US2382969A - Floor polishing device - Google Patents

Description

Aug. 21, 1945. @w. A. BOETTCHER 2,382,969

. FLOOR POLISHING DEVICE Filed June 29, 1943 z/m. ,BoZZcker 1N VENTOR.

V ATTORNEYS.

Patented Aug. 21, 1945 UNITEDSTATES PATENT OFFICE a ,Fi;oo1t1 oLIsHmGpEvIcE p Q William A. Boettcher, Chicago, 111.

g Application June 29, 1943, sesame. 492,733"

2 Claims. ,(CL-230) My invention relates to floor polishing ma chines, and more particularly to devices employed by such machines for polishing contact with the floor, and one of my objects is to provide a polishing device which employs steel wool economically.

A further object of the invention is to provide a device for the above purpose which is constructed in a manner to secure a hold on the steel wool employed for the polishing operation and retain such hold while the machine is in action.

A still further object of the invention is to employ a base or backing in the polishing device which is of cellular construction and presents a plurality of engaging elements for the steel wool.

Another object of the invention is to employ a base or backing for the steel wool which contains numerous laminations set at angles to exert a scooping action when in contact with loose or accumulated matter on the floor, whereby to collect or remove such matter.

An additional object of the invention is to utilize a common pasteboard unit as the backing or base for the polishing device, whereby to make its production economical.

With the above objects in view and any others which may suggest themselves from the description to follow, a better understanding of the invention may be had by reference to the accompanyingdrawing, in which-- Fig. 1 is a side elevation of a typical floor polishing machine employing the improved polishing device;

Fig. 2 is a bottom plan view of the polishin device on an enlarged scale; and

Fig.3 is anenlarged sectional detail on the line 33 of Fig. 2.

Floor polishin machines usually employ a brush or sandpaper disc as the polishing element, and in some cases blocks or thick pads of steel wool have been used under the disc instead of sandpaper. The steel wool has proven efiective for the floor polishing operation, but extremely wasteful, since only its bottom layers actually perform the polishing operation, while the upper layers serve as body or padding material. It has thereof at II. This disc ordinarily serves as the polishing unit when lined on the bottom side with a sheet of sandpaper or a pad of steel wool.

For the purpose of the present invention, the conventional sandpaper sheet or steel wool pad is replaced by a disc l2 of corrugated pasteboard. The formation of the disc is that of a very narrow tightly wound spiral roll of the corrugated paper or board, as is evident from Figs. 1 and 3, such rolls being made by suitable machine methods and available on the market. However, in the novel embodiment, the pitch of the corrugations is not ordinary or directly crosswise but inclined, as indicated in Fig. 3.

The disc 12 is intended to receive thin and uneven layers of the steel wool l3 on its under side, the same being preferably laid in scrolls or windings. The steel wool is originally attached to the disc l2 by looped threads [4 at spaced points in order that the disc and the wool layers may be handled, wrapped and shipped as a unit without separation. However, when the device is to be usedQthe threads are not relied on to hold the steel wool layer to the pasteboard disc, since the weight of the polishing machine on the same will maintain the wool in place, such action being aided by the nesting of numerous wool strands in the openings or cells of the disc with an adhering effect.

When the machine is inaction, the steel wool layer will operate as usual, except that its uneven texture or surface will induce a plurality of polishing impulses by the presence of protuberant or high spots where the thicker portions of the layer exist. Also, a smoothening action will be induced by such portions of strands as are oblique to the rotary path of the device.

It is conceivable that floor dust, paint particles,

. loose matter or other accumulations will form as therefore been my intention to develop a polishing device which only uses an amount of steel wool necessary for the polishing operation, employing a backing or base of a much cheaper material.

In accordance-with the foregoing, specific reference to the drawing indicates a typical floor polishing machine at ill, and the rotary disc .the polishing proceeds.

cells in the disc l2 will cause them to act as Here the pitch of the scoops to take up the loose material and enable the steel wool to secure better contact and prog- .ress in the polishing operation.

volvea small cost. This feature makes it easy to discard the device when it has become worn out or clogged and to replace it at nominal cost,

effecting a large saving of steel wool when comparison is made with the amount making up the regular steel wool pad. Moreover, the sides of the latter scratch up base moldings when moved along the same, whereas the novel polishing device presents soft pasteboard on the sides, with the steel wool only on the bottom. Finally, it is evident that a polishing device of the above description is an article which is easy to handle, very light andpossible of being stored in quantities where the machine is kept, and used as needed.

While I have described the improved polishing.

1. A floor polishing disc for uselon the rotary plate of a floor polishing machine, said disc comprising a tightly wound spiral roll of relatively stiff corrugated material forming a cellular structure, the walls of the material defining said cells being in a substantially vertical plane, and the lower edges of said walls having a thin layer of steel wool secured thereto.

2. A floor polishing disc for use on the rotary plate of a floor polishing machine,.said disc comprising atightly wound spiral roll of relatively stiff corrugated paper forming a cellular structure, the paper walls defining said cells being slightly inclined to the vertical, the lower edge of said walls having a thin layer of polishing mateizial secured. thereto, whereby said material reas coming within the scope and. spirit of. the ape pended claims.

I claim:

moves scrapings from a floor and said cells act asreceptacles to receive said scrapings.

WILLIAM A. BOE'I'ICHER.

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