US1689811A - Vacuum cleaner - Google Patents

Description

Oct. 30, 1928.

I or/144m. I.

Y Ililltttg M WITT VACUUM CLEANER Flled July 12 1926 Patented Oct. 30, 1928.

UNITED STATES PATENT OFFICE.

MILTON WIT'I, OF BUFFALO, NEW'YORK.

' 'VACUUM'. CLEANER.

Application filed. July 12, 1926. Serial No. 121,7 68.

the deeply'embedded dust and dirt'and cleaning'lint and hairs from the nap of .the rug or carpet without injuring it.

The object of the invention is to increase the nap-loosening action of the brush, in order to more fully utilize the cleaning action of IO the vacuum.

In the accompanying drawings: Figure 1 is a side elevation of a vacuum cleaner, partly in section, embodying the invention. Figure 2 is a bottom plan view thereof. Figure 3 is a 15 transverse vertical section, on an enlarged scale, of the vacuum chambercontaining the oscillatory brush.

Similar characters of reference indicate corresponding parts in the several views;

indicates the hollow body or frame of the machine supported by the usual wheels 11 and provided at its front end with a depen'd;

ing vacuum chamber 12 of any ordinary construction having the customary nozzle13- 95 which slides upon the rug, carpet or other obj ect to be cleaned. The body contains any suitable vacuum creating device, such as a fan 14, shown by dotted lines in the drawings, the same being driven by an electric or other ap- .propriate motor 15 also indicated by dotted lines. In the preferred form shown in the drawings, the fan is housed in a cylindrical enlargementlfi of the body, to the rear side of-which is secured the usual hanger-bracket 17 which receives a handle 18 shown by dotted lines in Fig. 1.

Arranged in the vacuum or nozzle chamber 12 is a brush having a sweeping surface preferably consisting of tufts or bristles 19 projecting from the underside of the brush-stock or roller 20 which is journaled at its end in bearings formed in the end walls of the vacuum chamber. In the preferred arrangement of the bristles. shown in the drawings, the same are disposed in two parallel rows, the bristles in one row being staggered relatively to those of the companion row.

The brush is oscillated or otherwise moved back and forth during the use of the cleaner and it is so mounted in the vacuum chamber that" its bristles contact with the rug or other object to be cleaned both during the forward and backwardstrokes' of the brush, so asto effectually loosen and separate the nap or rugfibres and quickly and thoroughly disengage the dirt from them as well as any clinging lint orhairs, thereby subjecting the same to the suction-action of the Vacuum, fully utilizing its cleaning capacity and expediting the 'operation.

Any suitable mechanism may be employed for actuatingthebrush. Forexample,asshown in the drawings, it is oscillated by the electric motor 15 which drives the fan, through. a worm gearing 22 including an upright rotary shaft 23 journaled in the rear portion of the frame 10 and carrying a crank-member 24 which is connected by a link 25 with a rock arm 26 secured to the brush stock 20, whereby the rotary motion of said shaft imparts oscilv latory. motion to the brush. As shown in Figures 2 and 3, the rock arm is arranged centrally on the brush stock and operates in a com-- partment 27 formed in the nozzle 13, the rear wall of such compartment having anopening "28 for the passage of the link 25.

I claim as my invention:

In a vacuum cleaner, the combination of a frame having a vacuum chamber terminating in a nozzle, a compartment formed in the nozzle below and in communication with said vacuum chamber, said compartment having an opening in its rear wall, an oscillatory brush mounted on said frame and extending through said compartment, the brush having a rock arm thereon operable in said compartment, and actuating mechanism for the brush including a rotary crank member and a link connecting the rock arm with the crank member, said parts being located exterior of the frame merit-opening.

MILTON WITT.

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