Abstract: A link is made by bending a metal plate, and comprises a plurality of annular portions (13, 14, 15) and connecting portions (12) between the annular portions. An annular connecting link (3) has a gap through which the connecting portion passes and engaged with the connecting portion. A connecting member (4) having a base (41), a connecting arm (43), and an end portion is provided to be inserted between the link and the connecting link so as to connect the connecting link to the link with the connecting arm. A stopping means (17,42) is provided for holding and stopping the connecting member within the link. An opening is provided for disclosing an outer surface of the end portion of the connecting member from one of the annular portions at an end thereof, so as to allow a tool (5) to push the connecting member.

Abstract: A double helix jewelry chain is constructed from a series of interconnected chain links. Each link is formed with an open mouth defined between a pair of end faces. The end faces are aligned with one another in various predetermined geometrical and dimensional relationships in order to maintain a minimum projected gap or clearance opening equal to or less than the major dimension of an elongated cross section of each link.

Abstract: A jewelry rope chain having a double helix appearance formed from a plurality of interlaced links or rings of wire is disclosed. Each link is made from a wire loop having a gap, wherein the wire loop has a cross-section with a major axis defining a long diametrical dimension and a minor axis defining a short diametrical dimension. The long diametrical dimension is disposed in a plane defined by a diameter of the link and the short diametrical dimension is perpendicular to the long diametrical dimension. A ratio of the long diametrical dimension to the short diametrical dimension is less than 1.3:1. The gap of the wire loop is narrower than the long diametrical dimension of the loop cross-section.

Abstract: A bracelet with decorative elements and support elements includes a front sections of the decorative elements with in one a semi-cylindrical hollow and in another a projection of corresponding dimensions to permit two juxtaposed decorative elements to be maintained in position whilst permitting their articulation; the support elements have a shape inscribed within the recess of the decorative elements, an end of this support element has a coupling member formed by a convex semi-cylindrical surface provided with a coaxial hole, the other end of this support element includes two laterally separated coupling members each formed by a convex semi-cylindrical surface and provided with coaxial holes; and pins passing through the holes of two adjacent support members effect their coupling and permit their articulation.

Abstract: In a personal adornment band comprising a plurality of links (2) each having a pair of legs (4a, 4b), a recess (5) formed between the legs, and a projection (6) formed on the other side of the recess, the projection of each link being inserted in the recess of the adjacent link, and a connecting pin (3) being inserted into holes formed in the connecting legs and the projection of the links for connecting the links, each of the links (2) has a pin locking cylinder (7) fixed in one of the holes thereof, the connecting pin (3) has a manipulating portion (14a) slidable in the axial direction thereof, a radially projecting engaging lug (17) formed on the manipulating portion, and a spring for outwardly urging the manipulating portion, the pin locking cylinder (7) having a guide surface (21) formed at the connecting pin inserting end, a guide groove (22) axially extending from the guide surface, an engaging hole (23) formed at the inner end of the guide groove in the circumferential direction, and a stopper lug (24

Abstract: The links of the watch-band have a middle bar, two outer extensions adjoining on the one side thereof and two inner extensions on the opposite side. The extensions are provided with bores. To join together two links, a rod is led through the bores of the outer extensions of a first link and the bores of the inner extensions of a second link. Located between the inner extensions and the inner and outer extensions are rubber rings, which hold the rod. Thus, the bores in the extensions do not have to be made precisely, which leads to a significant reduction in the manufacturing costs of the metal watch-band.

Abstract: A jewelry item includes a plurality of components mounted in an end-to-end relationship on and along an annular, elastic support. Each component has two, generally planar end walls and an aperture for receiving the support and extending between the end walls. The end walls of adjacent components engage each other in surface area contact. The support can be a strap or a pair of wires. At least one of the components has a setting for a gemstone.

