US2649925A - Suction cleaner - Google Patents

Description

Aug, 25, 51953 n.3.; Tscp-lUoY SUCTION CLEANER 3 Sheets-Shee't l Filed June e', l1952 y. TU N Nh R wx. m mTff M APW. d

Aug. 25, 1953 D. B. Tsl-IUDY v l 2,349,925

sucrrIoN CLEANER v Filed June e, 1952 sh g 'ss1w*etV '2 l INVENTOR. Donld Tschuz-y ATTORNEY.

Aug. 25, 1953 D. B.1scHUDY l A:2,649,925

' sUcTIoN CLEANER Filed June e, 1952 sheets-sheet '3 (F. -4 l INVENTOR." v Donald B.Tschudy A Bmg/W w,

TTORNE Y.

Patented Aug. 25, 1953 Donald B. Tschudx, Canton, Ohio; assi-guar to The-Hoover Company',v North.- Canton,l Shing, aA

corporation of. Ohio Application Jme'fld, 1952; SierialN'o. 29E-20' in; claims. (01. 18s- 36) This invention relates.K to suction cleanersl and more-particularly to an adapter arrangiamenti for connectingv a double walled clotliand paperi filter bag: assembly Yto the exhaust outlet of' an upright on--the-oor typesuetion cleaner.

It old in the art toprovide a cloth proteotive envelope orl bag over the lil-ter bag proper when the latter is made of acomparatively weak paper lter stock. However, when the upper end orhv thecloth bag* is' attachedy to thehandleof the cleaner and' a flexible joint is provided be.- tween the bag clamp' proper andl the exhaust-nozzle" it has been found necessarytoprovidesome means'ofl protecting` the paper lterbagl from abrasion byf its continuall movementr relative to the bag asr the cleaner is propelled about.

In such air-arrangement the dirt: collects in the paper fllterfbag at the lower bottom side and when the handle issrnovodito storage position .the pape-r bagels# liablesto rupture and empty the Adirt intothe protectivev covering.

In the past, aseparate/cloth. girdle hasbeen provided-between tliepaperL bag' and the Acloth bag'v to supportv the 'paper `bag and' prevent: abrasion between it and the-cloth bag; asi the handle is'moved up andl downL iur-propelling theo-leaner and to prevent the paper bag fromtearing'when the handle-is moved to storage positi'orny According"v to the presen-t invention the Ycloth girdle isA replaced byfvupper andloWer flexible -z flaps or shoes secu-red to the clamp.V Which-.holds the paper bag to the adapter, which naps extend beyond` the clam-p asubstantialdistance andi lie between the cloth envelope andthe paper -lter bag'to protectthe latter against abrasionas well as against abrupt flexure'- when the handle is p laced in storage posi-tiem According to anotherwobject o? the prese-nt2 in vention the upper halfof the'bagk clamping means is rigid with the propelling handle; and an adapter pilot tube and` the lower half of the clamping means are pivotedy tothe upper clamp member Iorra common axis so that the pilot tube can be separated from the upper' clamp' member and' the lower clampA member can tze-separated from the,A pilot.V` tube; in attachingad removing the paper filter bagj. v

Other objects and" advantages-"of the` present invention will become apparent asv the description. proceeds when takenr in connection withL the accompanying drawings inW which-z Figure 12 is a view ofthe rearfend ofI- a suction cl 'e'aner showingY the present invention; applied thereto and partly ingsectionA to show the details of construction;

Figure is asectional view of" the cleaner of Fig. l takenfon line Zf-Z oi Fig. l with the cloth envelope removed;

Figure? is a perspective exploded view of the bag clamp of the present i-nventiontwith the'pro.- tecti-ng apsory shoes removed; and Y Figure #lk is aside view of the. cleaner oi! Fig. -1 showingI the handle in storage position as the paper lter bag thelprocess of beingA applied to the adapter.

Referringto the drawinga the reference nuameral I0 represents the main frame-of a suction cleaner mounted for' ambulatory movement on rear-Wheels Il and frontwheels (not shown).

