Abstract: A method of manufacturing jewelry and a chain article formed therefrom that results in a product substantially lighter than its solid counterpart. A length of wire mesh or woven wire type of “fabric” having a hollow seamed wire with a non-precious core of a width and length corresponding generally to the proportions of the jewelry chain to be created is provided. The non-precious core is then removed by one of many methods. Then, a series of hollow link sections are received on the length of wire mesh such that the interior surfaces of the links surround the mesh. The links are arranged in an end-to-end abutting relationship upon the mesh until the length of chain desired is reached. Alternatively, a spiral resembling a spring may be used.

Abstract: Device for closing a chain, particularly a bicycle chain, comprising a first and a second pair of end outer plates connected by at least one pair of inner plates, a pair of rivets so engaging a pair of end holes of the first and the second pair of outer plates and the corresponding holes of a pair of, inner plates arranged at the ends of the chain.

Abstract: Notched areas are provided on the outer periphery of a flat plate in the coining process to allow material of said plate flow more easily toward the periphery during the coining process. Use of flat plate provides a more economical way of making elements with accurate size and dimensions for continuously variable transmission belt.

Abstract: Several methods of forming links are disclosed, whereby the outer peripheries of such links are contoured prior to assembly into rope chains. In one embodiment, the wire used in the formation of intertwinable links is contoured and then cut into individual, pre-contoured links. In another embodiment, the outer periphery of non-contoured links are individually contoured prior to the intertwining of such links to form actual rope chains. In another embodiment, individual links are stamped with inner and outer peripheries of different shapes. In yet another embodiment, individual links are collectively contoured, preferably after arrangement on a support such as an ice lathe or a mandril. Such contouring can be accomplished by hand, machine or the like. If such links are not already provided with a gap, then a gap can be formed into the links as part of the contouring step.

Abstract: Several methods of forming links are disclosed, whereby the outer peripheries of such links are contoured prior to assembly into rope chains. In one embodiment, the wire used in the formation of intertwinable links is contoured and then cut into individual, precontoured links. In another embodiment, the outer periphery of non-contoured links are individually contoured prior to the intertwining of such links to form actual rope chains. In another embodiment, individual links are stamped with inner and outer peripheries of different shapes. In yet another embodiment, individual links are collectively contoured, preferably after arrangement on a support such as an ice lathe or a mandril. Such contouring can be accomplished by hand, machine or the like. If such links are not already provided with a gap, then a gap can be formed into the links as part of the contouring step.

Abstract: Several methods of forming links for use with the creation of rope chains is disclosed, whereby the outer peripheries of such links are contoured prior to assembly into rope chains. In one embodiment, the wire used in the formation of intertwinable links is contoured and then cut into individual, pre-contoured links. In another embodiment, the outer periphery of non-contoured links are individually contoured prior to the intertwining of such links to form actual rope chains. In another embodiment, individual links are collectively contoured, preferably after arrangement on a support such as a mandril. Such contouring can be accomplished by hand, machine or the like.

Abstract: A method of manufacturing jewelry and a chain article formed therefrom that results in a product substantially lighter than its solid counterpart. A length of wire mesh or woven wire type of “fabric” having a hollow seamed wire with a non-precious core of a width and length corresponding generally to the proportions of the jewelry chain to be created is provided. The non-precious core is then removed by one of many methods. Then, a series of hollow link sections are received on the length of wire mesh such that the interior surfaces of the links surround the mesh. The links are arranged in an end-to-end abutting relationship upon the mesh until the length of chain desired is reached. Alternatively, a spiral resembling a spring may be used.

Abstract: A jewelry chain section and a method of forming the same having a spiral, twisted appearance, involves the winding of a wire on a support and the controlled manipulation of such wound wire during or after removal from the support. The wound wire comprises individual spirals that are twisted relative to each other, such that the individual spirals appear in a staggered formation, with the appearance of a chain section being varied by the number of spirals that are twisted at a particular time and the extent or angular dimension of the rotation imparted to such spirals.

Abstract: A chain tool used to disassemble or assemble a chain includes a set of spacers allowing micro adjustability to facilitate first and second anvil surface contact with chain plates when chain connection pins are being displaced or replaced to disassemble or reassemble a chain.

