US1989868A - Vacuum cleaner - Google Patents

Description

Feb. 5, 1935. KEssLER VACUUM CLEANER Filed April 1e, 1932 3 Sheets-Sheet 1 Feb. 5, 1935.

H. KEssLER VACUUM CLEANER Filed April 16, 1932 3 Sheets-Sheet 2 Feb. 5, 1935.

H. KEssLER 1,989,868

VACUUM CLEANER 3 Sheets-Sheet 3 Filed April 16, 1952 Mfg/M7099 t l Patented Feb. 5, 1935 -UNITI-ip STATES PATENT OFFICE 8 Claims.

This invention relates to improvements in vacuum cleaners.

One of the features of the invention is to dispense with the usual type of dust collecting bag generally used in connection with vacuum cleaners by providing a cylindrical dust collector and utilizing the cylinder as a handle for the device.

I Another feature of .the invention is to provide a vacuum cleaner having a high eiciency for filtering and trapping dust and dirt drawn thereinto to avoid the objection of fine particles of dust escaping from the device and settling upon the furniture of a room when cleaning the same by use of a vacuum cleaner. l

A further object of the invention is the provision of a vacuum cleaner which includes a removable itering bag into which dust and dirt is drawn and trapped, and which is convenient and sanitary to empty, dispose of or replace Without danger of spilling the accumulated dust and dirt.

A still further object is to provide a vacuum cleaner which is simple of construction, light in weight, easy to disassemble and assemble when 25 in use, strong and durable for the uses intended,

and inexpensive of manufacture.'

With these and other objects in view, the invention resides in the certain novel construc- A tion, combination and arrangement of parts, the essential features of which are hereinafter fully described, are particularly pointed out in the appended claims, and are illustrated in the accompanying drawings, in which:

Figure 1 is a side elevational view of my improved vacuum cleaner.

Figure 2 is an enlarged longitudinal sectional view of the same.

Figure 3 is a horizontal sectional View on the line 3 3 of Figure 2.

Figure 4 isa detail vertical sectional view through the filtering bag associated with its supporting tube.

Figure 5 is a detail fragmentary perspective view of the lower end of the air exhaustA tube.

Figure 6 is an enlarged fragmentary vertical longitudinal sectional view through the air exhaust tube and its telescoping filter bag tube support.

Figure 7 is an enlarged fragmentary vertical sectional view through the filter bag, per se.

Figure 8 is a detail perspective view showing the manner in which the filter bag is removed or inserted upon its supporting tube.

Figure 9 is' a detail vertical sectional view through the cylinder cap showing the manner in which a deodorizer may be supported therein.

Figure 10 is a detail sectional View of a modifled form of cap and deodorizer.'

Figure 11 is a detail perspective View of the cap shown in Figure 10,

lFigure 12 is a. sectional elevational view of a further modification of air exhaust and deo- Y which my combination dust receiver andhandle 15 is ilxedly connected, the details of which will now be fully explained.

Thedust receiver 15 includes a rigid cylindrical 'or other desiredshaped casing 16 made of metal or other like material, which is substantially the same diameter throughout its length and open at opposite ends. Fixed to the lower end of thecylindrical casing 16 is anend cap 17 formed with an annular collar ornipple 18. Fixed within thecollar 18 and rising centrally within thecylindrical casing 16 is anair exhaust tube 19, the same terminating short of the upper or outer open end of the casing. The lower end of theexhaust tube 19 is provided with anannular shoulder 20,` the upper face of which is formed with an inwardlybeveled seat 21, while fixed to thetube 19 below the shoulder orflange 20 arespring catches 22 which extend upwardly beyond the shoulder and terminate in angular lips 23 for a purpose to be presently explained.

Also extending into the nipple orcollar 18 is one end of a rightangle elbow pipe 24, the other end of the pipe having one end of aflexible hose 25 secured thereto by means of ahose clamp 26. Thehose 25 is of such construction as to avoid knking in order to maintain a, uniform internal diameter at all times, and has its opposite end fixedly attached to theexhaust nipple 13 by ahose clamp 27. A collar 28 encircles thenipple 18 to which theyoke 14 is connected, while atubular skirt 29 encloses a portion of theelbow pipe 24 and the nipple end of theend cap 17.

