Decorative element comprising a number of stones which are assembled within a closed frame, comprising two decorative faces

Abstract

A decorative element including a number of stones (4) assembled in a closed frame (2) to form two decorative faces. The stones include two opposite external faces (10, 12) which are decorative, and internal faces serving as joints (20, 22) between these stones, and as edging (24, 26) with the interior contour of the frame (32). Some of these internal faces (22, 24) have grooves (28) arranged inside the volume of the frame (2) and accepting strips (34) the ends of which cross the contour of this frame at two opposing points in order to be secured. The decorative element is characterized in that the interior contour (32) of the frame (2) has a protruding cross section which fits into corresponding channels made in the internal edging faces (24, 26) of the stones (4). Applicable for example to the creation of jewelry.

Claims

1. Decorative element comprising several stones (4) assembled in a closed frame (2) to form two decorative faces, the stones having two opposite external faces (10, 12) which are decorative and internal faces (20, 22) serving to join these stones together, or as an edging (24, 26) to join with the frame's interior contour (32), some of these internal faces (22, 24) having grooves (28) arranged inside the volume of the frame (2), for receiving bars (34), the ends of which cross the contour of the frame at two opposing points in order to be secured, wherein said decorative element is characterized in that the interior contour (32) of each side of the closed frame (2) has a protruding section which fits into corresponding channels made in the internal edging faces (24, 26) of the stones (4).

2. Decorative element according to claim 1, characterized in that the contour of the frame (2) has a constant cross section, roughly triangular, comprising on the outside (30) a flat face and, on the inside, two faces (32) defining a protrusion.

3. Decorative element according to claim 2, characterized in that the two faces (32) defining the protrusion are flat or curved.

4. Decorative element according to claim 2, characterized in that the two faces (32) form with one another at their edge an angle whose value is comprised between 80 and 150.

5. Decorative element according to claim 2, characterized in that the two faces (32) form with one another at their edge an angle whose value is comprised between 100 and 135.

6. Decorative element according to claim 2, characterized in that the two faces (32) form with one another at their edge an angle whose value is 120.

7. Decorative element according to claim 1, characterized in that the contour of the frame (2) is entirely integrated in the channels of the internal edging faces (24, 26) of the stones (4).

8. Decorative element according to claim 1, characterized in that each bar (34) has a cross section that adjusts without any play in the corresponding grooves (28) of the stones (4) that receive said bar.

9. Decorative element according to claim 1, characterized in that the bars (34) are placed in parallel to one another inside the frame (2).

10. Decorative element according to claim 1, characterized in that the bars (34) converge to intersect virtually at a point situated outside the frame (2).

11. Decorative element according to claim 1, characterized in that the bars (34) are partly integrated in the protruding shape of the interior contour (32) of the frame (2).

12. Decorative element according to claim 1, characterized in that the frame (2) has a rectangular shape and receives stones (4) also having a rectangular shape that are aligned along rows parallel to the bars (34).

13. Decorative element according to claim 1, characterized in that the median plane of the frame (2) comprises curvatures.

14. Decorative element according to claim 1, characterized in that at least one of its stones (4) has a projection (36), wherein the projection (36) extends from the stone (4) to cover a section of the bar (34) not within the corresponding groove (28) of the stone (4) with the projection (36) or within the corresponding grooves (28) of adjacent stones (4).

15. Decorative element according to claim 1, characterized in that the bars (34) cross the contour of the frame (2) through an adjusted slit.

16. Decorative element according claim 1, characterized in that the bars (34) comprise a flat section placed in the median plane of the frame (2).

17. Decorative assembly (60) having two opposite decoration faces, characterized in that it comprises different juxtaposed decorative elements (1, 51) made according to claim 1.

18. Decorative element according to claim 1, characterized in that the protruding section of each side is contiguous with the protruding section of any adjacent side to form a continuous protruding section along the entire interior contour (32).

