US 1983866 A
Description (OCR text may contain errors)
g DEC. U., 1934. Y J, MiKULASE-:rq 199836 ATR CLEANER Filed NOV, 50, 1931 Paz/@afan Cil ' an offset lug or projection in which is Patented Dec. 11, 1934l PATENT OFFICE AIR CLEANER John Mikulasek, Newton, Iowa,
Maytag Company, Newton, Iowa,
of Delaware assignor to The a corporation Application' November 30, 1931, Serial No. 577,877
The invention relates to a novel air cleaner construction for a carburetor.
Among the objects of the invention is to provide an air cleaner for a carburetor which is adapted to be readily and easily attached and detached for cleaning or replacement as the occasion may require.
A further object of the invention is the provision of novel coupling or attaching means for attaching the air cleaner to the carburetor, but permitting removal thereof for the purpose of replacement or cleaning. The invention comprehends the provision of an air cleaner constructed to interchange with cleaners now in commercial use and which were standard equipment on the carburetor as originally placed upon the market. In the drawing, the carburetor shown is of a type used in connection with a two-cycle internal combustion engine as disclosed more particularly in my co-pending application Serial No. 395,518, led September 27, 1929, although it is to be understood that the present embodiment may be employed in other constructions or uses wherever an eiiicient air cleaner is desired.
Another object is the provision of a novel means and method of connecting the coupling member to the body of the air cleaner.
A still further object of the invention is to provide the coupling or attaching collar with mounted an adjusting member or screw adapted to detachably connect the air cleaner to the carburetor.
Further objects are to provide a construction of maximum simplicity, efficiency, economy and ease of assembly, replacement, operation and maintenance; and such further objects, advantages and capabilities as will later more fully appear and as are inherently possessed thereby.
The invention further resides in the combination, construction and arrangements of parts illustrated in the accompanying drawing, and
while there is shown therein a preferred embodiment, it is to be understood that the samel -is susceptible of modification and change and comprehends other details and constructions without departing from the spirit of the invention.
In the drawing:
Fig. 1 is a view in front elevation of a carburetor equipped with the improved air cleaner.
Fig. 2 is a view, part in side elevation and part in vertical cross section of the carburetor and air cleaner and disclosing more fully the means for attaching the air cleaner.
Fig. 3 is a view in perspective of the clamp collar or coupling.
Fig. 4 is a fragmentary view, part in side elevation and part in vertical cross section of an alternate form of collar or coupling member.
Fig. 5 is a view in perspective of the collar or -coupling disclosed in Fig. 4.
Fig. 6 is a view similar to Fig. 4 but disclosing a further alternate construction of attaching or clamping means.
Referring more particularly to the disclosure in the drawing, the carburetor 10 is shown as comprising a housing 11 provided with a fuel intake tube 12 and a handle or throttle 13 of a valve for regulating the flow of fuel into the mixing chamber of the carburetor and thence into the crank case of the engine. Adjacent the top' ofthe carburetor housing 11 is an air intake port 14 leading to an air chamber 15. This inlet or intake port is providedwth an annular enlargement 16, the inner periphery of which is slightly chamfered or beveled as at 17.
The air cleaner 18 for attachment to the carburetor comprises a cylindrical body portion 19 of considerably greater cross section than the intake port of the carburetor. At its exterior, this body portion 10 is provided with an outwardly flared flange 20 upon which is clinched a perforatedconvex face plate 21. At the other end of the cylindrical body portion 19 is provided a shoulder 22 adjacent which is seated a perforated false bottom 23, and intermediate the plates 23 and 21 are provided spaced screens 24 and 25 and a mass of filtering material 26 such as moss or the like. The screens 24 and 25 not only act as'lauxiliary filteringA means but retain the mass of ltering material 26 which is housed therebetween. l
The filtering material may consist of moss or any other iibrous material which does not vtend to readily compact and provide too great a resistance to the flow of air therethrough.
The interior or rear portion of the air cleaner is contracted as at 27 and the end thereof is reduced to form a neck 28 adapted to be received within the annular enlargement 16. In order to retain the air cleaner rigidly in position yet permit ready assembly, detachment and replacement thereof, the invention comprehends the provision of a clamp, collar or coupling -member 29 provided with a reduced annular neck 30 and projecting ear or lug 31 having a tapped or threaded opening 32 for the reception of a set screw 33. The neck of the collar 30 is chamfered on its inner edge as at 34.
In assembling the collar 29 upon the neck 28 of the air cleaner, this collar is slipped over the neck and rigidly secured in place by clinchingthe neck 28 thereto and expanding the inner edge into the chamfer 34 of the collar. If desired, the collar 29 and neck 28 of the air cleaner may be secured together byY spot welding.
In Figs. 4 and 5 is disclosed an alternate construction of clamp collar or coupling. In this form the reduced neck 35 of the air cleaner 18 is connected to a clamp collar or coupling 36 by means of spot welding or the like. This collar is not provided with a neck portion as is the collar disclosed in Figs. 1 to 3 inclusive, but it is provided with an ear or lug 37 having a threaded or tapped opening 38 for the reception of a setl or thumb screw 39.
In Fig. 6 is provided a further alternate construction in which the air cleaner 18 is provided with a neck portion 35 similar to that shown in Fig. 4, but instead of a clamp collar or coupling member, the construction comprehends the `provision of a threaded or tapped ear or lug 40 which is mounted o n or connected to the -body of the air cleaner in any suitable manner,
as by means of riveting or the like. As in the previously disclosed constructions this form is provided with a. set or thumb screw 41 which'is adapted to be screwed down upon the casing or housing 1l of the carburetor whereby to prevent ready detachment of the air cleaner. It is to be noted that the set screw is not over the supported portion of the neck of the air v,cleaner but is set rearwardly therefrom or away from thel body of the air cleaner. When the vset screw is tightened, the resulting diagonal force draws the inner connecting parts of the air cleaner and carburetor together whereby to provide a rigid and leak proof connection therebetween.
Although the drawing discloses but one ear and set screw for retaining the air cleaner in position and under normal operating conditions, this is suiiicient, nevertheless any number of ears and set screws may be provided either diametrically opposed or otherwise spaced around the intake port. Y
From the above description and the disclosure in the drawing it will be readily seen that the invention comprehends an eicient air cleaner construction which may be readily assembled, removed and/or replaced as desired The construction permits the ready removal of the air cleaner from time to time as conditions require that the accumulated sediment in the filtering material be removed as by washing or the like.
Having thus disclosed the invention,
1. A coupling device for detachably coupling an air cleaner provided with a constricted neck to a carburetor, comprising a coupling member provided with a portion encompassing the neck and conformably seating within the air inlet of the carburetor; and a part offset from the encompassing portion `and extending exterior of said inletyand an attaching screw in said within the air inlet of the carburetor, an oiset rearwardly extending ear on said collar, and an adjustable set screw in said ear and adapted to engage the body of said carburetor whereby to detachably retain the air cleaner in position on the carburetor but permit its ready removal for the purpose of replacement or cleaning.