US530817A

US530817A - Henri francois louis aumont

Info

Publication number: US530817A
Authority: US
Publication date: 1894-12-11
Anticipated expiration: 1911-12-11

Description

(No Model.) I I H. F. L. 'AUMONT. PROGESS 0F INLAYING METAL GOODS WITH TORTOISE SHELL 0R GELLULOIDE Patented '1)e0. 11,1894.

Flo-4- m1 mama.-

WITNESSES. I

A TTOHNE Y5 tortiseshell or celluloid,

ertures in which it is placed, in such manner UNrrnn STATES PATENT Orr-ice.

HENRI FRANcoIsLoUIs AUMONT, or LONDON, ENGLAND.

PROCESS OF lNLAYlNG METAL GOODS SPECIFICATION forming part; of Letters 2 Application filed September 12, 1894. Serial No. 522,803.

To all whom it may concern.-

Be it known that I, HENRI FRANCOIS LOUIS AUMONT, goldsmith, of 7 Oarlisle Street, Soho Square, London, W., England, have invented new and useful Improvements in Processes of Inlaying Metal Goods with Tortoise-Shell or Celluloid, (for which I have obtained Letters Patent in France, dated March 5, 1894., No. 236,758,) of which the following is a full, clear, and exact description.

This invention relates to the inlaying with of watch-cases, jewelry, ornaments, photographframes, cigarcases, and other fancy goods made of gold, silver, or other metal.

The object of the invention is to produce a transparent, enamel-like effect, whether the article inlaid be viewed by reflected or transmitted light.

The invention consists essentially in the mode whereby the tortoiseshell or celluloid is firmly secured in through or unbacked apertures in the plate of metal, without the use of cement, or of any apparent means of retaining the inlaid material, which although flush with'the two faces of the metal plate is caused to interlock with the edges of the apthat it is securely retained therein.

The invention is illustrated in the accom panying drawings, merely by way of example, as applied to a photograph-frame, but it will be evident that the nature of the article and the character of the design may be varied indefinitely.

Figure l is a face view of a photographframe having a design inlaid therein, in ac cordance with the method of my invention. Fig. 2 is a cross-section of the metal plate, through one of the apertures. Fig. 3 is a similar section, with the piece to be inlaid placed in the aperture ready to be pressed, and Fig. 4 is a similar section, showing how the inlaid piece is secured. Figs. 5, 6, and 7,show modifications of the form of the groove in which the inlaid material becomes embedded. Figs. 8, and 9, show how the interlocking of the inlaid material with the metal plate is effected in the case of plates which are so thin that they cannot be conveniently grooved.- All these figures are drawn to a magnified scale, and the same letters of "reference indi- WITH TORTOlSE-SHELL OR CELLULOlD.

(No spe0imens-) Patented in France March 5, 1894, No. 236,758-

b is the plate of metal in which'apertures a are cut or stamped in the ordinary way, in accordance with any floral or other ornamental design. These apertures are prepared to receive and hold the pieces of inlaid material either by having a groove 0 cut in the thick ness of the edge of each aperture, as in Figs. 2, 3, 4, 5, 6, and 7, or by having the edges beveled, as in Figs. 8 and 9. The groove c-would be cut by means of a burin or graving tool and should be about one or two millimeters in depth and it would extend entirely around the aperture so as to form a kind of bezel to hold the piece of inlaid material in the manner of a watch glass. The groove may either be V-shaped in profile, as in Figs. 2,3, and 4:, or it may be of rectangular section, as shown in Fig. 5, or the edges of the aperture may be hollowed or grooved over the whole thickness of the plate, as in Fig. 6. With either of the forms of groove shown in Figs. 2 to 5,'the arrises of the metal may beveled off on both faces of the plate, as shown in Fig. 7, so that a double bond of the inlaid material with the metal will be obtained, this form of interlocking being a combination of the groove before described and the beveled form shown in Fig. 8. In this latter case the edge of the aperture instead of being grooved is oppositely beveled, asin Fig. 8, or rounded, as in Fig. 9, so that the relative forms of the metal and. the inlaid material are reversed, the groove being virtually formed in the inlaid material instead .of in the metal, theinterlocking connection being the same in both cases.

The method of inlaying is as follows:The

tortoiseshell'or celluloid is of greater th'ickness than the metal plate (say one and onehalf to twice the thickness) and is cut in pieces (1 corresponding in shape to, and just large enoughto enter, the apertures a in the metal plate I). All the apertures of the design having been thus filled with the pieces of tortoiseshell or celluloid jected to heat and pressure between two blocks f f of gun metalso as to thereby soften the pieces of inlaid material, compress them until they are but little thicker than the metal plate, and cause them to expand laterally so that their edges become squeezed into the cate the same parts in all of them.

grooves c, as shown in Fig. 4, or become interlocked with the beveled edges, as shown d, the plate is subin Fig. 8. This pressure must be maintained until the whole has become cold, so that the interlocking of the inlaid material and metal may be permanent. The thin film of the inlaid material which has become squeezed out and spread over the surfaces of the plate I) is then filed off until the inlaid material is flush with the metal, as shown in Figs. 4 to 9. The whole is then polished, and the inlaid material may then be engraved or carved to heighten the effect.

The heat required for the pressing operation must be suificient to soften, but not to burn, the inlaid material and the heated gun metal pressure blocks must be coated with a strong solution of sea-salt before the work to be pressed is applied between them or layers of cloth soaked with sea water may be applied between the pressure blocks and the work, the object being to prevent the discoloration of the inlaid material.

I claim- 1. The herein described mode of inlaying metal goods with tortoiseshell or celluloid,

which consists in squeezing the pieces of material to be inlaid, when softened by heat, into interlocking engagement with the grooved or beveled edges of through apertures in the metal, maintaining the pressure until the work is cold, and then removing any superficial excess of the inlaid material,'substantially in the manner described.

2. A plate of metal having pieces of tortoiseshell or celluloid inlaid in it by being squeezed, under the combined eifect of heat and pressure, into interlocking engagement with the edges of through apertures in the plate, substantially as specified. a

Signed by me, the said HENRI FRANCOIS LOUIS AUMONT.

HENRI FRANCOIS LOUIS AUMON'I.

England.