EP0015242B1 - Pièce de bijouterie protégée par un blindage en métal dur - Google Patents

Pièce de bijouterie protégée par un blindage en métal dur Download PDF

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Publication number
EP0015242B1
EP0015242B1 EP80810061A EP80810061A EP0015242B1 EP 0015242 B1 EP0015242 B1 EP 0015242B1 EP 80810061 A EP80810061 A EP 80810061A EP 80810061 A EP80810061 A EP 80810061A EP 0015242 B1 EP0015242 B1 EP 0015242B1
Authority
EP
European Patent Office
Prior art keywords
piece
body member
hard metal
bezel
protecting
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.)
Expired - Lifetime
Application number
EP80810061A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0015242A1 (fr
Inventor
Paul Gogniat
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.)
Rado Uhren AG
Original Assignee
Rado Uhren AG
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
Priority claimed from CH171779A external-priority patent/CH632886GA3/fr
Priority claimed from CH1115779A external-priority patent/CH632634GA3/fr
Application filed by Rado Uhren AG filed Critical Rado Uhren AG
Priority to AT80810061T priority Critical patent/ATE67613T1/de
Publication of EP0015242A1 publication Critical patent/EP0015242A1/fr
Application granted granted Critical
Publication of EP0015242B1 publication Critical patent/EP0015242B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/0008—Cases for pocket watches and wrist watches
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases

