EP1319350A2 - Verfahren zur Herstellung von mehrfarbigen Schmuckstücken - Google Patents

Verfahren zur Herstellung von mehrfarbigen Schmuckstücken Download PDF

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Publication number
EP1319350A2
EP1319350A2 EP02027850A EP02027850A EP1319350A2 EP 1319350 A2 EP1319350 A2 EP 1319350A2 EP 02027850 A EP02027850 A EP 02027850A EP 02027850 A EP02027850 A EP 02027850A EP 1319350 A2 EP1319350 A2 EP 1319350A2
Authority
EP
European Patent Office
Prior art keywords
product
multicolor
coated wire
precious
unfinished product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02027850A
Other languages
English (en)
French (fr)
Other versions
EP1319350A3 (de
Inventor
Giuseppe Disegna
Michele Pegoraro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAC SpA
Original Assignee
LAC SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LAC SpA filed Critical LAC SpA
Publication of EP1319350A2 publication Critical patent/EP1319350A2/de
Publication of EP1319350A3 publication Critical patent/EP1319350A3/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C11/00—Watch chains; Ornamental chains
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49588—Jewelry or locket making

Definitions

  • the present invention relates to a method of making a multicolor product with longitudinal development of precious material particularly adapted to be used for manufacturing wearable multicolor ornamental articles such as armlets, necklaces and the like.
  • More particularly said techniques provide for making an unfinished product with continuous longitudinal development from which it is possible in some cases to make a plurality of rings that are linked together and, in other cases, a continuous strap which is spirally wound around a flexible core.
  • a first known technique to make such ornamental articles provides for covering some zones of the article with a galvanic deposition of precious metal such as gold, of a different color relative to the precious metal by which the article is made.
  • a first drawback of this technique consists in that the company manufacturing the product must have at disposal a suitable plant for galvanic treatment that involves installation and environment problems as it is well known by the persons skilled in this art.
  • Another drawback consists in that the introduction of the galvanic treatment within the product manufacturing cycle, involves an increase of the production times and an extension of the production time specially when the company outsources the galvanic treatment to specialized firms.
  • a further drawback of this technique consists in that by the galvanic process a thin layer of covering material is obtained that undergoes with time a wear process causing the underlying material to re-emerge with consequent deterioration of the ornamental features of the article.
  • each ring is obtained cutting a multicolor tubular element obtained by shaping and coupling through weldings along the lateral edges, two or more blades of materials with different colors.
  • a drawback of such technique consists in that the operation of welding the blade edges requires high precision for positioning the blades and controlling the welding by which the blades are joined.
  • Another drawback consists in that the welded zones undergo mechanical stresses during the subsequent working stages, for instance the sectioning operation for cutting the tubular element, with possible failure of the weldings.
  • a further drawback consists of the long production time of the article, mainly due to the operation of threading the rings on the core.
  • the object of the present invention is to remove the above mentioned drawbacks by a method to obtain multicolor products for making wearable ornamental articles through mechanical workings comprising localized material removal.
  • the manufacture of the unfinished product provides for cutting to size the coated wire to obtain a plurality of cut pieces which are closed in the form of a ring and linked together.
  • the manufacture of the unfinished product provides for rolling the coated wire to obtain a strap which is then spirally wound thus obtaining a tubular element which is subsequently shaped according to the form of a mold.
  • a flexible core also of precious material may be inserted.
  • the manufacture of the unfinished product provides for cutting to size the coated wire to obtain a single piece on which the material is removed.
  • the method of the invention does not require use of galvanic processes.
  • the ornamental article of the invention has greater features of mechanical strength and resistance to abrasion relative to the ornamental articles made by the methods of the prior art.
  • the multicolor product 1 is provided with a plurality of rings linked together and may be used for constructing wearable ornamental articles such as armlets and necklaces, after cutting to size and applying suitable closures at their ends.
  • the first step shown by block 2 of FIG. 1, provides for making a wire 3 consisting of a central element 4 coated by a sheath 5.
  • the sheath 5 is obtained by winding on the central element 4 a covering wire 5a with a helical development through a machine tool 2 of a kind known per se.
  • the central element 4 consists of a generally cylindrical wire, while the covering wire 5a consists of a strap.
  • the central element 4 is preferably made of precious metal material and the material of the sheath 5 is also a precious metal material with different color relative to the central element 4.
  • the single color wire 3 is obtained, whose color is defined by the color of the material of the outer sheath 5.
