US2313787A - Cleaning device and method of making same - Google Patents

Description

March 16, 1943. s. P. VAUGHN CLEANING DEVICE AND METHOD OF MAKING SAME Filed Sept. 11, 1940 INVENTOR.

Patented Mar. 16; 1943 "slam, layman, Ackerman, mu. Application September 11. 1940, Serial No. 35 ,301

' scum. 101. 209) (oi-mes under the m of March a, me, as

amended spi-u so, ma; 310 o. o. m) I This invention relates to cleaning devices generally, but has special reference to a novel and improved method and means for attaching a compressibleimaterial, such as cellulose sponge and rubber sponge, to ametal holder .or backn! disinfectedwithout breaking down the connec-.

tion between the sponge and its metal backing.

Other objects and advantages of the invention will be apparent fromthe following description when taken inconnection with the, accompanying. drawing,in which, I

' A. further obiect' ofi the invention resides in trimmed to the size of the sponge. The sponge with cloth attached is then placed in the trough of a metal plate 3 having flanged edges 4 extending toward and alongside of the, sponge. The flanged edges 4 are then folded inwardly to form closed locks which grip tightly the lower "corners of the sponge, as indicated by the dotted Fig. 1 is a perspective view, partly in section, of

one-form of the finished article which may be used either as a sponge brush or as a cleaning elementfor mops and the like. I I

Fig. 2 is a cross section illustrating the second step inassemblingthe sponge in its meta-l back- Fig. ii is a cross section illustrating the third step in assembling the sponge in its metal backins. I

Fig, 4 is a cross section illustrating a modified form of the finished product particularly adaptable for use in mops.

Fig. 5 is a cross section illustrating another modifled form of finished product.

Like numerals refer to like parts throughout the several views.

Referring to the drawing, numeral l designat'es an elongated block of spongy material, such as cellulose sponge or rubber sponge, which is adhesively attached to a sheet of cloth 2, or other suitable material, by an adhesive 6, such as cellulose cement. The numeral 3 designates a metal backing, or a backing made of other suitable material, having double hemmed or folded flanged edges 4 which lock around thelower corners of the sponge and the edges of the cloth and adhesive, as indicated in Fig. 3, to hold the sponge securely attached to the metal backing.

Figs. 2 and 3 illustrate one method of assemblingthe sponge in the metal backing. The

sponge l is securely attached .to a sheet of cloth lines 5 in Fig.2, and the edges of the cloth and adhesive as illustrated in Fig. 3. From this step on the folded edges of the metal backing may be flanged at any desired angle, depending upon howthe articleistobe used. I I

The folded edges illustrated'in Fig. 3 may be flanged. inwardly toward the sponge at right angles as illustrated in Fig. l, which article is suitable as a sponge brush or as a cleaning element for mops. In certain cleaning devices it is desirable to have only one of the folded edges flanged inwardly alongside of the sponge and to have the opposite flanged edge extend outwardly as illustrated in Fig. 4, which form is particularly suited forv certain types of sponge mops. In other types of'cleaning devices it is desirable to have the folded edges flanged away from the sponge as illustrated in Fig. 5.

In certain forms of construction it may be desirable to eliminate the cloth insert 2 and depend entirely upon the thickness and toughness of the adhesive alone to hold the sponge securely attached to the metal .backing. One form of such construction is illustrated and described in my U. 8. Patent No. 2,158,601.

In this invention the construction and method of assembly is somewhat modified. When the cloth insert is eliminated and the thickness and toughness of the cement is to be relied upon entirely to holdthe sponge securely attached to the metal backing, the ends of the flanged backing 3, Fig. 2, are closed about half the depthof the flanged sides by any suitable means and a liquid adhesive such as cellulose cement is poured into the trough to a depth that will provide a substantially thick and tough adhesive when dry. After the adhesive is poured into the backing, the sponge is placed in the trough between the flanged sides, which act as guides, and compressed against the bottom of the backing until the cement is dry. After the cement has dried sufliciently the sponge is decompressed and the flanged edges 4 are folded inwardly to form a closed lock which grips tightly the lower corners of the sponge, as indicated by the dotted linesi in Fig, 2, and the edge portion of the cement 6 as indicated in Fig. 3. From this step on the material 2 by a suitable adhesive I and the edges folded edges may be flanged in any direction desired as indicated in the drawing and described above.

From the foregoing description and the attached drawing it will be apparent to those skilled in the art that I have devised an extremely simple and inexpensive means andmethod for permanently attaching backings to sponge material such as cellulose sponge or rubber sponge; that the resulting product is neat and attractive in appearance; and that the invention is adaptable for many purposes.

In accordance with the patent statutes I have described what I now consider the preferred embodlments of my invention, but various changes or modifications can be made without departing from the spirit of the invention, and all such changes and modifications are intended to be included within the scope of the appended claims.

The invention described herein may be manufactured and used by the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

What I claim is:

l. The method of securing a block of spongy material to a backing member which comprises adhesively securing the spongy mateiral to a sheet of cloth material placed in the chanel of a flanged backing, folding inwardly the flanged edges of the backing member to grip and lock securely corner portions only of the sponge and the edges of the cement and sheet of cloth material to the backing member, and folding inwardly toward the sponge that part of the backing which locks and grips the sponge-and cement, whereby the major portion of the sponge remains in uncompressed condition.

2. The method of securing a block of spongy material to a backing member which comprises placing a substantial quantity of adhesive in the trough of a flanged backing member, placing the block of spongy material on the cement in the trough and compressing it against the backing member, folding inwardly one or more of the flanged edges of the backing member to grip and lock comer portions only of the sponge material and the edges of the cement securely to the backing member, and folding inwardly toward the sponge that part of the backing which looks and grips the sponge and cement, whereby the major portion of the sponge remains in uncompressed condition.

3. The method of securing a block of spongy material to a backing member which comprises placing the spongy material in the channel of a flanged backing member, folding inwardly the flanged edges of thebacking member to grip and lock securely corner portions only of the block of spongy material to thebacking member, and folding inwardly toward the block of spongy material at least a part of the backing member which looks and grips the block of spongy material, whereby the major portion of the block of spongy material remains in uncompressed condition.

4. In a cleaning unit, a block of initially uncompressed spongy material and a U-shaped chanel member, the bight of said U being of sub-' in an uncompressed condition.

5. In a cleaning unit, a block of initially uncoin-pressedv spongy material and a U-shaped channel member, the bight of said U being of substantially no greater width than the width of the base of the initially uncompressed block of spongy material, one of the legs of said U being folded inwardly and downwardly to gri only the adjacent corner of the base of the block of spongy material between such leg and the blght of the U, the other of the legs of said U being folded inwardly to grip the opposite adjacent comer of the base against the bight of the U, with a major portion of the sponge remaining in an uncompressed condition.

6. A cleaning unit including a block of initially uncompressed material secured to a backing member having a width substantially no greater than the width of the base of the initially uncompressed block of spongy material and sides extending from said backing member, said sides being folded inwardly into the spongy material to grip and compress at least two edges of the block of spongy material against the backing member and leave a major portion of the block of spongy material in an uncompressed condition.

SIDNEY P. VAUGHN.

Patent No. 2,313,787 Granted March 16, 1943 SIDNEY P. VAUGHN The above entitled patent was extended November 13, 1951, under the provisions of the act of June 30, 1950, for 4 years and 341 days from the expiration of the original term thereof.

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