US1991024A - Method of producing metallic scouring pads - Google Patents

Description

Feb. l2, 1935. D. J. MAYER METHOD OF'PRODUCING METALLIC SCOURING PADS iginal Filed Oct." 2, 1931 INVENTOR. am'e :.7 N C961,

ATTORNEY.

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drawing:

.Patented Feb. 12, 1935 `UNITED' STATES METHOD or raonucm immune scomuNG Pans e Daniel J. Mayer, Belleville; N. J., to Metal TextileCor-poration, West poration of Delaware OrangerN. J.,- a cororigimxapplicants ommz, l1931, seria im.

maar and um 1934.A semina. 'mms application June 5,

i (ci. 14o-s'.

The present invention relates to an improved method of producing 'metallic scouring Pads --of the kind shownand described in my copendiiig` application for United States patent, Ser. No. 566,499, filed OctOber'Znd, v1.931, 40f which this application is a division." .l

for its 'object to The present invention4 has provide va novel method .of producing a metallic scouring pad formed of spirally convolved -metallic wire interwoven'upon itself in a crisscrossl relation so that in the finished article -the interwoven. strand portionswill interlock one with another to form a-non-raveling body calculated to retainits shape under more or` less rough usage, and whereby the-interweaving of thelOQP or strand portions of the metallic wire will tend to dispose the convolutions of the same" at a great diversity of angles of projection, whereby scraping edges offered bysaid convolul tions will project inthe many various directions of movement whichmaybe imparted to the nished device when employed to rub a surface to bescoured or scraped thereby.

The accompanying drawing shows the article and Villustrates VLessential steps of the novel method by which the same is produced In said Fig 1 is a face view o f the article as pro-V duced by the method according to this invention: and Fig. 2 is a diagrammatic view showing certain essential steps of the said method of producing the article.

Similar characters of reference are employed in the above described* views, to indicate correspending parts.

The novel scouring pad of this invention is made of metallic material, comprising a wire which is turned or twisted upon -itself to provide a roughly spirally convolved strand a, or otherwise deformed to'. provide a multiplicity of scraping projections or points along its length. Preferably the wire is of flat ribbon-like formosof angular cross-sectional shape, although wire of any cross-sectional shape, round or angular,1 may be employed. The flat ribbon-like wire,J however.4 when spirally convolved, provides a l multiplicity of chisel-like scraping edges or projections calculated to provide a maximum of abrading effect. While -it is possible to use the metallic strand a alone.- preferably'. however, a iiexible carrier core of metallic wire or textile b is employed upon and around which is convolved yor gimped the metallic strand a..l If metallic wire is employed for the core b, thesurface of the same may be suitably roughened to hold v ished. article to be produced. The amplitude of `the convolutions of the gimped wire 'from undue longitudinal slippage thereon. Preferably the metallic material employed for the vgimping a and'for the/carrier core b, when the latter. 'is of' metallic character, is..ofrelatively non-corrosive4 character; lfor example, 'copper aords a good material, both vby 'reason of its-relatively non-corrosive character as well as because ofiits comparatively'-hard nature; whereby its scraping or abrading functions arel renderedv more emcient. 4 The novel method of-.fabricating-any of the forms of spirally. convolved metallic strand l above mentioned to form the transversely crisscross 'interwoven loops making' upl the `desired matted body of the scouring Dad.. comprises the provision oi,' 4 a mandrel c of suitable length, preferablyhaving along one face thereof a countersunk longitudinal channel d in which is laid a center-tiecord or wire e.v The spirally convolved metallic strand is wound over and aroundv the mandrel c with a progressive traverse forward and back motion, whereby` a diamond or criss-cross latticepat'tern is executed, in which."

the looped strand Lportions linterweave and in- 25 ter-cross one another, as indicated at in Fig'. 2. The length of .the thus applied and interwoven material may extend along the mandrel for such total distance as may be desired-accord-i. ing to the size-of article to be produced. The progressive back and forth ytraverse may be car-l ried on .as many times/as'desired to buildup on the mandrel the desired amount of material according to thev bulk and weight, of the flnthe back and forth traverse of the material, durins the winding thereof on the mandrel c, may be variedeaccording to the desired pitch of windings to be produced. In practice it has been: found that pitch of three inches gives 'a very satisfactory result, and produces a crisscross weave vof about the proper mesh for the character of article1 desired. Y

After the interwoven metallicstrand has been built up on .the mandrel'to the desired amount, the same is slid endwise joff of the mandrel, together withthe center-,tie cord e, (when employed) which extends longitudiriallyA through the interior of the fabricated interwoven massor body. 'I'he mass or 4body thus withdrawn from ,the mandrel is turned endwise upon itself to bring itsends together, and the centerltie-cord e is drawn or tightened to engage in the interior bi'ghts of the interwovenloopsgor' strand portions, thus drawingand bunching' the A' same together to form a center portion from whichthe outwardly extending portions radis ate, as shown in. Figx. l. The meeting ends of the massl or body may be further secured against separation by any suitable means, as by tying or` sewing thesame together with wirey or cord (not shown) or by stapling or by use of any other mechanical fastening means found convenient or expedient. 'The center-tie cord e may be omitted if desired, since the int/erweaving of thel loops of metallic strand material will,

for many purposes, adequately retain the mass 'in its g: 1.1.1,., etrical form, when the ends thereof are brought together and secured.` The use of the center-tie cord e is preferred, however, since it forms and maintains a concentrated center A portion in the iinished device calculated to t rication above set forth, a novel scouring pad maintain the form of thel latter even under the most harsh and rough circumstances ofuse.

As the result of the described method of fabisproduced, such as illustrated in Fig, 1 oi the drawing, in. which the body or mass thereof comprises a multiplicity of interwoven crisscrossed loops of spirally convolved metallic material, saidloops being interlocked one with another by their interwoven relation and contact, so that the finished pad is of more or less coarsely interstitial character, whereby cleansing fluids may be readily passed' therethrough to clean 'and purify the same after use, while at the same time a comparatively. soft,resilient mass is provided. which is comfortable to the hand of the user, and, easily compressible to eiiieiently con` invention, I C

n, A. method of fabricating scouring pads from a strand of .abrasive metallic material, comprising-looping said strand'transversely around a mandrel with' a progressive back and forth traversinggnovement longitudinally of said man- 'drel and over a tie cord longitudinally overlying .saidfmandrel -to thereby interweave the formed loops lin-criss-crossed 'interlocked relation, then removing .the thus interwven strand body together with said tie cord endwise from the man' drel, Vthen drawing said tie cord around bights of said interwoven loops and securing the free ends ofthe same together to gather and bunch the thus engaged bights -into a central portion fromv which the interwoven loops radiate, to thereby form a substantially round pad-like 'f vDANIEL J. MAYER. V

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