US2076699A - Vacuum cleaner - Google Patents

Description

April 13, 1937. y Q LQBROWN, JR 2,076,699 A* VACUUM kCLEANER Filed DSC. 19, 935

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ATTORNEY.

. Patented- Alpr.y 13, 1937 Y,UNWED-STATES t 2,i 'z6,699 M VACUUM CLEANER" i* charieinymn nmwmn., oni Greenwich, conm,

` assigner to Electrolux Corporation. Dover, Del., f

'a'corporation'of'pelaware A n n f Aplicationnecembeis,1935, seria1No.55,`1'zs fr 14.-'giants.;` (orgie-z) n j f y, n y ,The `stamping v I4 is formed with an opening e My invention `relates to cleaners and more `particularly to an improved means for supev porting a motor 4or' motor-fan unit withinA the casingof a vacuum cleaner.v

5 One of the objects of my invention is to provide a supporting ymeans which admits of ready insertion and removal-lof thefmotor unitfrom the casing 4without requiring the tightening or loosen# ing of4 boltsor the like, Another object of my 0 invention is .to provide a support having the above` characteristics and also providing afcertain' degree of resiliencyin the mounting y i Further objects and advantages of my inven` tion will be apparent from thefollowing descrip v tion considered in connection with `the accom-l panying .drawingAv which forms VaV part -of lthisV specification and of which: i v y i 1 i Fig. 1 is a cross-sectional. view-'oi'avacuurn'v cleaner embodying myinvention;

Fig.,2 is a cross-sectional'-viewtaken on the line2-2 ofFlg.1; n Fig. 3 isa view on afsomewhat'larger scale showinga portion of the'device illustrated `'in Fig. 2;, .l y

shown'inFig. 3; andl i .l

.Fig. 5 isa cross-sectional view takenv onlth'e line 5+5'of1ig.3;' f: f

Referring .more particularly to Fig.- 1, reference character I0designates generally acasing which may comprise an upper stamping I2 and a' lower stamping I4 suitably joined together, as by welding, along the seam I6. The Ainterior -of casing I0 is divided into a'dust bag compartment 22, a motor compartment 24, and a'dis-` charge compartment 26, by partitions I8 and 20.

The end of casingIO bounding compartment 22 is formed with a dust bag openingl 28,` whichmay be closed by means of a coverf30 secured to the main part of the casing by any suitable means. Cover 30 is provided with athreaded opening 32 adapted to receive one end ofy a exible lhose 34.

The other ,end of the hosev may-be attached to a rigid tubular member 36 having a cleaning implement, such as -a suction nozzle.38, secured .to the other end thereof.' Av dust bagring 40'is provided with a iiange 42 adapted to be clamped in place in opening 28 by means ofcover member 30.` 1A

dustbag 44 of cloth or other material pervious Figl is an Velevational view-'of thestructure with respect to air but impervious with respect 54 inalignment with` motory compartment 24,

which opening may be closed by means of a cover plate 56 removably secured in vplace by meansmofbolts 56. vOpening54 is suiilciently large so that a motor-fanunit, generally designated by refer,

ence character 59, may be inserted and removed therethrough. This unit includes spacedringsy and 62 -joine'd by means of ya cylindricalcasef 64.`

Supported from therings andwithin jthe case-by meansyof a-pluralityof conical springs 6.6 is an electric motor 68 having-fa shaftlpupon' which are mounted fan rotors z '12.l These #rotors-are enclosed within afanhousing `'I4 suitably secured to` ring 62;;

Motor-fan unit supported within chamber'.

24 by meansrof abutmentsl 16 andexpansible and contractible structures 18. "llhe'abutmentsy may consist .of rubber pieces suitably secured to the' motor-fan unit and receivable Within depressions Whilevthese iabutnrientsy vhave la certain` amount of resiliency, they are substantially non-deformable:

Structure I8 includesa hollow cylinderV 82 pivot-f allysecuredfby means cfa ypin :84, to anbracket 86 secured to the interior of lower stamping v I4. Reciprocably mounted :Within-cylinder. 82' is a l cylinder or pin88 whichmay'be'made of molded Opposite walls. of the :cylinder may vbe shoulders 96 formed on `thepin to limit' outward movementfofv the latter. formed .with recesses 98` which? are adaptedffto receive theouter ends of .pins88 when the motor- Rings 160 and 462fare l fanaunit is mounted in position within chamber" structures 18 are' disposed around the unit-in two :three-point suspensionsare provided for the unit 'adjacent 'either endof the motor 68,- which isfby farl the kheaviest part of the unit. If desired',v ,a vsingle three-point suspension could'be-locate'd Yin aplane passing through'the'center ofigravity -oftheunitf i i f flexible tubing -I04 may be securedztol flanges |00' r and; |02 for providing aniair-tight connection between partition I8 andfan'ihousing.' Ring .601

and partition 20 are formed with similariflanges alignment :with each of rings 60 and 62. Hence 4 formedin'. the vtop of the upper stampingy I2. ,20

