US2417800A - Method of making a buffing or polishing bar - Google Patents

Description

Patented Mar. 18, 1947 UNITED STATES ATENT OFFICE METHOD OF MAKING A BUFFING OR POLISHING BAR Arthur H. Weisser, Jackson, Mich.

1 Claim. 1

The present invention relates to improvements in the method of making buifing and polishing compounds in the forms of bars, sticks and cakes, and the resulting article.

Compounds of the above type usually consist of abrasives and greases compounded and heated, and then cast into the desired shape or form to be manually applied to polishing and buffing wheels as required. The abrasives used include magnesium silicate, numerous forms of silica, lime, whiting, barytes, aluminum powders, various alundums, emery, lamp black, bone black, chrome oxide, crocus powders, rouges, pumice, tripoli and the like. Some of the greases employed are steric, petrolatum, tallow, degras, waxes, hydrofol, various oils, pitch, anise and the like. According to the present invention the abrasives and greases are mixed together in a relatively dry state, being either powdered or in a granular state, and then molded by pressure alone to the desired form.

Thus one of the objects of the present invention is to provide an improved buffing and polishing bar or cake characterized by a homogeneous structure and improved cutting and applying properties.

A further object of the invention is to provide as a new article of manufacture a pressure molded bufiing and polishing composition bar or cake.

A further object of the invention is to provide an improved method of manufacturing, polishing and buifing composition bars, cakes and the like.

These and other objects and advantages residing in the present invention will become apparent from a consideration of the following specification and claim.

In carrying out the present invent on, in practice the abrasives and greases going into the polishing and buffing composition are mixed together in a dry state. The abrasives are usually in a fine state of division, while the greases, such as steric acid, may be in granular or powdered form. With the ingredients making up the composition in the right proportions, they are thoroughly mixed together and then placed in a suitable mold and subjected to sufficiently high pressure to compress or mold the composition into a dense, homogeneous, stick, cake or bar which may be Number readily handled and employed for dressing polishing and bufiing wheels. The molded composition as it comes from the mold is ready for shipment and use.

It has been found that by molding the buffing and polishing composition at high pressures to form the bars, sticks and cakes, in lieu of heating and casting the same, that the resulting product is more homogeneous, has greater density and requires more pressure in its application to the polishing and buffing wheel. The improved properties of the molded product over that of the cast is considered to result from the lack of air holes and porosity, and the apparent detrimental efiect that heating, melting and casting has upon certain of the ingredients going into the polishing and bufiing. composition,

What I claim as new and desire to cover by Letters Patent is:

A method of making polishing and buffing composition bars, sticks, cakes and the like, comprising the steps of breaking up a mass of grease into small discrete solidified particles mixing abrasives and the grease in a relatively dry granular or powdered state and thereafter molding the mixture into a dense, homogeneous mass, solely with the application of pressure.

ARTHUR H. WEISSER.

REFERENCES CITED The following references are of record in the file of this patent:

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