US2740494A - Vacuum cleaners - Google Patents

Description

April 3, 1956 4 4 s, BUDA 2,740,494

VACUUM CLEANERS Filed July 29, 1953 2 Sheets-Sheet l JNVENTOR.

April 3, 1956 D 2,740,494

VACUUM CLEANERS Filed July 29, 1953 2 Sheets-Sheet 2 llllllllll IN V EN TOR.

alvatore Budd VACUUM CLEANERS Salvatore Buda, Brooklyn, N. Y., assignor, by direct and mesue assignments, to Strapavac Corporation, Brooklyn, N. Y., sa corporation of New York Application June 29,1953, SelialNo. 364,570

4 Claims. (Cl. 183-67) The present invention relates particularly to an improvement in vacuum cleaners, more particularly "to an improvement in a combination vacuurn'cleaner'and blower.

'This vacuum cleaner is particularly designed to maxiniize the efli'ciency of the suction motor as it *draws air through the fabric walls of the *dust bag, "thus creating a stronger vacuum in the bag. This is accomp'li'sh'ed by positioning the suction motor in relation "to the "bag so that air is drawn "through the "bag evenly 'over'its entire fabric wall area. It is further an object ofthe present invention'to provide a lightweight cleaner particularly suitable forportablejuse having unimproved constructionand relation of partsa'ndwhich may readily 'bedisma'ntled for repairs.

A further advantage in 'the pres'cutinventionmot only comes fro'm'the fact that the filter is separate from the dust but; through which du'st laden air is initially 'd-rawn, but also from the fact that the bottom face of-the iilter 'close to the surface of the 'bag is covered and the 'air in the space surrounding the bag enters the filter through its four sides permitting the dust to settle in the bottom of the container to the extent that the 'dust may pass through-the walls of the bag. .Another feature of the present invention is that the air flow through the filter is uniform on all -side's, and "there is no tendency for one side to 'cl'o'g up and forcethe other sides'todo Jall of the work. A further advantage .is that the "filter is centrally .placed with referencetothe suction fan of the motor 'and in the space in the container half way 'alongthe length ot'thebag. I

"These and 'other "objects of "thepre'sent invention-will "be'more apparent'from the following description when considered in connection with the accompanying drawings'inwhich:

Figure 1 is a sideelevation of ithe cleaner.

Figure 2.is a cross section of the cleaner taken along the 1irfe'2*'2ofFigure '1.

Figure 3 is a cross section of the cleaner taken along the line 33 of Figure 2.

Figure 4 is a cross section of the cleaner taken along the line 4-4 of Figure 3.

Figure 5 is a plan view of the filter box as viewed from the top, and

Figure 6 is a fragmentary cross section along the line 6-6 of Figure 5.

In this invention, it is preferable that light weight metal such as aluminum be used in the fabrication of the housing.

Referring particularly to the drawings, there is provided a housing 1 having a lower rectangular shaped section 2 with a cylindrical section 3 positioned symmetrically on the center of the top 12 of the rectangular section. Within the rectangular section 2 having side walls 13 and 15, a top and bottom 12 and 14 respectively, and ends 17 and 18, is provided a removable dust bag 4 having fabric walls 7 with the usual degree of porosity for such bags. This bag is preferably cylindrical in shape and extends substantially the length of Fatented Apr. 3, 195 6 2 the rectangular section .2. It is secured :at its open end 5 .to .a.metal cover 6 which is shaped to jfit .over the open .end 17 of the rectangular section of the housing. A collar 8 enclosing an opening 9 in the cover 6 is ,provided for securing to the cover 6 the flexible or accordion pleated hose 10 through which dirt and dust are drawn 'into the bag 4. The cylindrical walls 7 of the bag are preferably supported symmetrically within the rectangular section 2 of the housing lbyfour r,e-- raining strips '11 extending lengthwise of the "bag on the outer surface thereof and secured "between'the ends .17 and 18 of the section 2. The cover 6 to which the 'bag 4 is secured is itself secured over the open .end 17 of the section 2 by a pair of clamps '19 positioned on opposite side walls .12 and 14 of the rectangular sec- ,tion 2 of the housing. .A gasket .20 may be provided on the inside of the cover .6 shaped to .fit around the opening '8 in the end '17 on the rectangular portion of the housing. I

'Thebag 4;at its end '5 is provided witha flange which is .between the inner surface cover 6 and the outer surface of :the annular end '17 of the rectangular section 2.

The clamping members 19 clamp the flange of the bag with the gasket 2% tightly against the end 1'7 of the section 2 so that the-bag may be readily removed .for cleaning purposes simply by ltaking oif the outer cover.