Abstract: A silver filled gold jewelry wire item includes an inner precious metal core, such as silver, and an outer gold layer. The outer gold layer has a predetermined thickness of from about 0.0001 inch to about 0.002 inch, preferably no more than 0.001 inch thick, which is much thinner than durable hollow wires of at least 0.004 inch in thickness or greater. A forming process draws a gold sheet strip into an open channel shaped member into which a solid silver core is placed at ambient temperatures. The open channel shaped member is closed by further rollers at ambient temperatures and welding of a seam when closed about the solid core. The resultant solid tubular gold jewelry wire item resists damage from diamond cutting knives, and can be used to create jewelry rope chains, earrings and bangles.

Abstract: The watchband includes, for example, three rows of metallic links. The links of the first central row (1, 1', etc.) are shifted with respect to the links of the two other rows (2, 2', etc.). Each link of the central row (1') can pivot with respect to the preceding link (1) and with respect to the following link (1") about pins (3) connected to the links of lateral rows. Stop elements, for example other pins (4, 4') likewise connected to the links of lateral rows, allow limitation of the pivot angle of the central links about the first pins (3). The links can be removed to adjust the length of the band. Advantages: ergonomics, avoidance of the risk of pinching skin or hair, aesthetics, reduction of the wear and tear of the surface of the links, control of the curvature of the band and of the interstices between successive links.

Abstract: A chain is formed from a plurality of links that resemble a fish hook. The links include a shank with one end connected to a barbed hook and an opposite end connected to an eyelet. The chain is formed by passing the hook of one link through the eyelet of another link. By selecting the size and number of the links, the chain may be produced for wear as either a necklace, a bracelet or an anklet.

Abstract: The present invention relates to a device for joining elements forming jeweller articles, such as precious metals and pearls, which device comprises: a pair of pin arranged at respective cross sections of a metal half-ring shaped link, made of a precious material; a pair of opposite holes arranged on the outer surface of a pearl so that the pair of pins can be housed in the holes to form a coupling element between the pearl and the metal ring-shaped link.

Abstract: Wristlet comprising at least three rows of links side by side, the links of two lateral rows with the links of the center row forming modular units articulated between them around transverse axles. The two lateral opposed sides of the center link on the one hand and the internal lateral die of the lateral links of each modular unit on the other hand are interdependent with means to fit these links laterally one in each other in a defined position. The organs for articulating the contiguous modular units are associated to locking organs, elements joining these locking organs to the fitting means to maintain the links of each modular unit fitted one in each other.

Abstract: A flexible strip of material having four predetermined leg segments comprised of left inner leg segment (10), left outer leg segment (14), right outer leg segment (18), and right inner leg segment (22). Said leg segments are distinguishable by three creases comprised of left leg crease (12), center crease (16), and right leg crease (20).

Abstract: A process for manufacturing diamond cut rope chain jewelry from hollow rings of gold material or other precious metal or alloy. The process provides for the formation of hollow rope jewelry having faceted surfaces formed by a diamond cut process. The diamond cut process is facilitated by positioning the chain on the drum of a diamond cut lathe using a tool having a convex head of polished steel that is precisely positioned for urging the chain into position. The tensile strength of the chain is increased by a thermal tempering process to achieve the required tensile strength for resistance to breakage.

Abstract: The present invention is directed to an apparatus and method for fabricating a spiral diamond cut rope chain having at least one strand with an outer surface that is cut into a flat, concave, or other configuration, that is smooth, consistent, and even and is preferably highly reflective to light so as to be visually appealing and desirable. The spiral diamond cut surfaces of the rope chain are formed on the strands of links by cutting away the material of the strands of the rope chain with a rotating diamond blade.

Abstract: The invention concerns a method for welding hinge pins onto links each formed of one or more elements, the links being connected to each other by means of said hinge pins arranged in passages provided for this purpose in the links, each pin being fixed onto one of the links and hinged onto the next link, characterised in that the connection of the pin to the link is made via an arc welding operation with the aid of an electrode in an inert atmosphere without using a solder.

Abstract: A process for making an ornamental chain which has portions of different width consists of subjecting links of same size, same shape and same diameter of the wire to different compression between two clamps. In the chain produced by the process there are portions of constant width and intermediate portions of the degrade type, with increasing or decreasing profile.

