US2025946A

US2025946A - Vacuum cleaner

Info

Publication number: US2025946A
Application number: US628324A
Authority: US
Inventors: Wenner-Gren Axel Leonard
Original assignee: Electrolux Corp
Current assignee: Electrolux Corp
Priority date: 1931-08-17
Filing date: 1932-08-11
Publication date: 1935-12-31
Anticipated expiration: 1952-12-31
Also published as: FR740846A; GB386588A

Description

Dec. 31, 1935. A. L. WENNER-GREN 2,025,946

VACUUM CLEANER Filed Aug. 11, 1952 INVENTOR ATTORN EY Patented Dec. 31, 1935 terms VACUUM CLEANER Axel Leonard Wenner-Gren, Stockholm, Sweden, assignor to Electrolux Corporation, Dover, DeL, a corporation of Delaware Application August 11, 1932, Serial No. 628,324 In Germany August 17, 1931 8 Claims.

The present invention has for its object to provide a vacuum cleaner in which it is possible to remove the dust collected with ease and hygienically.

In accordance with the invention the dust is led into a receptacle of impervious material in which is provided a dust receiver of readily destroyable material, such as paper, which receiver is also impervious. The air leaves the receiver through a pervious dust separator which is preferably positioned at the top of the receiver whereby the dust falls downwardly into the receiver and the air passes upwardly through the dust separator. A feature of the invention consists in the provision of a handle cooperating with the receptacle to hold a member comprising the aforesaid dust separator on the receptacle with the dust receiver held between the receptacle and such member. Further objects and the nature and advantages of the invention will become apparent from a consideration of the following descriptiontaken in conjunction with the accompanying drawing showing one form of the invention, which drawing constitutes a part of this specification, and of which:

Fig. 1 is a vertical cross-sectional view through a vacuum cleaner embodying the invention; and

Fig. 2 is a top or plan view of the cleaner shown in Fig. 1.

The vacuum cleaner comprises a receptacle ID of impervious material, such as sheet metal. Secured to the receptacle I0 is a handle H. A motor I2 positioned between the receptacle and 5 the handle drives a fan 13. Below the fan and between the interior of the receptacle I0 and the fan is a dust separator I4 of pervious material, such as cloth.

Within the receptacle l0 and closely adjacent 40 the wall of the receptacle is a dust receiver l6 made of impervious material which can be readily destroyed, such as paper. The upper part of the dust receiver or paper bag i6 is held between a flange 20 on the upper partof the receptacle l0 and a supporting member I! for the dust separator l4 and preferably extends beyond these members so that it may be held in place by the hand while the member I! is being put in place. In this way the upper edge-I5 is prevented from 50 getting folded under member IT. The member ll may consist of an annular plate edged with a rubber band 2!, which rubber band seats on the outwardly extending flanged portion 20 of the receptacle. The member I! is preferably formed 55 with an inner flange 33 curved to form a groove so that the dust separation cloth M can be tied in the groove by a string and so that this cloth can be readily replaced.

A housing 22 for the fan rests on the top of the rubber member 2|. Mounted on the housing 5 22 is the motor I2 and the motor housing 23. An indentation 24 is formed in the upper part of the motor housing into which sets a pin 25 which is pressed downwardly by a spring 26 and which may be pulled upwardly by means of a knob 27. 10 The handle I I is provided in its upper part with a hand-grip 28. The handle is pivotally mounted at 29 to brackets 30 secured to the metal receptacle I0. When the handle is in position with pin 25 engaging indentation 24, the handle serves 15 to clamp the parts together and to effect an airtight seal between the receptacle [0, the top of the bag Hi, the rubber band 2| on member I! and the base of housing 22. Moreover, this arrangement for clamping the parts together does not 20 interfere with the top l5 of the bag protruding beyond the other parts. An inlet connection I8 extends through plate I! and is joined to an elbow IS on housing 22 into which a suction hose may be inserted. The fan I3 discharges through 5 connection 3i to which a hose may also be attached for blowing purposes.

The operation of the vacuum cleaner is as follows:

Dust-laden air enters through the connection 30 I9 and fiows downwardly through pipe [8.into the interior of the receiver or bag l5. Dust is deposited in the bag i6 as the air is reduced in velocity and changes its direction to pass upwardly through the dust separator It, on the surface of which remaining dust is withdrawn from the air stream. Dust falls downwardly from the dust separator and collects in the bottom of the receiver I6. The fan draws air upwardly through separator l4 and into the center of the fan and discharges the air outwardly to be discharged at 3| to the atmosphere or other suitable place of disposal. I

To remove dust from the vacuum cleaner the knob 21 is lifted whereby the handle H can be swung on the pivot 29 so that the motor can be lifted off of the receptacle It). With the motor the fan housing is lifted off which leaves the member I! and the dust separator 64. This part is now taken out and the paper bag Hi can be 59 removed. If desired, and preferably, the bag [6 is provided at its upper edge with a draw-string whereby it can be readily closed so that it may be thrown away without spreading dust into the atmosphere. Such a bag may readily be burned along with its contents without removing the latter from the bag. A newbag l6 can then be placed in the container andthe parts put together in the reverse order.

