Chain – staple – and horseshoe making – Chains – Ornamental
Patent
1994-07-07
1996-04-02
Jones, David
Chain, staple, and horseshoe making
Chains
Ornamental
59901, F16G 1308
Patent
active
055029620
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention concerns jointed units suitable for forming, in the field of jewelry making, bracelets, bands, ear rings, etc, and, in the field of mechanics in the broad sense, members such as transmission chains, belts and similar devices.
2. Description of the Related Art
In the course of the present, a detailed explanation will be provided of a unit particularly suited to use in jewelry making, but its manner of use in a different field will be able to be deduced in an obvious and immediate way by a technician skilled in each branch of application. To the applicant it does not seem that in prior art there are known units having characteristics analogous to those of the unit of the present invention.
The same applicant has also filed Swiss patent application no. 3177/91-2 which described a jointed unit which, among other things, exhibited the advantage of not requiring soldering or other types of complex machining that also would be potentially harmful to the final technical and aesthetic result, but the invention according to the application, besides conferring on the final product the same advantages as the above mentioned unit, has in relation to it the further technical advantage of offering equal resistance to mechanical stresses and to wear by using component parts of lesser weight, which, in the field of jewelry making, as well as in the dynamic uses of the unit, represents a significant technical advance.
The object of the invention is a jointed unit composed of several adjacent elements connected to one another by a pair of members called links, located at the opposite ends of the elements themselves, to which they are connected in such a way that they can rotate, while the members of said links that are components of the pair are made integral to one another by a fastening means connected to them in a reversible manner.
BRIEF DESCRIPTION OF THE DRAWINGS
The detailed description of the invention will be made according to two preferred embodiments, with reference being made to the attached drawings in which:
FIG. 1 represents an exploded view of the unit according to a preferred embodiment of the invention limited to two adjacent elements connected to one another;
FIG. 2 represents an exploded view of the unit according to another preferred embodiment; and
FIG. 3 represents a plan view of the unit with the component parts assembled in both embodiments.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In one preferred embodiment (see FIG. 1), the two adjacent elements 2, 3 of a jointed unit 1 exhibit on each end two protruding small studs.
Small studs 2d, 3d and 2c, 3c of the ends of the two elements 2, 3 engage into the same number of cylindrical holes 6c, 6d and 5c, 5d preferably blind, made on two connecting members or links 5, 6 which form a pair, and situated on opposite sides in relation to elements 2, 3.
The connection among the small studs and the corresponding holes must be such so as to allow the relative rotation of the parts among themselves without excessive play.
The two links 5, 6 are then integral with one another by means of a fastening member, which in the present embodiment is made up of a bar 4 connected to each one of them at its opposite ends 4a and 4b by fastening screws 7 passed through bores 8 into recessed threaded blind holes 9.
Bar 4 is situated in an intermediate position between the two adjacent elements 2, 3 in such a way that it is possible, by changing the shape of the elements themselves, to cover it in whole or in part, or to leave it completely visible.
By making an appropriate choice of the material with which bars 4 are made, it is therefore possible to obtain the desired chromatic play and the relief effect sought for each particular embodiment. (For this purpose see FIG. 3 in which bar 4 is completely hidden by the adjacent elements 2, 3).
A second embodiment (see FIG. 2) of the jointed unit 1 provides for making small studs 6a, 6b and 5a, 5b integral with and protruding from the links 6, 5. The sm
REFERENCES:
patent: 1893256 (1933-01-01), Wachenheimer
patent: 4930304 (1990-06-01), Meister
Jones David
Valcambi S.A.
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