US1607500A - Brush apparatus - Google Patents

Description

Nov. 16, 1920. 1,607,500

' J. V. AGAR ET AL B'RUSH APPARATUS Filed June 18, 1925' 2 Sheets-Sheet 11 9' I 9 1MB,

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J. V. A GAR El AL BRUSH APPARATUS Filed June 1925. 2 Sheets-Sheet 2 u 14 us m I t Jbhan V g Kal'L .aJi'arla-s'on) W Axel W Patented Nov. 16, 1926.

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JOHAN VERNER AGARJKARL GIDEQN KARLssorL' Nn 'AXEL. WAHLFRH) Barter/ AN,

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BRUSH APPARATUS.

Application filed June 18, 1925, Serial No. 38.068, and in sweflen June 19, 1924.

The present invention relates to apparatus for waxing or polishing floors or for similar purposes of the kindcomprislng rotatable brush rollers which are driven by an electric motor. 7

The invention has for its objectto provide a brush-apparatus of this kind which is simple in construction, efiicient' in operation and comfortable in use.

Referring to the drawings, illustratingone embodiment of the invention, Figure 1 is a side elevation of the brush-apparatus, Figure 2 a horizontal section on the line IIII in Figure 1, Figure 3 a vertical section 011 the line III-III in Figure 2 and F igure 4 a vertical section on the line IV-IV in Figure 1. 7

On the drawing 1 denotes the rotor of the electric motor, 2 the stator thereof, and 8 the motor shaft. This shaft is substantially vertical and journalled by preference in ballbearings at. The lower end of the shaft car-' ries a worm 5 which meshes with two worm wheels 6 located on diametrically opposite 25 sides of the worm a and fixed each on a shaft 7. The inter-meshing wheels 5, 6 are enclosed.

in a casing 8 the walls of which support ballbearings 9 in which the shafts 7 are journalled. The two shafts 7 are mutually pan allel and carry each two brush rollers 91.

The four brush rollers 91 are arranged by pairs in a symmetrical manner on each side of the vertical middle plane of the apparatus passing perpendicularly to the shafts 7 so that two brushes on the same side of this plane in the working of the apparatus will treat substantially the same surface.

The body 10 of the respective brush 91 is in the form of a hollow cylinder divided longitudinally into two halves which are detachable from each other and from the shaft. The body of each brush rests upon the shaft by means of lateral walls 11 formed with collars 12. These collars have grooves 13 formed thereon receiving springs 14 in the form of open rings which almost entirely embrace the halves of each collar 12. One of these resilient rings, preferably that one on the extreme end of the body, by its one end engages with a boring 15 passing through the collar into the shaft 7. By this means the two halves of the body are retained on the shaft and caused to revolve with the latter. By disengaging the outer spring 141 from the shaft the brush is readily removed from the shaft. a

"The top of the casingS serves as a base.

for the motor and also carries a plate 16 covering the tops and surrounding the sides of the brushes. The lower edge of this plate has a ribbon 1'7 of rubber or the like fastened to the outer side of the plate.

The upper end of the motor shaft carries the slip-rings 18 and these rings as also the brushes (not shown) for supplying the current to said rings are enclosed by a cover 20.

As will be understood, the apparatus rests upon the brush rollers 91 and on account of the central arrangement ofthe motor the pressure of the brushes upon the fioor to be treated will be equal all over the surface of the brushes in contact with the floor.

When to be used, the apparatus is moved on the floor by means of a handle 21 pivotally attached to the apparatus. By the electric motor the shafts 7 with the brush rollers 91 are rotated in opposite directions as indicated by the arrows in Figure 1. \Ve do not wish to confine our invention to the embodiment above described with refereence to the drawings but want to be free to vary the details thereof within the scope of the appended claims.

What we claim is 1. A brush apparatus comprising two substantially horizontal shafts each carrying two brush rollers adapted to rotate thereon, an electric motor, the shaft of which is substantially vertical, a worm mounted 011 the lower end of the motor shaft, and a worm wheel mounted on each shaft of the brush rollers between the two brush rollers thereon, said worm meshing with the worm wheels on diametrically opposite sides of said worm.

2. In an apparatus of the character described, a casing, a pair of shafts arranged in parallel relation and extending horizontally through and beyond the opposite sides of the casing, brushes fixed to the outwardly extended portions of the shafts forrota-tion therewith, a motor having a vertical shaft extending into the casing to a point between the shafts and drive connection betweensaid vertical shaft and the horizontal shafts.

3. A brush apparatus of the character describedcomprising a gear casing, bearings arranged in the opposite side walls of said casing, a pair of shafts journaled in said bearings and extending beyond said casing, brushes carried by the extended ends of said shafts, a motor mounted upon said casing, a shaft extending from said motor and depending Within the medial portion of said casing, a worm gear carried by the lower end of said shaft, Worin wheels carried by said pair of shafts and adapted to mesh With the diametrically opposite sides of said worm gear, and a housing suspended from said casing and extending over said brushes.

4:. A brush apparatus of the character described comprising a gear casing, a top formed with said casing and extending beyond the opposite sides thereof, a motor mounted upon said top, a cover on said m0- tor, bearings arranged Within said top and cover, a shaft for said motor journaied Within said bearings and depending Within said gear casing, pairs of brushes connected to and arranged upon the opposite sides of said motor shaft, and a plate supported by said casing and extending over said brushes.

In witness whereof We have hereunto set our hands.

JOHAN VERNER AGAR.

KARL GIDEON KARLSSON.

AXEL XVAHLFRID BERGMAN.

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