CA2149373A1 - Ornamental chain - Google Patents

Abstract

The chain for ornamental purposes, comprises a mesh made up of links (4) suitable for undergoing work of compression and beating and having sections of various width. These sections (1,2,3) are made with links of the same dimensions and diameter as the wire.

Description

214g373 FIELD OF THE lNV~Nl'lON

The preseDt in~ention relates to a chain for ornamental purposes according to the preamble of claim 1.

BACKGROUND OF THE l~v~ lON

As is already well known, one of the production methods for chains used in the gold jewelry field consists of the manufacture of specially shaped ~mall rings ~hich are ~ubsequently connected to form a chain, whicb ha~ partic~lar structures according to the reciprocal manner of connecting the small rings.
Subseq~ently, the chain thus obtained un~ergoes an operation that in itself is known as compressing and beating, and which create~ flat ~rips in which the original links, that are formed by joining the ~mall rings, are converted into supported an~ slightly staggered twilled bands.
A particular conformati~n of the flat strip obtained after compressing and beating is that of having sections of different width. ~s an example, an ornamental product ~aving thls characteristic consists o~ nec~laces and bracelets made up o~ a middle section that i~ wider than the two si~e ~sections used for fastening.
At the present state of the art, the manufacture of ornamental products having the abo~e mentioned characteristic is obtained by usin~ links and wire of different size and dia~eter.

2149373~
In the part of the chain which must be wider there a~e used l1nks having greater wire ~im~nsions and diameter than the dimensions and diameter of the wire in ~he links tha~ make up the remaining part of the ~ame c~ain which has smaller widt~. This way of operation has productive, economic and aesthetic disad~antages.
The disadvantage in production derives from the need to use, for the ~anufacture a chain with variable width, at least two different ~inds of links wieh the consequence of having to use at least t~o types of operating machines to carry out the connection; alternatively, manual operation would be required, with its obvious disadvantages.
The economic type of di~advan~age derives from the fact that in order to manufacture the part of greater width, larger links must be used ~ith larger diameter wire, whic~ determines a ~igher co~sumption of the preci~us metal.
A further disad~antage derives f~o~ ~he fact that in using different size lin~s the side-by-side barbed strips resulting after the operation o~ beating are not homogenous and, in the eYen~ a limited number of di~erent types o~ l1nks are used, the variation in chain width does not appear gradual and con~inuous, which gives rise ~o an unsatisfactory appearance.

SU~ARY OF T~E I~V~N 110~

The objec~ of the present invention is to manufac~ure an ornamental chain having suc~ characteristics that ~hey .

~1 49373 provide re~lts in the production and aesthetic appearance which are no~el and superior with respect to what was possible to ob~ain with similar chains of ~he known type, whic~ have sections of different width.
According to the inven~ion, these results are achieved by manufaceuring the ch~in~ with links of the same dlmension and with wire of the same diameter.
Advantageously, it is possible to provide that the portion of c~ain that connects the sections of different length have a profile that gradually joins these sections.

~RIEF DESCRIPTION OF THE DRAWIXGS

These and other characteristics of the invention will become more evident hereinbelow with reference to the enclosed drawings in which:: .
Fig. 1 repre~ents a schematic front view of a portion of chain with a section having decreasing width.
Fig. 2 represent~ a top view of the section of the c~ain o Fig. l;
Fig. 3 represents a sectional v~ew according to line II - II of Fig . 1, of the "f lat" type chain;
Fig. 4 represents a sectional view according to line II-II of Fig. 1 of the "crowned" type chain section;
Fig. 5 represents a ~c~ematic vlew of a portlon of chain with e~o ~ections of decreasing width.
Figure 1 shows that the chain consists of a wider first ~_ 2149373 sec~ion 1, together with a narrower section 2 through a section 3 having a profile that gradually joins them.
All the chain sections are made up by links 4 with a wire of t~e same dimen~ions and diameter. It is possible to ~ake up the chain in such a ~ay tha~ the c~ain has in the interior a section of constan~ widt~, there are two or more por~ions symmetrically opposed and mutually joined and ~oth having an increasing or decreasing profile.
As an example, figure 5 represen~s a chain in which in the interior there is a section of constant width 5,.and there are two portions 6 and 7 having an increasing/decreasing profile, joined and ~ymmetrically opposed.
It s~ould be noted that the invention concerns all kinds of chain suitable for compressing and beating, for examples; eyelet, double, triple, quadruple, quintuple, fox-tail etc.
To make to chain, any kind of material, precious or non-precious, can be used; the links can be hollow or solid.
~ The surface of ~he c~ain can be glazed, dlamond-studded, enhanced wit~ patterns and the like.
L~tly, t~e various chain sections can be made in different lengths, widths and inclination~ of their profile with respect to the axis, always within t~e scope of the invention

Claims (7)

1. A chain for ornamental purposes, made up of a mesh formed of links (4) suitable to undergo operations of compression and beating and having sections (1,2,3) of different width wherein said sections (1,2,3) are manufactured with links of the same dimensions and with wire of same diameter.

2. The chain according to claim 1, wherein that portion (3) of the chain which connects the two above mentioned sections (1,2) of different width has a profile that continuously joins said sections (1) and (2).

3. The chain, according to claim 1 or 2, which has in the interior one section of constant width two portions symmetrically opposed and mutually joined and both having an increasing or decreasing profile.

4. The chain, according to claim 1 or 2, which has two portions symmetrically opposed, with increasing or decreasing profile, between which is interposed a section of constant width.

5. The chain, according to anyone of claims 1 through 4 which has a plurality ofprofiles of increasing or decreasing profile.

6. The chain, according to at least one of claims 1 through 5 which has a "flat" type transversal section.

7. The chain, according to at least one of claims 1 through 6 which has a transversal section of the "crowned" type.