US2083749A - Cleaner element for cleaning machines - Google Patents

Description

`lune 15, 1937. R, P, SWORD GLEANERELEMENT FOR CLEANING MACHINES Filed May 27, 1935 Patented June 15, 1937 UNlTED STATES CLEANER ELEMENT FOR CLEANING MACHINES Rowland I. Sword, Philadelphia, Ia., assigner to Sword-Atherton Co., Inc., Philadelphia, Pa., a corporation of Pennsylvania Application May *27, 1935, Serial No. 23,634

2 Claims.

My invention relates to new and useful improvements in a licor cleaning element for cleaning machines and has for one of its objects to produce such an element comprising a squeegee of gum rubber impregnated with a suitable abrasive for application to a floor cleaning machine.

Another object of the present invention is to provide a cleaning element of the class mentioned having a serrated working edge.

In cleaning machines of the general class used for removing dirt or extraneous matter from floors or other surfaces it is usual toi employ gritty substances with the iiuid which Aoften streaks the surface being cleaned and does not regularly attain a uniform result. It is a further object of my invention to overcome these disadvantages by including the abrasive as a part of the cleaning element whereby the necessary abradant action is achieved without the use of a loose or free abrasive material.

With these and other objects in View, this invention contemplates the application of an article of manufacture to a specific use as will be fully described and then designated in the claims.

In order that those skilled in the art to which this invention appertains, I will describe its construction in detail, referring by numerals to the accompanying drawing, in which:-

Fig. 1 is a perspective View of a rotor of a cleaning machine showing a number of cleaning elements, constituting the present invention, carried thereby.

Fig. 2 is an enlarged end view of one of the supports and the assembled cleaning elements.

Fig. 3 is a side elevation thereof.

Fig. 4 is a face view of one of the cleaning elements, per se.

Fig. 5 is a View similar to Fig. 4, of a modified form of the cleaning element.

Fig. 6 is a side elevation of a further modication.

Fig. '7 is a fragmentary bottom plan View thereof.

In carrying out my invention as herein embodied 6 represents a rotor for a cleaning machine including a plurality of radial arms 8 I. On top of each arm is a washer plate l and underneath is an inverted U-shaped or channel holder 8. In the holder is a relatively thin filler plate 8l of the same Width as the interior of the holder and below said filler plate 8| is a moulding strip 82 of less width than the iiller plate and located longitudinally thereof intermediate its side edges thus forming recesses between the side surfaces of the moulding strip 82 and the sides of the (Cl. ill- 195) holder 8. The washer plate, holder, ller plate and moulding strip are fastened to the arm 8| by bolts 'll or their equivalent, passing through all of said parts.

Two cleaning elements 9 are carried by each arm of the rotor and their upper ends are inserted in the recesses formed between the moulding strip 82 and the sides of the holder 8 and secured by fastening devices 83 projected through the sides of the holder, said cleaning elements and the moulding strip. The cleaning elements are thus arranged in parallelism and extend below the holder for accomplishing a wiping action on a floor.

Each cleaning element 9 is of a form generally known as a squeegee and is composed of gum rubber impregnated with grains or particles of a gritty substance or abrasive such as volcanic ash, emery, flint, pumice or any suitable equivalent material.

The abrasive substance must be fine enough as not to score or damage the surface being cleaned yet must be sufficiently coarse to readily loosen or remove dirt Aor extraneous matter from such surface, leaving the .cleaned surface with the minimum amount of sheen to avoid the possibility of accident by slipping. Also the quantity of abrasive material in the rubber must be adequate for the purpose intended and still leave the cleaning element flexible, however the amount of the abrasive material must not be such as to make the cleaning element brittle and therefore likely to crack or break while in use.

With a cleaning element of this character applied tol a cleaning machine for use in cleaning floors or other surfaces of wood, marble, stone, artificial stone or other relatively hard material, the dirt or extraneous matter will be loosened and dislodged for removal in anysuitable manner.

In actual practice it is customary to use one of the edges of the cleaning element as the working surface and this working surface maybe straight as illustrated in Figs. l to 4, or it may have serrations I0 of any desirable conguration or contour as shown in the modification 9a illustrated in Fig. 5, but in every instance the cleaning element is movable laterally.

The cleaning element may be produced in various forms or configurations and by any of the well known processes .of manufacture. For instance, such element, designated by the reference numeral 9b, may be composed of molded compound rubber containing an abrasive and including flexible fingers.- as shown.

I am aware that articles composed of. rubber CTI with an abrasive incorporated therein have been used and therefore I limit myself to the pro'- vision of such a composition for use as a floor cleaning element when applied to a floor cleaning machine.

Having thus fully described my invention, what I claim as new and useful is:-

1. In a device of the kind described, the corn-- bination with a rotor including a plurality of radial arms, an inverted U-shaped or channel holder on the under side of each arm, a ller plate of substantially the same width as the inside of the holder mounted within. and against the top wall of said holder, a moulding strip of less width than the ller plate and placed against the latter longitudinally thereof intermediate the sides edges thus forming recesses between the moulding strip and the sides of the holder, a 10 washer plate on top .of the arm, fastening devices projected through the washer plate, arm, holder, ller plate and moulding strip for securing said parts together, cleaning elements comprising fiat strips of abrasive rubber inserted in the recesses, and fastening devices projected through the sides of the holder, the cleaning elements and the moulding strip for attaching said cleaning elements.

` ROWLAND P. SWORD.

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