19. Decorative element according to claim 1, characterized in that the frame (2) has a constant cross section.

20. Decorative element comprising several stones (4) assembled in a closed frame (2) to form two decorative faces, the stones having two opposite external faces (10, 12) which are decorative and internal faces (20, 22) serving to join these stones together, or as an edging (24, 26) to join with the frame's interior contour (32), some of these internal faces (22, 24) having grooves (28) arranged inside the volume of the frame (2), for receiving bars (34), the ends of which cross the contour of the frame at two opposing points in order to be secured, wherein said decorative element is characterized in that the interior contour (32) of the frame (2) has a protruding section which fits into corresponding channels made in the internal edging faces (24, 26) of the stones (4) and wherein at least one receiving bar (34) crosses the contour of the frame (2) through an adjusted slit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be better understood and other characteristics and advantages will appear more clearly by reading the following description given by way of example, with reference to the attached drawings in which:

(2) FIG. 1 is a perspective view of a decorative element according to the invention, comprising a frame garnished with cut stones, fastened to a suspension ring;

(3) FIGS. 2 to 4 are different views of a single cut stone, intended for being mounted in one angle of the frame;

(4) FIG. 5 is a perspective view of the frame comprising only the bars;

(5) FIGS. 6 to 8 are, respectively: a view from below, a longitudinal cross-section view along the section plane VII-VII and a transverse cross-section view along the section plane VIII-VIII of this decorative element during the course of assembly, having received a row of stones;

(6) FIG. 9 is a longitudinal cross-section view of a decorative element comprising a curved frame; and

(7) FIG. 10 is a side view of a decorative element comprising an assembly of curved frames.

DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION

(8) FIG. 1 presents a decorative element 1 forming for example an item of jewelry, comprising a rectangular closed frame 2 receiving inside three vertical rows that are arranged along a longitudinal direction and which each comprise three cut stones 4. Each stone 4 has two opposite external sides located on the upper side and on the lower side of the frame 2, which are cut to achieve an essentially flat decorative element 1 comprising two decorative faces. The upper face of each of the stones 4 exhibits in the proposed example a so-called facet or facetted cut, but this cut could just as well be buff top or in the form of a cabochon, the choice being dependent on the order given by the recipient of the decorative element and/or dependent on the shape of the stones available to the gem cutter.

(9) The stones 4 are assembled in a jointed fashion and fastened so as to achieve a good mechanical strength of the assembly whilst entirely covering the frame 2 in a front view for each side of the decorative element 1.

(10) A first ring 6 welded onto a small side of the frame 2 receives a fastening ring 8 that, for example, enables a chain to pass through to obtain a pendant.

(11) Each stone 4 comprises, in addition to its two external faces, a rectangular contour that ensures either the junction with other juxtaposed stones or the contact with the edge of the frame 2.

(12) In particular, according to the arrangement in the frame 2, each stone 4 comprises one or two transverse faces 20 serving to join with stones located in the same row, above or below, and one or two longitudinal faces 22 serving to join with stones located at the same height or roughly at the same height in the neighboring rows.

(13) Furthermore, with the exception of the central stone 4 which has only transverse and longitudinal faces that serve to join with neighboring stones, each stone 4 can have either a transverse edging face 26 in contact with the inside of a transverse edge 2a of the frame 2, or a longitudinal edging face 24 in contact with the inside of a longitudinal edge 2b of this frame, oras regards the four angle stonesboth a transverse edging face 26 and a longitudinal edging face 24.

(14) An assembly is thus made of cut stones 4 that can comprise, for each stone, different shapes, materials, colors or types of cut, as well as if applicable different lengths and/or different heights, wherein said assembly has a decorative surface showcasing these stones and additionally concealing the frame 2 as well as the stone fastening means. In particular, as has been mentioned previously, it is possible to achieve different known types of cut, notably with classic facets, with a single facet, pyramidal, buff top or sugarloaf. These cuts can additionally be made at different heights.

(15) As a variant embodiment, the frame 2 can have a shape different from rectangular, for example hexagonal or even circular, or even constitute a motif representing a heart or a trefoil.

(16) FIGS. 2 to 4 present a stone 4 intended (A) for being mounted in an angle of the frame 2, comprising a facet cut on an external face 10 and a so-called buff top cut on the opposite external face 12.

(17) The angle stone A comprises four different joining or edging faces, namely a transverse joining face 20, that is entirely flat, a longitudinal joining face 22, that is also flat, with a central groove 28 having a rectangular section, a transverse edging face 26 having a beveled channel covering the entire face, and a longitudinal edging face 24 comprising the same beveled channel, with at the bottom a central groove 28 similar to the preceding one. The grooves 28 having a rectangular section are located in the median plane of the frame 2.

