FR2509589A1 - SERIOUS JEWELERY RING AND METHOD OF ENGRAVING IT - Google Patents

Abstract

EACH DECORATION PATTERN INCLUDES A Z1 CENTRAL ZONE CUT IN STAR AND A Z2 PERIPHERAL ZONE ALSO PREFERABLY CUT IN STAR. THE STAR OF THE CENTRAL ZONE IS OBTAINED BY MILLING BY PRACTING AN ANNULAR C1 SLOT DELIMING A CENTRAL S1 protrusion WITH A CIRCULAR BASE AND BY MAKING DIAMETRAL C2 CROSSES BY MEANS OF A TOOL WITH A TRIANGULAR PROFILE TURNING AROUND A 0 HORIZONTAL AXIS LOCATED APLOMB FROM THE CENTER OF LADITE SAILLIE S1.

Description

Z 509589

  The invention relates to a process for obtaining on a metallic mass phenomena of local shine imitating

that of a cut diamond.

  It has already been proposed to obtain local gloss phenomena by reflection of light on the inclined faces.

  notches made by etching and carving made in the

  mug or with a diamond tool on the visible side of a piece of jewelry, for example a wedding ring

  Until now, no attempt has been made to simulate the present

  that of a cut stone, but only to achieve an effect.

  decorative more by the composition of the design than by its

optical result.

  It is indeed, to give an illusion of a diamond therefore

  complex phenomena of refraction and reflection, re-

  raises a wager when one intends to obtain equivalence

  with only a size in a metal block.

  This is because, in fact, those who had thought of obtaining an adamantine shine by cutting a metal crown in a manner analogous to that used for a brilliant, with its bezels, its halefis and its traditional stars

  found a disappointing result because the opaque metal of na-

  ture can only be the place of superficial reflections.

  It is therefore necessary for an approach to the result to reproduce not only the reflections of the crown, but also those of the breech transmitted through in particular

of the table.

  The applicant sought to produce an engraving having two concentric zones of distinct reflections, all

the two stars.

  Obviously, the engravings of these two areas can be obtained manually at the shop, but not only the cost of this engraving would be such that an alliance which would juxtapose only twenty would be so expensive

  high that there would be no more commercial interest.

  Only the process proposed by the invention makes it possible to obtain

  a satisfactory result by mechanical milling.

  According to this process, an annular recess is practiced in the mass delimiting a central projection with a circular base,

  then cut the diametrical grooves using a milling cutter

  has a triangular profile rotating around a horizontal axis located directly above the center of said projection, said grooves sharing its circumference in a number of equal parts.

  It is advantageous to give this projection a co-

  nique, using to make the annular recess a

  milling cutter with triangular profile rotating around a vertical axis

  cal. So the grooves made transversely in this

  protrusion then cut out the branches of a star The

  luminous yons striking its branches will simulate the reflections -

  xions of the halefis or of the breech corners as they would be seen by transparency of the crown, in particular of the table with a brilliant '

  To complete the illusion, the area outside the hollow

  ring finger is itself cut to form a second

  star concentric with the first.

  Other features and advantages of the invention appear

  will read the description and the claims.

  tions which follow, make next to the drawings in which: Zes Figures 1 and 2 represent an example of engraving

traditional alliance.

  Za figure 3 shows in plan a part of alliance of which

  the decoration is obtained according to the invention.

  FIG. 4 illustrates the first milling phase of the process which is the subject of the patent using the tool shown in the

figure 5.

  Za Figure 6 is a diagram relating to the second

phase of this process.

  As can be seen in Figures 1 and 2, the sets

  known art have no pretension to simulate the shine

  lance-d'une diamant The G engravings are made on the perimeter of the jewel, for example an AD alliance, using

a triangular profile grinding wheel.

  The drawing of Figure 1 is that of a daisy whose

  the petals thus hollowed out as visible in Figure 2 con-

  orge towards a central point K located on the lateral surface

rale of the alliance banner.

  If we compare this figure 1 and figure 3 represents

  both an alliance A decorated with rosettes R for example

  ties on its banner B, from place to place, either of a

  contiguous Ue, be separated from each other, we cons-

tate the difference in result.

  To give a similarity to adamantine hrillance,

  it is necessary to make at least the concave star cen-

  trale because it is its reflection which recalls that of the halefis and breech corners, as it would be seen through the crown of a brilliant and in particular of its table

  Around this central zone ZI formed by a tail part

  star-shaped whose center is the hollow part of

  concavity, one can have a peripheral zone Z 2 equal to

  cut in a cylindrical or frustoconical mass

  lon a star, either concave or convex.

  To obtain a concave star, for example that of zone I in FIG. 3, we start by making a hollow

  annular C 1 which delimits a projection 51, preferably co-

  fuck in the mass of the alliance A threaded on the mandrel

  M of horizontal axis and this, by means of a milling cutter turning

  Advantageously, the diamond setting of this cutter has a

triangular profile.

  The Applicant has observed that an isosceles profile with an angle at the center a = 110 is particularly suitable for obtaining a conical projection 51, provided that the axis of rotation

  of the strawberry be confused with the axis of the cone of this sail-

  lie. In the second phase, we establish a notch (Fig 6) in

  this projection 51, by means of a cutter 02 also to pro-

  Triangular wire (of angia 120), rotating around a horizontal axis O placed vertically above the top of the Si cone. The visible star in Figure 3 is obtained by practicing

  four identical notches intersecting at 45.

  It should be noted that this circular projection If, if it were of another profile, for example spherical, in a drop of tallow, or with a broken generatrix, would lead to notches

  drawing decorations other than a star.

  A star obtained as just described; could be a setting in itself We notice indeed that being

  concave makes it possible to obtain a convergent beam of rays

  inflected which, given the reduced dimensions, appears

  feels to the eye as coming from a concentrating hearth.

  Of course, there is interest in accentuating the similarity with the "brilliant" cut diamond by cutting the zone Z 2 so as to create brilliances similar to those of bezels,

  halefis and stars of the crown of such a diamond.

  A fairly good result is obtained by producing a

  exterior fabric of the kind visible in FIG. 3.

  Of course, the mandrel M can be moved angularly-

  ment along its horizontal axis to multiply the decorations around the perimeter of the jewel which can be a ring ring, a

  alliance, an earring "creole" and even a bra-

celet.

Claims (6)

  1 jewelry ring with engraved decoration   ract 4 ri 8 S in that each of its patterns has a zone   central '(Zl) cut into a concave star and a peripheral zone risk (Z 2) also cut.   2 Method for obtaining a milled decoration by milling   killed with a concave star, for example the one according to the res-   dication 1 characterized in that it is obtained: by making an annular recess (C 1) delimiting a central projection (51) with a circular base, by making diametrical grooves (C 2) by means of a   tool (02) with triangular profile rotating around an axis ho-   rice (0) located directly above the center of said projection (Si), said grooves (C 2) sharing its circumference in a number of equal parts.   3 Method according to claim 2 characterized in that   that the annular recess (C 1) has a triangular section.   4 Method according to claim 3 characterized in that the bottom angle of this recess (Cl) is approximately   5 Method according to one of claims 2 to 4 inclusive   characteristics 4 in that the central projection (Si) has a shape conical or similar.   6 Jewelry ring with decorations including the   central zone is obtained according to one of the pre-   cédentes caract 4 ris 8 in that the shine effect ada-   mantine is completed by the size of a peripheral star   concentric with the star of the central zone.