US1418347A - Protected metal article - Google Patents

Description

PatentedJune 6,1922. l

J. H. YOUNG. PROTECTED METAL ARTICLE. APPLrcAnoN man MAR. 26. |921.

mman STATES eA'rENr orifice.

mmrsnowaan reune, or PITTSBURGH, rannsrnvama, Assieme rc n.- H. ROBERTSON COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

PROTECTED METAL ARTICLE.

Specification of Letters Patent. Patented June 6, 1922.

Application mea 'Maren as, 1921. serial No. 455,967.

To all whom z'tmay comem:

Be it known that I, JAMES HOWARD YOUNG, a citizen of the United States, re-.

j article of that character in which an article of corrodible metal, such as iron or steel, is protected against corrosion by a layer of asphalt or like bituminous material alone or in conjunction with layers of fibrous material, such as asbestos,wool, or other fibrous felts. l

Protective metal articles of the character described are efficient against corrosion as long as the bituminous layer remains intact,

but where the bituminous layer is exposed,

it is subject'to the deleterious action of light, heat, and atmospheric conditions; also to abrasion and other-"mechanical actions in handling, crating and' shipping, and in some cases to injury by .adhesion of one protected article to another.

Thepresent invention has for its object to provide ,a protected 'metal article of the character described, which posessesv all of thev advantageous features of the protected articles above referred to, and in addition possesses highly desirable features not possessed by them, among which may be mentioned, high light and heat refiecting properties, Whlch enable the' protected article to be edectively used in warm climates, as Well as in cold climates, andv which can be given any surface color desired with any drying oil` paints. Also the detrimental effects ofA abrasion and other mechanical. actionsas` well as adhesion are avoided.

` substantially non-corrodible metallic layer which is adhesively affixed to the cor-rodible metal 4article by the interposed layerof hydrocarbonaceousmaterial.

l yThe layer of relatively non-corrodible metal may consist of finely divided metals,

, tected metal article which have high light and heat refiectingpro erties, as will be described.

' hese and other features of this invention will be pointed out in the claims at the end of'this specification. v

Fig. 1 is a plan view of one form of proembodying this invention, and

Fig. 2, a section on an enlarged scale on the line 2--2, Fig. l.

Referringto the drawing, a represents an article of corrodible metal, such as iron or steel, which may be rigid or flexible and ofany form, and which is herein represented as a metal sheet.

The metal article a is provided with a protective layer b of asphalt or hydrocarbonaceous material of like character, which may be applied in any suitable manner as bypassing the article t through a bath of melted asphalt, and to the layer b is applied layers c of asbestos, wool or other fibrous felt, which is provided with a layer d of asphalt or like hydrocarbonaceous material. The protected metal article thus described is provided with an outer surface of asphalt or like hydrocarbonaceous material, which is black or dark colored and open to the objections inherent in asphalt and like hydrocarbonaceous materials. 4

In accordance with the present invention, the protected article is provided with a relatively thin fiexible layer e of substantially or relatively non-corrodible` light colored metal, preferably aluminum, but which may be copper, zinc or other well-known pigments used in the so-called bronzing li uids. These pigments may be applied to the ituminous surfaces while the latter are hot and tacky and in condition to permit the pigments being firmly embedded in the same, or as may be preferred, the pigments may be applied in the form of a paint, in which case, the paint is provided with a vehicle fory the pigment which exerts no appreciable solvent action on the bituminous surface and which when `dry forms a firm, elastic, weather-resistingfilm, which Ais not tacky,

and which isl a-good light and heat reflector. A

tively non-corrodible metal, preferably aluminum, and using a solvent for the cellulose 1 inactive on asphalt or like h which is volatile and practically l drocarbonaceous material. A suitable so vent may be compounds,

vobtained, by mixing about 20% acetone with about 20% glacial acetic acid andv about 55% ethyl-l alcohol. If desired a suitable softening agent such as castor oilwmay be added to the paint.

The aluminum or other light colored non. corrodible metal in a finely divided con dition is bound together by the cellulose nitrate or acetate binder and is present in suliicient quantity in the paint, to thoroughly coverv the bituminous layer to which it is applied and thoroughly and effectively protect the same against the extraneous influences ofthe atmosphere, gases and fumes, and effectively seals the volatile constituents of the bituminous layer, thereby prolonging the protective valuel of said layer, and in ad dition reflects light and heat so efficiently as to enable the protected metal article ,to be used in Warm climates .as Well as in the cooler or cold climates.

Furthermore the bright metallic exterior layer affords protection for the bituminous layer against abrasion, and avoids sticking miam minous or likehydrocarbonaceous material covering said corrodible metal, and a layer of finely divided relatively non-corrodible `metal adhesively aiiixed to said .hydrocar- 45 bonaceous material.

2. As an improved article of manufacture, a protected metal article comprising an ar-v ticle of corrodible metal, a layer of bituminous or like hydrocarbonaceous material "covering saidcorrodible metal, and a layer of relatively non-corrodible metal adhesively .affixed to said hydrocarbonaceous layer and composed of nely divided light colored relatively non-corrodible metal united by a binder 0f cellulose derivative.

3. As an improved arti-cle of` manufacture, a protected metal article comprising an article of corrodible metal, a layer of bituminous or like hydrocarbonaceous material 50 covering said corrodible metal, and a 'relatively thin layer of relatively non-corrodible metal adhesively affixed to the corrodible metall article by said hydrocarbonaceous 4. As an improved article of manufacture, a protected metal article comprising an article of corrodible metal, a layer of 'bituminous or like hydrocarbonaceous material coveringsaidl corrodible metal, and a layer metallic '1n appearancegand consisting vof a cellulose derivative and comminuted` material metallic in appearance.

5. An article having applied Athereto a layer of bituminousv or like hydro'carboria-v 75 ceous materialand an insolublesweather-resisting layer composed of a comminuted bright metal and a binder of cellulose.

In testimony whereof, I have signed my name to this. specification;

JAMES HOWARD YOUNG.

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