EP0738118B1 - Chain and a method for making the chain - Google Patents

Chain and a method for making the chain Download PDF

Info

Publication number
EP0738118B1
EP0738118B1 EP94931609A EP94931609A EP0738118B1 EP 0738118 B1 EP0738118 B1 EP 0738118B1 EP 94931609 A EP94931609 A EP 94931609A EP 94931609 A EP94931609 A EP 94931609A EP 0738118 B1 EP0738118 B1 EP 0738118B1
Authority
EP
European Patent Office
Prior art keywords
chain
loops
ring
rings
bent
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
EP94931609A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0738118A1 (en
Inventor
Matti Kangasvuori
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0738118A1 publication Critical patent/EP0738118A1/en
Application granted granted Critical
Publication of EP0738118B1 publication Critical patent/EP0738118B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the present invention concerns a procedure as defined in the preamble to Claim 1 for making a chain, and a chain as defined in the preamble to Claim 8.
  • the chain constituting the object of the invention is primarily intended to be used as suspension chain in needs of the jewelry industry, e.g. as a necklace chain or bracelet chain. In such uses the structure (appearance) of the chain is the main and determining factor.
  • the spiral chain is made of one or several continuous filaments.
  • the objectionable feature of the spiral chain is its poor bendability, due to the way of making it of one single filament.
  • the durability of the spiral chain is also fairly poor because in such a chain comparatively sharp kinks are made in the chain, which invariably detract from its strength.
  • repairing a spiral chain is an awkward job, because a junction has to be made in the normally continuous filament in order to repair the chain.
  • An Etruscan chain is made of separate, oval shaped loops, which are disposed within each other, "loop-in-loop".
  • the drawback of the Etruscan chain is its rigidity (poor flexibility), which is due to the manufacturing process, making the chain of loops going one into the other. Owing to the manufacturing mode, the chain will also be comparatively heavy. Repairing an Etruscan chain is also cumbersome work, owing to the compact structure of the chain.
  • the object of the invention is to eliminate the drawbacks mentioned. Specifically, the object of the invention is to disclose a resilient, strong, light construction, easy to repair, also industrially easy to produce, and visually attractive chain, and the manufacturing procedure thereof.
  • separate closed rings are made of filamentary material.
  • the rings are bent to have at least three loops advantageously with regular spacing, that is, the circumference of the ring is pressed inward so that outward extending loops are formed between the points where pressure is applied.
  • the loops are thereafter slipped through the loops of the preceding ring on the chain which is being manufactured, and the loops of the ring are bent upward, or in the direction in which the chain is growing, to receive the corresponding loops of the next ring.
  • the separate closed rings are produced by winding the filamentary material to a helix, cutting up the helix into separate pieces and joining the ends of each piece to form a closed ring.
  • the loops on the ring are initially bent towards the loops of the preceding ring, i.e., towards the end of the chain in the process of forming, which makes it easier to pass the loops of the ring through those of that preceding ring on the end of the chain.
  • the downward bent loops are then turned up in the opposite direction, to receive the downward pointing loops of the ring next in order to be mounted.
  • the loops which are made on the ring are bent in such manner that the ring containing these loops will present a roundedly and smoothly undulating or meandering stellate configuration with no sharp angles or abrupt bends.
  • the chain which is formed will be uniform in quality, and strong.
  • the chain which is finished as to its length is calibrated by drawing it through a calibration ring, whereby the chain acquires the final, uniform cross sectional dimension.
  • the chain of the invention comprises a plurality of closed rings connected with each other and which in aggregate constitute an elongated chain.
  • the rings are separately closed and connected to each other by bending them so that each ring comprises at least three loops which are passed through the corresponding loops of the preceding ring on the chain and have been bent forward in the assembly direction of the chain, to receive the corresponding loops of the next ring.
  • the rings used in the invention are metal rings and specifically in needs occurring in jewelry industry, noble metal rings.
  • the chain of the invention can equally be made of steel rings, and appropriate dimensioning provided it may then be used e.g. as protective and transport packaging for elongated objects because the chain defines in itself a hollow space and the shell thereof is comparatively thick and resilient. In this way an appropriately dimensioned chain will furnish efficient protection to the elongated object within it against external impacts.
  • the ring may equally have several loops and their location relative to each other may be suitably variable, whereby it is possible to produce chains, and pieces of jewelry, of different cross sections and different appearance so that the shape of the chain varies from flat to completely round.
  • the chain may be made variable of its cross section as well.
  • the advantage of the invention over prior art is that in this way a very thin and flexible chain can be produced without sacrificing any of its durability, owing to the fact that in no phase are any sharp angles made in the filament which is used or in the individual rings.
  • the production of the chain of the invention is easy to mechanize, and in mechanical production this chain will be economically well competitive owing to its strength/weight ratio.
  • the chain of the invention is made as follows. First, a number of rings 1 as depicted in Fig. 1, or round, solid rings, are made. The ring 1 is pressed with suitable members 5 in the direction towards the centre of the ring so that loops 2 are formed of the ring periphery, between the points where pressure is applied, in the present embodiment four loops. The loops, as well as the intervening ring regions, are smoothly curved and round-shaped.
  • the loops 2 of the ring being mounted on the end of the chain are bent in the direction towards the end of the chain, that is downward in Fig. 3, and the loops 2 can then be slipped through the corresponding loops 4 of the preceding ring 3 on the end of the chain.
  • the loops 4 are pointing upward, that is towards the new ring 1 which is being mounted.
  • the loops 2 are turned upward, whereby they are now ready to receive the downward bent loops of the ring to be mounted next.

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  • Adornments (AREA)
EP94931609A 1993-11-04 1994-11-04 Chain and a method for making the chain Expired - Lifetime EP0738118B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI934887 1993-11-04
FI934887A FI93513C (fi) 1993-11-04 1993-11-04 Ketju sekä menetelmä ketjun tekemiseksi
PCT/FI1994/000495 WO1995012329A1 (en) 1993-11-04 1994-11-04 Chain and a method for making the chain

Publications (2)

Publication Number Publication Date
EP0738118A1 EP0738118A1 (en) 1996-10-23
EP0738118B1 true EP0738118B1 (en) 2000-02-09

Family

ID=8538904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94931609A Expired - Lifetime EP0738118B1 (en) 1993-11-04 1994-11-04 Chain and a method for making the chain

Country Status (4)

Country Link
EP (1) EP0738118B1 (fi)
DE (1) DE69423003T2 (fi)
FI (1) FI93513C (fi)
WO (1) WO1995012329A1 (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR040778A1 (es) 2002-08-06 2005-04-20 Glaxo Group Ltd Anticuerpos alterados o fragmentos funcionales que se unen a mag (glicoproteina asociada a mielina).

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1566385A (fi) * 1968-02-19 1969-05-09
FR2213031B1 (fi) * 1973-01-04 1976-08-27 Lenfant Jacques
IT1204032B (it) * 1986-02-28 1989-03-01 C M S Srl Procedimento per la produzione automatica di catene a maglie ornamentali e relativa apparecchiatura

Also Published As

Publication number Publication date
FI93513B (fi) 1995-01-13
FI93513C (fi) 1995-04-25
DE69423003T2 (de) 2000-09-14
DE69423003D1 (de) 2000-03-16
FI934887A0 (fi) 1993-11-04
EP0738118A1 (en) 1996-10-23
WO1995012329A1 (en) 1995-05-11

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