Abstract: By means of having taken advantage of certain physical properties of solids with a manufacturing process of incrementally deforming hollow links, there is produced new hollow simulated diamond cut multifaceted jewelry rope chain, which results in a product weighing up to 60% less than its solid counterpart, but which in its aesthetic looks is similar to solid diamond cut jewelry chains, and furthermore, with a hardness greater than the same hollow chain that has not gone through the process. This invention presents a new diamond cut chain, which costs a fraction of the price of a solid chain aesthetically similar, and in which the chain may vary in cross-section, such as forming a square or a hexagon.

Abstract: Starting with a helical chain of large links, of the type known as a "transverse figure-of-eight chain" or "transversely assembled figure-of-eight chain" that can be made by machine, after a preliminary twisting operation in which it is reduced to the general form of a strip with rounded edges, that is to say in the so-called "linx" chain configuration, a further deformation is carried out by swaging it in the direction of the greatest dimension of its cross section, in such a way that its cross section is deformed into a generally square figure.

Abstract: A method of imparting flat facets on hollow chain links intertwined to form a jewelry chain by tightly winding said jewelry chain about a drum of an ice lathe. Then freezing said drum and rotating it with said jewelry chain, next spraying water on said rotating chain in a controlled manner, to freeze at least part of each link of the chain in ice, and finally applying force by means of a pressure roller against at least one of said links of said chain, thereby at least partially flattening the outer wall of said at least one link to form a facet. After melting the ice, the chain is removed from the drum.

Abstract: A watch chain includes first and second sets of linked bases, each base including a body, a pair of parallel, curved, extending portions connected to opposite edges of the body, a projection positioned on a concave bottom of each extended portion for applying a finger-pressure, a beam fixedly mounted to and extending between ends of the extended portions, and an elliptical shaped arm having one end connected with the body and being movable between a raised position for inserting the beam of a second base between the arm and the body, and a folded position to fix the beam of the second base between the arm and the first body; a lock member connected to one end of the first set of linked bases; and a link member connected to one end of the second set of linked bases, with opposite ends of the first and second sets of linked bases being connectable to a watch.

Abstract: The invention is a unitary component that may be substituted intermittently for portions of a jewelry rope chain. The unitary component has connecting means that promotes the integration of the component with the conventional rope chain by receiving onto the component the individual links of the rope chain in their ordinary sequence and position as those links are sequentially and positionally comprised on a conventional rope chain. The use of the component with conventional rope chain segments results in savings of precious metal and labor costs while retaining many of the flexibility and aesthetic advantages of the conventional rope chain. The preferred embodiment of the rope chain is spiral in shape but may take on various other configurations.

Abstract: A link and a chain formed therefrom, wherein the links comprise a shaft portion having first and second opposing ends defining therebetween a longitudinal axis for the link; an enlargement portion connected to the shaft portion at the first end, the enlargement portion having a width which is greater than a width of the shaft portion at the first end; and a mandorla shaped portion having first and second apertures therein, the mandorla shaped portion being connected to the shaft portion at the second end, and the apertures being shaped so as to prevent the enlargement portion from passing therethrough.

Abstract: A jewelry rope chain formed of a number of links of wire of a cross sectional configuration. The links are intertwined to form an outer appearance of a double helix. A predetermined number of the links is required to form a full helix cycle. At least some of the overall geometric shapes of the links within a full helix cycle are different from the overall geometric shapes of the other links within the same helix cycle. The chain can be formed either by initially selecting the links of different geometric shapes and intertwining them in accordance with a desired sequence. Alternately, initially the chain can be formed of uniform links and thereafter the entire chain rolled or reshaped so as to reconfigure the shape of at least some of the links with respect to other of the links within a full helix cycle.

Abstract: A process of forming a metal stampato jewelry piece includes stamping a sheet of metal to produce a hollow front section of a desired shape; stamping a sheet of metal to produce a back section including a ledge defining an opening, the ledge having an outer periphery substantially corresponding to an outer periphery of the front section; and soldering the front section and the back section together such that the ledge outer periphery and the front section outer periphery are substantially aligned. The ledge imparts durability and sufficient rigidity to the stampato pieces to enable joining of the pieces by pins.

