Патент USA US2135927код для вставки
Nov. s, 1938. ' L, B VOORHEES 2,135,927 VACUUM CLEANER Filed Feb. 2'7, 1929 INVENTOR. leonaré’? l/oorizeexs ' ATTORNE .5, Patented Nov. 8, 1938 2,135,927 - UNITED STATES PATENT OFFICE 2,135,927 VACUUM CLEANER Leonard B. Voorhees, Euclid, Ohio, assignor to Air-Way Electric Appliance Corporation, To 7 ledo, Ohio, a corporation of Delaware Application February 27, 1929, Serial No. 343,099 7 Claims. (Cl. 183-51) The present invention relates to vacuum cleaners, and its principal object is to provide an because of the material already collected. As compared with the present bags, my invention improved air ?ltering and dust collecting sys- ’ presents 'the advantages of an increased holding tem for such cleaners; this system contemplating capacity obtained without material detriment to 5 the use of a bag consisting of a pocket which I the e?iciency of the cleaner; the entrapped dirt 5 'functions primarily as a. dust receiver, a pocket which functions primarily as an air-?lter, and an intermediate inlet opening, such opening being so arranged or positioned relatively to such 10 pockets that the dust and dirt separated from the initially introduced air will remain practically undisturbed by the air currents developed during the subsequent operation of the machine.' At present, the air ?ltering and dust collect 15 ing bags of portable vacuum cleaners are usually provided with a bottom opening through which the dust-laden air enters, and an adjacent pocket in which the separated dust collects. In time, and especially if the collecting bag is too infre 20 quently emptied, the smallness of the dust-con taining pocket will force the accumulated mate rial to amass in such close proximity to the inlet opening that the entrance of additional air will be impeded and the entrapped dust and dirt after having once settled remains practically quiescent and is not agitated or disturbed by the incoming air; bag leakage due to impact pulver ization of the collected material is avoided; ac cumulations contiguous to the inlet opening are 10 eliminated; and ?nally, satisfactory operation of the cleaner over longer periods of time is in sured. , _ To the accomplishment of the foregoing and related ends, said invention, then, consists of the 15 means hereinafter fully described and particu larly pointed out in the claims; the annexed drawing and the following description .setting forth in detailcertain structure embodying the invention, such disclosed means constituting, 20 however, but one of various mechanical forms ' in which the principle of the invention mav be used. In said annexed drawing: Fig. l-is a side elevational view of a vacuum 25 ’ 25 kept-in almost continuous suspension. Such ac- cumulations contiguous to the inlet opening or cleaner embodying the present improvements; in surrounding relation to its collapsible tube Fig. 2 is a transverse section which was taken valve are detrimental, as on the one hand they along the plane indicated by the line 2—2 of result in impairing the ef?ciency of the suction Fig. 1; and Fig. 3 is a perspective view of a de-' tached paper liner of the type particularly showrn 30 30 system and as on the other hand they result in the impactive pulverization of the collected dirt, such ?rst effect becoming apparent when the ma chine fails to clean satisfactorily and such sec ond eifect becoming apparent when fine particles 35 of ‘dust begin to escape through the meshes or pores of the bag. If the collecting bag is made of cloth, or if such bag is openable, the above mentioned effects combine to make necessary an all too frequent emptying of the bag contents, 40 and if the bag is of the permanently closed paper variety, such effects make necessary its too fre quent renewal or replacement. My invention, with the object of avoiding the objectionable consequence of present bag ar 45 rangements, contemplates providing an improved bag having a combined ?ltering and collecting pocket located out of the path of the currents of entering air and‘ in downwardly spaced rela tion'to a second and preferably somewhat larger 50 pocket which desirably functions exclusively as a ?lter, it being'intended that such ?rst-named pocket shall accumulate the dust and dirt sep arated from the intermediately incoming air by such second named pocket and such parts of the 55' ?rst-named pocket as are not inactive as filters in the preceding ?gures. , For purposes of illustration, my invention is here shown in association with a standard vac uum cleaner which consists ofa wheeled ?oor tool II), a lower handle I I, an upper handle I2, an 35 intervening valve casing l3, a fan chamber l4, and a wheel supported motor housing IS. A rotary valve I6 is so arranged/in the valve casing l3 that