back device. It can be discerned that the baffle plates 31 and 32 are mounted one above the other within the cylinder 28. Also it clearly shows the position of the carburator valve 34 in the carburator casting 25, the operating shaft 35, and the operating handle 36.
FIG. 4 is similar to the perspective view in FIG. 3, however, it further indicates the position of the shield 37 which prevents the pitting of fuel and gas from the spit-back above described. Perspective FIG. 5 clearly shows the relative positions of the baffle plates 31 and 32, and their relationship in the cylinder 28 and the cylinder 20a. Also it clearly shows the position of the drain pipe 27.
Perspective view in FIG. 6 indicates the relative position of the carburator baffle plate 34 (or valve) within the carburator casting 25. Also the position of the shaft 35 and the handle 36 for operating the carburator valve.
FIGS. 7 and 8 show the use of a cone-shaped tube 38 as an inner mixing chamber, with the narrow end of the tube being mounted against the carburator. Cone 38 includes baffle plates 31a and 32a, as employed in cylindrical chamber 28. A drain hole 27a is also shown in FIG. 8. This drain hole is positioned so that it is in the bottom side of the tube when it is laterally mounted on a carburator, as shown in FIG. 1. A corresponding hole 26a for air vent 26 is formed in the top of the cone. Openings 26a and 27a also are formed in a similar position on the cylinder 28.
FIG. 9 shows the manner in which the top plate or the shield 37 can be mounted within the cylinder or the mixing chamber 28, during assembly. The shield 37 has a pair of extensions or lugs 37a which are mounted in a hole or an opening (see FIG. 4) in the cylinder housing to hold the shield permanently in place and to prevent its disengagement. FIG. 10 indicates the shape of the circular cover 21 which by means of three (or more) holes or openings 21a may be fastened to the device by means of screws.
The operation of the device is very simple. When the carburator "coughs" or "spits" back fumes, gas and oil, the residue will be trapped in the rear side of the baffles and be drained later through an outlet hole or a drain pipe which is provided in the bottom of the spit-back device. The above described action also prevents air pollution and prevents spitting of oil and gas and endangering the safety of the operator.
A careful examination of the foregoing description in conjunction with the invention as illustrated in the drawings, will enable the reader to obtain a clear understanding and impression of the alleged features of merit and novelty, sufficient to clarify the construction of the invention as hereinafter claimed. Minor changes in shape, size and materials, and rearrangement of parts may be resorted to in actual practice, as long as no deperture is made from the invention claimed.
While the above is the main improvement of our invention over the prior art, in addition, we are providing a discharge means so as to permit all wasted fuel to pass and to be discharged to the atmosphere. This means is arranged in such a manner as to prevent the waste from being ejected out from the device, and into the face or the clothing of a person standing nearby usually the operator. This is a very important improvement not heretofor claimed in the prior art.
Relative to the detailed construction of our device, we are providing a vent tube which may be attached to a vent hole permitting safe passage of the waste from the spit-back. Furthermore, there is a cylinder with two baffle plates; one baffle plate above the other in tandem. One baffle plate near the top of the cylinder and another located below in the cylinder wall. The position of the baffle plates in the cylinder will cause air turbulance. However, instead of the cylinder one may utilize also a cone type housing with the baffle plates properly located in the cone one above the other one should be able to get as good a distribution of the air gas mixture as with the cylindrical housing. The cone housing may be used for special conditions.
There is a cover with holes to permit and to allow air to pass through the vent in the lower part of the cylinder housing into the carburator. The cylindrical housing may be round and elongated or round and cone-shaped. Inside the housing the baffle plates are mounted one above the other substantialy as to be shown and described later. Furthermore, we are providing a special shield in the cylinder wall to prevent the spray of fuel from being ejected outside to endanger the operator. The shield may be mounted in the device in such a manner as to remain in the path of the fuel, with the fuel hitting first the shield before it is ejected onto the baffle plates. However, it must be realized that we do not wish to limit ourselves to this design alone. We can visualize the shield being build within the cylinder wall, or on the outside of it. The shield may work either way, and can be just as practical and efficient.
The shield may be build in such a manner as to easily slide in and out into the cylinder (or cone) and lock in place to prevent it from accidentaly falling out. However, it is clear that the device can as well operate without the shield. The shield provides added safety.
The operation of our device is simplicity itself. When the carburator "coughs" or "spits" back fumes, gas or oil, the residue will be trapped in the back side of the baffles. Afterwards this residue is sucked or pulled back into the carburator to be drained through an outlet hole or opening provided for this purpose in the bottom of the spit-back. The above described action also prevents pollution of the air by fumes, and dirtying and messing up of the machine and the operator, because it traps all the oil and the gas which internal combustion engines throw off by coughing through the carburator.
Accordingly, one object of the present invention is to provide means to prevent oil and gas in a spit-back from leaving the carburator.
Another object of the present invention is to provide a spit-back with a cylindrical housing, a number of baffle plates in the cylinder with the air and fuel passing through the cylinder creating a mixture and a mixing action to improve the final product of oil and air.
An additional object of this invention is to provide a baffle plate and means for mounting said plate in the device to prevent spit-back when the device coughs or spits fumes, gas or oil.
