USRE21846E - Suction cleaner - Google Patents

Description

' June 24, 1941. H, 5 WHITE v Re. 21,846

SUCTION CLEANER Original Filed July 31. 1931 Reissued June 24, 1941 Re,

UNITED STATES PATENT oFFicE SUCTION CLEANER Harry B. White, North Canton, Ohio, assignor to The Hoover Company, North Canton, Ohio, a corporation oi. Ohio Original No. 2,099,413, dated November 16, 1937, Serial No. 554,271, July 31, 1931. Application for reissue July 3, 1939, Serial No. 282,742 r v 14 Claims. (01.15-16) .1

The present invention relates to suction clean- Fig. is a much enlarged fragmentary view in ers, particularly those known as portable succentral longitudinal sectionof certain of the parts tion cleaners provided with a handle pivoted to as shown in Fig. 2 but with the connection the body of the cleaner by which the apparatus straightened to form a straight conduit; as a whole may be directed over the carpet or Fig. 6 is an enlarged fragmentary view in side other floor covering which is being cleaned. With elevation, similar to Fig. 1, and showing a modicleaners of this type it is customary to use a dust fied structure for supporting the upper end of filtering bag formed of cloth, cellulose fiber felt, the bag; and

or other material, which is detachably secured to Fig. '7 is an enlarged view in transverse section the body of the cleaner at a. point separated 10 taken on line of Fig. 6.

somewhat from the point of pivotal attachment of In Fig. 1, a suction cleaner casing l l is shown the cleaner handle, the upper end of the bag beas supported upon wheels l2 and having a nozing supported from the handle at a point adjacent zle l3 arranged for engagement by the carpet, or its upper end. It will be apparent that, in such other floor covering to be cleaned, an electric constructions, the lower end of the bag, adjacent motor, indicated generally at ll, being carried its point of attachment, will be repeatedly flexed by the casing II and adapted to operate a fan, and the bag will be at times under tension not shown, which discharges rearwardly through lengthwise, as the handle is moved up and down an outlet 15. If desired, the cleaner may include during use of the cleaner, resulting in rapid wear a device, 'not shown, for agitating the carpet,

and causing frequent replacement of the bag. located above the opening of the nozzle l3 and This invention pertains particularly to the'atoperated by the motor It. A handle bail I6 is tachment and support of a suction cleaner bag, pivoted to the cleaner casing at H, and to it is and one of the objects of the invention is to prorigidly connected a tubular handle l8 which is vide means for attaching the bag to the body-of preferably provided with a plate l9 supporting a the cleaner and supporting it from the handle switch 20 and an electric cable 2| for supplying which will relieve the bag of all flexure or strain and controlling the current for operating the as the handle is moved. Aiurther object is the motor 14, it being understood that suitable conprovision of means for this purpose which will be necting wires are provided in the tubular hanefllcient and durable, which may be economically dle 18. These parts are of well known construcmanufactured, andv which will facilitate attachtion and are not described in detail as they may ment of the bag, or removal 01' it for emptying. vary greatly without materially afiecting the A still further object is to provide a flexible constructure in which the present invention is emnection between the cleaner outlet and the bag bodied.

which will be durable and will efiectively prevent In order to prevent flexure of the dust-filtering leakage, even under long continued use. Anbag 22 by movement of the handle it, and limit other object of the invention is to provide a any bending of the material of the-bag to that flexible bendable conduit for a dirt-laden air resulting from inflation and deflation thereof, stream in which there is relatively great movethe lower end of the bag is connected to a pivment and bending along the length thereof which otally mounted member which has a rigid arm v is of a type to dislodge adhering foreign material. movably connected at its upper end to the han- Still further objects .of the invention and the. dle, and from which upper end the top of the bag novel features of construction and operation-will is yieldably supported to allow for variations in be apparent from the following specification when length of the bag due to inflation. The pivotally read with reference to the accompanying drawmounted member, to which the bag isrdetachably ing. in which: I v r secured, is connectedby a flexible tubular mem Fig. 1 is a view in side elevation of a suction her to an attaching ring which itself is prefercleaner embodying the invention; ably detachably secured to the discharge outlet Fig. 2 is an enlarged iragmentary view in cenof the cleaner.

tral longitudinal section of a part of the struc- The discharge outlet 15 of the cleaner, as

ture shown in Fig. 1 and illustrates the connec- 5 shown, is provided with a flat circular flange tion flexed to form an angle; 23 widened at the sides to form lugs in which Fig. 3 is an enlarged plan view of certain of threaded studs are mounted, and nuts 24 are the parts shown in'Fig. 1; mounted upon these studs to secure a flat attach- I 'lg. 4 is an enlarged view in rear elevation of ing'rlng 25 in place against the flange 23, by enthe parts showninFig. 3; gagement with laterally projecting slotted ears a used to connect the upper I posi-tion.. The tubular body of ring 41 is provided with an spaced outwardly therefrom and carrying a spring,