The suction cleaner as such is.. old'. in the art and. in general comprises a. downwardly facing suction nozzle connected by a suction passageway. to the suction-side of a, motor driven fan which exhausts in the exhaust passage. [2.

In operation the. carpet is drawnA upwardly against the. nozzle by the. suction produced by the, f an ,l where it is4 agitated by a movable agitator in the nozzle whereby dust-and. dirtv is removedfrom the carpet by the'oor'nbined, action of.` the air passing. through the carpet and! the action of the agitator invibrating the carpet. A The. dirtladen air is drawn through the Suctionnozzle and passageway, through the farreye and is discharged. from exhaust 'passage I2 into a.4 filter bag assembly which will' be described presently.

The cleaner body lll' is propelled about' by a propelling handle lf3, pivoted to theexhaust passage |72.- at. lll. The handle .|31 is held i'n upward storage. position and. in an intermediate position f by` a spring pressed latch detent'f l5 coacti'ng with slots i6 and I1! respectively inahandlesector'fli. The arcs. [19. and'. ZU.' of. sector |'8' determine the high and low operating positions respectively for thehandle i3..

An` upper clampfmember ZLI. isfrigi'dl'yy secured tothe handle .Y laf in, any suitable. manner such as that shown. Pivoted. to the inner or lower end of the upper clamp member 2| by pin`22fis a lower clampmember 23 and-an adapter pilot. tube 2.4,. the innerory lowerend of the latter being connected tothe exhaust flange '25: by a4 flexible bellows: 2li.y Pivoted to the lower clamp.- member 23 are a.. pair of; latches; Z1. having notches 28 which coactwith abutments 29,V extending;` out- Wardly from the sides of the upper clamp mem;- ber! I; to.. hold: the-V twoicla'mp.: members; in clamping; engagement with. the adapter. pilot tube; 24.

A c1cth.bag1or,envelope 30;.V o vthe air pervious 'nonsltering type, has, the upper side of itsiower open end detachably secured by snap fasteners 32 to the arc-shaped portion 3l of the upper clamp member 2l. The lower side of the bottom end of the bag 36 normally encircles the arcshaped portion 33 of the lower clamp member 23 and is held in that position by an upwardly slidable Zipper type slidable fastener 34. The upper end of the bag 30 is secured to the handle I3 near its upper end as shown in Fig. 4.

Suitably secured to the inner surfaces of the arc-shaped portions 3l and 33 of clamp members 2l and 23 are flexible fiaps or shoes 35 and 36 respectively. The flaps 35 and 36 extend a sub'- stantial distance beyond the upper orouter .ends of the clamp members 2l and 23 and beyond the end of the adapter pilot tube 24. As shown the lower flap 36 is longer than the upper flap ,35 for a purpose which will presently appear.V

The lower open end 31 of a paper filter bagf bend when the handle is moved to storage posi- Y tion and stiff enough to be self-sustaining as shown in Fig. 4.

Operation In applying the filter assembly the handle i3 is moved to storage position as shown in Fig. 4.

The upper end of the cloth bag 33 is attached to the handle i3 near its upper end as shown in Fig. 4 and the upper side of the lower end of bag 3D attached to the clamp 2l by fasteners 32, the slide fastener 34 being open.

The lower open bias cut end 31 of the paper filter bag 38 is then slid over the adapter pilot tube 24. The lower clamp member 23 is then pivoted upwardly vcarrying with it the adapter pilot tube 24 and bag 33 whereby the lower end of the bag 38 will be gripped between the arcshaped portions 3l and 33 of clamps 2l and 23 and the adapter pilot tube 2li. The latches 21 may then be pivoted clockwise to engage the notches 28 ovei` the pins 29 to hold the clamp in engagement with bag 38. The lower side of bag 30 may then be wrapped about the lower clamp 23 and the slide fastener 34 closed.

The bag 38 is preferably of the disposable type which may be discarded periodically as dirt arccumulates therein. The arrangement of the present invention is particularly adapted for facilitating the removal of disposable paper filter bags.

