FR2598297A1 - Closed setting with screw - Google Patents

Abstract

Device for setting stones. The invention relates to a device enabling stones to be set by screwing in order to make it possible to remove, change, check and clean the latter. It consists of a male casing, Figure 4, which is threaded 5, pierced 8, with a lip 7 and milling 4 making it possible to receive the culet (collet) of the stone. It consists of a female casing, Figure 2, which is threaded 2 with a lip 1 matching the configuration of the stone. The female casing, Figure 2, is screwed onto the male casing, Figure 4, and encloses the stone 3 placed on its housing 4 with the aid of the lip 1. The device according to the invention is intended particularly for setting precious, semi-precious and synthetic stones.

Description

SERTI CLOS A SCREW
The present invention relates to a device for setting precious, semi-precious, synthetic stones. This device can be manufactured in metals, precious metals, synthetics or wood.

 The device according to the invention allows the interchanceability of the stone to adapt a stone of different color.

 The device according to the invention allows rapid disassembly of the stone for cleaning, checking, all without the intervention of a professional.

The traditional closed setting process is carried out using a cutter:
- the inside of a socket is milled vertically so that the stone penetrates to the height of the table for stones of 1 to 3 min, at a third of the table for larger diameters.

 - 1 stone is planted parallel to the setting.

 - it is crimped to the convex mass always opposite.

 - with a bell cutter, we cut the crimp bevel and then brown.

 - with a tab chisel, we touch up the interior bevel.

 The disadvantages of this system are numerous.

 It requires a lot of concentration and precision when adjusting the stone in its housing. The quality of the setting will depend on this operation.

 Significant risk of breakage, scratches and scratches in the stone during setting and setting.

 Lack of applomb of the stone at the end of the setting.

 Irregularity of the metal net around the stone thus requires a recovery at the yard.

 Final stone fixation.

Labor, for crimping, expensive and long, very open made in subcontracting.

 The setting cannot be reused for another stone.

 In fine jewelry to minimize the risk of breakage compulsory use of 24 karat gold very malleable with infinite care if the stone is frosted (emerald).

 The device according to the invention overcomes these drawbacks.

 This device comprises a male cylindrical case with a bumper rim at the base and a conical milling inside the cylinder in its upper part, the case is drilled right through in the axis for the lightening of the metal and the passage light.

 This device comprises an internally threaded female cylindrical case, which is screwed onto the male case in order to block the applomb stone with a diameter less than the inside diameter of the female case using a border obtained on the upper part of this case, this border follows the angle of inclination of the stone.

 This device comprises a female cylindrical case, the upper part of which is closed inwards. This female case has a cylindrical part, diameter 1, on its upper part. The tube is closed on itself inwards so that its diameter is less than the diameter.

Thus the interior surface of this upper part constitutes a housing preventing a stone placed inside the female case from coming out through the upper part.

 This upper part can be obtained by pushing back or by a bore in the non-opening axis of the female case with a diameter 2 and a finishing by a drilling with a diameter smaller than the diameter 2.

 This upper part may include machining or recess for imitation of crimping claws and lightening of the metal.

 This upper part can be manufactured to match all forms of stone (flat, angular, convex recess).

 According to variants instead of the thread of the male case and the thread of the female case, a smooth part is envisaged. The female case will slide on the male case, this to facilitate the setting of stones of various shapes.

The male case and the female case being in the shape of the stone to be crimped.

 This device includes the possibility for double security of sticking with a quick glue drying in a few seconds the male case on the female case once screwed.

 To change the stone, immerse the jewelry in a container with trichlorethylene, the female case will unscrew once the glue has dissolved.

 The accompanying drawing illustrates the invention. Figure 1 shows in perspective the system with the top female housing in the middle a stone, below the male housing. Figure 2 shows the male case in section. Figure 3 shows the stone seen from the side. Figure 4 shows the female case in section.

 The device according to the invention is particularly intended for enclosing a stone by screwing by screwing the female housing onto the male housing.

 Position the stone (3) in its housing (4) the female box in figure 2 is screwed using its thread (2) on the male box in figure 4, threaded (5). The rim (1) will position the stone (3) in its housing (4) which will come into abutment on the rim (7), the stone (3) will be held by the rim (1), (6) being a groove clearance for thread.

Claims (8)

 1) Device for enclosing a stone characterized in that it comprises a male box in FIG. 4 having a housing (4) on which the stone is positioned and a female box in Figure <2) fixed on the male box in figure (4) with an inward shape (1) matching the stone and ensuring the correct positioning.  2) Device according to claim 1 characterized in that the thread (5) constitutes a male housing part in Figure 4 an area of greater thickness forming the stop (7).  3) Device according to claim 7 or claim 2 characterized in that the housing Figure 4 is drilled right through by a hole (8).  4) Device according to any one of the preceding claims, characterized in that the box in FIG. 4 comprises a housing (4) in its upper part allowing the stone to be put in place.  5) Device according to any one of the preceding claims, characterized in that the female box in FIG. 2 comprises a thread (2) serving to screw it onto the male box in FIG. (4).  6) Device according to any one of the preceding claims, characterized in that the female housing in FIG. 2 comprises in its upper part, a flange (1) conforming to the configuration of the stone to be positioned.  7) Device according to any one of the preceding claims, characterized in that the male case is smooth in its outside diameter and the female case is smooth in its inside diameter.  8) Device according to any one of the preceding claims, characterized in that the female box in FIG. 2 has in its upper part an inwardly machined rim for imitation of the crimping claws.