US2498190A - Mixing device - Google Patents

Description

Feb. 21, 1950 1... M. WEEKS MIXING DEVICE Filed April 50, 1948 Inventor 150mm M. WEE/"(.5

Patented Feb. 21, 1950 UNITED STATES PATENT OFFICE MIXING DEVICE Leonard M. Weeks, Milwaukee, Wis. Application April 30, 1948, Serial No. 24,361

4 Claims.

The present invention relates to mixing devices and it consists in the combinations, constructions and arrangements of parts herein described and claimed.

It is an object of the present invention to provide a mixing device which may be incorporated in an internal combustion engine to ensure more nearly perfect carburation.

Another object of the invention is the provision of a mixing device having no moving parts and which will cause a whirling of the gas and air mixture passing therethrough in a novel and eificient manner.

Another object of the invention is the provision of a mixing device having automatic means for whirling a gaseous mixture in one direction and means for reversing such whirling motion with a correspondingly greater admixture of the contents of the matter passing through the device.

Another object of the invention is the pro- I vision of a device of the character set forth which is simple and inexpensive in its construction and economical and efiicient in use.

Other and further objects of the invention will become apparent from a reading of the following specification taken in conjunction with the drawing, in which:

Figure 1 is an elevational view, partly in section, of an embodiment of the invention in use with an internal combustion engine,

Figure 2 is a vertical sectional view taken along line 2-2 of Figure 4,

Figure 3 is a sectional view taken along line 33 of Figure 2,

Figure 4 is a perspective view of the device forming the invention, and

Figure 5 is a top plan view of the device.

Generally there is provided a mixer for internal combustion engines comprising a substantially cylindrical perforated insert having a flange at one end for fastening the same in position in an intake pipe. The body is cut away upon one side and a series of spiralled fins provided along the bottom and a further series of oppositely spiralled fins provided along the bottom edge of the cut away portion of the device. The fins extends only part way toward the center of the device thereby leaving an uninterrupted passage through the center thereof.

Referring more particularly to the drawing, there is shown therein a mixing device for internal combustion engines comprising a single piece of perforated material, preferably brass or the like and formed into a substantially open ended cylinder l0 having an annular flange H.

One half of the lower part of the cylinder I0 is cut away and a series of inwardly extending spiral fins 12 formed on the resulting lower edge thereof. The lower end of the remaining one half is formed with a, series of inwardly extending spiralled fins l 3 which are oppositely spiralled to the fins 12. A central passage 14 is left unimpaired.

The mixer is snugly mounted in an intake pipe l5 leading to an intake manifold Hi. The pipe I5 is provided with a flange I! which is joined with a flange [8 of a, pipe l9 by means of bolts 20. The flange H of the mixer device is held between the flanges l1 and I8.

In operation, it will be apparent that a mixture of gas and liquid fuel is fed from a carburetor (not shown) through a jet 2] which directs its force against a butterfly valve 22 which, in turn, will cause the fiow of mixture to be first directed against the fins I 2. The fins l2 mixture to assume a whirling motion and at the same time direct a goodly portion of the mixture to the fins #3 which, being oppositely spiralled, will further admix the gasoline particles with the air in the mixture coming from the carburetor. The now fully carburated mixture will pass into the intake manifold I6 and be fed to the various cylinders of the engine in conventional manner. The central passage I4 is provided so as not to impede the flow of mixture from the carburetor to the intake manifold. It will be understood that by providing a more nearly complete mixture of gas and air to the cylinder that there is less possibility of liquid gasoline droplets forming upon the sides of cylinders to thereby impair the efficiency of the engine and to add carbon deposits thereon;

While but one form of the invention has been shown and described herein, it will be readily apparent to those skilled in the art that many minor modifications may be made without departing from the spirit of the invention or the scope of the appended claims.

What is claimed is:

1. A device of the character described comprising a hollow cylindrical body having one half of one end cut away and formed with a plurality of spiral fins and having the remaining lower end formed with a plurality of oppositely spiralled fins.

2. A device of the character described comprising a hollow perforated cylindrical body having one half of one end cut away and formed with a plurality of spiral fins and having the rewill cause the.

maining lower end formed with a plurality of oppositely spiralled fins.

3. A device of the character described comprising a hollow cylindrical body, an outwardly extending flange at one end, a series of spiral fins extending half way around the other end, an extended portion of the body opposite said fins and a second series of oppositely spiralled fins formed in said extended portion.

4. A device of the character described comprising a hollow perforated cylindrical body, an outwardly extending flange at one end, a series other end, an extended portion of the body opof spiral fins extending half way around the posite said fins and a second series of oppo- 15 4 sitely spiralled fins formed in said extended portion.

LEONARD M. WEEKS.

REFERENCES orrEn The following references are of record in the file of this patent:

UNITED STATES PATENTS 10 Number Name Date 1,396,054 Potter Nov. 8, 1921 1,584,046 Smith May 11, 1926 1,778,790 Brandl et a1 Oct. 21, 1930 2,028,937 Lefebre Jan. 28, 1936

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