US660426A - Samuel grossiord - Google Patents

Description

\ Patentud Oct. 23, I900. S. GROSSIORD. I MANUFACTURE OF ARTIFICIAL STONES. ("a In. (Applioltion fllnd Oct. 6, 1898.)

, pa e. FIG.

F I ail li FI 6.2 M f I 6.4. Q5,

WITNESSES: INVENTOR 8IIMUEL GROSSI'ORD v V v BY I um TNE Noam: PETERS cu. mo roumm WASHINGTON, n. c.

' UNITED STAT S PATENT OFFICE.

SAMUEL GROSSIORD, OF AUX MOUSSIERES, FRANCE.

MANUFACTURE OF ARTIFICIAL STONES;

SPECIFICATION forming part of Letters Patent No. 660,426,- dated October 23, 1900;

Application filed October 6, 1898. Serial No. 6532;837. (Nu specimens.)

To ctZZ whom it may concern.-

Be it known that I, SAMUEL GROSSIORD, lapidary, a citizen of the Republic of France, residing at Aux Moussieres, Jura, in the Republic of France, have invented certain new and useful Improvements in the Manufacture of Artificial Stones, of which the following is a specification.

This invention relates to improvements in the manufacture of artificial stones employed in jewelry.

The object of the invention is to impart to such stones if they are white imitations a scintillation resembling as nearly as possible that of a real diamond and if they are dilferentlycolored imitations clearly-defined and distinct colorations.

The essential feature of myinvention consists in Welding a sheet or plate of windowglass between two blocks of the imitation products commonly termed paste and then cutting the block thus formed in the ordinary manner. On the same principle a white or colored block of the imitation material may be inserted between two plates of window-glass,or,in other words,the above process may be reversed. It is, moreover, possible to use but one single block of white or colored imitation material welded on a single plate of window-glass, which latter after the cutting forms either the base or the top of the stone.

In order that my invention may be thoroughly understood, I will describe the same with reference to the accompanying drawings, in which- Figure l is a perspective view showing two blocks a and b of imitation material of one and the same quality and a sheet or plate 0 of window-glass adapted to be interposed between the two masses or blocks of imitation material. Fig. 1 is a perspective view representing a block Ct of imitation material and two sheets or plates 0 and c of window-glass, between which the said block a is to be interposed. These different pieces are arranged in the order indicated in Figs. 1 and 1 respectively, upon a recess fireproof table and then placed in the furnace in order to efifect the welding together by producing a semifusion of the material under treatment. Fig.

glass.

2 illustrates the aspect which the blocks a and b of imitation material bear after hav ing been welded upon the opposite faces of the plate 0. The appearance is that of a block in which the glass plate 0 separates the two blocks of imitation material a and b. Fig. 2 illustrates the aspect which the block or of imitation material assumes after having been welded between the two pieces or plates 0 c. Fig. 3 shows the aspect of'the blocks a and b of differently-colored imitation materials after the welding upon one plate a.

The blocks thus produced irrespective of whether the masses or pieces of imitation material be colored or colorless are subsequently cut in the ordinary manner, but so that. the parts of imitation material aand b, respectively, form one the top and the other the base, while the window-glass plate 0 forms the crown. I

When the blocks of imitation material CL and b are colorless, the crown c of glass produces the following effect: As the plate 0 of glass is clearer and more transparent than the blocks a and b of imitation materialit, causes the facets cut into the top and the base to more efiiciently reflect and imparts to the stone'thus formed scintillations and a fire similar to that of a real diamond.

When the blocks a and b of imitation subtauce are variously colored, the window-glass crown 0 produces the effect hereinafter indicated. First of all, seeing that the fusingpoint of the glass is higher than that of the imitation substance the window-glass plate 0 has not entered into combination with the blocks 0t and b, which have retained their proper color. Moreover, owing to the transparency of the window-glass the color of the base will when the cutting has been eifected appear all around the stone, without, however, penetrating to the top, where the color remains more intense and appears distinctly in the middle of the stone.

The cutting may of course be effected in any way and the number of facets does not in any manner modify the efiect produced.

Fig. 3 shows by way of modification a block of white or colored imitation material welded onto a plate or sheet a of window- This modification is shown in section and in perspective yiew. The block thus produced is subsequentlycut in such a man'- ner that the glass eith'er forms the base, Fig; 4:, or the top; Fig. 5. Theresult obtained in the case of this modification is identical with that before indicated.

It should finally be observed that in each' one of the preceding examples the face or faces of the imitation substance in contact with the glass plate or plates may be polished prior to the Welding operation.

I claim as my invention 1. As a new article-of manufacture, at artificial stone'for use in jewelry, consisting of clear trans arent Windowlass and aste a name to this specification in the welded together, into a single piece, substan tially as" described.

2; As a new'article of manufacture, an artificial stone for use in jewelry, consisting of a top and bottom piece of paste and an intermediate layer of clear transparent Win- (low-glass elded together into a single piece,

substantially as described.

In testimony whereof I have signed my two subscribing witnesses.

w SAMUEL GROSSIORD;

Witnesses. V

THos. N. ,BRoNNE, MARIUS VIOHOY;

presence of a

Images