This invention also contains certain other features of construction and the combination and arrangement of several parts to be hereinafter fully described, illustrated in the accompanying drawings, and in the specifications, and specifically pointed out in the appended claims.
In describing the invention in detail, references will be had to the accompanying drawings where like character numerals denote like or corresponding parts throughout the several views in which:
FIG. 1 is a perspective view showing the spit-back device assembled to a carburator of standard make, personifying the embodiment of the present invention;
FIG. 2 is a partial cross-section or cut-away view through the spit-back illustrated in FIG. 1;
FIG. 3 is a perspective view in section showing details of the spit-back device and disclosing the position of the baffle plates;
FIG. 4 is a perspective view showing the spit-back with the baffles and the shield in the proper position within the cylinder;
FIG. 5 is a perspective view of the cylinder with its baffle plates disclosing the vent hole to prevent the cylinder from accidentaly exploding;
FIG. 6 is a perspective view of the carburator of standard make in its relationship to the spit back device shown in FIG. 5;
FIG. 7 is a modification showing the application of baffle plates in a cone-shaped spit-back cylinder;
FIG. 8 is a perspective view of the cone type spit-back cylinder showing the position of the baffle plates and the vent hole;
FIG. 9 is a view showing the shield mounted in the cylinder; and
FIG. 10 is a perspective view of the cover which keeps the cylinder in assembly and encloses the baffle plates.
DESCRIPTION
More particularly to the device embodying the present invention, and referring to FIG. 1, it shows the manner in which the spit-back device 20, by means of a flat circular cover, and its mounting screws 22, 23 and 24, inclusive, may be securely held to the standard type carburator housing or casting 25. It can be seen that the spit-back may be provided with an air vent pipe or connection 26, and an exhaust or drain pipe 27, substantially as indicated.
FIG. 2 shows the spit-back device (in upright position) and in section to disclose pertinent details. It can be discerned that the spit-back device comprises a cylindrical outer housing 20a and an inner cylindrical housing 28 which in the upper end thereof has the cover 29, with a number of air intake openings 30 to permit air to enter into the spit-back device. Furthermore, the inside of the cylinder 28 (which is hollow) can be provided with a number of baffle plates, in this case two, 31 and 32, inclusive, which are arranged in such a manner, one above the other, as to be positioned in the path of the incoming air to help create a turbulence and to assure that the air and the incoming fuel is properly mixed before they are delivered to the engine. In FIG. 2, it can be seen that the device 20 can be secured upon the carburator casting 25, with the latter provided with an air entry section 33. Within the section 33 there is provided a hingeable baffle valve 34 which by means of the operating shaft 35 and the arm 36 can be hinged to close and to open the air suction opening 33, by the will of the operator.
FIG. 3 substantially is the same as FIG. 2, however, in perspective view, showing all the details in the spit-back device. It can be discerned that the baffle plates 31 and 32 are mounted one above the other within the cylinder 28. Also it clearly shows the position of the carburator valve 34 in the carburator casting 25, the operating shaft 35, and the operating handle 36.
FIG. 4 is similar to the perspective view in FIG. 3, however, it further indicates the position of the shield 37 which prevents the pitting of fuel and gas from the spit-back above described. Perspective FIG. 5 clearly shows the relative positions of the baffle plates 31 and 32, and their relationship in the cylinder 28 and the cylinder 20a. Also it clearly shows the position of the drain pipe 27.
Perspective view in FIG. 6 indicates the relative position of the carburator baffle plate 34 (or valve) within the carburator casting 25. Also the position of the shaft 35 and the handle 36 for operating the carburator valve.
FIGS. 7 and 8 show the use of a cone-shaped tube 38 as an inner mixing chamber, with the narrow end of the tube being mounted against the carburator. Cone 38 includes baffle plates 31a and 32a, as employed in cylindrical chamber 28. A drain hole 27a is also shown in FIG. 8. This drain hole is positioned so that it is in the bottom side of the tube when it is laterally mounted on a carburator, as shown in FIG. 1. A corresponding hole 26a for air vent 26 is formed in the top of the cone. Openings 26a and 27a also are formed in a similar position on the cylinder 28.
FIG. 9 shows the manner in which the top plate or the shield 37 can be mounted within the cylinder or the mixing chamber 28, during assembly. The shield 37 has a pair of extensions or lugs 37a which are mounted in a hole or an opening (see FIG. 4) in the cylinder housing to hold the shield permanently in place and to prevent its disengagement. FIG. 10 indicates the shape of the circular cover 21 which by means of three (or more) holes or openings 21a may be fastened to the device by means of screws.
The operation of the device is very simple. When the carburator "coughs" or "spits" back fumes, gas and oil, the residue will be trapped in the rear side of the baffles and be drained later through an outlet hole or a drain pipe which is provided in the bottom of the spit-back device. The above described action also prevents air pollution and prevents spitting of oil and gas and endangering the safety of the operator.
A careful examination of the foregoing description in conjunction with the invention as illustrated in the drawings, will enable the reader to obtain a clear understanding and impression of the alleged features of merit and novelty, sufficient to clarify the construction of the invention as hereinafter claimed. Minor changes in shape, size and materials, and rearrangement of parts may be resorted to in actual practice, as long as no deperture is made from the invention claimed.