US223237A

US223237A - Feancis ed meyeb

Info

Publication number: US223237A
Authority: US
Publication date: 1880-01-06
Anticipated expiration: 1897-01-06

Description

P. E. MEYER.

Gem-Coating.

No. 223,237. Patented Jan 6, 1880 Fig.1

ZVnesses. Iiwmlor.

UNITED STATES PATENT OFFICE.

FRANCIS ED MEYER, OF NEW YORK, N. Y.

GEM-COATING.

SPECIFICATION forming part of Letters Patent No. 223,237, dated January 6, 1880.

Application filed October 25, 1879.

To all whom it may concern A Be it known that I, FRANCIS ED MEYER, of the city, county, and State of New York, have invented a new and useful Improvement in Real or Imitation Precious Stones, Paste, or Composition of Glass; and I hereby declare the following to be a full and clear description of the same.

The invention relates to a real or imitation gem provided with a coating of some reflective substance, wholly or partially covering the back of the stone or imitation stone to increase its brilliancy; and the invention consists in a stone so coated with areflective substance and provided with a supplementary protective coating, substantially such as hereinafter described.

The invention consists, further, in the process of applying the coating, as hereinafter described.

The invention will be readily understood by reference to the accompanying drawings, of which Figure 1 is a front elevation of one of the improved real or imitation stones or gems. Fig. -2 is a side elevation of the same removed from its setting, so as to show the coating on the bottom or back, which, in this case, only extends half-way up the back, so as not to expose the coating beyond orin front of the setting. Fig. 3 is a similar elevation to that shown in Fig. 2, except that the back is Wholly covered with the reflecting coating.

The real or imitation stone, paste, or composition of glass piece Ais cut on its face into any suitable or approved form; but where it is areal diamond or representation of one the face will usually be cut or formed in polygonous shapes, so as to conform to the usual cutting of real or ordinarily-cut imitation stones. The back or rear side of the piece A will ordinarily be formed into the shape of a cone; but this is immaterial.

A coating of some good reflecting substance, B, will be firmly secured to the back or rear side of the piece A, either over the whole surface of the back, as shown in Fig. 3, or only over a part of it, as shown in Fig. 2, the latter form being used where it is desirable to have the backing concealed below the setting.

The reflecting substance B is applied to the piece A in the following manner: First coat all the parts of the said piece A which are to be kept free from the coating or reflectlng substance B with some mat erial which will readily adhere to it for the short time required to put on the coating B, but which will readily come off im mediately thereafter. A coating of wax, or a preparation of asphaltum, or any other suitable article, will answer this purpose very well. This coating should extend up sharply to the line where the coating B is intended to stop. The coating B may then be applied in the form of nitrate of silver or any other highlyreflecting substance, which may be fixed to the piece A on a steam-table, or by. any other suitable device, after which it is covered with a coating of some substance like Japan or shellac varnish, after which a bronze or gilt coat is put on, which will finish the fixing of the part B and form a durable non-adhesive protective coating. After this coating B shall have been thoroughly fixed and finished in this manner the preliminary coating above described may easily be removed, and the part B will then present a clean, sharp .contour; and the effect of this coating will be to vastly increase the brilliancy of the gem, and, if it is an imitation, will cause it to very closely resemble a real diamond or stone, just as the color or appearance may indicate.

Having described my invention, I claim 1. A real or imitation gem provided with an inner coating of a reflecting substance wholly or partially covering the back thereof, a coating of varnish placed upon said reflective coating, and a supplementary outer coating of bronze, which unites with the varnish coating and forms a permanent non-adhesive protective coating, substantially as described.

2. The art or process of coating gems with a reflective substance which consists in first coating that portion of the exterior not designed to receive the reflective coating with a temporary coating ofsome adhesive substance, then applying nitrate of silver or other highly-reflective substance to the exposed surface and fixing the same by means of a steamtable or otherwise, then varnishing the re flective coat, then applying a bronze or gilt coat to supplement and protect the reflective coat, and then removing the temporary coating, substantially as described.

FRANCIS ED MEYER. Witnesses:

M. RANDOLPH, P. E. BAQUE.