US3016983A

US3016983A - Bag

Info

Publication number: US3016983A
Application number: US773774A
Authority: US
Inventors: Lester J Studley
Original assignee: Studley Paper Co Inc
Current assignee: Studley Paper Co Inc
Priority date: 1958-11-13
Filing date: 1958-11-13
Publication date: 1962-01-16
Anticipated expiration: 1979-01-16

Description

L. JI STUDLEY Jan. 16, 1962 BAG Filed Nov. 15. 1958 INVEN 1 OR. 75 MSW/045V BY AW ,477'02/VEY FIG.7

Filed Nov. 13, 1953, Ser. No. 773,774 3 Claims. (Cl. 183-51) This invention relates to a bag and more particularly to a bag for use as a dust receptacle in a vacuum cleaner. Vacuum cleaners as presently constructed employ disposable type dust receptacles for the purpose of receiving, storing and disposing of the dust, dirt and debris resulting from the cleaning operation. Disposable bags of this type are usually constructed of flexible or pliable filtering paper which is capable of separating and storing the dust and debris in the air stream of the vacuum cleaner. Such bag must be capable of withstanding the manipulation and pressures encountered in use so as to retain the contents thereof without tearing or leakage. Furthermore, the bag must further be provided with sup porting or mounting means whereby it is adapted to be cooperatively associated with the inlet tube or nozzle of the cleaner in an efiicient manner and to act as a support for the bag body.

An additional desired feature of a bag of this type is that it shall be capable of being mass-produced at a cost such that it may be economically used, disposed and replaced with a new bag after the limit of its capacity of dust, dirt and debris has been reached.

It is therefore an object of this invention to provide a bag of the character indicated which is particularly adapted for use as a disposable filter bag in a vacuum cleaner and which provides a substantial capacity and filter surface and forms an enclosure or receptacle for receiving a substantial volume of dust, dirt and debris.

It is another object of this invention to provide a disposable type vacuum cleaner filter bag of the type indicated in association with mounting means for effectively mounting and supporting the bag within the cleaner and during the use, removal, storage or transportation thereof.

It is also an object of this invention to provide a bag of the character indicated which is compactly formed so as to occupy a relatively small shipping and storage space.

It is an additional object of this invention to provide a bag of the character indicated which may be simply and efliciently produced in large quantities at low cost and which effectively receives and stores the dust, dirt and debris separated by it during the vacuum cleaning opera tion from the air stream in which it is entrained.

It is an additional object of this invention to provide a bag of the character indicated wherein the construction and arrangement of the material forming the bag and the mounting means therefor provide for effectively sealing the desired portions of the bag against leakage or escape of the dust, dirt or debris entrained in the air stream during the operation of the cleaner, as well as during the transportation or storage of the dirt filled bag.

Other and further objects, benefits and advantages of this invention will become apparent from the description thereof contained in the annexed specifications, or will otherwise become obvious. It will be understood that the invention here disclosed may be employed for other purposes to which the structure and arrangement are adapted.

In the accompanying drawings:

FIGURE 1 is a perspective view partly broken away showing a bag in accordance with the present invention in extended condition and indicating its relationship to stem a vacuum cleaner inlet nozzle which is shown in broken lines;

FIGURE 2 is a cross-section of the bag shown in FIGURE 1 taken along line 2-2 thereof;

FIGURE 3 is a view of the upper portion of the bag body and the mounting plate shown partially extended in exploded relation;

FIGURE 4 is a side elevational view on a different scale of the upper or mouth end of the bag body in collapsed condition, prior to the attachment of the mounting plate, partly broken away to more clearly show the disposition of the adhesive coated areas;

FIGURE 5 is an elevational view of the upper portion of the bag in assembled form shown on a reduced scale;

FIGURE 6 is a cross-section of FIGURE 5 taken along line 66 therof and shown on an enlarged scale;

FIGURE 7 is a side elevational view of the bag partly broken away showing the bag at an intermediate stage in the process of being opened.

