US2015171A - Suction cleaner - Google Patents

Description

-s1` f.24,1935. H BWHITE v 2,015,111

SUGTION CLEANER Filed Aug. 3, 1933 INVENTOR "cf Har/y W/n'fe ATTORNEY v Patented jfsleptr- U-lSu'rizDf| STATES PATENT oFFc- `A i sUc'rIoN CLEANER Harry zwhite; Canton, lOhio, assigner to4 The d Hoover Company, ANorth Canton, Ohio, a coi'-` A poration of Ohio 4Application August 3, 1933, Serial No. 68.3,419 I 11 olainie. (on. 15-1333) lIt is'an object of the present invention' to pro.-v vide a new and improved adjustable brush construction in a rotary agitator for a suction y cleaner. -It is another object to provide-in a rotary agitator for a suction cleaner, a 'reversible brush which is designed to yco-operate with' its.

seat in the agitator body `so that its height above 15 the agitator surfaceis changed when the brush is .reversed en'd for end. Still another object is the provision. in' a rotary agitator for a suction cleanenof a screw-held brush which extendsV to dierent heightsy above the surface v'of the agi` 'tator ywhen the brush' is. reversed end .for end,

Theseand other more specific objects will appear upon reading the' `following specification and claims and upon considering in connection therev with .the'attachedv drawing to which'they relate. ,25 4 In the drawing, in which a preferred embodiment ofthe invention is disclosed:

Figure 1 is aside view,.partly in section, o fa modern suction cleanerwith the agitator con- E. sti-acted in accordance with the present invention --embodied therein; 1 v l Figure 2 'is a'sideelevation, partly insection, .of the agitator constructed.y in accordance vwith the present invention with the brushes positloned in-the low positions;

Figure 3 is a section through one of the brush seats in the agitator with the brush positioned in the high position; a

Figure 4 is a partial section through the agil tator looking in the direction ofthe arrows upon.

Figure 3; Figure 6 is a view in perspective of a brushV ent invention removed from' the agitator. l

'fhe modern suction cleaner incorporates both suction and positive beating' means. The posie Ative beating means are normally provided-in the a rigid surfacecontacting element andaremovable brush o r brushes. The rigid element is not affected bywear in its contact with a surface covering and so requires' no adjust-ment.- 4.The

- brush elements. however, wear down so that they require adjustment. :rule brush elements de element constructed in accordance with the presform of a rotaryagitator which includes both not extend as far radially as the .rigid beating `elements', they -fail to accomplish theirfunction.

In the present invention anew brush element isprovided which co-operates in a new and novel manner with' its: seat in thel agitator body so 5 thatafter the brush has been used inthe agitator) for'a time and thejlengthofthe bristles has been decreased through wear, it is possible 4to reverse' the brush end for end iny its-'seat in the agitator resulting in a greater eztension ofv the 10- brush bristles beyond the said surface through;

positioning the back Voi! thebrush higherin its i' seat.

Referring again to the drawing a modern suction cleaner is shown comprising a nozzle, I 15 which is interiorlyconnected to the fan chamber 2. AA rotaryfan l3, drivenby -an'unshown motor within the motor c asing, creates a're'- l :duced pressure within the @fan chamber-whichyfunctions to draw air between thealips'i ands-6 20 ntofthe .nozzle I, through, the l/fanfichamben-l and exhaust it ,through fthe' exhaustj.outlet;` 1 into a detachable dust bag 8., The :cleanerisf linbyably supported upon front andrear wheelsl and, I0= respectively, there being provided a pivoted handle, I I b'y `which the-operatorumay-propel themachine. `Within the nozzle -i andflwsitioned ;=so..as... to contact the surface `covering;1. between thelips Sand E is-positionedafrotarmagitator .indicated-"generally by 4reference character Y i2. 30 Agitator.- Il comprises an' elongatedpylindrical body I3 which isi provided substantially centrally ofits-length-witha reduced 4 portion I4 which functions as a pulley toreceive thexdrivingbeltv AI5 connected tothe pulley I6 at .the Vlower end 35 ofd the;y driving- -motor' shaft. End cups |1, "n

which `are mounted upon the longitudinally ,ex-

- v .tending through supporting lshaft-i9 which ex`40 FigureA 5 is 'a 'section upon theline `5---5 of tends l completely through :the cylindricalv body.-

each seats a plate member 2li which is anged at its periphery-and overlies the endof the body I3 to. function las a threadA guard and prevent 45 -theaccumulation of foreign matter about the 'height above the agitator body-and impart to the surface covering, in theoperation of the ma- Vchine, e. positive beating action( Theirheight is 55 not aifectedby wear and they extend `throughout their lifetosubstantially thesameradial distance beyond the normal surface of the agitator body I3. s