` 40in1theoppositedirectionl. i

V'm *1U-the Supportinestructure nl y winch-may be connected by means oi' ilexibletubf ing |06, thus providing an air-tight connection between the ringand the partition.

The end 'wall of casing Il bounding exhaust chamber 26 is provided with a threaded outlet `following manner:` n Y s Cover plate 56 being removed. the motor-fan 1.5 unit may be inserteduthroughropening'jl. if

structures 18 being pivotedto the positionshown in dot and dash lines in 11ig. 2.` The tubings l and |00 may be secured eithery to the flanges on the partitions or to the ilanges formed onithefV 20 motor-fan unit before the latter is inserted and,

due to the flexibility ofthey tubing; the unit may u be' inserted'and the tubing then 'placed over the'- cooperat'ing flanges. -lWhen theunit is thusin placeI the members 18 may be pivoted-to the po- `r sitions shown in P13242 by forcing the pins Il into the cylinders "and thenreleasing the-pins,y

y vwherebyvthey will engage 'withinf the recesses "Il:

formed' in'ringsIf-and 62a. The springs IlV are- Of'vfsumcien Strengthto torce the nxotor-faxunity upwardly against the alznutments Il which latter' arethus pressed vinto contact withlthej-recessesf 80.: inthe casing. Brackets-"l0 formed with f stops-Illwhich limit pivotal movementoi' the cylinders 'I8 so` that 'theweightl oi' the motor-fan unit cannot pivot the cylinders beyondthevsposis` tion shown .in Fig; 2.` The center lines of the pins VStand-cylinder1 'lt-passzbelow lthe center of gravity ofthe motor unit. whereby the'weightot the unitfhasno tendencyto pivot thecylinders u (Due-tof the fact that abutments 1li and pins 'N are! received in. recesses; axial f displacement of the .unitis prevented."Asfa matter of fact, abutments 16 yalone are sumcientto -preventluch movementv and thus relieve` the structure not. "stralnpgww f Y In orderto kremove `the1motorfan `unit,`it kis 'only :necessary to zretract-the pins' 'Il l intothe cylinder Il .far y'enough f'softhat the pins are released from-.the recesse'sn; whereuponthe kcylinders--and-fpins maybe -fpivoted to the position shownin dot andjdash-.linesin Fig. 2. c g

`In vr operation thezr'otation--` ofl the vi'an rotors by the'electric motor causes@ air to be vdrawn 1n mroughnozzlesa tubumr member-u and hose M 'to the interior, ofthe dust bag.v Any'dust -carried along bythis air is deposited within the dusty bag, while theair passesthrough the materialpof-the bag, and through ftubing: IIN-@to the i'an. p "From the fan, the air is dischargedthrough and around the -motoxfand` through :tubing ill.- to compartment 28, from which it escapesl lto the atmosphere throughv outlet I 0l. f Rotationzof s the motor and ianl sets up vibration which, 'if lnot dampened, would resultin lIsn-:excessiveamount n prevented from reaching the casing It by means oi Athe rubber abutments Illand the springs l0 f zThus it willfbe seen .that the means.v provided forsupportingfthe motor-fan unit not only'per-V ',mitsreadyinsertion and removal of the unitbut -also'aids inthe absorptionl of vibration yproduced `475 bystheoperationof 1 n f 'e omega The motor-fan unitn maybe mserteefln the appended claims viewed in the light` o! the prior art. v Y ,Y v

l motor member; annik man: vfor: removably :mount- 4said motor member insaid casing member includingf iresiliently fexpendilale and .contractable structure pivotally to one oi said members and pivotable into engagementwith the othery of `said membersg'sald'ltructure'andsthe other oi' said members Abeing donned Iwitlrefje'o-`w operating recess and f #for preventingv vpivoting oi' said structxu'eafwhilefin motor'membersand fmeansztor removably ing said motor-.member caein'gimembe'r ina. cluding resiliently;exlmndible'v structurev pivotally-connected to saidcasin'g mem; ber' and,y pivotableinto; andmutfco! t with a recessformelulin:saidmet'urlnemher`- 1 u Vis Inv a vacuum xc( ner, zsgcasmgs. g v motor-member, `and for removably and.` resiliently expa'ndihlae;filml.l .s A

structure pivotally-connected of said melia-. :f bers and fpivotable==intemementv-wlthtbef` f otherfof ylscidxmexnberstor holdingsaid members in Contact with slid abutment.

