US2418371A - Suction cleaner - Google Patents

Description

April 1, 1947. D. G. SMELLIE sucnon CLEANER Filed April 8, 1943 3 Sheets-Sheet 1 INVENTOR- Dona'ld 6.6mellie BY 6 fl77 April 1, 1947- D. G. SMELL IE SUCTION CLEANER Filed April 8, 1945 3 Sheets-Sheet 2 INVENTOR. 'Donahi 6.8mell'x'e April 1,1947. D. s. SMELL-IE SUCTION CLEANER Filed April 8, 1943 3 Sheets-Sheet 55 f INVENTOR. Donald 6.8mellie Patented Apr. 1, 19417" SUCTION CLEANER Donald G; Smellie, Canton, Ohio, assignor to The Hoover Company, North Canton, Ohio, a corporation of Ohio Application April 8, 1943, Serial No. 482,231

' 8 Claims. (Cl. 229 -53) The present invention relates to suction cleaners in general and more particularly to dirt-filtering bags for suction cleaners.

An object of the invention is to provide a new and improved dirt-filtering bag for a suction cleaner. A further object is to provide a dirtfiltering bag having an inlet opening formed in pleats. joined together and reinforced interiorly and exteriorly to span the creases of the adjacent pleats. Another object is to provide a dirtfiltering' bag having a pleated inlet opening cut normal, to and at an angle to the longitudinal axis of the bag for connection to the cleaner body. A further object is to provide a method of making the dirt-filtering bag. Other objects and advantages of the invention will be apparent in the following specification and drawings; wherein:

Figure 1 is a side elevation with parts broken away of one-embodiment of the invention;

Figure 2 is a perspective view ofthe pleats forming the bag mouth prior to securing certain of the pleats together;

Figure 3 is an exploded perspective view of the method of attaching a reinforcing member to the pleated bag mouth;

Figure 4 is a perspective view of the completed bag mouth'prior to being collapsed for storage;

Figure 5 is a perspective view of the bag collapsed for storage;

Figure 6 is a perspective view of the bag having'its mouth formed into a circle for attachment to the cleaner body; I

Figure 7 is a side elevation with parts broken away of another embodiment of the invention;

Figure 8 is a perspective view of the bag material having its pleats secured together and in a collapsed position;

Figure 9 is a perspective view of the pleats arranged at 90 degrees to that shown in Figure 8 and showing the method of making an angular,

cut to provide an angular marginal edge at the entrance to the bag mouth;

Figure 10 is an exploded perspective view of the method of attaching a reinforcing member to the angularly shaped pleated bag mouth;

Figure 11 is a perspective view of the com-- by a suction air passageway ll with a fan chamber l8 communicating with an unshown exhaust passageway which conveys dirt-laden air to a bag l9. A housing -is mounted on the a shaft which supports'- a fan 2| in the fan chamber l8 and provided on the fan is a belt pulley 22 in the suction air passageway H. An

agitator 24 is rotatablymounted in the nozzle l6 and is driven by a belt 25 extending to the pulley 22. The cleaner body is is supported on wheels 26 and is propelled over the surface to be cleaned by a handle 21 the cleaner body.

A bag adaptor 30 is pivotally mounted on a bag ring 3| removably attached to-the rear end of the cleaner body l5 and has a tubular member 32 connected at one end to the cleaner body exhaust passageway by a flexible bellows 33, and the opposite end of the tubular member 32 receivesthe bag mouth 34 of the bag l9. The bag mouth 34 is secured tothe'tubular member 32 by a band 35 exterior of the bag mouth and is actuated by a lever 36 for removably clamping 30 by the handle 21.

The bag l9 may be formed of dust-filtering I material such as paper or other suitable material and is provided with pleats designated by the numerals to 41, inclusive, and walls 48 and 49. The pleats extend from the bag mouth 34 longitudinally of the bag to an unshown open- .ing at the top of the bag, and the top opening may be closed by a suitable unshown removable clamp for emptying the dirt from the bag.

The cross-sectional area of the bag mouth is determined by gluing pleats 40 and 44 to the bag wall 49, pleat 44 to pleat 45, pleat 40 to pleat 4|, pleat 46 to pleat 41, pleat 42 to pleat 43, and pleats 41 and 43 to the bag wall 48, whereby the interior surfaces ofthe pleats 45, 46 and 4|, 42 are the only portions of the pleats which are not joined together. The area of the pleats which are joined together longitudinally so of the bag is indicated by the shaded portion 50 in Figure 2 to thereby constrict thelower end of the bag, whereby whenthe latter is inflated the pleats beyond the constricted mouth will unfold to provide the necessary bag wall area to filter out the dirt discharged by the fan into body l5 and encloses an unshown motor having I pivotally mounted on 3 the bag l8, and the inflated bag will be supported by the outer bag 31,

The mouth of the bag is provided with a reinforcing member 5| which has a tubular valve 62 extending within the bag Ill-and a collar 53 formed in four sections 54 which are positioned at the extreme edge of the bag mouth and folded extend over the exterior surface of the bag.

In order to mount the reinforcing member 3| on the bag mouth, the valve 52 is placed on a square mandrel 80, as shown in Figure 3, so that the slots 55 between the collar sections 54 are along the longitudinal edg 5 9|. of the mandrel 90, and the collar sections 5 and the valve 52 are provided with .an adhesive such as glue. The

' pleated bag mouth 34 is arranged on the mandrel v 90 so that the adjacent creases 92 of the pleats at the interior of the mouth and the creases 93 of the pleats at the exterior of the m'outhare positioned along the flat sides of the mandrel 90.