To co-operate with the positive beating elements 2|, 2| brushes Il', I! are provided which comprise rigid backs Il, Il in which are mounted brush bristles, il. Itis desirable that the bristles v24 extend above the normal surface of the agitator body to aheight whichissubstan equal to the height of-the beater elements Il il. It is also desirable, however, that the bristle length be suflciently great thatlreasonable elurev and -bendingispossibles1loinlurethisflexibllityit Aisnecessarytolnou'ntthexlgidlmck'ofthebrush below the normal surface of the agitator body. l'hisisdonelnopenbottomseats2l.2l. The

sides of these seats are formed by folding inwardlythewallofthebodyiladi'acentthereto. The endsareformedtoreceiveandseattheendsof thebrushbackil. Theinneror'pulleyendof eachseatisprovidedbyaninsertedstamping orendmemberwhichissuitablysecuredinplace asby welding'itssidel totheelongated sides of the seat. lach endmember comprises an inwardly extendingbottomshoulderorledge ILa second shoulder orlsdge positionedthsrea'bove andoflesserandlong'itudinallength.anupper shculderlt; Ablockotresilientmaterialsuchas rubberiscarriedbytheendmembenthe shoulder Il extending theiethlolllh. V,

Theiterendofeachseatllisform'edby'an inwardlyextending shoulder Il formed on a metallicplatellcarriedbytheinnersideoftheend cup |1. Shoulder il is positioned radially outside of shoulder 21 at the opposite end of the" der shoulder 2l, At the opposite end of the brush shoulder E rests upon the supporting shoulder Il,therelationbetweenshoulders 21 andnbeing suchthat the brush isparallel to the longitudinal axis of the agitata.

v Referring to Figure 3 in particular it is. seen that the brush has been reversed in its seat and shoulder D now rests upon outer shoulder 3l. As shoulderD is lower on the brush back than shoulder E it is clear that the brush at that end of the s back extends further beyond the surface of the agitator-than before. As the shoulder D is lower on the brush back than shoulder E it is clear that the brush bristles at the outer end of the agitator extend beyond their first position relative to the l0 agitator surface a distance which is equal tothe diiference in height between the shoulder D and' the shoulder E. At the inner end of the brush it is seen that the lowest shoulder C is now supported by the supporting shoulder lll and the end 15 of the brush back underlies the shoulder 2l. As

'shoulder C is lower than shoulder'D on the brush back 'by exactly the same distance that shoulder D is lower than shoulder E it is apparent that theinnerendofthebrushbristleshasbeenraisedo abovetheagitator surfaeetoadistance equalto that found at the outer end. Thebrushisthereforeinitshighorworn position.

To secure the brush withinits seat in either of its two positions a screw Il is provided at the 25 outer end of each brush seat which is threaded into the agitator body thickened at that point byaguard member!! whichisformed integrally thereon. Ateachendofthebrushbackis formedanoutwardly anddownwardly inclined30 recessedshoulderl'which.whenthebrushback ispositionedintheseat.partiallyunderliesthe endofthescrew. Thesurfaceofeachshmilder Pisinclinedsothatasthe screw advances downwardlyin the agitator into contact withthe face 85 l'the'brushbackwillbeforcedbyacamaction inwardlyandtowardthecenteroftheagitator' body. The opposite end of the brush back is forced into contact with the resilient rubber pad attheinnerendofthessatwhichresistinglyso holds the brushagainstthescrew andinplace.

With the brushpositioned inits low position it isseenthattheinnerendofthebrushbackcontacts thepadubetweentheshoulder l1 andthe shoulder. Withthebackinits upperorwornss position,asshowninllgure3,itisseenthatthe brush backcontactsthepadbothaboveandbelow the shoulder Il. the brush back abovethe shouldernbeingprovidedwitharecessedporticn indicated bythereference character Il which accommodates the inwardlyextendingshoulderil. Toremovethebrushfromitsseatitisonly necessarytounscrewthescrewllsothatthe brush backcanbemoved longitudinally outward sothsttheinnerendthereofisdisengagedfromo under an overlying shoulder. With the brush in the low or new position this overlying shoulder istheshoulderll. Withthebrushinthehll'hor .worn position itis the'shoulderft.

I claim:

l. In a rotary agitator for a suction cleaner. a body, an elongated seat in said body. a brush in cluding a rigid back having bristles therein, said seat overhanging one end of said back, means resiliently urging said backjtoward the opposite ss end of said seat, and a manually adjustable screw carried by said body and adaptedto contact said' back at a-point spaced from said endand at an angle to oppose the movement of said brush by. said means and prevent the outward displacement of said brush, said screw being adjus to a position to permit the. sliding of said thereunder to permit lth'e disengagement of the opposite end thereof.

2. In a rotary agitator for a suction cleaner, a 76 and extended into said seat into contact with a cam surface on said back at the opposite endthereof'to force said backunder the overhanging portion of said seat and oppose its outward dis placement at said point'of contact.

' 3. In a rotary agitator for a' suctiorr cleaner, a.r body, an elongatedl seat in said body, a brush including a rigid back tvhaving bristles therein, said brush reversibly seating in said seat, said seat being formed to overhang said brush at one end, downwardly facing shoulders at different heights on said back adapted to support said brush in said seat, said seat being provided withupwardly facing shoulders at spaced points adapted to. cooperate with the shoulders on said back, and manually adjustable locking means securing said' back in said seat and forcing it under said overhnging Portion of said sea.t.