(18) Stone B immediately next to the stone A has the same transverse faces 20 and 26 as well as the same longitudinal joining face 22, with its central groove 28, and it is thus different from the angle stone A only through the simple fact that the longitudinal edging face 24 of the latter is replaced by a joining face identical to face 22.

(19) Stone C immediately above the angle stone A has in common with the latter its two longitudinal faces 22 and 24 as well as its transverse joining face 20 and is thus distinguished from said stone A only by its other transverse face, which is also a joining face 20, and not an edging face 26.

(20) Finally, the central stone D has two transverse joining faces identical to 20, entirely flat, and two longitudinal joining faces identical to 22, i.e. flat and provided with a central groove 28.

(21) FIGS. 5 to 8 show the frame 2 having a contour comprising a constant section that is roughly triangular, having on the outside 30 a flat face and on the inside two resting faces 32 that intersect and that thus define with each other a V-shaped protrusion whose central edge is located in the median plane of this frame, said protrusion adjusting perfectly and entirely in the beveled channel of the edging faces 24, 26.

(22) The two resting surfaces 32 are either flat or curved, and in the latter case they can be either convex or concave. The edges of the beveled channel are congruent with the aforementioned resting surfaces, i.e. they are either flat or curved in a concave shape or curved in a convex shape.

(23) Preferably, the angle that the two resting surfaces 32 form with one another at their edge has a value comprised between 80 and 150 and an even more privileged manner it is preferably comprised between 100 and 135 and ideally in the vicinity of 120.

(24) An angle of less than 80 would require the stones to be cut to have very acute, and thus more fragile, edges.

(25) As a variant embodiment, other forms of cross section for the contour of the frame 2 could be used, provided that there is a corresponding channel cut in the edging faces 24 and 26 of the stones 4.

(26) Four parallel bars 34 having a flat section located in the median plane of the frame 2 are placed along the longitudinal axis of this frame and cross each transverse side through an adjusted slit. Other cross sections for the bars could also be chosen, such as a circular cross section for example.

(27) The four bars 34 are regularly spaced depending on the width of the frame, wherein the two lateral bars 40, 46 reached the longitudinal sides of the frame 2 are each partly integrated in a groove provided in the V-shaped protrusion 32 of these sides.

(28) In one embodiment, if the internal protruding shape 32 of the frame 2 is sufficient for fixedly holding the juxtaposed stones, it is possible not to use the lateral bar 40, 46. Each of the bars 34 has a section that perfectly adjusts, i.e. without any play, in the corresponding grooves 28 of the stones 4 that accommodate said bar.

(29) The bars 34 are prepared with a greater length than that of the frame 2 so as to be easily handled and introduced into the slits of the sides of this frame.

(30) In particular, the frame 2 and the bars 34 can be made of a gold alloy. It is also possible to use other metals and alloys, such as brass or nickel silver.

(31) The assembly of the decorative element occurs as follows.

(32) If it proves necessary, a first lateral bar 40 is placed in position on a longitudinal side of the frame 2 by making it slide into its slits. A first row of stones 4 is installed on this side of the frame 2 by making said stones slide one by one in a horizontal plane so as to adjust the V-shape of the interior contour 32 of this frame in the beveled channels of the edging faces 24, 26. Furthermore, for the longitudinal edging faces 24, the grooves 28 of these faces receive the first lateral bar 40 which adjusts inside it.

(33) The second bar 42 is put in place by making it slide in the following slits of the frame 2 and in the grooves 28 of the longitudinal joining faces 22 of the stones 4 already installed.

(34) The second and third rows of stones 4 start to be installed in the frame 2, by making them slide in a horizontal plane so as to adjust the grooves 28 of the longitudinal edging faces 22 on the second bar 42 and the beveled channels of the edging faces 24, 26 on the V-shaped protrusion 32 of the sides of this frame.

(35) In parallel, the third bar 44 and fourth bar 46 are advanced in the grooves 28 of the longitudinal joining faces 22 and edging faces 24, following the installation of the relevant stones 4, to block them as they are positioned.

