US1551409A - Vacuum cleaner - Google Patents

Description

Aug. 25, 1925.

H. T. LANG VACUUM CLEANER Filed Aug. 7, 19722 Inventor: Henry T. Lang,

HIS fltorn Patented Aug. 25, v192s.

' UNITE-o STATES PATENT oFFlc-E.

HENRY T. LANG, or cLnvEnANn, omo, AssIeNon 'ro nnncrnrcvacutm GLEANEB COMPANY, INC., A 'CORIORATION OF NEW YORK.

vacuum camina.

Animation med Angm 7, waa serial' 1u. 579,982.

To all whom. 'it may concern.' `Be it known that I, HENRY T.,LANG, a citizen of the United States, residing at Cleveland, in the countyof Cuyahoga, tate of Ohio, have invented certain new and useful Improvements in vVacuum Cleaners, vof which the following is a specification.

The present invention relates to vacuum cleaners of the portable motor driven type wherein a rotatable agitating device such as a brush is provided in the section nozzle of the cleaner 4which device may bel driven by the same motor as that which drives the suction fan.-

an improved s tructure'and arrangement of brush mounting, and` for1af.cons1derat1on of tion, attention is the accompany- 'llaims appended 2 0 v:ing description andf the' thereto.`

In the drawing, Fig.';f1"1sside elevation'. of a vacuumcleane'r embodying my inven-- I structure; and Fig. 6 is a sectional view of the lower portion of the nozzle.y

Referrin to theldrawing, 10 indicates the "motor, 11 t e fan casing and 12 the suction nozzleof a portable motor driven electric vacuum cleaner. The cleaner is sup orted on a'rear wheel 13 carried in a brac et 14 fixed tothe motor casin and by two forward wheels 15 carri by a. frame 16. Frame 16 is vpivoted to the end walls ofthe u suction nozzle as indicated at 17 and is pro- `vided with a screw 18 for adjusting' the height of ltlienezzle from-'the floor.` --The handle for propelling the cleaner 1s indi- 4-5 cated at' 19 and the dust bag is indicated at 20. On the endz of the motor shaft. is a ulley"21.co11nectedl bg' a belt M22 to fa -pu ley 23 on the shaft o `la Ivbrush 24 .located in the-nozzle of the cleaner. The-structure 5 0 so fardes'cribed maybe taken as typical of any suitable vacuum .cleaner structure,"the

arrangement, 0f the 'mounting for forward- -wheels 1 5 'and the adjustmentthereof form-I4 VOtto Brintzenhofe, Serial No. 579,977 filed The objectfof my invention is' to providel ing the subject matter of an application of on even date herewith.

Referring now tothe bru'sh mounting, the u ends of the brush shaft are fixed in ferrules 25 from which 'project stub shafts 26, and surrounding stub shafts 26 are bearing sleeves 27 provided lwith bearing linings 28. Bearlng linlngs 28 are permanently fixed in sleeves 27 and terminate short of the outer ends of the sleeves to provide recesses 29 1n which are locatedtheheads of pins 30 fastened in holes 31' inthe ends of the stub shafts. .Pins 30 serve to permanently fasten bearing sleeves 27 to the stub shafts and it will be noted that the heads of the pins run on the ends of bearing linings 28'and that they -do not touch the inner surfaces ofl sleeves 27 The bearing sleeves form in subs tance a part of the brush structure and when held tationary `the brush may 4be turned in thm. Formed integral with bearing sleeves 27 areIcup-shaped extensions 32 which surround smalllanges33 on ferrules 25 and form guards to prevent the entrance of threads and dirt to the bearing. Projecting from each flange 33 are one or more pins'.34 which serve tol stir up any dust which tends to lodge inside the guard cups and cause it to work out from the spacesbet'weenv flanges 33 and the cups. Air in being drawn into the cleaner asses these spaces `and the dust, since it is ept stirred up by the pins, is caught by the air and carried to the dust n' the inner surface of the end walls of A the' nozzle are pads 35 to which are fastened I' bearing'holdersf36. Each bearing holder comprises a disk 37 of suitable material, such as fibre, provided with\one' or more curved recesses adapted to receive the bearing sleeves 27. In the present instance two gc'esses 38 and`39 are shown, the recess 38 ing'deeper than the recess 39. Fixed to disk37- is a spring clip 40 the two ends of which project over recesses 38 and 39 and 100 are provided ywith sha 'inturned edges 41 adapted to engage the nurled surfaces of bearing sle'eves 27. At the vcenter of disk 37 is a countersunk opening 42 to: receive a screw 43 for fastening the pads 35 105 and-'diametrically opposed to 1' 38 and 39 and holes 44 which receive the ends of pins 45 projecting from pads 35. Pins 45 serve to correctly position the bearing holders and to hold them from turning.