Abstract: A method of manufacturing jewelry and a chain article formed therefrom that results in a product substantially lighter than its solid counterpart. A length of wire mesh or woven wire type of “fabric” having a hollow seamed wire with a non-precious core of a width and length corresponding generally to the proportions of the jewelry chain to be created is provided. The non-precious core is then removed by one of many methods. Then, a series of hollow link sections are received on the length of wire mesh such that the interior surfaces of the links surround the mesh. The links are arranged in an end-to-end abutting relationship upon the mesh until the length of chain desired is reached. Alternatively, a spiral resembling a spring may be used.

Abstract: A method of decorating items of jewelry. The method includes the steps of bringing about a translational relative movement between the item and a cutting tool along the longitudinal axis of the item, and driving the tool with a cutting movement in contact with the surface thereof, along preselected cutting paths, in order to produce corresponding decorative marks on the surface. The method further includes the step of providing a support for the item, the support being rotatable about an axis extending along the axis of the relative translation between the tool and the item so that the tool is driven in contact with the surface during the combined and simultaneous rotary and translational movement of the item.

Abstract: A chain formed by interconnecting rubber rings of the same or various shapes. The rings are either solid or non-solid and are interconnected such that the individual rings are moveable relative to each other and yet are substantially inseparable.

Abstract: A method of manufacturing jewelry and a chain article formed therefrom that results in a product substantially lighter than its solid counterpart. A length of wire mesh or woven wire type of “fabric” having a hollow seamed wire with a non-precious core of a width and length corresponding generally to the proportions of the jewelry chain to be created is provided. The non-precious core is then removed by one of many methods. Then, a series of hollow link sections are received on the length of wire mesh such that the interior surfaces of the links surround the mesh. The links are arranged in an end-to-end abutting relationship upon the mesh until the length of chain desired is reached. Alternatively, a spiral resembling a spring may be used.

Abstract: The invention relates to a chain assembly method for joining a single or multiple link-plate chain having alternating, uncranked outer and inner chain links using prefabricated inner chain links in particular comprising two parallel link plates and parallel hollow pins connecting the latter. This assembly method is to be simplified as compared with production methods used hitherto for link plate chains.

Abstract: A jewelry rope chain having links interwoven together to form a double helix configuration. Each link has a cross section with the largest transverse distance across the cross section defining a first dimension. Each link has a interior space and a gap along the periphery of the length. The widest dimension of the interior space in a direction consistent with the direction of the gap has a dimension which is less than three times the first dimension. Thus, ratios of approximately 2:1 can be achieved.

Abstract: A jewelry chain link suitable for intertwining with other jewelry chain links to form a jewelry chain comprises an inner periphery, an outer periphery, a thickness defined between the inner and outer peripheries and a gap extending between the inner and outer peripheries for intertwining one jewelry chain link with another. First and second outermost edge dimensions along the outer periphery are defined relative to a plane extending through the gap, such that the distance from the plane to each of the first and second outermost edges is different.

Abstract: A closed-link element and a chain made from such link elements are manufacturing by a process, wherein each link element exhibits a unique visual property, such as coloration, surface texture, reflectivity, design feature or characteristic, shape, or other visually attractive appearance. Methods of construction include surface pre-texturing, stamping, simultaneous surface texturing and stamping, and wire bending. Such unique visual property traits for the succession of link elements results in a more attractive, fanciful, more delicate and interesting fashion item. Each of the interconnected link elements may have the same or different visual properties, and may have multiple portions of varying color, texture, or other visual properties. In other aspects of the invention, each link element may have differently shaped portions. Additionally, the interior and/or exterior edges of the link element may exhibit different shapes, colors, patterns, or textures.

Abstract: In a method of making a chain, in particular a round steel chain of tempered steel, a chain strand is produced in a conventional manner and subject to the usual heat treatment of normalizing, hardening and annealing. Annealing is implemented at a low temperature level of below 200° C. A tempered steel is used having a microstructure which, after hardening and annealing, has a stable residual austenite content between 3% and 10%. After the final calibration process, the chain strand is subjected to a thermal aftertreatment at a temperature between 190° C. and 250° C. This relieves stress resulting from the calibration process and the associated work-hardening. In this way, the notch impact energy capacity is enhanced.