Removably tting upon the outer or top end of thecylindrical casing 16 is acap 30 provided with acircumferential bead 31 which is engaged byreleasable clamps 32 whereby the cap may be securely fastened in position, or by releasing the clamp, the said cap may be removed for facilitating access to the interior of thecylindrical casing 16. The top of the cap is curved inwardly and upwardly, terminating in a collar 33 which telescopes the reduced end of ahand grip 34. Fitting about the collar 33 is thecollar 35 of adeector member 36 which is mounted in spaced relation with thetop wall of thecap 30. Suitable fastening means 37 passes through thereducedl 35 for securing these parts in fixed relation.

The top wall of theouter end cap 30 is provided with a series ofair exhaust openings 38 through which air from within thecyinder 16 is exhausted to the atmosphere. The combined area of air exhaust openings is equal to or greater than the area of the opening in thenipple 13.

Telescoping theair exhaust tube 19 is a filter bag supporting or holdingtube 39, the upper end of which is slightly tapered and terminates in an inwardly extending annular bead orshoulder 40. The lower or opposite end of thetube 39 terminates in aflange 41 provided with abeveled seat 42 for seating engagement upon the seat 2l of the shoulder orflange 20 of theinner tube 19. When theouter tube 39 is dropped over theinner tube 19, the outer tube will automatically seat itself and is held in such position by thespring catches 22, thebeveled seat 42 striking the angular lip 23 to automatically move the spring catches outwardly, after which the catches engage theflange 41.

Associated with and held by thetube 39 is a dust collecting bag andair filter 43, the same being constructed of paper or other substance which will permit of the escape of air through the Walls thereof but will prevent the passage of dust particles therethrough. YThebag 43 is formed with anopen neck 44 while fixed within the neck and rising upwardly into the body of the bag is atube 45 constructed of the same material as the bag body, or any other like material. The material from which the bag is constructed although being sectional is suiiiciently stiff to avoid collapsing after inflation. Encircling theneck 44 is a reinforcingcollar 46, while circumferential rows of stitching 47 pass through the collar,neck 44, and lower end of thetube 45 for securing the parts together. Although stitching has been shown it is understood that any other fastening means maybe resorted to if desired. Thetube 45 of the bag extends upwardly to a point approximately two-thirds of the length of the bag and` terminates in an inwardlytapered portion 48.

The tubular portion45 of the lter bag telescopes thetubular pipe section 39 as best seen in Figure 4 of the drawings, and the lower end of the said pipe section adjacent theshoulder 41 is formed with a bead orstop flange 48 adjacent to which the exterior of the tube is formed with amilled surface 49 to be frictionally engaged by the lower end of thefilter tube 45. The upper end of thetube 39 has its exterior periphery formed with a spiral milledsurface 50, the same terminating adjacent the top end of the tube and serving two purposes, namely, a means for facilitating the easy insertion or removal of the filter bag upon the pipe as illustrated in Figure .8 of the drawings, and as a means by which a firm grip may be obtained by grasping the top of thebag 43 and compressing the same about thetube 39 to enable the removal of the bag andtube 39 from within thecylindrical casing 16 when it is desired to empty the contents of the bag or to replace a used bag by a new one. The uppertapered end 48 of thetube 45 extends slightly above the top end of thetube 39 but coacts with the tapered end of thetube 39 for a tight frictional fit.

Mounted on the side of thecylindrical casing 16 is a manually operatedelectric switch 51 to which anelectrical attachment cord 52 connects, while extending from theswitch 51 and held -portion of thehandle 34 and the collars 33 and close to the exterior of thecasing 16 is anelectric cord 53 connected to acord section 54 by an electric male andfemale connector 55. Thecord 54 carries aplug 56 for connection with theelectric motor 12 of the vacuum floor tool 1l. Spaced clips 5'7 are mounted onthe side of thecylindrical casing 16 around which theattachment cord 52 may be wound when the device is not in use.

