US1128287A

US1128287A - Process of making polishing compositions and the product thereof.

Info

Publication number: US1128287A
Application number: US71000412A
Authority: US
Inventors: John P Carmichael
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-07-17
Filing date: 1912-07-17
Publication date: 1915-02-16
Anticipated expiration: 1932-02-16

Description

JOHN P. CARMICHAEL, OF MILWAUKEE, WISCONSIN.

PROCESS OF MAKING POLISHING COMPOSITIONS AND THE PRODUCT THEREOF.

No Drawing.

erence to that class of polishing powders which are used for glossing teeth, polishing finger nails, manicuring, etc., although my improved powder is adapted to be also v used for cleaning and polishing articles of metal, etc.

My process is as follows: I first take a quantity of nitrate of one of the earth group metals, either with or without a quantity of magnesium nitrate, and dissolve the same in distilled water to produce a solution which is preferably about twenty-' five per cent. saturated. I then saturate pure cotton knitting in the solution so prepared, after which I wring out or squeeze out the surplus liquid to a dryness of about one part by weight of liquid to about one part by weight of fiber. I-then dry the fiber and burn it, raising the temperature, preferably in a kiln, to a point where all stickiness will disappear. The temperature required for this purpose will be approximately 2300 F. to secure the best results. The resulting ash constitutes a high grade polishing powder, adapted to be used in dry form and which imparts a brilliant luster to the surfaces to which it is applied. The powder is especially adapted for use in polishing teeth, finger nails, etc., although it may be used to advantage in any case where polishing powder is required. In describing my process as involving the use of cotton fiber, I do not'intend to exclude any equivalent for such fiber.

It will be observed that the composition which results from my process consists of oxids of the above named metals and ash of vegetable fiber. .The fiber is employed principally to facilitate the rocessby promoting thorough subdivision and preventing the other ingredients from settling into a pasty mass when heated. But the ash residue of the fiber also adds to the softness of the product.

Specification of Letters Patent.

Patented Feb. 16, 1915.

Application-filed July 17, 1912. Serial No. 710,004.

Among the earths which are adapted for my purposes are magnesium nitrate and aluminium nitrate. In carrying out my process, I preferably dissolve one pound of magnesium nitrate and one pound of aluminium nitrate in one gallon of distilled water. To this may be added about fifty grams of a solution of cerium nitrate, the resulting powder being given a fluffy appearance and a champagne color by the addition of the cerium nitrate. If desired, any of the other rare earth nitrates may be added or substituted as equivalents for the ingredients above mentioned. For example, beryllium nitrate and lanthanum nitrate may be used, preferably in connection with thorium and cerium nitrate. In any case, the resulting composition constitutes a substantially impalpable polishing powder which possesses suflicient resistance, when used in dry form, to render it peculiarly effective for smoothing and polishing very hard surfaces, and which imparts a brilliant luster to the surface to which it is applied. It will not scratch even the most delicate surfaces. It is effective as a polish for either natural or artificial teeth and for finger nails, the dry powder being merely rubbed over the surfaces or applied by friction of a dry cloth upon which the powder haspreviously been distributed.

.In order to utilize my improved powder practically, I mix it with a, suitable binder, whereby it may be made into cakes or caused to adhere to the surface of a bufling cloth. Sugar may be employed as a binder and will be found quite efficient.

The addition of rare earth nitrates to the described solution not only improves the appearance of the powder by changing it from a dull yellow color to the champagne color produced 'by the cerium, or a pure white, secured by the use of thorium, but the quality of the resulting powder is also greatly improved in that it constitutes a softer and more finely divided polishing powder.

I believe that I am the first to provide means forcalcining a nitrate of the earth groupin such a manner as to produce an impalpable powder, possessing that peculiar quality of resistance, whereby it may be .used dry for polishing extremely hard substances and from which grit is wholly absent and no crushing, grinding or grading is required to produce the resulting powder in a form adapted for commercial use. So far as I am aware, the polishing powders heretofore produced, contained grit and are adapted to be used not only dry but in con- I nection with water or other liquids for polishing purposes, Whereas my improved polishing owder is so impalpable that it is only a apted to be used in dry form. If

mixed with any liquid or applied in Wet form, it slips over the surface to which it is applied without exerting any polishing efiect, this being due to the fact that it is so finely subdivided or impalpable as to be water; 2nd. in saturating a suitable fiber with such solution 3rd. drying the saturated fiber and 4th. reducing the resulting composition to ashes by calcination.

2. The process of making polishing powder, consisting 1st. in preparing a solution of magnesium nitrate, and a nitrate of the earth group metals in water; 2nd. ,in

saturating a suitable fiber with such solution; 3rd. expelling suflicient liquid to leave the composition in approximately equal parts, by weight, of liquid and of fiber,

, 4th. drying the saturated fiber, and 5th. re-

ducing the resulting composition to ashes maaaer by combustion and superheating the ashes to expel stickiness and reduce the product to a dry powder.

3. The herein described composition of matter, consisting of a finely comminuted earth group metal, the particles of which have been separately oxidized by calcination to produce a substantially impalpable powder of such fineness as to be adapted for use only in dry form.

4. The herein described composition of matter, consisting of an oxid of one of the rare earth group metals; combined with oxid of magnesium in the form of a substantially impalpable powder from which grit is absent and which is adapted to be used only in dry form.

5. The herein described composition of matter, consisting in the combination by calcination of rare and common earth group metals, in the form of a substantially impalpable non-gritty powder which possesses a high resistance adapted for polishing the enamel of teeth and other hard substance when applied in dry form.

6. The herein described composition of matter consisting in the combination by calcination of rare and common earth group metals and vegetable fiber, in the form of a substantially impalpable non-gritty powder.

In testimony whereof I aflix my signature in the presence of two witnesses.

JOHN P. CARMICHAEL.

Witness es:

LEVERETT C. WHEELER,

I. BREMER.