Definitions

  • US-A-3,242,664 describes a piece of jewelry protected by a hard metal shield, each part of the external surface of which, when worn, is particularly exposed to contact with foreign bodies, is constituted by a protective part. thin, made of sintered hard metal, which covers a corresponding part of a body of machinable material and which is fixed to this body. In the case of this previous proposal, the fixing of the protective parts was provided by welding.
  • the means used to attach such a shield to the body to be protected are however not applicable to a sintered hard metal shield.
  • the piece of jewelry is a wristwatch box
  • the part most exposed to insults is the area surrounding the glass
  • the invention aims to provide a piece of jewelry and in particular timepieces of the type defined at the beginning of this specification and which is devoid of all the drawbacks attached to the previous solutions.
  • the object of the invention is to fix the hard metal part other than by direct welding to the body of the piece of jewelry, which therefore avoids all the difficulties caused by the differences in thermal behavior of the materials from which the component elements are made. the piece of jewelry.
  • the invention provides for replacing the means of fixing of the prior art materialized by a direct welding of the protective element on the body of the piece of jewelry, by fixing means which can be described as "mechanical" which surprisingly makes it possible to solve the problems posed in this kind of assembly which, since the proposal made in patent US-A-3,242,664 focused on direct welding, had not found a satisfactory solution.
  • the welding technique recommended in this prior document has not found practical application, as is known the Applicant all the better since she is herself the holder of this patent.
  • the invention therefore relates to a piece of jewelry protected by a hard metal shield, each part of the external surface of which, when worn, is particularly exposed to contact with foreign bodies , is constituted by a thin protective part, made of sintered hard metal, which covers a corresponding part of a body of machinable material and which is fixed to this body, characterized in that the fixing of the protective part is carried out so punctual, by at least one stud welded against the face of the protective part intended to be turned towards said body, this stud being retained in a hole in the body of machinable material at a point of said exposed part covered by the protective piece.
  • the invention also relates to a piece of jewelry protected by a hard metal shield, each part of the external surface of which, when worn, is particularly exposed to contact with foreign bodies, consists of a thin protective part, made of sintered hard metal, which covers a corresponding part of a body of machinable material and which is fixed to this body, characterized in that the fixing of the protective part is carried out punctually , by at least one fixing stud in the form of a stud composed of a rod which passes through a bore in the protective part and is retained in a bore of said body and of a decorative head, integral with this rod, which holds the protective part pressed against the body of machinable material.
  • the shape which it is desired to give to the piece of jewelry is obtained following traditional operations, carried out on the workable material of the body of the piece of jewelry.
  • the hard metal protective parts which have an approximately constant thickness and which are then fixed to this body, no longer modify their shape; they just increase the volume somewhat.
  • the body of machinable material and the hard metal shield can be made entirely for each other and fixed to each other at the last moment, just before delivery. As the fixing studs of the protective part cover only a very small part of the face of the latter, it is not difficult to find a suitable location for them.
  • the head of the studs, judiciously polished can create the illusion of a precious stone set on the protective piece of hard metal.
  • each of the studs can be retained permanently in a hole passing through the body by a rivet at its end.
  • the hard metal part used in the invention is generally thin, it is not the same for the body which is intended to receive it (watch case for example). This would be another reason for those skilled in the art to discard the rivets in the kind of assemblies discussed above.
  • the invention proposes to use the rivet which has been found to give complete satisfaction.
  • the removability of the protective part is essential.
  • the fixing of the studs to the body of machinable material can be advantageously carried out by retaining them in the corresponding hole of the body of machinable material by a screwed fixing member engaged in this body transversely to the hole so as to open therein to clamp the stud in place.
  • Such a blockage is as simple as it is effective.
  • the fixing members thus defined have, in fact, the advantage of being entirely camouflaged while nevertheless being easily accessible.
  • the invention makes it possible precisely to associate with a hard metal part such ornamental elements, the piece of hard metal then being arranged to receive the ornamental element.
  • the pieces of jewelry which it is advisable to protect by means of a sintered hard metal shield are mainly watch cases, more particularly wristwatches, metal bracelets, cuff links, brooches, pendants.