In practice, assume that the various parts are in the position shown in Figure 2 of the drawings, and theattachment cord 52 is connected with a source of electric supply, and theswitch 51 is turned on in order to place themotor 12 in operation which produces a suction within the floor tool 11 which expels the air through thenipple 13,hose 25 and causes a column of air to rise upwardly into theair exhaust tube 19. The air after passing through` the open top ofthetube 19 enters the body of thefiltering bag 43 which air of course puffs out the bag but only to an extent that the walls of the bag are disposed in spaced relation with respect to the inner walls of thecylindrical casing 16.. 'I'he air when entering the bag is of course filled with particles of dust and dirt, which are trapped within the bag and accumulate in the space between thetube 45 of the bag and the walls of the body thereof. The air escapes through the pores of the bag body and passes out through theexhaust openings 38 as shown by the arrows in Figure 2 from where the air is deflected by thedeflector plate 36 to cause the same to be directed downwardly of thecylindrical casing 16. The dust collecting and filtering means operates on the principle that the air and dust passing upward through theair tube 19 is confined within said tube and the air velocity therethrough is evenlyl maintained until the air and dust is exhausted into the bag, at which time the velocity is dissipated or reduced due to the enlarged space, thus causing the dust separation. The dust particles drop by gravity to the bottom of the filter bag where they are trapped.

When it is desired to remove thefilter bag 43 for emptying the accumulation of dust and dirt, or for the substitution of a new one therefor, theclamps 32 are released and theouter end cap 30 removed, whereupon the operator reaches within thecylindrical casing 16 and compresses the upper closed end of the bag about thetube 39, grasping the tube adjacent themilled portion 50. -This gives the operator a firm grip to enable thetube 39 to be released from thecatches 22 and slid outwardlyof theinner tube 19. When fully removed, as shown in Figure 4 of the drawings, the extending end of thepipe 39 is grasped and pulled free of thetubular portion 45. It is possible to use filtering bags which are entirely disposable after one use, or if desired a cloth or paper bag such as shown in Figure 4 wherein the upper end is openable but is normally closed by asuitable sealing means 58 which may be opened in order to enable the emptying of the accumulated dust or dirt from within thebag 43.

In Figure 9 of the drawings I have illustrated adeodorizer 59 associated with thecap 30, and which includes aholder member 60 having avthreaded stem 61 for threading engagement with a threaded ferrule orsleeve 62 carried by the reduced end of thehand grip 24. Theholder member 60 is supported in spaced relation with respect to thecap 30 and removably receives a deodorizingelement 63 which may be in the form of disinfecting crystals, said holder member having openings orscreen walls 63 therein in order to permit the exhaust air to pass through the crystals and out through theexhaust openings 38 in thecap 30. It will thus be seen that the air exhausted from thecylindrical casing 16 is subjected to a deodorant which will serve to purify or perfume the. air of a room during use of the device in the cleaning thereof.

In Figures 10 and 11 of the drawings, I have illustrated a slightly modified form of air exhaust and deodorizer. In this form the hand grip 24' supports anend cap 30 provided with a vertical side wall or dependingiiange 64 which is provided with a series ofair exhaust openings 38. These openings extend for only one half the circumference of the side wall and are positioned so as to be at the side of the device opposite to the position of the operator when operating the same. Thehand grip 24 also supports an inner cap member 65 providedvwithair exhaust openings 66 which serves to maintain thedeodorizing element 59 in position upon the upper end of thecylindrical casing 16. In this form the deodorizing element is seated directly over the upper end of thecasing 16 which necessitates all of the exhaust air passing therethrough from whence said air passes to the atmosphere through thelopenings 66 and 38. By arranging the openings 38' in the manner shown and described, the air is exhausted in a direction away from the operator.

