US1712923A - Brush mounting for vacuum cleaners, etc. - Google Patents

Description

May M, 1929. w. 1.. LINDGREN BRUSH MOUNTING FOR VACUUM CLEANERS, ETC

Original Filed Dec 8, 1924 /F/16J Z I/v VE/VTO/F Patented May 14, 1929.

UNITED STATES PATENT OFFICE.

WALDEMAR L. LINDGBEN, OF WATUKEGAN, ILLINOIS, ASSIGNOR T0 ALFRED A. NOR- TON, TRUSTEE, OF CHICAGO, ILLINOIS.

nnnsn MOUNTING FOR VACUUM CLEANERS, ETC.

Application file-'1 December 8, 1924, Serial No. 754,507.. Renewed March 21, 1929.

Mr invention is concerned with brush moniitings for vacuum cleaners, floor sweepers, etc., and is designed to produce a simple and practical mounting for ground wheels, the rotary brush, and the interposed gearing, so that the apparatus will operate with little friction, and will keep in good operating condition with very little attention.

To illustrate my invention,I annex hereto a sheet of drawing, in which the same reference characters are used to designate identical parts in all the figures, of which,-

Fig. 1 is an inverted plan view of a portion of a vacuum cleaner employing my 1nvention, the mounting and gearlng on one end being shown in horizontal section on the line 1-1 of Fig. 2;

Fig. 2 is an elevat1on of one end of the apparatus, with a portion of the casing shown in vertical section; and

Fig. 3 is a detail in section on the line 3-3 of Fig. 1.

lVhile I might apply my invention to any form of vacuum cleaner, I have shown it as applied to the vacuum cleaner shown 1n my Patent N 0. 1,458,714, and the framework 10 is provided at its forward end with the nozzle 11, which extends upward and rearward, forming a vacuum channel 12, as seen in Fig. 2, leadin to the customary suction fan. Beneath this channel 12 is a generally rectangular space walled in on all four sides and roofed over, as it were, in which space the brush 13, the associated ground wheels 14 and the connecting gearing are suitably mounted, as will be described.

I preferably employ the same structure at a both ends, and will describe such structure at one end, with the understanding that a corresponding symmetrical structure will be employed at the other end, if desired.

The brush 13 has on the end thereof a bearing cup 15, preferably constructed of a substantial thickness of metal and having the annular bearing shoulders 16 and 17 formed thereon to co-operate with the bearing apertures 18 and 19 formed in their respective halves of the hollow bracket 20, which is preferably composed of two symmetrical halves stamped up from sheet metal and having their edges spot-welded of otherwise secured together after the bearing cup has been suitably laced therein and secured in position on t e end of the shaft 13, this securing being best effected by forming the indentations 21 in the bearing cup 15 extending into the wooden end of the shaft 13, as indicated in Fig. 3. The bracket is formed of the base portion 22 adapted to be secured to the under side of the top frame by the screws 23, and the concave body portion 24 connected with the base 22 by the neck 25. The bearing cup 15 has riveted in the closed end thereof the reduced end 26 of the spur-gear pinion 27, which extends through an opening 28 in the thin sheet-metal closing cap 29 into the interior of the ground wheel 14, which, as seen, consists of the cup-shaped disk provided with the rubber tire, and having secured therein the hub 30 which has the teeth thereon meshing with the pinion 27 so that said hub is in effect a gear pinion. The reduced end of the hub passes through an aperture in the center of the ground wheel 14 and is riveted thereto, as clearly shown in Fig. 1. The ground wheel 14 is journaled on the bearing pin 31, which has its inner end extending into the recess 32 formed in the adjacent face of the bracket 20 to accommodate it, while its other end is so ported in the second bracket 33 provided i dr that purpose, and secured to the under side of the top of the frame 10 by the screws 34. The thin sheetmetal cup 29 is provided to keep dust out of the interior of the ground wheel 14 and so keep the gearing clean. Grease may be placed inside of the brackets 20, and the ground wheels 14.

The operation of the apparatus will be readily apparent. As the cleaner is shoved over the floor, the ground wheels 14 rotate, and through the intermeshing gear pinions, their rotation is transmitted in the proper direction to the brush shaft 13.

While I have shown and described my invention as embodied in the form which I at present consider best adapted to carry out its purposes, it will be understood that it is capable of modifications, and that I do not desire to be limited in the interpretation of the following claims except as may be necessitated by the state of the prior art.

What I claim as new, and desire to secure by Letters Patent of the United States, is:

1. In a device of the class described, the combination with a framework, of a pair of brackets at each end thereof independently supported from the frame so that they can be completely disassociated, a ground wheel a brush shaft secured in the bearin at each end journaled between the brackets on a bearing pin supported by both of said brackets, a shaft bearing cup journaled in the inner bracket of each pair, a shaft secured in said cups, and gearing connecting the ground wheels and the bearing cups.

2. In a device of the class described, the combination with a framework, of a pair of brackets at each end thereof, a ground wheel at each end journaled between the brackets on a pin supported by both of said brackets, a gear pinion forming the hub of the ground wheel, a bearing cup 'ournaled at its ends in the inner bracket w ich is hollow, a gear pinion secured to the bottom of the bearing cup and meshing with the first pinion, and

cup. 3. In a device of the class descri ed, the

-brush shaft secured in the bearing cup, the

bearing cup having a reduced portion forming an annular shoulder at each end by which it is journaled in the inner bracket, which is made of two hollow symmetrical halves joined at their edges.

In Witness whereof, I have hereunto set my hand.

WALDEMAR L. LIN DGREN

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