US 2188428 A
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Description (OCR text may contain errors)
M. E. EVANS' AUXILIARY BAG FOR VA GUUM CLEANERS Jafi. 30, 1940.
Filed Sept. 19. 1939 INVENTOR; M000 E fr4x7s 6212mm! ORNEY.
UNITED STAT PATENT ferric-E .iauxmanr me For. vacuum cums Maud E. Detroit, Mich. Application summ- 19; 19:9. Serial No. 295,635
This invention relates to "acuum sweepers and has particular reference to a auxiliary bag which may be readily. attached to vacuum sweepers. of any makeor model.- I
Medical authorities who have studied the problem, report that many diseases are caused by people inhaling the dust and germs which have been picked up and blown into the air by the modern vacuum cleaners.
A close examination of the. air discharged through the walls of the filter bag of almost any vacuum sweeper will disclose a surprisingly. large amount of fine dust and dirt, and other deleteriqous elements. It must follow, therefore, that 15 germs are also carried through the walls of the bag into the airwhich is breathed.
It is, therefore, one of the objects of this invention to eliminate most of the resulting dust and to greatly improve the sanitary aspects of using a a vacuum sweeper. w I
It is an object of the invention to provide an auxiliary bag for vacuum cleaners, which .is adaptedtotrap most of the fine dust particles which now escape from the conventional vacuum a cleaner bag.,
Another object of the invention is the provision of a device of the character referred to, which is provided with a germicidal medium intended to render harmless the ,greater proportion of the )0 dangerous germs ands microbes picked up and blown into the air 4 ough the walls of the present vacuum cleaner bags.
Other objects and advantages of the invention will become more apparent as the description 35 pmceedareference beingmade from time to time to the accompanying drawing forming part of this disclosure, in which drawing:
Fig. 1 is a view, with parts broken away and partly in section, showing one of my improved auxiliary bags in position on a conventional cleaner.
Fig. 2 is a section taken substantially on the line 2-2 otFig; 1.
Fig. 3 is a fragmentary perspective view bf one of the spacers used on my bag.
Fig. 4 is-an enlarged fragmentary plan view of a strip from which the spacer, illustrated in Fig. 3, is made. V Fig. 5 is a plan view of one of the sheets of material! from which the bag is formed. This view shows the manner in which the sheet is perforated and treated with a tacky germicidal substance, and the position rators when attached.
gm.8isanendviewofthesheet,'illuatratedin assumed by the sepa-' ,Fig. 5. illustrating the manner in which the taclw furface of the sheet is covered to facilitate the handling of the sheet in transportation.
Fig. 7 is an end view of the sheet, illustrated in Fig. 5, with the separators in position.
Fig. 8 is'a modified form of my device. Fig. 9 is a sectional view taken substantially on the line 9-9 of Fig. 8. 4
Referring now more particularly to the drawing, it will be seen that in the embodiment herein l0 disclosed (Fig. 1), 1 illustrate my auxiliary bag I! in position on a conventional vacuum sweeper J3, the filter bag of which is indicated by the reference character I. In this embodiment, the upper end of the bag I! is secured in position by 1i! means of the spring clip it, which is part of the standard equipment of this particular make of sweeper. It will be understood, however, that the upper end ofthe bag may be closed by means of a tie string,"such as is illustrated at H, which 0 closes the lower end of the bag and secures it to the sweeper I3.
, As illustrated in Fig. 1, I propose to entirely' envelop the conventional sweeper bag I4, with 'my auxiliary bag I2. I do this so that I may trap 25 such dust particles and other substances as might be forced through the walls of the bag 14.
My auxiliary bag I2 is preferably made of a single sheet of material (Fig. 5) which may either be a porous fabric or paper, provided with a plurality of minutelperforations l8, through which the air may be permitted to escape. The inner :urface of the bag If is coated with a tacky subtance l9 throughout a substantial portion of its area, except at the top 20 and the bottom 2| where the closure elements engage. The tacky substance 19 has incorporated with it a germicidal agentwhich is intended to kill any germs with which it comes in contact. The tacky and germicidal substances extend throughout the major part of the inner surface of the auxiliary bag, so that substantially all of the air which is blown through the inner bag ll of the vacuum cleaner comes in contact with the taclw and germicidal elements before it escapes from the bag l2; whereby, practically all of the dust particles, germs and other foreign particles are caused to adhereto the inner surface of the auxiliary bag before the air escapes into the room where the sweeper is being used.
The sheet of material from which the bag is. formed, is provided with an adhesive substance along the area indicated at 22, so that the sheet I may be rolled into a cylinder and secured as illustrated in Fig. 2. In order to prevent'the tacky substance on the inner surface of the bag l2 from comingv in contact with the outer surface of the bag I4, I provide a plurality of separators 23. These separators are preferably made of comparatively stifi paper, scored as indicated at 24 in Fig. 4, so that they may be bent into theform illustrated in Fig. 3. These separators are then secured to the inner surface of the sheet comprising the bag l2 along thedotted lines 25 (Fig. 5); The fiat surfaces of. the separators 22 are held in position by means of the adhesive quality of the tacky substance I9.
In order to facilitate the handling and storing of the sheets, I prefer to treat the inner surface of the sheets and then. cover the inner surface with a plain piece ofpaper 12a (Fig. 6). In this manner the sheets may be shipped fiat, and when ready to be assembled the sheet .l2a. may be removed from the treated sheet l2; whereupon the sheet is then ready to have the separators attached and to be rolled into a cylinder, and attached to the sweeper as hereinabove described.
This auxiliary bag may; be removed and destroyed when the tacky surface will no longer accommodate any more dust particles.
In Fig. 8, I illustrate a modified form of my device, wherein I provide a bag having a double thickness. In this modification, the outer member 26 and the inner member 21 are perforated as indicated at 28. In this embodiment the inner member 21 may be of a substantially more rigid material than the .outer member 25. The member 21 is formed with fiared ends as at 29, so that a space 30 is provided between the members. The space 30 is then filled with a suitable filter material 3|, which has been impregnated with a -my invention, it will be understood that certain modifications may be made to accomplish the jsame results, all of which are intended to be within the scope of the appended claims.
Having described my invention, what I claim and desire to secure by Letters Patent is:
1. A cover for a vacuum sweeper filter bag, comprising a sheet of material having means for theescape of air therethrough, said sheet having 5 an area treated with a tacky and gemiicidal substance, said area being provided with a plurality of spacers adapted to prevent the contact of the tacky substance with the filter bag, and said sheet having an adhesive substance along at least one edge thereof.
2. A cover for a vacuum sweeper bag, comprising two or more sheets of material adapted to permit the passage of air therethrough, there being a filter material disposed between said sheets, said filter material being impregnated with a tacky germicidal substance.
3. The device defined in claim 2, wherein the outer sheet is longerthan the inner sheet or sheets, and the long ends of said outer sheet are adapted to serve as closure elements for the cover.
4. A device of the character described, comprising an envelope arranged in cooperation with the filter bag of a vacuum sweeper, said envelope consisting of one or more sheets of material being pervious to air throughout substantially the entire area, said sheet or'sheets being adapted to hold a tacky .germicidal substance throughout substantially all of the pervious area. 30
5. A device as defined in claim 4, there being means to prevent the taclq substance from coming in contact with said filter bag. L
6. A cover for a vacuum sweeper filter bag comprising a sheet of material, perforated, and g treated with a tacky germicidal substance throughout substantially all of its inside area, there being spacers positioned on the inside of said sheet, adapted to cooperate with the said sheet and said filter bag to prevent the tacky m germicidal substance from coming in contact with the said filter bag.
' MAUD E. EVANS.