US1782064A - Valve for vacuum-cleaner dust bags - Google Patents

Description

Nov. 18,1930. R. E. GRAY 1,782,064 V ALVE FOR VACUUM CLEANER DUST: BAGS Filed April 16. 1929 Patented Nev. 18, -1930 UNITED STATES PATENT OFFICE ROSE n. army, or sacnanmvro, CALIFORNIA VALVE roa vacuum-cmanna :oUs'r BAGS- Application filed April 16, 1929. Serial 1T0 355,637.

sence of suction within the bag.

This invention relates to improvements in mechanical sweeping and cleaning apparatus and particularly to a closure for the inlet end of the bag adapted to retain the dust and for-. eign material collected by the apparatus.

In devices of this character, such as the ordinary vacuum cleaner, the receptacle is made from suitable fabric that permits air to pass therethrough with relative freedom, while retaining the dust, lint, and foreign material, within the bag, untilsuch time as it is desired to empty the latter. However, it is most important that the refuse passing. into the bag with the air shall not be permitted to return to'the fan or other vacuum producer. Moreover, it is important that the flow of air shall be relatively as unimpeded as possible, regardless of the presence of any closing means for preventing such return of the collected dust and refuse.

Bearing these facts in mind, the present invention contemplates the provision of a,clo-

sure for the inlet end of the dust bag, such closure consisting of a pivotally mounted valve that is removably secured in the inlet end of the bag and which is moved to open position with the greatest of freedom by suction created within the bag at all times during operation of the apparatus. For this reason,

the valve is made comparatively light whileat the same time it is of suflieientweight to insure its being automatically closed -or moved to its closed position upon cessation of the operations of the apparatus or in the ab- With these and other objects in view, the invention consists of certain novel details of construction and combinations and arrangements of parts, all as will be hereinafter more fully described and the novel features there- 1 of particularly pointed out in the appended claims.

In the accompanying drawings-,-

Figure 1 is a'view in side elevation, partially broken away, of a portable vacuum cleaner and its associated dust receptacle.

Fig. 2 is a vertical section through the connector and dust bag with the valve in open position.

Fig. 3 is an end view of the valve open.

Fig. 4 is'a plan view partly in section of the connector looking in the opposite direction from Fig. 3, and shofwingthe valve closed. As is well understood, the dust baglO is attached at its inlet end to the apparatus 11 by a connector 12 and its rear end is suspended from the handle 13 by a chain or the flexible connection 14. This is the usual construction in the commercial portable vacuum cleaner now on the market, comprising a fan for drawing dirt and refuse by suction through a nozzle 15 and directing it through the outlet nozzle 16 of the apparatus into the fabric dust (:5 bag 10. In order to prevent refuse once carried into the bag from returning to the fan, a closure. is provided for the inlet end of the the connector with bag for that end which is attached to the con nector 12. As shown more fullyin Fig. 2, this closure for the inlet end of the bag consists of a flap valve 17 detachably secured at said inlet end, said valve being pivoted to open inwardly into the bagso that it will be opened by suction of air passin through the bag and free to close automaticaIly or by gravity upon cessation of the operation. of the apparatus in theabsence of suction.

Preferably, said valve is pivoted at 18 on a ring 19 that is clamped in the connector 12 between the interior shoulder 20 formed on said connector and a washer 21. It might be added that the dust bag 10 is secured to the connector by the clamping ring 22. As will be understood, the connector 12 is'attached to the outlet nozzle 16of the apparatus by a pin (not shown) engaging in the ba onet slot 23. While the valve 17 is comparatively light so. a as to facilitate its being 0 ened b suction within' the bag, itis pre erred t at it be to counterweighted as at 24 or at theed e of the valve remote from its pivot 18. sually, after the dust bag has been filled toits'normal capacity it is emptied by openin lit at its end which is suspended from-the andle of the apparatus, but it will be a preciated that with the present invention t s procedure may not necessarily be followed as the i valve 17 can be easily and quickly removed by removing the washer 21 and it can, "of j course, be replaced "with the same 'facility after the bag is emptied of the refuse contained therein. I

What I claim is: p

1. The combination ofa dust bag connector, means for'attaching aodust bag to said connector, and an inlet valve for said bag removably secured in said connector, said valve being automatically movable to its closed position in the absence of pressure in the connector. L p

2. The combination of a dust bag connector, having a central bore, means for attach ing a dust bag to said-connector, a washer in for said dust bag pivoted on said ring mem-- said centralbore, andan inlet valve for said bag detachably secured between said washer and connector.

3. The combination of a dust bag connector having a central bore, means for attaching a dust bag to said connector, a washer in said central bore,- a ring clamped between said washer and connector, and ahinlet valve her.

4. The combination of a dust bag connector having akcentral bore, means for attaching a dust bag to said connector, a washer in said central bore, and a ivotally mounted inlet valve for said'dust ag removably secured between said washer and connector.

5. The combination of a dust bag connector, having a central bore, means for attaching a dust bag to said connector, a removable washer msa central bore, a ring member -secured between said washer and connector, an inlet valve for-the bag pivoted on said member, and a counterweight on said valve at a p int remote from the pivotal center of the latter.

i ROSE E. GRAY.

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