While I have shown and described one 'more orlessI specific embodiment of my inventionit is .tofbe understood that modications thereof fall within its scope, which isy tok be limited only by including resiliently expandible andcontractable structure Divotally connected to one of saidmemi bers4 and-pivotable linto` andi out o! engagement* with the `othergoi ssaidlmembersr 1 5. Inv Aa vacuum rcinnentasnng. frnlesshnriiejl motor member, ter removably s ing said motor memberin said casing memberini-' cludinl al1-abutment resiliently expandibleend contractante-mettre pivotally connected to/,oneJ-e! i pivotable into engagementzwitha-theothe members vfor holdingnla'iiiVK members 1in; .with said abutment. 'ma sbummtbemsreeeimf n recesses formedm-mm'mml I l the others is 'f 6. In a vacuum 'cleanergaeasirufa n andmeans i'or removablyfmmting .nid unit in' said casing .including a ilrst :member pivotably connected .t0 .'Iid jinglfnd i l resiliently carried by saidrstfmember;

Vbers being 'pivotablefintoi-and-outjo!'englgemelit n.7. In `n.. vacuum cleaner#A calmgia motor and means for removably" `laid ln saidcasing'including L resiiientlydeiormablemeanspiwtally tofssxa casing, snd=,s;pxvntabielnco. t

witngmd zumtlror n 8.' In a vacuum clement Ind-"means for removably; um m y saidcasing including shallow lllvlilbli n ynonsdefqms l able means betweensaidunit and f 9. In a vacuum cleaner, a casing, a motor-unit, and means for removably mounting said unit in said casing including an abutment between said casing and said unit, a hollow member pivotally secured to said casing, a pin reciprocally mounted in said member, and a spring within said member urging said pin outwardly into engagement with said unit, thereby pressing said unit against said abutment.

10. In a vacuum cleaner, a casing, a motor uni and means for removably mounting said unit in a horizontal position in said casing including an abutment between said casing and the upper part of said unit and a pair of resiliently expandible and contractable structures pivotally connected to said casing and disposed symmetrically around the periphery of said motor unit with respect to said abutment, said structure being pivotable into engagement with the lower part of said motor unit, and means for limiting pivotal movement of said structures towards the bottom of said unit, said last mentioned means being so positionedthat when said structures are in contact therewith, the center lines of said structures pass below the center of gravity of said unit.

11. In a vacuum cleaner, a casing, a motor unit,

and means for removably mounting said unit in said casing including an abutment between said unit and said casing, a plurality of hollow members pivotally secured to said casing, a pin reciprocably mounted in each member, and a spring Within each member urging said pin outwardly into engagement with said unit.

12. In a vacuum cleaner, a casing including a substantially flat bottom wall, means dening a motor compartment within said casing, said bottom wall being formed with an opening communicating with said motor compartment, a motor unit adapted to be inserted through said opening, and

means for mounting said unit within said compartment including resiliently expandible and contractable structure pivotally secured to said casing and pivotable into and out of engagement with said unit.

13. In a vacuum cleaner, a casing including a substantially flat bottom wall, means defining a motor compartment within said casing, said bottom wall being formed with an opening communicating with said motor compartment, a motor unit adapted to be inserted through said opening, and means for mounting said unit within said compartment including resiliently expandible and contractable structure pivotally secured to said casing adjacent to said opening, said structure being pivotable out of the path traversed by said unit for insertion of the latter into said compartment and being pivotable into engagement with said unit after the latter has been inserted.

14. In a vacuum cleaner, a casing including a substantially iiat bottom wall, means dening a motor compartment within said casing, said bottom wall being formed with an opening communieating with said compartment, a motor unit adapted to be inserted through said opening, and means for mounting said unit within said compartment including an abutment between the upper part of said unit and said casing and resiliently expandible and contractable structure plvotally secured to said casing adjacent to said opening, said structure being pivotable out of the path traversed by said unit for insertion of the latter into said compartment and being pivotable into engagement with said unit after the latter has been inserted to press said unit against said abutment. CHARLES LYMAN BROWN. Jl. I

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