It will be noted that the air does not pass through the collecting bag which permits the latter to be made impervious. Thus the dust can be closed in the bag before the bag is removed from the vacuum cleaner and there is little likelihood of dust escaping into the atmosphere, as can readily'take place with bags of the type which are designed to have the air pass through them.

It will be apparent thatwhen the apparatus is in operation the pressure within the bag is less than atmospheric. Hence, there is no danger of the bag bursting. However, if atmospheric pressure were permitted to act on the outside of the bag, it would collapse the bag. The provision of the receptacle ID of rigid impervious material closely surrounding the bag prevents atmospheric pressure from acting on the bag-and therefore prevents collapse of the latter.

It will be seen that with respect to both the dust separation member l4 and the destructible bag I6 that renewal is easy and cheap.

What I claim is:

1. In a vaccum cleaner, a rigid receptacle of impervious material having an opening at the top,-a paper bag fitting into said receptacle, a member adapted to fit onto said receptacle with the paper bag held between said receptacle and said member, a motor and fan unit seating on said member, and a handle pivoted to said receptacle and being engageable with said fan and motor unit to clamp the unit against said member.

2. In a vacuum cleaner, a rigid receptacle of impervious material having an opening at the top, a paper bag fitting into said receptacle, a member adapted to fit onto said receptacle with the paper bag held between said receptacle and said member, a fan housing seating on said member, a. motor housing secured to said fan housing, and a handle pivoted to said receptacle and being engageable with said motor housing to clamp said fan housing against said member.

3. A vacuum cleaner comprising a dust receptacle of impervious material having an opening at the top, a closure member for said opening, means for withdrawing air through an aperture in saidclosure member, a dust separating member across said aperture, a dust receiver of flexible impervious material fitting in said receptacle and being substantially supported thereby and having an opening corresponding to the opening at the top of said receptacle, and an inlet conduit passing through said closure member andextending through the openings in said' recep tacle and in said dust receiver.

4. A vacuum cleaner comprising a dust receptacle of impervious material having an opening a closure member for said opening,

at the top, means for withdrawing air through an aperture in said closure member, a dust separating member across said aperture, a paper bag fitting into said receptacle and snugly lining the receptacle up to the closure member and having an opening corresponding to the opening at the top of said receptacle, the upper part of said bag extending between said receptacle and said closure member and being secured thereby, and an inlet conduit passing through said closure member and extending through the openings in said, receptacle and in said bag.

5. A vacuum cleaner comprising a dust receptacle of impervious material having a bellflanged opening'at the top, a closure member for i the upper part of said bag extending between K said bell-flange and said closure member and being secured thereby, and an inlet conduit passing through said closure member and extending through the openings in said receptacle and in said bag. 6. A vacuum cleaner comprising a dust receptacle of impervious material having an opening at the top, a closurev member for said opening, means for withdrawing air through an aperture in said closure member, a plate member extending across said opening and between said receptacle and said closure member, said plate member being formed with an aperture therethrough, a pervious' dust separating member over said aperture, a dust receiver of flexible impervious material fitting in said receptacle and having an opening corresponding to the opening at the top of said receptacle, the upper part of said dust receiver extending between said receptacle and said plate and closure members, and an inlet conduit passing through said closure member and said plate member and extending through the openings in said receptacle and in said dust receiver. 1

7. A vacuum cleaner comprising a dust receptacle of impervious material having a bellflanged opening at. the top, a closure member for said opening seating in said bell-flange, means for withdrawing air through an aperture in said closure member, a plate member extending across said opening and seating in said bellfiange between the bell-flange and said closure member, said plate member being formed with an aperture therethrough, a pervious dust separating member over said aperture, a dust receiver of flexible impervious material fitting in said receptacle and having an opening at the top thereof, the upper partof said dust receiver extending between said bell-flange and said plate and closure members, and an inlet conduit pass ing through said closure member and said plate member and extending through the openings in said receptacle and in said dust receiver.

8. A vacuum cleaner comprising a dust recep' tacle of impervious material having an opening at the top, a closure member for said opening,

means for withdrawing air through an aperture in said closure member, a plate member extending across said opening and between said receptacle and said closure member, packing means on said plate member between said receptacle and said closure member for efiecting an air tight seal therebetween, said plate member being formed with an aperture therethrough, a per- '-vious dust separating member over said aperture,

a dust receiver of flexible impervious material fitting in said receptacle and having an opening at the top thereof, the upper part of said dust receiver extending between said bell-flange and said plam and closure members, and an inlet conduit passing through said closure member and said plate member and extending through the openings in said receptacle and said dust .receiver.

' AXEL LEONARD WENNER-GREN.