The handle is moved to storage position as shown in Fig. 4 and the slide fastener lid-opened. The top portion of the paper bag 38 is removed from the envelope 36 and placed on the floor to the rear of the cleaner and the dirt which has collected worked downwardly away from the pilot tube 24. The latches 21 are then opened and the parts moved downwardly as shown in Fig. 4 to release the end 31 of bag 38 from the pilot tube 24 whereby the dirt filled bag may be discarded and replaced by a clean one as previously described.

The dirt normally collects in the bottom lower side of bag 38. For that reason the lower ap 36 is made longer than the upper one so that it will support the paper bag 38 and the'dirt therein when the handle is moved to storage position and prevent the paper bag from rupturing. The lower flap 36 also prevents the paper bag from being flexed too abruptly which also prevents it from rupturing.

While I have shown but a single embodiment of my invention it is to be understood that that embodiment isto be taken as illustrative only and not in a limiting sense. Ido-not wish to be limited to the particular structure shown and described but to include all equivalent variations thereof Aexcept as limited by the scope of the claims.

I claim:

y1. In an ambulant suction cleaner having an exhaust outlet at the rear thereof, a propelling handle pivoted to the cleaner adjacent said exhaust outlet and extending upwardly and rearwardly'therefrom, bag clamping means attached to said handle above and to the rear of said outlet, said clamping lmeans. including a pilot tube and a clamp surrounding the same, means for flexibly connecting said pilot tube to said exhaust outlet, a paper filter bag having an open lower end clamped between said pilot tube and clamp, a cloth bag envelope having its upper end attached to saidpropeliing handle and its lower end attached to the exterior oi said clamping means and flexible flap means attached to said clamp and extending .a substantial distance beyond theend of said pilot tube between said paper filter bag and said cloth envelope.

2. In a suction cleaner according to claim 1 in which said clamp includes an upper clamp member secured to said handle and a lower clamp member pivoted to said upper clamp member and in which said pilot tube is alsorpivoted to said upper clamp member so as to lie between said upper and lower clamp members. Y

3. In a suctionycieaner according to claim 2 in which said upper and l. lower clamp members include arcuate portions vadapted to closely embrace said pilot tube when in closed position and latch means pivoted to said lower clamp member engageable with means on said upper clamp member for holding said clamp members in closed position.

4. In a suction cleaner according to claim 2 in which said cloth envelope is provided with a slidable fastener on its lower side whereby it may be opened to expose Said paper bag and said clamping means. v

5. In a suction cleaner according to claim 2 in which said nap meansincludes upper and lower flaps securedto said upper and lower -ciamp members respectively. 1

6. In a suction cleaner according to claim 5 in which said lower flap extends beyond said pilot tube a distance greater than said upper flap.

7. In an ambulant suction cleaner having an eXhaustoutlet at the` reary thereof, a vpropelling handle pivoted vto the .cleaner adjacent to said exhaust outletand extending upwardly and rearwardly therefrom, an upper bag clamp rigidly secured tovsaid handle above and to the rear of said exhaustoutlet, a pilot tube and a lower bag clamp pivoted to said upper bag clamp on a common axis in such manner that said pilot tube lies between saidupperand lower clamp' members and said pilot tube may be moved away from said upper bag `clamp and said lower bag clamp may be moved away from said pilot tube whereby the lower open end of a filter bag may be clamped between said upper and lower bag clamps and said pilot tube and means for flexibly connecting 5 the lower end of said pilot tube to said exhaust outlet.

8. In a. suction cleaner according to claim l in which the lower open end of a cloth envelope is detachably 'secured to the outside of said upper bag clarnfp and surrounds said lower bag clamp and in which the lower side of the cloth envelope is provided: with a slidable fastener to expose the Illter ba "and the upper and lower bag clamps.

9. Invl 'agsuction cleaner according to claim 8 including jupper and lower flexible flaps secured to said vupper and lower bag clamps respectively and extending upwardly and rearwardly a substantial distance beyond the outer end of said pilot tubebetween said filter and cloth envelope.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 2,089,232 Wells Aug'. 10, 1937 2,123,912 Replogle July 19, 1938 2,260,222 Hahn Oct. 21, 1941 2,566,275 White A11-g. 28, 1951

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