  • the subsequent step shown by the broken line block 6 of FIG. 1, consists in working the wire 3 to make the unfinished product 7 and provides for cutting to size the wire 3 to obtain a plurality of cut pieces 8 that are then closed as a ring and at the same time linked together to obtain said unfinished product 7.
  • the steps of cutting the wire 3, making the rings and linking them together are carried out by chain making machines of known type that are commonly used by goldsmiths.
  • the unfinished product 7 so obtained then undergoes a further working with diamond machine tools or equivalent devices such as brushing machines which, as shown in FIG. 2, provide for removing material at one or more zones of the surfaces of the unfinished product 7, said zones being generally indicated with 10, through a rotary tool 9 provided in the illustrated case, with a diamond tool 9a.
  • diamond machine tools or equivalent devices such as brushing machines which, as shown in FIG. 2, provide for removing material at one or more zones of the surfaces of the unfinished product 7, said zones being generally indicated with 10, through a rotary tool 9 provided in the illustrated case, with a diamond tool 9a.
  • the product 1 After removal of the material the product 1 takes the desired multicolor outlook, particularly highlighted in FIG. 3, that will perform all its ornamental features on the armlet, necklace or any finished article that will be made thereby.
  • the multicolor product 1 shown in FIG. 3 just described is advantageously obtained by using only coated wire 3.
  • the manufacture of the unfinished product may provide for using different coated wires or even non coated wires, combined together according to the manufacturers choice.
  • FIG. 8 A constructional variation of the method of the invention is described with reference to FIGs. 4 to 8 for manufacturing a multicolor product of the wound type generally indicated with 11 in FIG. 8.
  • wire 3 which is obtained through the same coating steps herein before described, is worked to obtain a strap 12 that in the described embodiment has a generally rectangular section.
  • the strap section may also be of any shape.
  • the strap 12 is then wound to define a tubular element generally indicated with 13 consisting of a plurality of mutually juxtaposed spirals 13a.
  • a flexible core 14 is inserted, shown in FIG. 5 and consisting for instance of a mesh of precious metal material or any continuous flexible element.
  • the flexible core 14 is inserted inside the tubular element 13 to give peculiar stiffness characteristics to the final article.
  • the step of inserting such a flexible core may also be omitted.
  • the tubular element 13 and the core 14 are then shaped by molding or other working process according to a profile that in the described embodiment and as shown in FIGs. 6 and 7 is of a rectangular shape.
  • Such a profile may however take different forms according to the customer taste and the market demand.
  • the unfinished product 15 so obtained is constituted by the core 14 that may also be dispensed with, perimetrally covered by an edge of composite material formed by the central element 4 externally coated with the sheath 5 that at the inside covers the core 14.
  • the material removing process is carried out for a depth sufficient to cause the material of different color of the central element 4 to re-emerge.
  • the material removal as in the previously described case is obtained through diamond machine tools with a rotary tool 16 provided with a diamond 16a, or through brushing machines allowing to obtain the desired product 11 shown in FIG. 8, in this case of two colors.
  • the two opposite surfaces 11a and 11b of the multicolor product 11 take different colors and the ornamental article obtained by said multicolor product 11 may be indifferently worn either with the surface 11a or the surface 11b facing to the outside.
  • FIGs. 9 and 10 another constructional variation of the method of the invention is shown, which is different from the previously described method of FIGs. 4 to 8, only for the different configuration of the wire used for making the unfinished product.
  • the wire consists of a central element 17 coated by a couple of coaxial sheaths 18, 19 having different colors from each other and relative to the central element 17.
  • the strap obtained from working the wire is spirally wound thus obtaining a tubular element inside which the flexible core 20 is possibly inserted, defining for the unfinished product 21 the cross section shown in FIG. 9.
  • the material removing step from the outer surface of the unfinished product 21 allows to obtain the product 22 with several zones of different colors corresponding to the colors of the materials constituting the central element 17 and sheaths 18 and 19.
  • FIG. 11 A further constructional variation of the method of the invention is shown in FIG. 11 where the unfinished product consists of a single piece 8 obtained by cutting to size the wire 3 as shown in FIG. 1.
  • the material removing process is then carried out for a depth sufficient to cause the material of different color of the central element 4 to re-emerge to obtain the product 23 with two colors.
  • Such variations may for instance consist of a different number of sheaths forming the wire, a different shape of the multicolor product, or even a different combination of removal depth and zones where the removal is effected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adornments (AREA)
  • Wire Processing (AREA)
  • Physical Vapour Deposition (AREA)
EP02027850A 2001-12-13 2002-12-12 Verfahren zur Herstellung von mehrfarbigen Schmuckstücken Withdrawn EP1319350A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001VI000260A ITVI20010260A1 (it) 2001-12-13 2001-12-13 Metodo per realizzare manufatti in materiale prezioso ed oggetti ornamentali multicolore da indossare realizzati tramite detti manufatti
ITVI20010260 2001-12-13