  • the piece of jewelry is a metal bracelet with elements articulated to each other
  • fixing studs formed by the ends bent at right angles to a thin elongated piece, the part of this piece extending between the ends being deformable in the longitudinal direction and being welded against a part of the protective part.
  • the first embodiment of the piece of jewelry according to the invention (Fig. 1 and 2) consists of a wristwatch case.
  • This box includes a case back 1 and a bezel case 2, both made of steel.
  • the movement 3 of the watch is fitted from the top into a housing 4 of circular shape of the case back 1. It is held in place in this housing by a projection 5 of the case back 1, on which the thread 6 of the plate of the movement 3.
  • the dial 7 extends beyond the movement 3. It extends into a second housing 8, also of circular shape, of the case-back 1.
  • the case-bezel 2 is fitted around a cylindrical seat 9 of the case-back -carrure 1. It carries the horns 10 for fixing the bracelet. She rests on a flange 11 of the backband 1 and is held in place by four screws 12.
  • the case described is closed in a leaktight manner by a flat sapphire crystal 13.
  • the edges 14 of the glass are bevelled.
  • the glass 13, rectangular, is held in place in a slide 15 formed in projections 16 of the middle part-bezel 2, located above the horns 10 and extending between them.
  • the other two sides of the box are covered by the glass 13, which, at these locations, extends to the edge of the box.
  • the tightness of the closure of the case is ensured by an annular lining 17 that the glass 13 compresses at the bottom of a groove formed by the internal cylindrical wall 18 of the middle part-bezel 2, the upper face 19 of the base part 1 and a flange 20.
  • the compressed gasket 17 also has the effect of preventing an inadvertent sliding of the glass 13 in the slide 15. For this reason, the glass 13 must be put in place in the slide 15 before tightening the screws 12, when closing the box.
  • this protection is provided by a shield of sintered hard metal, consisting of two plates 22, resting on the faces 21. As the latter are flat, the plates 22 are flat. Their outline is trapezoidal and the two long sides are bevelled. Given the very simple shape of the plates 22, their manufacture does not encounter any difficulty. Their constant thickness is chosen so that these plates 22 are able to withstand alone the pressures or shocks of foreign bodies which they may accidentally undergo during use.
  • the hard metal protective parts constituted by the plates 22, two studs 23 are welded against the underside of the plates 22, not affected by the termination operations, since it is hidden.
  • the welding of the pads 23 is carried out after the sintering of the pads 22, but before subjecting the latter to the termination operations.
  • the studs 23 are made of steel and they can be formed by bar turning. Although the contact surface between these pads and the pads 22 is reduced, the soldering provides ample fixing of the pads 23.
  • the visible faces of the plates 22 are polished as in the case of known parts. They can also be coated with a colored layer. In the case of platelets in tungsten carbide, this coloring can, for example, be carried out by forming a layer of nitride on the surface of the wafers.
  • the middle-bezel 2 has recesses 24 and holes 25, drilled in the face 21 and opening into these recesses.
  • a recess 26, of larger diameter, is formed at the entrance of the holes 25 to receive the enlarged head 27 of the studs 23.
  • the depth of the recess 26 can be chosen very slightly less than the height of the head 27. In this way, it is the head 27 which will be pressed against the bottom of the recess 26 and not the plate 22 against the face 21, when the studs 23 are fully engaged in the holes 25.
  • the drawing shows that the shape of the box is determined by the two parts 1, 2.
  • the plates 22 simply have the effect of raising the parts of the box taking the place of glasses.
  • parts 1 and 2 are made of steel, their machining presents no difficulty.
  • these two parts 1, 2 could also be made of any other machinable material, brass, aluminum and even synthetic material.
  • a metallization layer 28 is deposited on the periphery of the glass 13, on its underside.
  • the second embodiment differs from the first only by the presence of stones 29, precious or semi-precious, housed in openings 30 of the plates 31 of hard metal.
  • the walls of the openings 30 are slightly inclined so that the stones 29 are held in place by pinching between the edge of the openings 30 and the face 21 of the projection 16.
  • the piece of jewelry according to the third embodiment also consists of a wristwatch box.
  • This includes a bezel which completely surrounds the glass 32.
  • the hard metal protective part is constituted by a thin frame 33, which completely covers the bezel of the box.
  • the fixing of this frame to the body of the box, made of easily machinable material, is ensured by four studs 34, welded against its underside.
  • the fourth embodiment differs essentially from the third only by the fact that the shielding is not constituted by a hard metal protection piece in one piece, but by a set of square plates 35, juxtaposed and fixed to the body of the box, made of easily machinable material, each by a pad 36.
  • the pads 36 are cylindrical, like those of the previous embodiments, the pads 35 are not likely to rotate around their pad 36. Their juxtaposition keeps them in place.
