US240496A - And charles w - Google Patents

Description

UNITED STATES.

PATENT OFFICE.

PETER APPEL AND OHARLES P. APPEL, OF WEST HOBOKEN, NEWJERSEY,

AND CHARLES W. HIRRLINGER, OF NEW YORK, N. Y.

INCRUSTING AND ENAMELING PRECIOUS STONES.

SPECIFICATION forming part of Letters Patent No. 240,496, dated April 26, 1881..

Application filed May 13, 1880. (No model.)

To all whom it may concern Be it known that we, PETER APPEL and CHARLES P. APPEL, of West Hoboken, in the county of Hudson ,and State of New Jersey,

and CHARLES W. HIRRLINGER, of New York, in the county and State of New York, have invented certain new and useful Improvements in Incrusting and Enameling Precious Stones, of which the following is a specification.

This invention relates to an improved method of incrusting and enameling precious stones, such as onyx and agate; and it consists in first engraving the design into the stone to be ornamented, then pressing or molding a thin plate of gold into the indentation, then removing, enameling, and burning the plate, next replacing and cementing the plate into the stone and finally grinding the surface of the enameled portions flush with the surface of the stone.

In the accompanying drawings, Figurelrepresents a side elevation; and Fig. 2, a detail vertical transverse section of a ring, on line 00 a", Fig. 1, which is incrusted and enameled according to our improved method,

Similar letters of reference indicate corresponding parts.

A in the drawings represents a round, flat, or other shaped piece of onyx, agate, or other precious stone tobe ornamented. This stone is preferably set onto'a frame, B, of gold or other metal, in such a manner that the side flanges of theframe are flush with the surface of the stone, so as to protect the same against breakage. The surface of the stone is ornamented with incrusted gold of difierent colors, and with enameled portions, in the following manner: I

The design to be produced is first engraved into the stone, the portions to be enameled be ing cut of greater depth than theportio'ns which are to be incrusted merely. Into the deeper portions or indentations thin plates O, of gold or other metal, are pressed until they assume the exact shape of the indentations, the plates being then trimmed so as to correspond exactly to the outlines of the portion to be enameled. The plates 0 are next removed from the recess and enameled in the usual wellknown manner. After the colors are burned into the enamel in a muffle the gold plates are replaced and cemented into the indentations, and finally ground'ofi, so as to be flush with the surface of the stone and surrounding cas- The novel feature of our method, to which we specially draw attention, is that the enameled and incrnsted portions are entirely embedded into and flush with the surface of the stone, giving it a highly-ornamental appearance, as the enamel is surrounded by anarrow band ofgold. The enameled portions, being flush with the surface, are not liable to wear ch", as the enamel is when laid on the surface of the stone, so that the articles of jewelry retain always their finished original appearance.

Having thus described our invention, we claim as new anddesire to secure by Letters Patent 1. The method herein described of incrusting and enameling precious stones, consisting in engraving the design upon the stone, then then removing and enameling the plate, next cementing it into the recess, and finally grindin g the surface of the enameled plate flush with the surface of the stone, substantially as set forth.

- 2. As a new article of manufacture, a precious stone for jewelry having incrusted and enameled ornaments set into recesses flush with the surface of the stone, substantially as specified.

In testimony that we claim the foregoing as molding a thin plate in the engraved portions,-

our invention we have signed our names, in 8 presence of two witnesses, this 12th day of May, 1880. 4

PETER APPEL. CHAS. P. APPEL. CHARLES W. HIRRLINGER.

Witnesses:

PAUL GOEPEL, CARL KARP.

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