50, or other means for con- 2|. The flat face of the ring the flange 2-3 is formed with an annular groove to receive a packing 21, preferably'of felt or similar material, and laterally spaced lugs 2|, project rearwardly from-the upper part of the ring 2i, and to such lugs a short tubular coupling member 29 is pivotally connected by a laterally below the handle it to a point adjacent the upper end of the bag 22, and preferably curved downwardly at its end, as shown at II and provided with a hook 28. A coiled tension spring I! is end'oi' the rod II .to the handle, being secured to the rod in any suitable manner and being connected at its upper end, if desired, to a perforatedtab 3-8 which is bent down from the switch-carrying plate II. The upperend of the bag 22 is preferably open, to facilitate emptying, the end being preferably folded and held closed by a clamping device I! which is secured Lo the hook it and acts as a link which permits a swinging movement of the end of the bag as the A flexible tubular member I is provided to connect the ring 25 and the tubular coupling member 29, and is formed of rubber with preformed corrugations II which are considerably wider at the bottom than at the top, as shown in Figs. 2 and 4. The flexible member I may be moulded, if desired, but is preferably formed electrolytically by a process known as the "anode process, the initial shape of the member being preferably that in which it is held when the handle l8, and consequently rod 22 and coupling member 29, are in the intermediate position most frequently occupied during use of the cleaner. The internal diameter of the flexible member I is substantially equal to that of the ring II and the coupling member 29, and it is secured to them by split spring members 42 and II which compress the ends of the member 40 outwardly into annular grooves 44 and 4!, respectively, in

the ring and coupling member.

Upon its outer cylindrical surface the couplingmember 2! is formed with a plurality of bayonet slot grooves 46, preferably three, and a bag clamping ring i1 is adapted to be telescopically engaged upon the coupling member 29, being provided with inwardly directed projections 48 engaging in the bayonet grooves 48. It is preferable that the projections 48, and the correspondbe spaced unequally from each other, so that the parts will register in only one the bag clampin annular flange ll clamp and a. lever tracting such clamp, so that the mouth of the bag 22 may be inserted between the body of the member 41 andv its flange l9 and detachably clamped in place. I

A modified structure for movably supporting the upper end of the rod 33 is shown in Figaro and 7, the yielding spring support being replaced by a sliding support by securing rollers Il'on a -.pintle B2 in apbracket II which is secured to the rod 32, the bracket 53 passing through a slot II in the handle", and the rollers Ii engaging the. inner surface of the handle adjacent such slot. To limit the entry of the bracket II in bag is inflated or deflated. l

2! which engages of channel form is, provided in the handle I I, overlying the rollers Ii and guiding them, and secured in place by lugs II which pass through openings in the handle II and are bent over as shown in Fig. 7.

, In either modification shown, it will be apparcut that the rigid connection between rod 23 and the bag clamping flexure oi the bag 22 upon movement of the handle ll, all of the bending to compensate for various positions of the handle being afforded by the corrugated flexible At the same time, the dust bag 22 may be readily removed or replaced and, upon inflation or deflation, when the cleaner is started or stopped, may change in length without being placed under any considerable endwise tension. The construction permits the use of dust bags formed of material which is inexpensive but of insuiflcient strength to resist the repeated bendings which would occur if the mouth of the bag were connected directly to the cleaner outlet, or in any structure in which the top of the bag is supported directly from the handle so that it is subjected to endwise tension.

the slot 54, a track 55 claims I claim:

1. A coupling and supporting device for movment of a dust filtering bag to a suction cleaner,

comprising a ring adapted to be detachably secured-to the suction cleaner outlet, a tubular coupling member pivotally connected to said ring, a flexible tubular member connecting said ring and 0nd tubular coupling member detachably connected to said flrst coupling member and having means thereon for detachably securing the dust bag thereto.

4. A suction cleaner comprising a body provided with a discharge outlet and having an upwardly extending handle pivoted thereto, a ring said handle, ring and supported at its upper end by said sup- PO 5. A suction cleaner comprising a bodyprovided with a discharge outlet and having an up wardly extending handle pivoted thereto, a ring ring 41 will prevent any connecting member Ill. u

carried by said outlet and pivotally mounted at a point spaced from the pivot of said handle, a flexible tubular member connectingsaid ring and said outlet, an upwardly extending support rigidly connected to said ring, and means yieldably connecting the upper end of said support and said handle.