As may be seen from FIGURES l, 2 and 7, the bag forming the present invention is designated generally by the numeral 15 and comprises a bag body 10 surmounted by a mounting plate 11, the bag body 10 is advantageously formed of a filtering paper or similar porous pliable or flexible material which is capable of separating the dust, dirt or debris separated and collected by the vacuum cleaner from the air stream within which it is entrained. The mounting plate 11 is formed of a relatively stitf or rigid material, such as cardboard or the like, which forms a support for the bag: body disposed in a plane normal to the longitudinal axis thereof when the bag is extended. The peripheral edge of mounting plate 11 projects beyond the bag body to form a flange 12 therefor which is adapted to be seated upon a ledge or complementary flange usually formed within the vacuum cleaner housing for that purpose. The mounting plate 11 is apertured as shown at 13 so as to receive the inlet nozzle 14 of a vacuum cleaner, which is inserted therein or abuts with the mounting plate surface area surrounding the aperture in accordance with current vacuum cleaner construction. The bag body 10 is advantageously formed of a flat sheet of paper as heretofore indicated, which is folded to tubular form and secured in that position as by an adhesive seal along the overlapping longitudinal edges of the sheet as shown at 16. The tube thus formed comprises planar face walls 17, which are interconnected by infolded or gusseted side walls 18. The lower end 19 of the tubular body of the bag is closed and sealed as by being folded over and adhered to itself a number of times as shown at 20.

Other and conventional forms of end closure may be employed for enclosing and sealing the bottom end of the bag body it thus for example, a conventional square bottom may be formed thereon.

As may be more clearly seen from FIGURES 3, 4 and 5, the upper or month end 21 of the bag body is formed or cut so that the upper ends 22 of face walls 17 terminate short of the upper ends 23 of the infolded or gusseted side walls 18 whereby extensions 24- are provided for the gusseted side walls. As a result of this arrangement, the surfaces of said extensions 24 are exposed when the bag body is in collapsed condition. It has been found advantageous to provide the transition portion 25 at the juncture of the face walls with said extensions so that there is a gradual transition from the face walls to said extensions of the gusseted side walls. The bag body is shown partially erected or extended in FIGURE 3 for purposes of illustration. It will be understood, however, that normally in the process of manufacture the bag body is in collapsed flat condition, as may be more particularly seen in FIGURES 4 and 6 and that in such collapsed condition the planar surfaces of the face and gusseted side walls lie in parallel planes and are contiguous with each other. A relatively broad stripe of adhesive material 26 is applied along the opposing surfaces of the upper end of the bag body when the body is in collapsed condition so that, as may be seen from FIGURES 3 and 4, the adhesive material is simultaneously applied in a stripe along the upper end of the face walls 17, as well as the surfaces of extensions 24 of the gusseted side walls 18. The adhesive may be applied in any conventional manner as by simultaneously or successively roller, brush, spray or otherwise coating the opposing surfaces of the upper or mouth end of the collapsed tube.

The mounting plate 11 is then applied to the upper end of the bag body. Said mounting plate, as heretofore indicated, is'formed of a relatively stiff or rigid material, such as for example cardboard or the like, which is folded over flat upon itself along fold line 27 so as to form a fold line or bight. The adhesively coated upper end of the bag body is then inserted into the nip of the bight between the confronting surfaces of the folded mounting plate so that said upper end or mouth end of the bag body is received in the bight of said mounting plate. The folded mounting plate is then pressed closely against the adhesively coated surfaces of the bag body so as to form adhesive contact therewith and to establish a sealed relation therebetween. The upper ends 23 of the gusseted side walls are disposed in contact with the interior of the bight or fold line of the mounting plate and it will be apparent that adhesive sealing contact is made with the interior surfaces of the mounting plate and the side wall etxensions as well as the entire adhesively coated upper ends of the face walls.

The assembled bag thus formed may be more particularly seen from FIGURES and 6, wherein it will be noted that when the bag is in collapsed condition the mounting collar is folded over the mouth end portion thereof and lies in parallel contact therewith. There is thus formed a bag which occupies a minimum amount of space and may be readily packaged, shipped and stored.

