Note: Descriptions are shown in the official language in which they were submitted.
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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.
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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
.
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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
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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