6. A suction'cleaner comprising vided with a discharge outlet and having an upwardly extending handle pivoted thereto, a ring carried by said outlet and pivotally mounted at a point spaced from the pivot of said handle, a flexible tubular member connecting. said ring and said outlet, a support arm rigidly connectedwith said ring, the upper end of said support handle.

7. A coupling and supporting device for attachment of a dust filtering bag to a suction cleaner, comprising a pair of rings pivotally associated at one edge, and a flexible and extensible tubular member connecting said rings, said flexible member'having a circumferentially extending corrugation therein increasing in depth in both directions from a point adjacent said point or pivotal association of said rings to a point radially more remote therefrom.

8. A flexible member for connecting a dust filtering bag to the outlet or a suction cleaner, comprising a tube of resilient material having straight end portions and formed with a circumand means slidably supporting arm from said ferentially extending corrugation between said end portions, the normal formation of said member when free from strain being such that the end portions of said member are disposed at an angle to each other to form a bend, the radial depth of said corrugation increasing in both directions from a minimum on the inside of said bend to a maximum on the outside or said bend.

9. A detachable coupling and supporting device ter the attachment of a dust filtering bag to the exhaust outlet of a suction cleaner of the type including a nozzle, an exhaust outlet, and suction-creating means therebetween, comprising a pair of rings one of which is adapted to seat upon the exhaust outlet of a suction cleaner, means at one side of said rings for pivotally connecting said rings for movement toward and from each other, and a flexible corrugated tubular member forming an air passageway connectin said rings and adapted to expand and contract upon pivotal movement of said rings, the maximum expansion and contraction taking place on the side or said tubular member spaced a maximum distance from the pivotal axis.

10. A detachable coupling and supporting device for the attachment and movable mounting of a dust filtering bag to and on a suction cleaner of the type including a nozzle, an exhaust outlet, and suction-creating means therebetween, comprising a rigid apertured mounting element haust outlet, a second apertured rigid mounting element adapted to seata dust bag, a corrugated a body probellows-like conduit for air connecting the apertures in said mounting elements, a rigid means connecting said mounting elements for pivotal movement about an axis closely adjacent one side of 'said conduit whereby upon relative pivotal movement of said mounting elements the side of said conduit spaced a maximum distance from said axis receives the greatest expansion and contraction.

11. In a suction cleaner of the type including a nozzle and suction-creating means connected to said nozzle; an exhaust outlet for dirt-laden air, a corrugated bellowslike .conduit connected at one end to said exhaust outlet, bag-mounting means at the opposite end of said conduit, and means pivotally connecting said bag-mounting means to said exhaust outlet for relative movement about an axis above and adjacent said conduit whereby the lower side of said conduit receives maximum expansion and contraction upon the pivotal movement or said bag-mounting means.

12. In a suction cleaner of the type including a nozzle and suction-creating means connected to said nozzle; an exhaust outlet for dirt-laden air, a corrugated flexible bellows-like conduit connected to said exhaust outlet, bag-mounting means at theouter end of said conduit, and means pivotallyconnecting said bag-mounting means to said exhaust outlet for pivotal movement about an axis above and adjacent said conduit whereby the lower side of said conduit receives maxiadapted to be secured to the suction cleaner ex--v mum expansion and contraction upon the pivotal movement of said bag-mounting means to eifect dislodgement of residual foreign material.

13. In a suction cleaner of the type including a nozzle, an exhaust outlet, and suction-creating means therebetween; a dirtfiltering bag and means to connect flexibly said bag to said exhaust outlet, said means comprising a flexible bellows-like conduit interiorly connecting said bag to said exhaust outlet and a rigid pivotal mounting between the ends of said conduit the axis of which lies above said conduit whereby maximum extension and compression takes place .along the lower side of said conduit upon movement of said bag relative to said exhaust outlet. 14. In a suction cleaner of the type including a nozzle, an exhaust outlet, andsuction-creating means therebetween; a dirt-filtering bag having an open mouth at its lower end, a bag ring sealing the mouth of said bag, a pivotal connection between said ring and said exhaust outlet the axis of which extends transversely or said mouth and adjacent the top of said ring, a corrugated bellows-like conduit connecting said ring and said exhaust outlet and positioned below said axis, an operating handle pivotally connected to said cleaner and supporting the upper end of said bag. and means to vary positively the angular position of said ring relative to the exhaust outlet upon the pivotal movement of said handle" relative to said cleaner.

HARRY B. WHII'E.

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