US2240005A - Wall cleaning attaclment - Google Patents

Description

April 29, 1941. s. w. MOYER WALL CLEANING ATTACHMENT Shee ts-Sheet l Filed Aug. 15, 1938 In yen for George W Mayer April 2 14L (5. W. MOYER WALL CLEANING ATTACHMENT Filed Aug. 15, 1958 2 Sheets-Sheet 2 Fig. 6

Inventor George WI Mayer Md Y 7/ Rita rues Patented A t. 2s, lhtl srnrss' PATENT orrice WALL CLEANING lir'rAcnMuNr George W. Meyer, lPortland, Greg. Application August 15, 1933, Serial No. 224,847

1 Cluim. (cl. lie-=1) My invention has for its object the cleaningof kalsomined, or papered surfaces, such as interior walls and ceilings.

Various methods of removing dry dirt and dust from interior wall surfaces have been tried, such as wiping the surfaces with dry cloths, or other fabricated substances to which the line dust particles removed from the wall will cling. These means have, however, not been satisfactory, since they either removed only part of the dirt, leaving the walls streaked and smeary, or, at best, cause loosened from the well suriece so that the in duced suction may seize them and carry them oh and the suction applying means must he adopted to perform its worlr emciently. f

- l uttoln my object by an implement uttachehle to a suction producing device, for example, it soculled "vacuum cleaner. My attachment comprises a hollow head to which is emred o. cleandoe pad of soft sponge-like material, for ex ample sponge rubber, of substantial thickness. The cleaning pad is smiled, to a rigid heel: by which the pad is firmly securedin the open face of the head. Air ducts extend from the exterior face of, and thru the pad and its heck. The securing of the pad by its heel: to the head so that the hody oi the pad is located entirely outside oi the head is on essential feature of my invention. This arrangement prevents any compression of the pad=body longitudinally, and thus prevents compression 01 its sir ducts, as would result if inserted in the head oi my attachment. It is essential thot the olir ducts oi the pad he hept fully open, otherwise the device will not wort: emcieritly; for the pulling of the dust wiped ed the well surface thru the pad and into the head, and thence to the dust-bar oi the vacuum cleaner element can only heefiectively accomplished-by providing the cleaning pad with air ducts oi predetermined, ample diameter, and essurinuthot ull oi them will remain fully open in the use oi the cleaning uttachment. if in the use of my uttnchment the air ducts of the cleenlne paddle in pert closed, the portlonoi the pad in which such closing occurs is'lncepuhle of pulling the loosened dust 0d the well suriece end streehs oi dust not removed would lnevitehly result.

The. discontinuous wall sections of the cells lying in the working face of the sponge-like pad of my attachment function similarly to the in terwoven threads of a wiping cloth. The pad first loosens the dust. and the dust loosened is then removed from the wall surface by the suc-' tion induced in my attachment. A series of sponge-like pads may be provided, which may be interchangeably used in the headaccdrding to the character of the wall-cleaning work to he done.

in order to do the cleaning ot the wall surface well all areas should be gone over several times, similar y as a, painter would so over the same surfaces to assure an even application of paint.

Further details of my invention are hereinafter described with reference to the accompanying drawings in which,

Fig. l is a perspective assembly view of my implement; I

Fig. 2 is a perspective view of the abrasive pad or member removed from the head in which held;

Fig. 3 is a diagrammatic end elevation of the.

said abrasive member;

Fig. d is u transverse section taken on the plane designated 3, l, ii in Fig. 1;

f le. ii is a longitudinal section token on the plane designated h, it, ll, in Fig. 1; end

his. e is e, similar section as Fig. 5, showing it difierent urrancement oi the sin-ducts of the ehrasive pad thun shown in Fig. 5.

A hollow heed e is edapted to have removably secured therein a pad of sort sponge-like ma= terial d, ofsuhstential thickness for which E preierebly use sponge rubber. The pad c is provided with a stifi Touch it made of heavy canvas, leather, or other moterial found suitable so its to give the pad sumcient firmness, and provide the means for iastenine the pad to the head and so thnt the hody of the pad will be located outside the head. The leach of the pad is provided with A symmetricully erranged sir ducts c which, we in.-

dlcated by d, extend through the pad to its work ing iece e. The head e is udepted to provide on air-chnmher i, end the air ducts c of the leech h, and oi the pool at (d or it) must he armored so no to connect suhstuntislly the entire area oi the worlrlue isce c or the pad with the sir-= r 3 i We in the common vacuum cleaner is to be attached to the neck k of the head 2.

The number of air-ducts, as d or d, provided in the pad a, and the required internal diameter of said air-ducts may be varied as deemed most emcient for work on the wall surface to be cleaned. It is essential that the air ducts, d or d, b arranged sufliciently close together so as to assure that the particles of dust as dislodged from the wall surface by the pad (1 will be drawn through th air-ducts into the air-chamber Z, and thus removed by the suction providing means attached to the head e.

I have found it best to provide several pads as a, which may be interchangeably secured in the head e; and in that way the number of air-ducts provided in the pads respectively, and the internal diameter of the air-ducts may be so designed as to accomplish the most efiicient cleaning of particular wall surface.

The head e is preferably made of metal. This head may be made in the form of a box-like structure open along one side, and the bottom as seen in Fig. 4, and having a detachable side cover-plate f. This cover-plate f is held in place i at one end by a lip e integral with the head 2,

and at the other end by a screw g threaded into an inturned wall portion of the head. The lower wall portions of the head 6 are bent inward as at h, Figures 4, 5, and 6, to form a peripheral flange, and the cover-plate f has a similar flange 2' (see Fig. 4). When the cleaning pad 11 is fastened to the head e, the flanges h and i engage a peripheral groove 1' (see Fig. 3) provided in the edges of the stiff back i) of the pad a and hold the pad firmly in place, with the body of the pad located entirely on the outside of the traction of the air ducts extending thru the pad body. Removal of the cover-plate permits the back of the pad a to be slid out of the head e. In use, the fixture it is connected by a hose to suitable means for creating suction, and the pad 4: is moved with a rubbing action over the surface of the wall or ceiling to be cleaned. The pad a loosens the dust film from the wall surface, and the suction produced in the chamber 1 of the head then draws the dust particles through the air-ducts of the pad and its back into thechamber l, and thence through the hose connection to a suitable dust bag or receiver common to ordinary vacuum cleaners. v The foregoing description of my invention merely describes details in construction which I found convenient, but it is to be understood that I do not limit myself to any particular detail excent as essential to the principle of my invention.

I claim: A wall-cleaning attachment comprising, a hollow head constituting a suction chamber, said head being connect-able to a vacuum inducing means,

and having an open face, a-sponge-like resilient brushing .pad of substantial thickness and having a plane outer face, a rigid back piece to which said pad is firmly attached, said back adapted to be inserted inand providing a substantially air-tight closure for said open face of the head, said pad and its said back provided with concentric, continuous suction ducts of substantial cross section constituting clear, constantly open dust passageways extending through said pad and its back and into said open suction able, and grooves adapted to receive said holding flanges provided on the perimeter of said back.

GEORGE W. MOYm.

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