US1507271A - Suction cleaner - Google Patents

Description

Sept 2 y I A. C. BENNETT SUCT'IOH 01.5mm

Filed Sent. 23, 1920 2 Sheba-hoot 2 fizz '5 6'- INVENTOR.

ASHLY 6. BENNETT. wh /M ATTORNEYS new and useful Patented Sept. 2, 1924.

UNITED STATES 1,507,211 PATENT OFFICE.

S q ASHLEY C. BENNETT, OF MINNEAPOLIS, MINNESOTA.

SUCTION CLEANER.

Application filed September 28, 1920. Serial No. 412,282.

To all whom it may concern;

Be it known that I, AsHLnY. C. Bnnmn'r, a citizen of the "United fitates residing at Minneapolis, in the county-of liennepm and State of Minnesota, have invented certain- Improvements in Suction- Cleaners, of which the following is a speci- My invention relates to suctioncleaners,

and has for an object. the provision of a I novel form of suction cleaner adapted to be i moved over floors for cleaning carpets,'ru and the like. An object in particular is t e :provision of a device of this character which embodies a centrifugal cyclone dust collectoperated character adapted to be readily moved over "floors or other surfaces and in which the dust :and dirt are collected without going through the fan, and without the employment of screens and bags.

The full objectsand advantages of my invention will appear in connection with the detailed description thereof, andthe novel features embodied in my inventive idea will be particularly pointed out in the claims.

. In the accompanying drawings which illustrate the application of my invention in one form,-

Fig. 1 is a side elevational view ;,'of my suction cleaner.- Fig. 2 is a top plan view thereof. Fig. 3 is a view similar to Fig. l but partly in vertical sectionto show the interior construction of the deviw. 'Fig, 4 is a view :in section onthe line 4+4: of p 3 looking in th'e'direction of the arrows; ig. 5 is a fragmentary view of a portion. ofan auxiliary fan. x v 1 As illustrated, my cleanerincludesa 1116- tor casing 10 for containing a suitable electric motor, a primary fan casin 12, and an air cleaner. casing 14. These .t ree casings for convenience may be made separately and secured together in suitable manner" as by bolts 16. A- primary fan 18 in the casing 12' is secured to the motor shaft 20, and to this shaft at the rear of the primary fan is secured a SBCOIIdBJg fan 22 which .will 'be' referred to later. i pivotally mounted in openings through opposite sides of the casing- 14 and are prevented from becoming disengaged by any suitable means such as. washer pieces 25. These pipe members extend forwardly and unite to form a single pipe member. 27 which terminates in an elongated suction head 28. On the member 27 are lugs 30 and 32 through whichextend bolts 34 and 36"which are held frictionally in the lugs by means of nuts. The bolts 34 and 36 are provided with rearward extensions 38 and 40 upon which wheels 42 and 44 are rotatably mounted. The extensions 38 and 40 are connected by. a

rod 46 so that when the bolts 34 and 36 are turned, the two wheels will be raised or lowered in unison and the position of the suction, head with relation to the surface to be cleaned may thus be regulated. As best shown in F igs. 3 and 4, the pipe members 24 and 26 communicate with troughs 48 and 50 arranged helically within the casing 1% so as to provide helical passageways which are closed at'their ends into which the members 24 and'26 lead, and which dischar e tangentially at stheir open ends at 52 an two troughs 48 and 50 extend preferably about one-fourth of the distance around the inner surface of the casing and helical ribs 55 are placed in'thegaps between the two troughs.v Abafiie plate 56' is sup centrically within the casing an in spaced relation in front of the rear wall thereof by means of" a su port 58 so as toprevnt reversal of direc on of air current at the cen- The air cleaner casing communicates 0 through a slot'filin the bottom of the casmg with a.- sealed chamber underneath in which is adapted .tobe placed a receptacle or drawer 62. The margin of the casing at the incoming side of the slot is preferably turned downwardly as shown at 64 to aid in. the discharge of dirtand dust into the drawer. To permit removal of the drawer 62 from the"sealed chamber, ,a hinged door 66 is provided at the rearof the latter, this door being normally held closed to make the chamber airtight by means of a catchfiS. A casterwheel 70 for supporting the rear of: this device isprovided, and this caster wheel is preferably mounted upon thev door 66.

The secondary fan 22, previously-referred .to, is provided with spaced blades 72 extending'froni its hub to an annular rim-'74.