(36) A progressive placement of the stones 4 and the bars 34 is thus effected until the positioning of the last stone, which is blocked by the last bar that is put in place in order to ensure a complete hold of the whole ensemble once the assembly has been completed.

(37) It will be noted that the assembly procedure of the stones 4 and of the bars 34 can vary depending on the number of rows and the shape of these stones.

(38) In the end, the extremities of the bars 34 extending beyond the frame 2 are cut, then these bars are welded on this frame in order to ensure they are held definitively. Finishing operations, such as for example polishing the soldering burrs, to obtain smooth and shiny surfaces, can then be carried out.

(39) As the sides of the frame 2 comprise an internal protrusion 32 that is entirely integrated in the channels of the edging faces 24, 26 made on the stones 4, the frame does not appear on the two faces of the decorative element 1. If furthermore the creator of the decorative element, generally a gem cutter, has taken good care to perfectly adjust the transverse joining faces and the longitudinal joining faces of the neighboring stones A, B, C and D, the bars as well will be totally invisible. Thus, only the assembly of the stones 4 on each of the two faces of the decorative element 1 will be seen.

(40) The contour of the stones available to the gem cutter may not always be rectangular. As a variant embodiment, the recipient of the decorative element may wish for the latter to comprise stones whose contour is trapeze-shaped or even having a rectangular trapezoidal contour.

(41) Obviously, in these two exemplary cases, the bars 34 will thus not be parallel to one another but will converge to intersect virtually at a point situated outside the frame.

(42) By the same token, if the decorative element to be made is to represent a motif, for example a trefoil or a heart, or even if it must have a hexagonal, circular or any other complex shape, it is obvious that the bars will not necessarily be parallel to one another. The contour cut of each stone constituting such a decorative element will then be made so that, according to the invention, said stone comprises at least one internal joining face and, if necessary, one or several internal edging faces, all being such that the bars are all entirely concealed by the assembled stones.

(43) FIG. 9 represents a decorative element 51 comprising a frame 2 having a curvature along its longitudinal direction, wherein the bars 34 thus obviously have an identical curvature.

(44) The stones 4 are similar to those presented previously, with however central grooves 28 of the longitudinal joining faces 22 and edging faces 24 that are slightly larger in order to be able to receive in an adjusted manner the bars 34 with their curvature. The channels of the longitudinal edging faces 24 of the stones 4 are also adapted for receiving the internal protrusion 32 of the frame 2 that follows the curvature of this frame.

(45) The assembly of this decorative element 51 proceeds in the same manner, with the curved bars 34 being introduced in the grooves just large enough to ensure the corresponding stones 4 are locked.

(46) It will be noted that the median plane of the frame 2 could comprise a curvature in the transverse direction, or combined curvatures following both directions.

(47) FIG. 10 shows an assembly 60 of decorative elements 1 and 51, wherein the curved elements 51 can have a concaveness turned in one direction and then in the other, so as to obtain large surfaces covered with stones cut on both faces, without ever letting the frame become apparent.

(48) In the case where the curvatures of such a decorative assembly 60 were to be highly increased, i.e. in the case where the radius were small and there would therefore be a risk of letting a very small part of a bar 34 become visible, it would then advantageously be provided for one of the stones 4 to present, above such a place, a projection 36 in the shape of a molding, such as illustrated in broken line in FIG. 10.

(49) It is notably possible to make, along the same principle, flat or curved surfaces having different contours, with varied colors, to achieve particular decorative forms.

(50) It will incidentally be noted that the execution of the invention has the additional advantage of considerably increasing the number of stones that can be used within the frame of the execution of a decorative element.

(51) Indeed, according to the patent FR764.966 that constitutes the closest prior art document, the use of rails having a T-shaped cross section, i.e. the only cross section for making a decorative element sufficiently resistant to pressure, requires the assembled stones to all be cut so as to have a base with a considerable height in order to make less visible inasmuch as possible the extremities of the cores of the T-shaped rails on which the bases rest.

(52) The fact that, thanks to the invention, the stone fastening means are henceforth free from such cores makes it possible to use flat stones, at least stones considerably less high than previously; the quantity of stones available for making a decorative element is thus increased.