US2347919A - Vacuum cleaner - Google Patents

Description

May 2, 1944. G. E.'LOFGREN 2,347,919

VACUUM CLEANER Filed Jan. 31, 1941 2 Sheets-Sheet l ATTORNEY.

May 2, 1944. ELQFGREN 2,347,919

VACUUM CLEANER Fil ed Jan. 31, 1941 2 Sheets-Sheet 2 I I 59 22 60 61 53 5a 1; 55 63 64 50 1Z9. 5. Ii?

Patented May 2, 1944 VACUUM CLEANER Gustaf Einar Lofgren, Riverside, Conn., assignor to Electrolux Corporation, Dover, Del., a corporation of Delaware Application January 31, 1941, Serial No. 376,760

2 Claims.

My invention relates to vacuum cleaners and more especially to those of the inclosed bag type. Still more particularly, it relates to an improved means for removably securing a closure member to the casing of such a vacuum cleaner.

Further objects and advantages of my invention will be apparent from the following description considered in connection with the accompanying drawings, which form a part of this specification and of which: f

Fig. 1 is a side view, partially in cross section, of a vacuum cleaner embodying my invention.

Fig. 2 is an end view, looking from the left of the vacuum cleaner shown in Fig. 1.

Fig. 3 is a cross-sectional view on an enlarged scale taken on the line 3-3 of Fig. 2,

Fig. 4 is a cross-sectional view on'an enlarged scale taken on the line 4-4 of- Fig. 1; and

. Fig. 5 is a view, partially broken away, of the inner side of a closure member illustrated in the other figures.

Referring to the drawings, reference character l designates the casing of a vacuum cleaner. This casing is preferably made of sheet metal and has a substantially cylindrical form. Supported within the vacuum cleaner in any suitable manner is a motor-fan .unit including an electric motor II and a centrifugal fan [2. The casing is adapted to be supported horizontally on a horizontal surface by means of runners l3 which are secured thereto by brackets or the like i4. An end cap I is secured to the casing I0 and is provided with an exhaust opening IS. A carrying handle I! is secured to the upper part of the' casing near the rear end thereof so that the center of the handle is approximately over the center of gravity of the unit. A generally U- shaped channel member [8 is likewise secured to the upper part of the casing 10 and extends from the forward end of the handle to the front end of the casing.

Secured within the casing adjacent to its front end is a circular channel l9. which is L-shaped in cross section. A ring 20 is secured to the channel l9 and is formed with an inturned flange 2| which extendswithin the channel. The outer periphery of the ring 20 is formed with a U-shaped cross section, as is shown at 22, so as to embrace the end of the cylindrical casing in. The ring 20 provides a seat for a dust bag ring 23 which has a radially extending flange 24 provided with agasket 25 which is adapted to be clamped between the ring 20 and a seat 26 formed by a substantially circular plate 21 which constitutes a portion erally by reference character '28. The open mouth of a dust bag 66 is secured to ring 23 and occupies the space within the casing between the f front end of the latter and the motor-fan unit.

Also constituting a portion of the closure member 28 is a dish-shaped member 29, the rim of which is secured in any suitable manner to the edge of plate 21. Plate 21 and member 29 are formed with aligned openings between which extends a hollow member 30, preferably ofBakelite or similar material. Member 39 is formed with a plurality of lugs 3| which are engagedby an inturned lip 32 on the member 29, 'while'a gasket 33 may beinterposed between the inner end of member 30 and the plate 21 in order to provide an airtight seal. As shown, the member 29 and plate 21 aresecured together with the member 30 and gasket 33 clamped therebetween by means of bolts 34. If desired, a metallic liner 35 may be placed within member 30 and formed with an inturned flange 36. A hose or the like 31 may be connected to this inlet opening by means of a coupling member 38, known per se, provided with springpressed latches which engage the flange 36.

Secured to the outside of the member 29 at the center of the upper portion thereof is a hook-like member 40. This member is covered and substantially concealed from view by means of a channel 4| which may be fastened to the member 29 in any suitable manner, as by means of ears 39 which extend through openings formed in member 29; The contour and location of channel 4! is such that, when the closure member 28 is in place, this channel forms a continuationof the channel member l8 on the casing l9. Secured to the casing I0 underneath the channel member I8 is a hook-like member 42 which is adapted to be to the opposite side of member 29. As, shown, members 44 are secured in place by means of rivets. Members 44 are substantially oncealed from View by means of a channel 45 secured to the front of member 29 by means of ears 46 extending through apertures 41. As shown particularly in of a removable closure member, designated gen- Fig- 2, channel 45 extends all the way across the One of these members is shown in Fig. 4 and a similar member is secured front' ot the closure member and is provided with circularrecess- 48 to accommodate the. upperpor tion ortmemberllll' i Thends-oflthe web Of'ChaDr;

nel-flfare recessed; :asis shownat 49, in order to expose" the hooked end of each :member N, and r the web extendsinwardlyyasshdwn at 65 so as to 5.

contact :or be close toxmember: 44''; i

Opposite sides of casing i adjacent to. channel I ll *arexi'o'rmed #with depressions 50, in each of- The. end-rot bracket 1 5 l 'whieh-i is adj acent to-thew end ot thecasingis formed with anzapertured lug;-v il-whichcarries'anpinzili Pivoted ontthispinis a lever 55' inthe'wIo'rm ;o= azU channel,= the: web A portion :of which is partially cutaway; asis indi cated at: 561 Pivotally' secured :to theaflanges-"ot lever il bya'means ota :pin 51 isia latch-members 58" which has-a" hookedasend 59. adapted to engage the'hook shaped-resilient member'llu'.