In Figure 12 of the drawings a further modification is shown wherein the cylindrical casing 16' is formed with anoutstanding nipple 67 in its side wall adjacent the open top end thereof. Abayonet slot 68 is formed in the nipple, while the collar 69 is engageable with the nipple by reason of apin 70 engaging in thebayonet slot 68. The collar 69 constitutes a holder for the deodorizing element 70'.' In this form, a closed cap 71 ts upon the upper end of the cylindrical casing 16' which necessitates the exhausting of all air through the deodorizer 70' mounted in the side of the cylindrical casing 16'. When cleaning and not deodorizing a room the deodorizer may be removed from the attaching nipple.

From the foregoing description, it will be seen that I have provided a vacuum cleaning device in which a cylindrical casing acts as a holder for a filtering bag, the said casing acting as a handle during the use of the device and which dispenses with the general practice of mounting the dust collecting bag upon and exteriorly of the handle. By reason of the construction shown. a high eiliciency is obtained in the filtering of the air exhausted from, the device as the bag provides a large filtering area which in no way will interfere with the free flow of air from the floor tool to the exhaust of the same to the atmosphere. Also, it is possible to perfume or disinfect the atmosphere of a room during a cleaning operation.

While I have shown and described what I deem to be the most desirable embodiment of my invention, I wish it to be understood that various changes as come within the scope of the appended claims may be resorted to if desired.

Having thus -described the invention, what' I claim as new and desire to secure by Letters Patent is:-

1. In a vacuum cleaner, a cylindrical casing having an air exhaust at one end thereof. an exhaust air tube opening through one end of said tubular portion in spaced relation to the side walls of the bag and providing an open passage throughout its length and terminating adjacent the closed end thereof and into which said exhaust air tube extends.

2. In a vacuum cleaner, a cylindrical casing, a removable cap closing one end of said casing, a handle member extending from said cap, said casing having an air outlet, an air exhaust tube opening through the other end of said cylinder and extending thereinto, an air filtering and dust collecting bag provided with a central tubular portion lrising inwardly of the body in spaced relation to the walls thereof, a removable tubular member telescoping said exhaust tube, and the tubular portion of said bag, and means for releasably securing said tubular member upon said air exhaust tube.

3. In a vacuum cleaner, a cylindrical casing, a removable cap closing one end of said casing, a handle member extending from said cap, said casing having an air outlet, an air exhaust tube opening through the other end of said cylinder and extending thereinto, an air ltering and dust collecting bag provided with a tubular portion rising inwardly of the body in spaced relation to the side walls thereof, a removable tubular member telescoping said exhaust tube, and the tubular portion of said bag, friction contact surfaces provided on the exterior of said tubular member adjacent the opposite ends thereof, and means for releasably securing said tubular member upon said air exhaust tube.

4. In a vacuum cleaner, a casing through which air is passed, an air tube extending into said casing and having communication with the interior thereof. a flexible dust collector bagand filter having an open restricted neck, a flexible tube extending within said bag from said neck in spaced relation to the side walls of said bag, and a rigid tube telescoping said flexible tube and in turn telescoping said air tube.

5. In a vacuum cleaner, a casing having an outlet at one end thereof, a rigid air inlet tube extending inwardly of said casing from the opposite end thereof and terminating short of the outlet end, a flexible air filtering and dust collecting bag within said casing-having a reduced open neck, a flexible tubular portion extending centrally within the body of' said bag in spaced relation to the walls thereof, a rigid bag holder tube passing through said flexible tubular portion and Iinsertable therein before the placing of said bag into said casing, said holder tube fitting onto said air inlet tube, and releasable interlocking means between said holder tube and said air inlet tube for holding the former against accidental longi-A tudinal movement relative to the latter.

6. In a vacuum cleaner having an air exhaust tube, a flexible air filtering and dust collecting bag open at its bottom and provided with a central tubular portion rising inwardly of the body of the bag from the open bottom and in spaced relation to the sides and the top wall thereof, and a rigid bag holder tube telescoping the central tubular portion of said bag and itself telescoping said air exhaust tube.

. HARRY

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