Abstract: A method of forming hollow link, facetted chain and the chain formed by the method. The method begins with chain assembled from hollow links having outer wall regions, which links are already soldered together. Generally flattened facets are formed on the hollow link chain by passing the hollow link chain along a longitudinal path, wherein a series of rotating anvils deform inwardly portions of the outer wall regions to thereby form generally flattened facets on at least some of the hollow links to form the hollow link facetted chain.

Abstract: The invention relates to a chain link and a method for the production thereof as well as a chain consisting of connected chain links and a connecting part for connecting chain links. The chain link consists of an endless elongated rod-like part (1) which is characterized in that it is shaped as two pairs of loops (2, 3) and (4, 5) wherein the loops in each pair are substantially parallel and the pairs are arranged in two planes which are turned through 90.degree. with respect to each other. The connecting part consists of a semi-finished chain link and the chain consists of connected chain links as well as possibly connecting parts.

Abstract: A strip (1) is formed by lamination with diffusion, having two longitudinal bands (1A; 1B) of two different metals and two additional thicknesses (1E and 1F) bonded to the metals of said two bands (1A; 1B); the resulting strip is shaped by drawing it into a wire of circular section with a longitudinal slit (13), with said two longitudinal bands (1A, 1B) of different metals on the outside; said wire is wound into a helix, with the slit (13) on the inside of the turns, and the helix is then cut to form pieces (111) in the form of twisted open rings; said twisted pieces are formed into a chain of soldered and twisted links with the orientation of each of said two bands of each link on the same side of the chain, so that it shows two colors.

Abstract: A method of imparting flat diamond cut facets on hollow coiled chain links intertwined to form a jewelry chain, each coiled link having X+Y turns, where X is an integer, preferably from 1-5, and Y is one or a fraction, preferably about 3/4, and where the coiled links have the coil axes oriented diagonal to the length of the chain, includes tightly winding the jewelry chain about a drum of an ice lathe with the coiled links diagonal to the drum surface, each coiled link having at least part of a turn close to the drum surface and at least part of a turn distant from the drum surface, freezing the drum and rotating it along with the jewelry chain, and spraying water on the rotating chain in a controlled manner, to freeze all turns of the hollow coiled links in ice, with the exception of at least part of the coil turns distant from the drum surface. Then a force of a pressure roller is applied to at least part of the coil turns distant from the drum surface to flatten the outer wall of the distant coil turns.

Abstract: A decorative chain is constructed from a series of links, each constructed from a pair of half links. Each half link includes a pair of individually formed or jointly formed quarter links which take the form of generally C-shaped open loops. The free ends of one pair of quarter links are rigidly welded to the free ends of a second pair of quarter links at four separate weld points so as to form a single link.

Abstract: By means of having taken advantage of certain physical properties of solids with a manufacturing process of incrementally deforming hollow links, there is produced new hollow simulated diamond cut multifaceted jewelry rope chain, which results in a product weighing up to 60% less than its solid counterpart, but which in its aesthetic looks is similar to solid diamond cut jewelry chains, and furthermore, with a hardness greater than the same hollow chain that has not gone through the process. This invention presents a new diamond cut chain, which costs a fraction of the price of a solid chain aesthetically similar, and in which the chain may vary in cross-section, such as forming a square or a hexagon.

Abstract: This disclosure relates primarily to the making of compressed single and double arrow jewelry chains, of precious or non-precious metal, and other unique surface designs, from open link chains wherein the regularly repeating apertures of the prior art chains have been substantially eliminated, thereby providing an exceedingly smooth look and silky feel to the completed chain. The compressed chain of this invention is made by first precisely aligning two or more open link chains together, side by side, along a single longitudinal axis, welding, as by soldering or brazing, the aligned open link chains, and subjecting the thusly aligned chains to a series of incremental compression steps, along the longitudinal axis of the aligned curb link chains. In this way, the regularly repeating apertures of the aligned open link chains are substantially eliminated while creating, as in the case of the use of single curb chains as the starting point, novel non-apertured arrow designs.