4. In a rotary agitator for a suction cleaner, a body, an elongated seat in said body,a brush including a rigid back having bristles therein, said. brush reversibly seating. 'in said seat, Asaid seat `overhanging said brush stone end, inwardly fac- -ing shoulders at diiferentheights on said back at the ends thereof, outwardly facing shoulders of different heights at the ends of said seat adapted to cooperate with said first-'mentioned shoulders to support said back at dierent heights in the reversed positions, and!l a' manually adjustable locking member at one end of said seat preventing the displacement of said back outwardly from said seat and from under the overhanging portion thereof.

5. In a rotary agitator for a suction cleaner, a

l`body, an elongatedseat in said body, abrush includmg a rigid back having bristles therein, said back being of vdill'erenteiiective heights at its opposite-ends, means at onev end of said seat at different heights adapted to overlie and prevent the outward displacement from said seat of either end of said back, means at different heights in said seat adapted to support-said back'at its end-s, and a manually rotatable screw overlying the end of said 'backspaced from said`overlying means exertinga fox-cesto secure said back in said seat and under said overlying means. y V- 6.1In a rotary agitator for a suction cleaner, a

bodyan elongated seat in said body, a brush i y memdinga rigiaback having busses therein, said Y' adjustable means carried by Said body yand exseat being-formed with longitudinally spaced outwardly suportingshoulders at dinerent heights rein, sai k being formed with spaced wardly faclngsupporting shoulders aty different heights thereon, said back. being reversi# ble in said seat, different pairs of shoulders cooperating to positionfsaid back inA the reversed` positions, stationary means at one end of said brushto overlie the back and prevent its dis-` placement at that-point inelth r positiqn, and

tendedinto said seat into contactwith said back securing said back under said stationary means'J and preventing its displacement from said seat at its point of contact therewith, characterized by the fact that said manually adjustable means are.

movable to a position to permit Asaid back to move from under said stationary means. 1 g ,7, Ina rotary agitator for a suction cleaner, a body, an elongated seat in said body, a brush including a rigid back having bristles therein, said seat being formed with spaced outwardly. facing thereon, saidback being reversible in said seat,

different pairs of yshoulders cooperating to position said back in the reversed positions, stationary means at one end, of said brush to overlie the back and prevent its displacement at that point in either position, and adjustable means carried by said .body and extended into said seat into contact with said back securing said back under said stationary means and preventing its displacement from said seat at its point of contact therewith, characterized by the fact that said manually adjustable means comprises a screw positioned at the end of said back which is adjustable to a position out of contact with said back thereby permitting said back to be moved to disengage it from under said sts'.-` tionary means.

8. In a rotary agitator for a suction cleaner, abody, an elongated seat in said body, a brush including a rigid baci: having bristlesy therein, outwardly facing supporting shoulders at the opposite ends of said seatatl diderent heights therein, 25

inwardly facing supporting shoulders at the. opposite ends of said lback separated in height thereon by -a distance equal to .that separating the shoulders on said seat, a second shoulder at one end of said brush separated in height from 30 4said first-mentioned shoulder vat that end by V shoulders extending farther into said seat than the other, vertically'and longitudinally spacedy shouldersat one end of said back, a shoulder at the opposite end of said back having a height 'midway between said shoulders at the one end of said back, the shoulderson said back being arranged to contact selectively the shoulders on. said seat, characterized by the fact that the upper shoulder omsaid back supports one end thereof in one position when opposite .the short seat shoulder while the lower shoulder supports the same end in the reversed position when opposite the long`seat shoulder, means being provided to prevent the outward displacement of said back '55 from said seat in both positions. 10.A`removable brushl element for a suction cleaner agitator comprising a rigid back having bristles therein, said back being prdvided with a downwardlyfacing supporting shoulder at one end, a downwardly facing supporting shoulder on the opposite end of said back at a-higherl level thereon, avtliird downwardly facing shoulder on 1 said baclf'positioned between ,the tw`o ilrst-mentioned shoulders at alower level than said tlrst- '65 mentionedshoulder, characterized by the fact that the' level of said first-mentioned shoulderis midway between the levels of the remaining shoulders.

11. In a rotary agixtor for a suction cleaner, 70

a body, anl elonga seat in said body, a brush including-'a rigidl back having bristles therein, brush-positioning means vertically Aand longitudinally spaced on said back, brush-'posip tioning means vertically and longitudinally 5 4 t 9,015,171 l l spaced in seid seat, ssidbrushbeinz reversibly avez-binstimeoppositeemiotloidiasrhssidstspositioned in seid seat, ssidbrush-positioninztionsry means end seid manuell! Overlble remeons selectively cooperatinzto position seid tnetoble memberooopentinl'to prevent disbnuhstdiiierentheightsinsoidbodyinthere, plooementotsddbnlhtmmsoidseotondto versed positions, characterized in that-stationery, hold said bmah-positionim 'moons on said bock .6 memsoverlieoneendotssidbrushbackinssid\ondonsddleotineooperlver;lsitionship seat. e. manually operable retxi'actable member BARR Wm.

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