US1029800A - Wood-oil putty. - Google Patents

Description

Wood-Oil Putty, of which the following is a llNlTE CARLETON ELLIS, OF LAnoHMoiv- *JvnWYRKeassrenoR T0 ELLIS-FOSTER COMPANY,

A conronarr'on on NEW JEns-EY.

woo eacurr No Drawing.

Specification of Letters Patent. Patented June 18, 1912, Application filed November 16, 1907. Serial No. 402,513.

To all whom, z't'mag concern:

Be it known that I, CARLnToN ELLIS, a citizen of the United States, residing at Larchmont, in the county of W'estchester and State of New York, have invented certain new and useful Improvements in specification.

This invention relates to putty; and comprises a dough-like plastic mass containing an inert mineral filler and a vehicle comprising suflicient wood oil to render the mass self-setting throughout, said putty remaining plastic until use and setting to a firm mass after application without becoming brittle, friable and porous.

Putty as formerly made with linseed oil, has the disadvantage of gradually becoming a brittle mass which cracks and falls away from the surface to whichit has been ap-" plied. This is due largely to extreme oxidation of the linseed oil, which in itsfinal stages gives rise to the formation of brittle reslnous products. Linseed oil sets from without inwardly through oxidation, the degree of oxidation increasing with the time of exposure to air until the oil ultimately becomes converted into a resinous perishable mass. This oxidation is attended by and is dependent upon the production of porosity during the oxidation.

My invention involves 'a putty made by the use of Chinese wood oil or similar self setting oil,.such as Japanese wood oil, Hankow oil, Tung oil; and the like, in combination with an extending oil such as mineral oil, and preferably with a resinous body such as colophonium. \Vood oil on exposure to air sets by a molecular change, the nature of which is obscure, and not primarily by oxidation. This setting is not attended with the production of pores. O'n admixture with mineral oils the setting is modified in some way and the compound. vehicle thus produced has set-ting properties which, I find, make it particularly adapted for the purposes of putty. The presence of rosin further advantageously affects this setting. This oily material is used as a basis with which is i corporated an inert filler, such as whiting (g; ener us to ive the necessary plastlclty to the mass. uitable inert mineral powders are whiting, ground lime-stone, mcludother mineral powder or thick' ing dolomitic lime-stone, marble dust, alumina, magnesium carbonate, barytes, kaolin, talc, ground soap-stone, and the like.

Whatever inert filler is employed, itshould be as finely powdered as possible and substantially free of grit and metallic partioles. The ordinary uses of putty require that it be extremely fluent ,in order that itmay properly fill cracks and crevices to which it is applied. The presence of even a small amount of gritty or metallic particles seriously affects the fluency of putty and may render the putty valueless.

I may also incorporate some oxidizable oils of a marked drying nature, including small proportions of linseed oil, or larger proportions of semi-drying oils, such as corn oil. Thus it becomes possible to produce compositions comprising a plurality of oils or drying oils including wood oil.

An illustrative formula representing the composition which I now consider the preferred embodiment of this invention, is made by melting twenty-five parts of rosin and adding thereto sixty parts of mineral oil having a specific gravity of about .865, and fifteen parts of Chinese wood oil. When this oil stock is thoroughly blended by suitable heating, it may be mixed with five hundred parts of a mixture of twenty parts of barytes and eighty parts whiting. The mixture is thoroughly ground together, preferably by trituration in a chaser or edge runner.

The proportions given in the above formula may, of course, be varied more or less to produce putties having different degrees of plasticity.

' The use of wood oil as well as rosin in this composition gives rise to a highly coherentputt-y and this peculiar cohesiveness makes the material unusually plastic and resistant to weathering action. Under the influence of light and exposure, and in pres- Wood oil therefore produces a 'puttyhaving properties differing from and reously and yet the putty does not at any time adh'ere so firmly to the surfaces to which it may be applied, but that it may be removed with little difiiculty whenever desired by the application of a putty knife or whiting.

a scraping tool.

Another illustrative formula comprises 20 parts of wood oil, parts of paraflin oil, 20 parts of rosin and 420 parts of China clay. The rosin may be omitted or replaced by the mineral oil.

A very desirable composition may be made by mixing 20 parts of wood oil with 80 parts of mineral oil or equivalent oily material having little or no real drying properties, and grinding this oil stock with 400 parts of a mineral thickener such as By varying the proportion of wood oil, varying setting speeds may be obtained. Unlike linseed oil and mineral oil mixtures, wood oil confers upon the putty highly desirable properties, which render its adaptation to this art, of unusual value.

I have observed when using whiting as the filler or thickener that red oil, or com mercial oleic acid, or even pahnitic and stearic acids act as assistants to the wood oil, in securing a perfect blend and coherency. It is possible that the formation of a lime soap occurs to some extent in this case under the niechanical operation of grinding. A formula containing red oil comprises Wood oil 10 parts. Red, oil 5 Mineral oil Corn oil 2O \Vhiting 400 Eighteen parts by weight of.

a short time when two parts of wood oil are added and the composition well ground in an edge runner.

What I claim is:

1. A self-setting putty comprising an inert 'mh'erulent mineral filler in predominating amount, said filler consisting mainly of whiting, and being substantially free of metallic particles and a vehicle comprising wood oil in sufficient amount to cause the composition to be self-setting throughout.

2. As a. self-setting putty, a plastic, doughlike composition comprising wood oil and an inert filler consisting mainly of whiting, and being substantially free of metallic particles, said wood oil being in amount sullicient to cause the composition to be selfsetting.

3. As a self-setting putty, a plastic, doughlike composition comprising wood oil, mineral oil and an inert filler comprising a substantial amount of whiting, and being substantially free of metallic particles, said wood oil being in amount sufficient to cause the composition to be self-setting.

4. A putty consisting of a plastic doughlike composition comprising mineral oil, rosin, wood oil and a finely powdered mineral thickener.

5. A putt-y consisting of a plastic doughlike composition comprising as the oil stock, about eighty (80) parts of mineral oil, and about twenty (20) parts of wood oil; and as the mineral thickener, about four hundred (400) parts of whiting.

(S. A putty consisting of plastic doughlike composition comprising mineral oil, rosin, wood oil and a finely powdered min eral thickener containing whiting.

7. A putty consisting of a plastic doughlike composition comprising mineral oil, a resinous body, wood oil and a finely powdered mineral thickener.

8. A putty consisting of a plastic doughlike composition comprising a non-drying oil, a plurality of oils having drying properties, including wood oil, and a thickener, including Whiting.

In testimony whereof I have atlixed my signature in presence of two witnesses.

CARLETON ELLIS.

Witnesses:

NATHANIEL L. FOSTER, H NRIETTA BERxwrrz.