Abstract: The invention is a unitary component that may be substituted intermittently for portions of a jewelry rope chain. The unitary component has connecting means that promotes the integration of the component with the conventional rope chain by receiving onto the component the individual links of the rope chain in their ordinary sequence and position as those links are sequentially and positionally comprised on a conventional rope chain. The use of the component with conventional rope chain segments results in savings of precious metal and labor costs while retaining many of the flexibility and aesthetic advantages of the conventional rope chain. The preferred embodiment of the rope chain is spiral in shape but may take on various other configurations.

Abstract: A fine jewelry hollow rope chain comprising a plurality of interfitting hollow wire links, each link defining a circumference, each link having a wire cross-section defining a hollow base portion of generally uniform wall thickness and at least one reinforcing rib portion joined on said base portion, said rib portion protruding beyond said base portion along the entire circumference of said link, thereby reinforcing said hollow link against mechanical deformation, chain links for preparing such rope chains and a method of manufacturing same.

Abstract: A rope chain is fabricated of hollow links that have been intertwined to form a rope chain of the double helix type. The hollow rope chain is moved continuously, in a continuous length, over pulley guides whereon the exposed surface of the rope chain is deformed without material removal. Rotating tools, having sloped surfaces, wedge against the outer surface of the rope chain links and flatten them as the tool and chain move in opposite directions relative to each other. The tools have no cutting edges, but deform the rope chain entirely by wedging action of the tool surfaces that interfere with the outer circumference of the rope chain and move the link wall both inwardly and longitudinally. Conventional diamond cutting facet machines, which are used to shear facets, are adapted for use in accordance with the invention by removing the shearing tools and installing wedging tools.

Abstract: A universal joint device includes a number of couplers. Each coupler has a spherical head and a frustum portion secured together for engaging with the frustum portion and the spherical head of the other couplers. A tube has a frustum portion formed on one end for engaging with the spherical head of the couplers and has an annular rib extended radially inward from the other end. A rod has a number of teeth for engaging with the annular rib so as to secure the rod to the tube. The rod has a spherical head formed on one end for engaging with the frustum portion of the couplers.

Abstract: A fine jewelry diamond cut rope chain comprising a double helix rope chain made from tightly interfitting links of precious metal link wire, each link having a small gap formed therein so as to enable one of said links to pass through the gap of another link, said links being intertwined to fit tightly one against another, at least some of the links of the chain having a shallow high luster diamond cut surface band extending on the outer surface of at least part of an outer perimeter of said link, the cross-section of the link wire being substantially of the same shape throughout.

Abstract: A jewelry rope chain, formed of either solid or hollow links, is provided with a novel finish comprising a smooth, continuously curved surface which reflects in a continuous fashion. Also disclosed are novel methods of forming jewelry rope chains which are designed to provide a highly reflective surface with minimal repositioning of the rope chain between cutting steps required.

Abstract: A jointed unit (1) has several adjacent elements (2, 3) connected to one another by a pair of connecting members (5, 6) situated at opposite ends in which they are connected so as to be able to rotate. The members (5, 6), which include the pair of adjacent elements (2, 3) are made integral with one another by a fastening bar (4) connected to the members (5, 6) by screws (7) in a reversible manner. In one embodiment, the members (5, 6) are a pair of links, each having two cylindrical blind holes (5c, 5d, 6c, 6d) into which studs (2c, 2d, 3c, 3d) engage and protrude from the ends of the elements (2, 3) to be connected together.

Abstract: By means of having taken advantage of certain physical properties of solids with a manufacturing process of incrementally deforming hollow links, there is produced new hollow diamond cut jewelry rope chain, which results in a product weighing up to 60% less than its solid counterpart, but which in its aesthetic looks is similar to solid diamond cut jewelry chains, and furthermore, with a hardness greater than the same hollow chain that has not gone through the process. This invention presents a new diamond cut chain, which costs a fraction of the price of a solid chain aesthetically similar.

Abstract: A jewelry rope chain, formed of either solid or hollow links, is provided with a novel finish comprising a smooth, continuously curved surface which reflects in a continuous fashion.