When it is desired to place the bag into use, the mounting plate is unfolded and extended so as to be disposed in a plane normal to the axis of the bag. The bag in the pnocess of being unfolded may be more particularly seen from FIGURE 7. FIGURE 2 illustrates the bag in completely extended condition. It will be noted from these figures that as the mounting plate is unfolded and extended, the adhesively coated upper end portions of the face walls, as well as the adhesively coated extensions, are thereby folded inwardly and in the direction of the interior of the bag so that such adhesively coated end portions and extensions lie in a similar plane normal to the axis of the bag when the bag is completely ex tended as shown in FIGURE 2. The arrangement is such that the entire upper end of the body portion of the bag is adhesively secured to the undersurface of the mounting plate so as to form an effective end sealed area therefor and to prevent the leakage or escape of dust or dirt from this region of the bag. It will be noted that the extensions of the gussets form a smooh continuum of the upper end of the face walls of the bag and that the arrangement effectively seals the gusseted side walls against the undersurface of the mounting plate in addition to the sealing contact which is established between the undersurface of the mounting plate and the upper ends of the face Walls. As the mounting plate is extended and the upper ends of the face and side Walls are folded inwardly in the direction of the interior of the bag, the face walls of the bag are drawn apart. Simultaneously, a generally triangular fold is formed in the gusseted side walls along the lines indicated by the

numerals

28 and 29 so that the gussets in the side walls are thus unfolded to thereby extend the entire bag.

When the extended in the manner indicated, the bag may be readily inserted into a vacuum cleaner housing and may be effectively supported by means of the flange portion of the mounting plate in abutment with a portion of the housing or other support means. It will be noted that in the particular embodiment illustrated the terminal portions of the face walls extend partially across the aperture in the mounting plate. This arrangement permits the insertion of the inlet nozzle of the vacuum cleaner into the aperture by forcing or crumpling the material of the face walls against the peripheral surface of the nozzle to thereby form a more effective seal therewith.

While the invention has been described with reference to a mounting plate which forms an end closure for one end of the bag, it will be understood that a similar arrangement can be employed for the completely enclosed end of the bag. In such event, the end plate need not be of a rigid or semi-rigid material but may be made of the same material as the bag and without any aperture therethrough. The advantage of using a closure of this type at the other or bottom end of the bag resides in the fact that when the bag is opened there is produced a rectangular-shaped container.

I have here shown and described a preferred embodiment of my invention. It will be apparent, however, that this invention is not limited to this embodiment and that many changes, additions and modifications can be made in connection therewith without departing from the spirit and scope of the invention as herein discolsed and hereinafter claimed.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A disposable dust bag for a suction cleaner, said bag having a body formed of porous sheet material, said body having a pair of opposing side walls and a pair of opposing gusseted end Walls interconnecting said side walls and extending therebetween in the collapsed condition of said bag, means forming a closure for said bag at one end of said walls, and an end closure for said bag at the other end of said walls, said end closure comprising a substantially rigid sheet material member, said side walls and gusseted end walls being secured at said other end thereof to the inner surface of said member to form an effective end sealed area, said member having a central longitudinal fold line so that said member is foldable upon itself with contiguous portions of said inner surface in confronting relation in the collapsed condition of said bag and with said other end of said walls disposed betweensaid contiguous confronting portions in said collapsed condition, said member having free unsecured marginal edges which overlie said side walls inwardly of said fold line in said collapsed condition and which extend laterally outwardly of said side Walls in the extended condition of said bag.

2. A dust bag as in claim 1, said side walls and gusseted end walls having folded portions at said other end thereof in adhesive securement with said inner surface of said member, the folded portions of said end Walls being disposed between the folded portions of saidside walls and said inner surface.

3. A dust bag as in claim 1, said member having an aperture defined therein for cooperatively associating it with a vacuum cleaner structure.

References Cited in the file of this patent UNITED STATES PATENTS 1,603,207 Huston Oct. 12, 1926 2,582,286 Schenck Jan. 15, 1952 2,621,757 Anderson Dec. 16, 1952 2,622,986 Snyder et al Dec. 23, 1952 y. I l l