USRE8995E - Improvement in enameling brxo - Google Patents

Description

DEOIUS W. CLARK, or PHILADELPHIA, PEnN'sYLvA JA.

IMPROVEMENT IN ENAMELING B RlCKs Specification forming part of LcttersPatcut No. 152,213,

December 16, 1879;

,To all whom it may concern:

Be it known that-I, DEOIUS W. CLARK, formcrly of Chicago, in the county. of Oook'and State of Illinois, but now of Philadelphia, in the State of Pennsylvania, have im ented anew and useful Improvement in Enameled .-.Bricks; and I do hereby declare that the following is a full, clear, and exact description thereof.

' My improvement relates to anew article of manufacture-viz., a building-brick having an enameled surface or: surfaces of any desired color; and my invention consists in such brick and in the compound employed for. enameling suchbrick. y

To enable others skilled in the art to make and use my new articleof manufacture,I will proceed to describe more fully its construction and the enameling compound used in its construction. 1

In preparing the enameling' compound I take about one hundred and fifty parts of .tluorspar, about sixty parts of" Paris white, about fifty parts-of lime, about fifty parts of oxide of tinor its equivalent, and about fifty parts of kaolin. These ingredients I pulverize and triturate to an impalpable powder, reducing the whole to a homogeneous mass, which I place in a crucible or other suitable vessel and calcine it. After this calcined mass is cooled off it is again reduced to a powder by the pulverizing' process. Sufficient water is then added, and the whole triturated, so that it will form an enameling compound ofabout the consistency of cream. In this compound I immerse that portion of the brick I- desire to enamel, and then subject-it to a heat of sufiioient temperature to fuse the enameling material on its surface,

When .it is desired to make a brick having a black enameled surface, I add the black oxide of cobalt, black oxide of manganese, and

umber to the hereiubetore-named ingredients prior to the pulverizing and calcining process. For a blue enameled surface, the ,black oxide of cobaltis usedin like manner. For a green enameled surface, suboxide of copper is used For a red enameled surface, suboriide ofcopcom pounds,

dated June 23, 1874; Reissue No.

application filed November 8, 1879.

per and red oxide of iron are used. For drab enameled surface,mineral paintknown as. the Brandon mineral paint, mauufactured at Brandon, in the State of Vermont. For

bronze marble, carmine, and other shades and tint-s formed by acombination of the above,

the in grcdients are pulverized and formed into a homogeneous mass, anda suitable quantity of it is added to the ingredients fori'ning the enameling compound to produce the tint desired.

With this cnameling compound hereinbefore described the surface of the ordinary red building-brick may be enameled and any desired shade or tintgiven' to the enameled surfac'e-a result not successfully accomplished prior' to the date of my invention. I am ena bled, therefore, to produce, at a comparatively low cost, building-brick havingan enameled and ornamental surface which is unaffected by the action of heat, frost, or other atmospheric conditions. I o

The ordinary red buildin g-briok herein named is made of any of the clays commonly used in the manufacture of such brick, and burned'in the usual manner.

The surface of the brick to be enameled should be smooth. To this end they should preferably be pressed.\ ..It being obvious that the enameledbrick will only be used for forming fronts and other parts of'the building requiring a fine finish and ornamentation, brick havinga rough uneven surface, or porous, will not answer, for the enameled surface will be uneven in one case and full of smallindentations in the other case.

- I wish it clearly understood that in .this application I do not mean to claim, broadly, the idea of enameling bricks, for modes of enamcling bricks have-been described bymyself, as well as by others,iiu Letterslatent of earlier date. than J one 23, 1874, all of which patents, however, describe a method of cnameling bricks essentially different from that described llL flllS specification in this larly -viz., in the proportions of the various materials used. for the. white and the colored all of which materials and com- S,995, dated shade or respect particu with the com pound 'coinposedof the materials and in the proportions substantially as doscribed, and appliedand permanently fixed to thesurfaceor surfaces of the brick, substantially as set forth.

pounds I have found fioinlarge experiment: and use to be essential to the production of-a ,inei'chantable enameled brick. i

Having thus described my improvement, what I claim as my invention is-,'

1. The enemeiing compound composed of the materials, in tl'lQpI'OpQTfiOnS, end'mixed and prepared, all snbstantialiy as described.

2. As a new article of nmnufactnre;abuildin g-briok with one or more snrfaees ennmeled DECIUS W. CLARK.

Witnesses: t

B. N. DYER, JAS. A. PAYNE.