  • the fifth embodiment also consists of a wristwatch case.
  • This includes a steel back 37, which came from manufacturing with horns 38 for fixing a bracelet and a thin veil 39 joining the horns 38 located on the same side to each other. of the box.
  • the backband 37 has various housings 40, 41, 42, 43, respectively for the movement 44 of the watch, for a thread 45 of the movement ensuring its axial position in the case, for the dial 46 and a flange 47, and for a seal 48 of circular profile, surrounding the flange and thus being trapped in a peripheral groove of the box.
  • the movement 44 and the dial 46 are enclosed in their respective housings by a bezel 49 made of hard metal, carrying a flat glass 50, made of tempered mineral or sapphire.
  • the bezel 49 is also flat and barely a little thicker than the glass 50, so that a housing 51, acting as a notch of ice, can be arranged there.
  • the glass 50 can be embedded inside the bezel 49, so that its upper edge is protected from scratches.
  • a sleeve 52 made of a softer material than the glass and the bezel, is interposed between these two parts. This sleeve forms a cushion compensating for the manufacturing tolerances of the glass and of the housing 51 as well as the difference between the coefficients of thermal expansion of these two parts; it also seals the joint between them.
  • the bezel 49 is pressed against the flat upper face 53 of the case back 37, compressing the lining 48 in the groove formed by the housing 43 and the flange 47. It is retained in this position by the heads 54 of four studs each having a rod 55 engaged in a bore 56 of the backband 37 and passing through holes 57 of the bezel 49. Locking screws 58, located between the horns 38, under the sails 39, retain the studs 54, 55 axially in place, removably.
  • planar telescope 49 has an at least approximately constant thickness, its manufacture is relatively simple, whatever contour this telescope has. The risk of malformations due to shrinkage during sintering is also reduced. Since this bezel simply increases the thickness of the box and does not significantly modify the plastic, the latter is essentially determined by the case back 37, which constitutes the body of the box and which can be machined so usual.
  • the sixth embodiment differs from the fifth only in the shape of the upper face of the box.
  • the case back 37a has an inclined upper face 53a.
  • the bezel 49a has on its side an inner section 59 with flat faces, carrying the glass 50 embedded in the notch of ice 51 and an outer section 60 with inclined faces.
  • the holes 57a, passing through this outer part 60 of the bezel 49a, are perpendicular to its faces, just as the holes 56a in the body 37a are perpendicular to its upper face 53a, so that the rods 55 of the studs are engaged obliquely in the box.
  • the locking screws 58 of the studs remain perpendicular to their rods 55.
  • the telescope has an approximately constant thickness and, in the closed position, it is pressed against the body 37a with which it completely covers the upper face, leaving only the webs 39a joining the horns 38a, on each side of the box.
  • the role of this telescope 49a is therefore exactly the same as that of the bezel 49 of the fifth embodiment.
  • the piece of jewelry according to the seventh embodiment (Fig. 9) consists of a metal bracelet, composed of a series of elements hinged to each other.
  • Fig. 9 is a cross section of one of these elements.
  • This includes a body 61 made of stainless steel, but which could also be made of any other machinable material.
  • Hinges 62 to ensure the articulation of the element shown with the neighboring elements of the bracelet, are integral with the body 61. They could also have come from manufacturing in one piece with it.
  • the last embodiment shown in the drawing differs essentially from the previous one only by the means ensuring the attachment of the protective plates 64 to the bodies 66 of the elements of the bracelet.
  • the two studs 67 for fixing a wafer 64 have come from manufacture with an elongated rectangular piece 68, of steel, welded against the underside of the wafer 64.
  • Transverse slots 69 extending alternately from one and on the other side of the part 68, make this part easily deformable in the longitudinal direction, so that it will not cause dangerous internal stresses in the wafer 64, during cooling after welding.
  • the fixing pads 67 are formed at the ends of the part 68, which, for this purpose, are folded at right angles.
  • the protective parts could also be curved, the main thing being their thickness, at least approximately constant and relatively small, which gives them a form which can be described as two-dimensional, as opposed to the three-dimensional forms of practice so far.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adornments (AREA)
EP80810061A 1979-02-21 1980-02-18 Pièce de bijouterie protégée par un blindage en métal dur Expired - Lifetime EP0015242B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80810061T ATE67613T1 (de) 1979-02-21 1980-02-18 Mit einer verkleidung aus hartem metall geschuetztes schmuckstueck.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH1717/79 1979-02-21
CH171779A CH632886GA3 (en) 1979-02-21 1979-02-21 Piece of jewellery protected by a shielding of hard metal
CH11157/79 1979-12-17
CH1115779A CH632634GA3 (en) 1979-12-17 1979-12-17 Waterproof wristwatch case protected by a hard metal screen