Publications (2)

Publication Number Publication Date
EP1319350A2 true EP1319350A2 (de) 2003-06-18
EP1319350A3 EP1319350A3 (de) 2004-05-26

Family

ID=11461724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02027850A Withdrawn EP1319350A3 (de) 2001-12-13 2002-12-12 Verfahren zur Herstellung von mehrfarbigen Schmuckstücken

Country Status (4)

Country Link
US (1) US20030110633A1 (de)
EP (1) EP1319350A3 (de)
IT (1) ITVI20010260A1 (de)
MX (1) MXPA02012306A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016030622A1 (fr) * 2014-08-29 2016-03-03 Cianflone Alessia Procédé de réalisation d'une pièce ornementale à anneaux entrelacés

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8769725B2 (en) * 2012-09-28 2014-07-08 Nicholas Doran Sports memorabillia article and method for making the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH612604A5 (de) * 1976-05-31 1979-08-15 Gori & Zucchi Spa
JPS6036354B2 (ja) * 1979-07-02 1985-08-20 三菱マテリアル株式会社 装飾部品用金属複合材の製造法
DE3221008A1 (de) * 1981-06-12 1983-01-05 Metalmeccanica Gori & Zucchi M.G.Z. S.p.A., Arezzo Verfahren zur erzeugung eines im wesentlichen drahtartigen halbzeugs fuer die herstellung von schmuckwaren sowie vorrichtung zur durchfuehrung des verfahrens
JPS61259849A (ja) * 1985-05-14 1986-11-18 Tanaka Kikinzoku Kogyo Kk 装飾用品の製造方法
IT8801234A0 (it) * 1988-09-05 1988-09-05 Mgz Spa Procedimento per la produzione di catene e di altri articoli ornamentali con filo tubolare pieno ed oggetti siffatti
US5425228A (en) * 1994-08-29 1995-06-20 Adipaz, Ltd. Multi-color faceted rope chain and fabrication method
US6381942B1 (en) * 1998-06-19 2002-05-07 Jewelmatic, Inc. Thin walled attached silver filled gold jewelry

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016030622A1 (fr) * 2014-08-29 2016-03-03 Cianflone Alessia Procédé de réalisation d'une pièce ornementale à anneaux entrelacés
FR3025073A1 (fr) * 2014-08-29 2016-03-04 Alessia Cianflone Procede de realisation d'une piece ornementale a anneaux entrelaces
US10285476B2 (en) 2014-08-29 2019-05-14 Alessia CIANFLONE Method for producing an ornamental piece having intertwined rings

Also Published As

Publication number Publication date
MXPA02012306A (es) 2004-12-13
ITVI20010260A1 (it) 2003-06-13
US20030110633A1 (en) 2003-06-19
EP1319350A3 (de) 2004-05-26

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