I ,From theouter circumference of this rim pe members 24 and 26'areextend a plurality of small blades 76 inclined at an angle of substantially 455, as best shown in Fig. 5. An operating handle' 54. The 80 rted con- 35 earrin s:

78 for pushing the cleanei' along the or other surface to' be cleaned is vpi'vot'ally at-- tached to lugs 8Q and 82, and this handle carries a cable 84 for conveying current to-the motor for operatin the fans. The fan casing 12 is provide with slots 86 for the escape of air which is drawn through the device. I I v The-operation and advantages of my invention will be readily understood from the foregoing descripti'om' The rotation of the rima fan 18 causes a current of air to drawn into the suction head 28 and to enter, the air cleaner casing 14 by way of the helical passages which give the air a cyclonic movement in clockwise direction in the embodiment shown as viewed from the- I rear and indicated by.the arrow in Fi 4. Thisrthro'ws solid impurities such as ust, dirt, etc. to the outside of the cyclonic movement and some of these impurities pass through the annularspace around the baflie '56 andinto the space 60 from which-this material gravitates th ough the slot and drops into the recepta le 62. The door .66

' v normally makes an airtight closure for the cham r which contains the receptacle. The door may be opened. from time to time so that the receptacle may be withdrawnand the solid matter contained therein emptied. The ribs 55 not only (assist in maintamin "the cyclonic mo ement but keep materiafi such as ieces of string, from being drawn toward t e front of the casing; The current of-air passes forwardly in the central. portion of the air cleaning casin throughthe openings between the blades 2 of the sec? onda fan and out of the device through ment of the. suction head with t e article cleaned, the secondary fan assists in. J ma'intainin'gthe cyclonic movementof the his passing into -the air cleaning casing.

' The small inclined'bl'ades76' upon the pe 7 rlphery of'the secondary fan assist in dr1ving impurities toward the rear of the air cleaning casing. -=The device is easily moved about without injury to the floor or article I which is being cleaned and the suction head 28 is readily maintained in the position which will, 've maximum efliciency The material col ected inthe. receptacle 62 may be readil enigtied and,thisoperation'does not invo vs 1: e trouble or distributionof' (11115 and dust as is the casein-withdrawing- I the bag strainers employed in connection'{ m 'Wlth the. usual vaccum cleaning device; No I in my device, and the air at all timesflowsj strainer is usedin the construction-embodied freely through the aircleaner "casin and (discharges ir mj v t-on slots 86. s 5; 13 no l gfigf clogg nfil'as in thejca'se of insures e new the slots 86, the air being thoroughly'cleaned before it reachesthe fans. When the suction into the device is cut down b engagetrou the inside of said, casing to form .Pwfieways for the air entering said casing, a ba a portion of the circumference of said air I cleaner casing, and 'cooperating'helical ribs extending for the remainder of the circum- I 'ference thereof,

2. A suction cleaner for carpets, rugs and the like comprising a fan casing having dischar e openmgs, a fan in-said casing, an air-c eaner casing attached to said fan casing and communicating therewith, two pipeflmembers-which connect, with the opposite sides of saidair"cleaner'casing, twp troughlike members 'helically arranged-on the inside ofsaid air cleaner casingtoiform helical passageways for the air delivered by said, pipe members,saidtroughlike. members each estendi ng for substantially one-fourth of the l circumference of said air cleaner casing, and

two cooperating helical ribs positioned inthe gaps between said .troughlike. members,

3. A suction cleaner for carpets, rugs and the like comprising a motor casing, afan casing having dischar' e openings and attached at the rear of id "motor casing, an air cleaner casing attached at the rear of said lfan casing and communicating thereith, a motor shaft extending through said 1 an casing and into said air cleaner casing,

a rimary fan 'in'said fan casing attached to, 7 said shaft, means for introducing air into said air cleaner casing, means for giving said air a cyclonic movement in said air cleaner casing a bafile spaced from the rear I I said an cleaner casmgfor asslstmg 1n separating solid impurities from the air, a normany closed airtight chamber com'municab' i ing through a slotjwith said air cleaner casing for receiving saidimpurities, and a seconda fan-secured to said motor shaft in said an; cleaner casing for assisting in maintaining said cyclonic movement. I 4..-A suction cleaner for carpets, rugs, and the like, comprising athorizontally' disposed air cleaner casin pi e membersconnecting with opposite si es 0 said casing, a primary fan for causing a current of air to flow thro h said pipe members into said casing, filikemembersp helically arranged on elical e-in said casing. for assistin 'm'.sep-

.arating solid impuritles from the-a1r, a nor- I mally closed air-tight chamber associated wall of no with said dead-air space for receiving said impurities, a secondary fan on the shaft of said primar fan for assist in in maintaining' t e cyc onic movement 0 air produced by said troughlike members, and small inclined blades on the periphery of said secondar fan for causing rearward movement of sai impurities.

5. A suction cleaner for carpets, rugs and the like comprising a horizontally disposed air cleaner casing, pipe members connecting with opposite sides of said casing, a primary fan located at the front of said casing for causing a current of air to flow through said pipe members into said casing, troughlike members spaced from each other and helically arranged on the inside of said casing to form hellc al passageways for the air entering said casing,helic al ribs in the gaps between said troughlike members, a bafiie supported in spaced relation from the rear wall of said casing for assisting in separating solid impurities from the air, a normally closed air-tight chamber in communication through a' slot with said dead-airspace for receiving said im urities, a 'secondary'fan mounted on the s aft of said primary fan at the rear of the latter for assistin in main- I taining the cyclonic movement 0 air produced b said troughlike members, and small incline 'blades on the periphery of said secondary fan for causing rearward movement of said impurities.

In testimony whereof I hereunto afiix my signature.

'- ASHLEY- (I. BENNETT.

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