The bag mouth 34 is then moved forwardly on the mandrel 98 with the collar sections 54 along extending inwardly of the bag 60 and a collar 82 formed in four sections 83 which are arranged at the extreme end of the bag mouth and are folded to extend over the exterior surfaces of the bag mouth. The lower end of the valve 8| adjacent the collar 82 is contoured complementary to the angular shaped bag mouth Bl.

In order to attach the bag mouth 8| to the reinforcing member 80, the latter is placed on a square mandrel 84 so that the marginal edge of the valve 8| lies flush with the inclined face 85 of the mandrel 84, as shown in Figure 10. The bag mouth 6| is then placed on the mandrel 84 and moved forwardly to exteriorly telescope the valve 3| until the marginal edge of the bag mouth is flush with the inclined face 85 of the mandrel.

Thereafter, the collar sections 83 are folded over the fiat sides of the mandrel, the collar 53 and the valve 52 span the adjacent creases of the folds interiorly and exteriorly of the bag mouth to thereby protect and reinforce the same.

Thereafter the bag is removed from the mandrel Stand folded as indicated in Figure 5 for storage and shipping, and when so folded the adjacent creases 92 of the pleats are disposed in the fiat portion of the bag and the creases 93 at the longitudinal-corners of the bag. When it is desired to use thebag, pressure is exerted on the longitudinal corners 59 to thereby form the bag mouth substantially circular as shown in Figure6 for attachment to the tubular member ing material and has an angularly shaped bag mouth 6| whichis removably attached to a bag adaptor 62 similar to that previously described with the exception that the band 63 is contoured toclamp the anguiarly shaped bag mouth 6| to the adaptor 62.

The bag material 65 is formed in pleats longitudinally of the bag in the same manner dematerial is collapsed to the flat condition as shown in Figure 8. Pressure is then applied to the opposite corners 6B of the pleats (to re-arrange the pleats to the position shown in Figure 9. The angularly shaped bag mouth 6| is formed scribed in the first embodiment, and the bag v by cutting away a portion 61 of the bag material inclined edges 16 of the bag mouth.

The mouth of the bag-is provided with a reinforcing member 80 having a tubular valve 8| the exterior of the bag and glued thereto, whereby the' collar sections 83 span the adjacent creases 86 of the exterior folds and the valve 8| spans the adjacent creases 8 1 of the interior folds as shown in Figure 11. The bag may then be folded as shown in Figure 12 for storage and shipping. 1 M

In assembling the bag on the adapter 62, the

projecting straight edge 14 of the bag mouth 8| initially contacts the adaptor and guides the bag mouth thereon and aids in forming the bag mouth into an annulus to telescope the, adaptor 62, and the bag is retained in proper position on the adaptor by the band 63.

I claim:

1. A paper dirt-filtering bag for suction cleaners, said bag having longitudinal pleats,'certain of said pleats being joined together and others pleats.

2. A bag having its material formed into a rnouth for said bag, said bag mouth having its marginal edge formed by a projecting portion, another portionof said marginal edge offset rearwardly from said projecting portion, said portions extending normal to the longitudinal axis of said bag, and said-bag mouth having a portion of said marginal edge inclined to the longitudinal axis of said bag and extending between said projecting and rearwardly ofiset'portions.

3. A bag having its material pleated to form a bag mouth, said pleated bag mouth having a portion of its marginal edge normal to the longitudinal axis of said bag, and another portion of saidmarginal edge inclined to the longitudinal axis of said bag, and a member formed complementary to said portions of said marginal edge of said bag mouth for spanning the adjacent creases of said pleats to hold the latter in pleated position at said bag mouth.

4. A distensible tube having a plurality of folds in its material to form a mouth for said tube,

some of the material forming said folds being attached together and other material forming other of said folds being unattached for separation when said tube is distended, said tube being so constructed and arranged that when distended said unattached material separates to form an open mouth.

5. A distensible tube having a plurality of folds in its material to form a mouth for said tube, some of the material forming said folds being attached together and other material forming other of said folds being unattached for separation to form an interior wall for said mouth when said tube is distended, said tube being so constructed and arranged that when distended said unattached material separates to form an open mouth. A Y t 6. A distensible tube having its material folded into a plurality of pleats to form a mouth for said tube, said pleats having their creases disposed interiorly and exteriorly of said mouth. some of thepleated material being attached together and other of said material being unattached for separation when said tube is distended to open said month, said tube being so constructed and arranged that when distended said unattached material separates to form an open mouth.

7. A dirt filtering bag for suction cleaners, said bag having a plurality of folds to form a bag mouth, some of the material forming said folds beingattached together and other material forming said folds being unattached, said attached and unattached material of said folds defining the .bag mouth.

8. A bag adapted for connection to a suction cleaner body, and comprising a bag having a i0 longitudinal axis of said bag, said normal edge being adapted for initial contact with the cleaner body to guide the inclined marginal edge of said folded bag mouth onto the suction cleaner body,

DONALD G. SMELLIE.

nnrnnnncn s crrEn The following references are of record in the file of this patent:

UNI'I'ED STATES PATENTS Number Name Date 2,128,374 Midulla Aug. 30, 1938 2,331,536 Cerf et a1 Oct. 12, 1943 2,221,617 Steen Nov. 12, 1940 25 2,259,752 Kimple Oct. 21, 1941 2,234,065 Vogt Mar. 4, 1941 1,174,552 Dubois et al Mar. 7, 1916 198,218 Sawyer Dec. 18, 1877 1,171,431 Gorton 1 Feb. 15, 1916 Hanlon Oct. 22 1929

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