Abstract: A rope chain is made from hollow rectangular links having a trapezoidal cross section. The wider parallel surface of the trapezoid is the outer periphery of the shaped link and is the primary surface of the finished rope chain. The narrower parallel surface of the trapezoidal shape, having a channel which forms a longitudinal seam running around the inside of the link, is an inside surface of the finished rope chain and is not visible in a finished chain. The other two sides of the trapezoid converge in symmetrical relationship to the parallel surfaces, and include an angle that approximately equals 360.degree. divided by the number of links required to form a single cycle of links in a double helix, as viewed in an end view of the rope chain. Adjacent links abut, planar surface to planar surface, and form a close fitting circle with a smooth external surface for the rope chain.

Abstract: The characteristics and the appearance of a bracelet (12), produced from threads (25) of precious metal, are to be improved by a reinforcement (16, 17). The bracelet (12) has a tubular strap (15) in which a preferably elastic reiniforcement (16, 17) is located. The end of the reinforcement (16, 17) is attached to the end of the tubular strap (15) at both ends of a bracelet section.

Abstract: By means of having taken advantage of certain physical properties of solids with a manufacturing process of incrementally deforming hollow links, there is produced new hollow simulated diamond cut multifaceted jewelry rope chain, which results in a product weighing up to 60% less than its solid counterpart, but which in its aesthetic looks is similar to solid diamond cut jewelry chains, and furthermore, with a hardness greater than the same hollow chain that has not gone through the process. This invention presents a new diamond cut chain, which costs a fraction of the price of a solid chain aesthetically similar, and in which the chain may vary in cross-section, such as forming a square or a hexagon.

Abstract: A rope chain is fabricated of links comprising an outer layer of a precious metal of a first color and an inner metal layer of a second color. The links are intertwined to form a rope chain. The links are faceted by diamond cutting techniques wherein the outer surface is partially sheared from the link to a depth such that an area of inner material of the second color becomes exposed and a two-tone link is produced. Facets having more than two color bands can also be produced.

Abstract: A link for a fine jewelry chain which includes a base defining an outward-facing surface, and a raised portion formed integrally with and extending longitudinally along the outward-facing surface of the base, wherein the raised portion has at least one diamond-cut high luster surface formed thereon.

Abstract: By means of having taken advantage of certain physical properties of solids with a manufacturing process of incrementally deforming hollow links, there is produced new hollow diamond cut jewelry rope chain, which results in a product weighing up to 60% less than its solid counterpart, but which in its aesthetic looks is similar to solid diamond cut jewelry chains, and furthermore, with a hardness greater than the same hollow chain that has not gone through the process. This invention presents a new diamond cut chain, which costs a fraction of the price of a solid chain aesthetically similar.

Abstract: The bracelet (1) according to the invention includes an inner chain (2) made up of articulated links (4) including a central part (8) from which two lateral arms (14) project. The bracelet (1) further includes a plurality of decorative elements (6) strung onto the inner chain (2) and blocking means for each decorative element (6) on the chain (2). According to the invention each blocking means comprises a blocking element (38) which is positioned on the chain (2) and which comprises two projecting parts (42) extending laterally beyond arms (14) and, each decorative element (6) comprises a passage (58) provided with a shoulder (60) which bears against the projecting parts (42) when such element (38) is arranged on the chain (2) and the decorative element (38) is strung on said chain.

Abstract: An armband is formed by the succession of central elements 3, intermediate elements 2 and lateral elements 1. Each central element 3 include at each of its ends two fixing pins 13, crossing distinct intermediate elements 2. The ends of these fixing pins 13 are located on the same side of the central element 3, being axially retained into the outside element 1 by rider 19 which authorises a relative rotation of these fixing pins 13 with respect to the outside elements 1.

Abstract: A jewelry rope chain having tightly interfitting links made of wire of a given cross-section, each link having a small gap formed therein, so as to enable one of said links to pass through the gap of a second link, said links being intertwined to fit tightly one against the other and form in-outward appearance a double helix, the improvement comprising each link having a wire cross-section including a major axis defining a longer dimension and a minor axis defining a shorter dimension, said longer dimension being in the plane of the link and the shorter dimension being perpendicular thereto, the ratio of said longer dimension to said shorter dimension being greater than 1.3:1 but less than 3:1.