The purpose of providing recesses 38 and 39 of different depths is to permit of adjustment of the brush. When the brush is new and the bristles are of full length, the brush bearings are put into the deeper recesses 38, the bearing holders at that time being so positioned that recesses 38 open .downwardly as shown in Fig. 3. When the bristles in the brush become worn, the brush is removed, screws 43 are loosened so the bearing holders can be moved from engagement with pins 45, and the holders aref turned so recesses 39 face downwardly, the other holes .44 then coming into line ywith 'pins 45. Screws 43 are then again tightened to fasten the bearing holders 'in their new positions and the brush is again put into place. The `ends of spring clip 40, while they hold the brush bearings firmly in recesses 38 or 3 9, yield sufliciently to permit of the ready removal and insertion of the brush.

In connection with the nozzle of the cleanerthere is provided a brush guard comprising spaced fingers 46 which extend across the mouth Vof the nozzle-to revent the carpet from being sucked too ar'in-to the mouth. Fingers 46 are pivoted at one end to the forward lip of the nozzle mouth by pins 47 and the other ends are fastened together by a strip 48,-being shown in the present instance as formed integral with such strip. Strip 48 lies along the back surface of the rear lip of the nozzle and -on such surface are two roundedprojections 49 which resty in sockets 50 in strip 48. Projections 49 may be formed by fastening small, round-headed.- rivets in the nozzle wall and sockets 50 may be formed by striking out beads in strip`48. When it is desired to remove the brush, the brush guard is'vsprung loose from projections 49 vand swung away from across the nozzle mouth turnino' on pivot pins 47. To return itto .norma position, it is swung back again with projections 49.

on its pivot andsnapped into engagement That is, when the'bearings are clamped in y the bearing holders they are bound to assume positions in correct alignment with the brush and its stub shafts' because they form a art ofthe brush structure.` If the bearingl olders are somewhat out of alignment this will not affect the positioning of `the brushl because the 'spring clips 40 will yield sufficiently to permit the bearings to assume correct positions.'

In vacuum cleaners having motor driven brushes there is always more or less wear What I claim as new and desire to secure by Letters Patent of the United States, 1s

l. The combination with a vacuum cleaner having a suction nozzle, of a dustagitat-ing device in the nozzle provided with stub shafts at its ends, bearings for the stub shafts which bearings are permanently attached to the stub shafts, and bearing holders fixed to the suction nozzle for holding said shaft bearings, said bearing holders comprising members having slots provided with open sides and means for holding the bearings in thefslots.

2. The combination with a vvacuum cleaner having a suction nozzle, of a dustagitating device in the nozzle provided with stub shafts at its ends, bearing sleeves attached to said stub shafts, disks attached to the suction nozzle and provided with recesses having open sides to receive said bearing sleeves, andl spring clip means for holding said bearing sleeves in said recesses.

3. The combination with a vacuum cleaner having a suction nozzle, of a dustagitating device in the nozzle, a shaft for the device, bearing sleeves for the shaft, means fastening said sleeves on the shaft, disks fixed to the suction nozzle and provided with recesses of varying depths, and means for holding the bearing sleeves in said recesses. i

4. An agitating device for the suction nozzle of a vacuum cleaner, said device having projecting stub shafts, bearing sleeves in which said st-ub'shafts arejournaled, means fastening said bearing sleeves on the stub shafts, and'cup-shaped. guards carried by the inner ends of said sleeves close to the ends of the agitating device.

nozzle of a vacuum cleaner, said device havingprojecting stub shafts bearing sleeves in which said stub 'shafts` are .journaled, means fastening said bearing sleeves n the' stub shafts, cup-shaped guards carried by the inner ends of said sleeves close to the ends of the agitating device, and 4pins for stirring up' particlesbf dust to prevent thei lodging in the guards.l l

25. An agitating device for vthe suction 'i 6. In combination, an agitating device,

stub shafts projecting from the ends thereof, bearing sleeves for said stub shafts7 I means fixing thebearing sleeves on the stub 5 shafts', cup shaped members carried by the bearing sleeves, said members surrounding the ends of the agitating device and hav-- l lodge 'in such clearance space.

ing a clearance therewith, vand means for" stirring up foreign particles tending toy 1 0 In witness whereof, I have hereunto set n .my hand this first day of August, 1922.

. HENRY 'TQ LANG.v

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