. Channel-'members; 6|! are. secured on r the.- sides of casing i0 "#in alignment. with the channel 45 i on-the=#closure'- misc 1 as: to: form a: continuation thereof 1 1 when w the: closuremember is: inplace.

- Channelifllmay" be secured. in .place by -means-- of bolts: Blwhichiextendithrough channel. l9 to engage apnut or the. like 62'; The headof bolt 6 I is concealed 'from view by 'means of latch 58 l 1 when the partsare'inassembled'position; Chan nel il 'is recessed at. 83 in order to accommodate lever Handlatch '58 andample space is pro vided at 1 the. right-handend of *tlre zrecess" tor in sertion of the: finger 'undemeath the web portion of lever iiz Chieflrfor'the-sake or appearance.

ashallow dish-like memberil may be secured a n in the bottom'ofldepressionilb lt' is believed that the operation of the abovedescribed devicewill be largely apparent. If it is desired to remove the, closuremember-28, the.

parts being in'the. position shown in the figures, the operatonplaces; a :fihgerunden the" end 01' .1 each oithe levers 55 and-pivots them-outwardly irom'thecasing. Thiscausesthe pins 51 to swing. in arcs around =the= respective 'pinswfl 'and thus:

to move' the hooked Jends 'il' oti the latches-El to .45 leases them-iromtthe resilient members and the'left, as viewediin Fig; 4. This in turn retheportionsafiifof theschannel assuresthat the latches" move completely out of engagement with the members 44. When the closure member is so released, itdoesvnotfall away from the casing, butremains suspended by virtue of the en gagement-of the hook meinbers'lfl'and 42; How'- ever, it maybe easily removed by lifting it and at the same time moving it' slightly to the left,

as viewed in the'flguresv sion.-- Consequently; the closure member. "is tightly, held against-the gasket 25 of the dust bat! ring.: As will 'berobserved, the'axis of pin is: closer :to the cleaner-.:.casing than :is the axis slot; pin a 540 J Consequently; 'theforce I imposed on the latch-member -58': by the distorted resilient memberiT-tends'to pivot-the lever Win a counter-clockwise: direction: about the pivot 5|.

However, the: member'cannot'i pivot in this directiomuinasmuch'as it acontacts member, and

consequently this force has no tendency to pivot the lever-in a clockwise -direction:to"release the latch 58il-ln otherxwords; if. a straight lin'e. is drawnz from thepoint ofacontact between the" .shookedaend 59 with the-resilient member 44 and the. :axis of ="pin1i1; I such linev will pass "between the axis-. oflpin .54 and thecasing of the cleaner. While 'I have shown'and described one more or less-:speciflcembodiment of .my invention, it is tobe understood that this has been done for purposesrofillustration only and the scope of my invention is-not:tosbe-limited thereby, but is to be: determined from-the appended claims.

What'Iclaimisr l. Ina vaeuumcleanena.hollow'casinghaving an'opening, a :removable'closure member for said opening,:a' lever-on'ei-ther side 'of said casing,

each-v lever having one end f pivotally connected to'said casing :adjacentito-said opening, a latch rm'emberpivotedon each lever ata point spaced from said-end, a-z resilient member secured to either sideof saidclosure--member, means for securingwoiie end of each resilient member to saidclosure' member, the other end-tot each re- ;silient: memberbeing hook-shaped, each resilient member being so formed that its' central portion isflbowed away from the closuremernber: and the hook-shaped end th'ereof issurged into slidable contact with said closure member, said hookshaped member being engageable by. the respective latchmembers to secure said closure member in:place,land a channel "extending across the front oi.- said I closure member and substantially eoveringsaicl resilientmembers; said channel being disposed close to :saidresilient members adjacentto the points of contact or said resilient memberswith said closure member;

In a vacuumcleaner, a hollow casing having an opening, a removable closure member for said openingfa lever oneitherrsiclev of said casing, each lever having one endpivotally connected to said casing adjacent to said opening, a latch Whenthe; closure member has beenremoved, the bag may be taken out for the purpose of emptying it, andthen replaced; The-closure member is then placed with the member liengaging member 42; The closure member-'28: is

suspended-thereby in position with the resilient members in alignment with'the corresponding latches and levers 551 This relieves the hands from supporting the closure member 28 and trees them to engage levers The levers ii are pivoted toward the cleaner casing. At the same time, the latch members 581 are pressed inwardly so that the hooks 59 thereon will engage the resilient members 44; The. arrangement of. the

parts is such that, when the parts are in the position illustrated in Fig. 4, latch member 58 has been'drawnto the right, as viewed in this figure, suihcientlyso as to distort somewhatthe member 44, which is hence placed under tenmember pivoted oneach lever at a point spaced from said end, a resilient'member on'either side of said closure member, means-for securing one end ofi-each resilient member to said'closure member, the other end ofeach resilient member being hook-shaped, each resilient member being so'form'ed that its central'portion is bowed away from the closure member-"and 'the hook-shaped end thereof is urged into slidable contact with said closure member, said hook-shaped ends beingengageable by the respective latch members to secure saidclosure member in place, and a

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