air may be drawn ,through either the handle II or the handle ii, the former of suchv 40 handles communicating with the ?oor tool l0 and the latter of such handles being adapted for connection with accessory cleaning devices, such as brushes, nozzles, etc. A fan casing discharge pipe I1 is adapted for directing the dust-laden 45 air sucked in through either of the handles into a con?ned porous paper collecting receptacle which functions to remove the entrained solid material by ?ltering the carrying air through its porous Walls. -; 50 When embodied in a machine of the type just described, my invention contemplates extending the discharge pipe I1 by means of a suitable tube l8, such tube making an air-tight connection with a discharge pipe through a ferrule or the 55 9,185,997 entering the pocket 21 of the bag 28; the dust like II and having .its distal end attached as by a clamp 20 to the handle 12. Associated with the tube 18 is an air ?ltering and dust entrapplng bearing air strikes the de?ector," and is thereby given a turn in the direction‘ of‘the pocket 2|, ‘ the solid component of the entering stream ?nally receptacle 2!, this receptacle desirably compris coming to rest in such pocket, and, the air‘in' the ing an outer sustaining fabric bag 22 and an inner _ porous paper bag 28, the former acting to con meantime ?ltering through the'pores or meshes ' of the inner bag and thus escaping into the outer atmosphere. Before any‘ considerable quantity ?ne and protect the paper liner, and the latter (as above stated) acting to ?lter out the com - mingled dust "and permit the puri?ed~ air to of dust and dirt has been collected, the entire ,escape into the atmosphere. The bag 21, as best _ inner surface of the liner functions as a ?lter, 10 shown in Fig. 3, is desirably constituted 0! a suit-‘ but as the quantity of separated material in stitched paper sheet creases and the lower pocket- accumulates addi tional dust and dirt, the ?ltering effectiveness of ' 24, one ‘side or edge of ' the enclosure so formed ‘having been cut away or removed to form an inlet the walls de?ning the collecting pocket becomes 15 neck or mouth 25 and a tube relief or set-back progressively less and correspondingly the walls 15 edge 26. The upper ‘end of the bag or envelope of the upper pocket become more active, their so produced is thus somewhat wider than its larger ~area and‘ comparative freedom from ac lower end, but from a functional point of view cumulations enabling them to eiiiciently perform their intended functions under the increased such is not necessarily the case. From an in spectionvof the drawing, it wlllbe apparent that load thus imposed. 'The inner bag'may, if de 20 the inlet mouth 25 is arranged in a longitudinal sired, be provided with an opening through which edge of the bag 22 and between the two more or the collected material can be emptied, but pref less distinct pockets? and 28, the former being erably this bag has no such opening, the entire advantageously somewhat larger than the latter liner and itsv accumulations being'removed as a unit from the outer bag and burned or otherwise 26 so that an adequate ?lte'ring area ‘will be pre ' sented even when the accomulations of dust and dlsposedof, a new liner being then inserted in the ' ably folded and dirt become elfective to diminish the ?ltering ca- -. manner hereinbefore explained. ' ) pacity of the lower walls de?ningthe collecting - ' Other modes of applying the principle of my pocket. . . ' invention may be'employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated ‘by any of the following claims or the equivalent of such stated means be employed. a The ,outer fabric bag 22 in general has the same shape as the enclosed paper bag 23. but its upper edge 29 is desirably formed with a slit or opening 30, such slit permitting of the insertion I_ therefore particularly point out and distinctly and removal of paper liners and having its lips or edges reinforced by suitable bars or strips ii. The inner sides of the edges of the slit ll are‘ claim as my invention: - - \ 1.. In a vacuum cleaner, a collecting bag having adapted for closing overa ?ap I2, and their van enlarged upper portion and a reduced lower * inner end provided_,with a curved de?ector or baiile 16 and its outer end formed into a con rent in the direction oi’ said reduced lower portion. , 2. In a vacuum cleaner, a collecting bag having‘ 45 outer sides are provided with a plurality of eyes portion, a delivery conduitlying alongside said 33, such ?ap being intended for folding over reduced portion and entering said bag intermedi the inclosed paper liner and such eyes being ately oi’ said enlarged and reduced portions, and 40 40 intended for attaching the assembled bag unit ' a'de?ector