Suction is provided by a motor 2'1 positi0-ned within the cylindrical .sectionla which draws air through a filter arrangement 22 fitting below an opening .23 in the side wall 12 of the "lower section 2. The motor '21 -is secured within the cylinder section '53 by a substantially circular co'llar 2 i'having parallel'flanged ends 25 through which 'is threaded a securing nut .26 which may be adjusted tohol'd the motor tightly within the-collar. The collar "has outwardly extending base flange at its bottom "end forming an L shape'd cross section which maydhe welded or'bolted to the top .wall12 of the lower .section2'about1he opening'23. "The'basefflangelis cut 'away .along sections 27 toward the ends or the collar to permit'the ends 'to'be drawn together. The inner surface 28 of this collar may beknurled to ,pr,ovide a more "suitable friction cont-actwith the motor base. The filter arangement22 ccmpriscsa filter box 29 closed :onfits lower side'3tl with a plurality of.openings"31 onlitsffo'ur sides 32 .and its top .33. The box .itself'is 'filledwith a suitable "filter material34 such as "fibreglass. The box 'is removably secured .in the rectangular section 2 'beneathtthe opening 23' by parall1 side flanges '35 and 3.6, each having aniinwafdlyflanged lower edge37 and38 respectively 'andwhich lis secured on either side (if the opening '23 within the section? 'Toprovide maximum circulation through the openings 31, the sides of each flange 35 and 36 have longitudinally extending slots 39 and 40 respectively. The end of each side flange 35 and 36 farthest from the open end 17 of the rectangular section is bent inwardly to form a stop 42 for the filter box 29. The flanges 35 and 36 may be headed or grooved at 41 for securely holding the filter box 29 in place. The cylinder section 3 may be removably secured over the motor by a retainer nut 43 threaded through the top of the cylinder section 3 into a boss 61 formed on the top of the motor. The inside of this cylinder section may be lined with an acoustic material 55 to deaden the vibrations of the motor. A gasket 44 may be secured around the lower edge of the cylinder section 3 to insure a tight fit against therectangul'ar section of the housing. Another gasket 62 is positioned between the base of the motor case .21 and the top wall 12 around the opening 23. This gasket not only prevents vibration and noise of the motor but also prevents air from leaking out before it is drawn in the suction element which may be at the bottom of the motor in the position 70. The lower section of the suction motor housing is provided with openings 63 through which the filtered air sucked up by the motor fan at the bottom of the suction motor will pass outward into the chamber 64 formed between the cylindrical section 3 and the motor housing. A plurality of openings 45 are circumferentially disposed about the walls of the cylinder section 3 to permit passage of air drawn through the filter from inside the cylinder section 2.

These openings may be closed by means of a shutter device 46 in which event the apparatus will act as a blower with air drawn through the filter opening being forced rapidly through the blower opening 47 in the wall of the cylinder section 3. The shutter device comprises an annular sheet 48 with openings 52, the sleeve being slidingly secured over the openings 45 by upper and lower flange members 49 and 50 respectively. An operating handle 51 extending through a horizontal slot in the cylinder section wall and secured to the sleeve 48 .is provided to open and close the shutter device by moving the openings 52 into and out of alignment with the openings 45. i

As this entire construction is extremely simple and light weight, it may be provided with a harness arrangement 53 secured to the rectangular section 2 by a plurality of metal cross straps 54. The harness itself may be of any conventional arrangement suitable for securing the cleaner to the back of an individual.

Having now described my invention I claim:-

1. A vacuum cleaner having an elongated housing with a dust laden air intake at one end, an air porous dust bag extending substantially the length of the housing, means spacing said 'bag from the housing walls, said dust bag having an opening with the edge thereof secured around said air intake, an air outlet opening on the side of said housing, a motor housing and suction motor with a suction fan mounted over said air outlet opening, a filter support positioned about said air outlet having means for removably securing a filter over said air outlet in said elongated housing, a filter positioned in said last mentioned means comprising a casing having a plurality of openings in the sides and top and being enclosed on the bottom adjacent said dust bag. I

2. A vacuum cleaner having an elongated housing with a dust laden air intake at one end, an air porous dust bag extending substantially the length of the housing but spaced from the walls thereof having an opening with the edge thereof secured around said air intake, an air outlet opening on the side of said housig, a suction motor with a suction fan mounted over said air outlet opening, a cylindrical motor housing secured over said motor, said motor housing having a plurality of openings, an annular sleeve having corresponding openings slidingly secured to the inside of said motor housing over said openings, 21 filter support having a filter therein mounted in said elongated housing extending over said air outlet, said filter being exposed on the sides and top and covered on the bottom adjacent said dust bag. 7

3. A vacuum cleaner having an elongated housing with a dust laden air intake at one end, an air porous dust bag extending substantially the length of the housing having an opening secured around said air intake, guide means longitudinal of and secured within said elongated housing for spacing said bag from the walls of said elongated housing, an air outlet opening on the side of said housing, a motor housing and suction motor with a suction fan mounted over said air outlet opening, a filter support having a filter therein mounted in said elongated housing extending over said air outlet, said filter 'being exposed on the sides and top and covered on the bottom adjacent said dust bag. 4. Aavacuunr cleaner having an elongated housing with a dust laden air intake at one end, an air porous dust :bag extending substantially thelength of the hous' ing but spaced from the Walls thereof having an opening with the edge thereof secured around said air intake, an air outlet opening on the side of said housing, a suction motor with a suction fan, means removably securing said motor over said opening comprising an open collar fitting around the end of the motor, means securing the edgeof the collar adjacent the outlet opening to the housing said collar having sections adjacent the open ends thereof unsecured tothe housing, bolt means acting between said sections for tightening the collar about said motor, a filter support having a filter therein mounted in said elongated housing extending over said .air outlet, said filter being exposed on the sides and. top and covered on the bottom adjacent said dust .bag.

References Cited in the file ofthis patent UNITED STATES PATENTS 110,976 Fergerson July 28, 1914 1,739,082 Simmons et a1 Dec. 10, 1929 12,008,067 iFaber July 16, 1935 7 2,064,587 Carlstedt Dec. 15,1936 2,158,109 De Remer et al. May 16, 1939 2,273,210 Lowther et al Feb. 17,, 1942 2,276,844 Holm-Hansen Mar. 17, 1942 2,335,428 Lofgren Nov. 30, 1943 2,438,133. Sparklin Mar. 23, 1948 2,439,182 Nufier et a1 Apr. 6, 1948 FOREIGN PATENTS France May 8,

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