Publications (2)

Publication Number Publication Date
EP0015242A1 EP0015242A1 (fr) 1980-09-03
EP0015242B1 true EP0015242B1 (fr) 1991-09-18

Family

ID=25688472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80810061A Expired - Lifetime EP0015242B1 (fr) 1979-02-21 1980-02-18 Pièce de bijouterie protégée par un blindage en métal dur

Country Status (7)

Country Link
US (1) US4740935A (ko)
EP (1) EP0015242B1 (ko)
KR (1) KR840000901B1 (ko)
BR (1) BR8001076A (ko)
DE (1) DE3072194D1 (ko)
HK (1) HK142694A (ko)
MX (1) MX150794A (ko)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003756A1 (en) * 1981-04-25 1982-11-11 Raval Jean Metal bracelet
CH643425B (fr) * 1981-06-01 Rado Montres Sa Boite de montre.
CH646028GA3 (ko) * 1981-08-10 1984-11-15
CH650895GA3 (en) * 1983-02-02 1985-08-30 Waterproof watch case
CH649675GA3 (en) * 1983-03-28 1985-06-14 Georges Ruedin Sa Wristwatch case
FR2616237B1 (fr) * 1987-06-04 1989-06-30 Lascor Spa Montre revetue d'une mosaique
CH672225B5 (ko) * 1987-12-23 1990-05-15 Ebauchesfabrik Eta Ag
FR2695544B1 (fr) * 1992-09-11 1994-11-04 Rado Montres Sa Bracelet de montre.
DE29714637U1 (de) * 1997-06-16 1998-02-26 Timehouse Handelsgesellschaft mbH, 20259 Hamburg Uhren
US6553667B1 (en) 1997-09-08 2003-04-29 Trent West Apparatus and method for manufacturing composite articles including wear resistant jewelry and medical and industrial devices and components thereof
TW468098B (en) * 1999-11-17 2001-12-11 Rado Montres Sa Device for assembling a cover made of hard material on the middle part of a watch
JP2004085434A (ja) * 2002-08-28 2004-03-18 Seiko Instruments Inc 時計
ITRM20060130U1 (it) * 2006-07-07 2008-01-08 Promopharma Srl Orologio da polso provvisto di cassa idonea ad alloggiare nella parte inferiore pietre che vengono a contatto con la pelle
JP2008032418A (ja) * 2006-07-26 2008-02-14 Seiko Instruments Inc 時計
JP5003373B2 (ja) * 2007-09-14 2012-08-15 セイコーエプソン株式会社 時計
US20120134244A1 (en) * 2010-06-21 2012-05-31 Crown International Properties Establishment System and Method for Easy Change Jewelry Case Cover
CH708815B1 (fr) * 2013-11-06 2017-12-29 The Swatch Group Man Services Ag Elément d'habillage pour une carrure d'une montre-bracelet.
WO2015174816A1 (es) * 2014-05-12 2015-11-19 Garza Leal Jesus Carcasa protectora de lector de energia electrica con lente de cristal
EP3771948A1 (fr) * 2019-07-31 2021-02-03 Omega SA Cadran pour piece d`horlogerie

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US732245A (en) * 1901-02-01 1903-06-30 Max L Weiss Ring.
US1735384A (en) * 1927-03-02 1929-11-12 Joseph P Whitaker Bracelet chain
US2029769A (en) * 1934-12-04 1936-02-04 Goldblatt Joseph Mounting for the crystal of a wrist watch casing
CH181293A (fr) * 1935-04-20 1935-12-15 Freres Werthmueller Lunette de glace pour boîtes de montres, de compteurs, etc.
CH236616A (fr) * 1943-07-15 1945-02-28 Colomb Henri Boîte de montre-bracelet.
US2659105A (en) * 1949-07-20 1953-11-17 Halbig Paul Process for tempering curved glasses of organic materials
CH332892A (de) * 1956-04-19 1958-09-30 Rayville S A Uhrgehäuse
US3242664A (en) * 1961-11-08 1966-03-29 Schlup & Cie S A Watch case
CH439124A (fr) * 1964-05-01 1967-02-15 Ulrich Klingenberg Hans Dispositif de fixation à cran d'un premier élément, massif et indéformable, d'une boîte de montre à un autre élément de ladite boîte
US3643423A (en) * 1969-09-30 1972-02-22 Piquerez Sa Ervin Protective screen for a timepiece casing
CH1282371A4 (ko) * 1971-09-01 1974-06-28
JPS5330352B2 (ko) * 1971-12-14 1978-08-26
FR2264501A1 (en) * 1974-03-22 1975-10-17 Pfertzel Exploit Lucien Multiple section ring, bracelet etc - has decorative male section fitting into female section
US4034552A (en) * 1976-04-05 1977-07-12 Charles Davidson Wrist watch
CH617563B (fr) * 1978-06-02 Rado Montres Sa Boite de montre etanche a verre polygonal.
CH646028GA3 (ko) * 1981-08-10 1984-11-15

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Technologie générale et de construction, Duroux et Faucard, Ed. Andre Desvigne (1969) p.184-194 *

Also Published As

Publication number Publication date
DE3072194D1 (de) 1991-10-24
EP0015242A1 (fr) 1980-09-03
BR8001076A (pt) 1980-10-29
US4740935A (en) 1988-04-26
KR840000901B1 (ko) 1984-06-26
MX150794A (es) 1984-07-19
HK142694A (en) 1994-12-23

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