associated with the terminal of said ‘to the cleaner’s handle. Secured within the .delivery conduit interiorly of said enlarged por ' mouth 34 of the bag 22 is a tube 35 which has its tion,'and adapted to direct the incoming air cur-' a ?ltering pocket and a collecting pocket, an oifset hector 31, such de?ector‘ serving to .direct the in the wall of said bag intermediately of said pockets, a delivery conduit lying along the wall oi.’ said bag and passing through said wall in said onset‘, and a de?ector associated with the ‘0 terminal of said delivery conduit. incoming air downwardly or towards or in the general direction°of the collecting pocket of the ' inner liner, and such connector serving to a?ord 50 a part with which the clamp I! may ooact when ‘the bag~assembly is being arranged in operative 3. In a vacuum cleaner, an integral air ?lterlns relation to the tube ll. When a paper liner is to beinserted within its and dust collecting bag one end portion of which con?ning bag, the slit It is first opened, and then ‘ comprises a ?ltering pocket and the opposite end portion of which comprises a dust collecting “ .55. such liner is positioned, and its neck is slid over ' pocket, an onset in the side edge of the bag inter or telescoped with the de?ector I‘, ‘such neck being held in such relation by means of a resilient ‘- mediate said pockets, and a- delivery conduitv ex or elastic band or the like. These operations tending along the outside of the collecting pocket being completed, the ?ap 32 is then folded over and entering said ?ltering pocket through ‘said the. upper edge of the collecting pocket of “the onset, its discharge end directed away from the w collecting pocket. inner, bag and the lips of the slit in the outer 4. In a vacuum cleaner, an integral air ?ltering and dust collecting bag one end portion of which ' , bag are brought together. when assembled, the filtering and collecting unit may be connected comprises a ?ltering pocket and the opposite end portion of which comprises a dust collecting e5 pocket, an onset in the’ side edge of the bag with the cleaner by slipping the eyes 33 and I! 85 over the respective’ tube and handle-hooks ll‘ and ll, and byoperating the ‘clamp 38 to secure the connector 31 to the tube ll. The machine as so prepared, is ready foroperation in the usual manner. Accordingly, the motor may be_ started 70 and the cleaner moved about over the pile of av ' intermediate said pockets, formed with a mouth, - and a delivery conduit extending along the‘out side of the collecting pocket and detachably con nected to said mouth to discharge away from 70 rug or otherwiseo employed'lto collect dust and the collecting pocket, into said ?ltering pocket. dirt, such material being entrained in the cur rents of air developed by the fan, and then'car ‘ 5. In a vacuum cleaner, an integral air ?ltering‘ ried through various -»: a: eways, including the and dust collecting bag one end portion of which comprises a ?ltering pocket and the oppo?te end bore of thetube' ll into the receptacle 2|, On portion of which comprises a collecting pocket, ‘an 75 3 2,135,927 o?set in the side edge of the bag intermediate dust collector comprising an inner porous paper said‘ pockets, formed with a mouth, and a de livery conduit detachably connected to said mouth and positioned to discharge away from said col lecting pocket into said ?ltering pocket. 6. In a vacuum cleaner, an integral air ?lter ing and dust collecting bag of porous paper one 10 bag and an outer bag of relatively strong porous material enclosing- and supporting said inner bag, each of said bags having one side edge composed of- nonaligned edge portions separated by an off-_ set, the end portions of the bags on one side of said o?sets comprising ?ltering pockets and the‘. end portion of which comprises a ?ltering pocket end portionson the opposite side of said offset and the opposite end portion of which comprises. comprising collecting pockets, a delivery tube a collecting pocket, an o?set in the side edge of lying along the outside of the edge portion of the the bag intermediate said pockets, formed with offset edge of the outer bag adjacent the collect a mouth, an outer bag of relatively strong porous ing pocket, entering the outer bag through the material, enclosing and sustaining said paper bag, offset therein, and communicating with the inner and a delivery conduit detachably connected to bag through said offset, and means carried by said mouth and positioned to direct its discharge the non-aligned edge portions of the outer bag 15' away from said collecting pocket into the ?ltering for supporting said bag from said tube and from pocket. the cleaner handle, respectively. 7. In a vacuum cleaner having a handle, a . LEONARD B. VOORHEES.