Abstract: A jewelry link is formed of a general planar configuration in which the outer sides of the link are formed of sculpted or faceted surfaces to enhance the reflectivity of the link and a jewelry chain formed of a plurality of the links.

Abstract: A method of forming jewelry articles comprises the step of fabricating sheets of jewelry article halves, bringing such sheets together, fastening the articles halves together and separating the individual jewelry articles from the sheets by die punching or the like.

Abstract: Jewelry pieces, for example, earrings, pendants, rings and the like, made of metal such as gold or silver and the like, with special surface texturing to improve and enhance the light-reflecting characteristics of the jewelry. The surface texturing is formed by forming a series of grooves by the process of diamond-cutting the surface of the jewelry piece to divide the surface thereof into a plurality of adjacent, four-sided regions, each of which is bounded by four diamond-cut grooves and defines a mesa with at least four light-reflecting sloping sides. The mesas are further subdivided by forming a pair of diamond-cut grooves that criss-cross one another, thereby dividing the mesas in the four-sided regions into four sub-mesas, each having at least three sloping light reflecting sides. Preferably, first gemstones are set at the junctures of the four-sided mesas and second gemstones are set at the center, where the four sub-mesas meet.

Abstract: A method of manufacturing jewelry and a chain article formed therefrom that results in a product substantially lighter than its solid counterpart. A length of wire mesh or woven wire type of “fabric” having a hollow seamed wire with a non-precious core of a width and length corresponding generally to the proportions of the jewelry chain to be created is provided. The non-precious core is then removed by one of many methods. Then, a series of hollow link sections are received on the length of wire mesh such that the interior surfaces of the links surround the mesh. The links are arranged in an end-to-end abutting relationship upon the mesh until the length of chain desired is reached. Alternatively, a spiral resembling a spring may be used.

Abstract: Several methods of forming links are disclosed, whereby the outer peripheries of such links are contoured prior to assembly into rope chains. In one embodiment, the wire used in the formation of intertwinable links is contoured and then cut into individual, precontoured links. In another embodiment, the outer periphery of non-contoured links are individually contoured prior to the intertwining of such links to form actual rope chains. In another embodiment, individual links are stamped with inner and outer peripheries of different shapes. In yet another embodiment, individual links are collectively contoured, preferably after arrangement on a support such as an ice lathe or a mandril. Such contouring can be accomplished by hand, machine or the like. If such links are not already provided with a gap, then a gap can be formed into the links as part of the contouring step.

Abstract: A jewelry link made from square crossectional metal wire has a C-shape when the link is bent within a specially configured clamp over a smooth, uncut mandrel, wherein the formed C-shaped links are diamond shaped in cross section. The links further have an outer circumference at their widest point formed by one of the four corner seams of a hollow or solid square wire, which is rotated 45 degrees onto one of its straight longitudinally extending edges before being bent around a smooth mandrel. In that manner, the link is considerably wider than a link formed from square wire which is wrapped upon one of its surfaces over a mandrel.

Abstract: A chain which does not generate hydrogen brittleness is formed with components having improved wear resistance. At least one part of the chain, for example a surface, is covered with a diamond-like amorphous carbon coating (DLC). Further, metallic particles are dispersed into the diamond-like amorphous carbon coating.

Abstract: There are proposed a track link production method capable of providing markedly improved wear life with good cost performance and a track link produced by this method. To this end, the track link production method includes a heat treatment process (Steps 4, 5) of applying quenching and low temperature tempering treatment to a whole link material after hot forging (Step 2), and is designed such that desired machining is applied to the link material (Step 3) before the heat treatment process (Steps 4, 5) and such that after the heat treatment process (Steps 4, 5), tempering (Step 6) and finish machining (Step 7) are sequentially applied to some of the parts which have undergone the machining process, the some parts including at least parts where high dimensional accuracy is required.

Abstract: A method of manufacturing jewelry and a chain article formed therefrom that results in a product substantially lighter than its solid counterpart. A length of wire mesh or woven wire type of “fabric” having a hollow seamed wire with a non-precious core of a width and length corresponding generally to the proportions of the jewelry chain to be created is provided. The non-precious core is then removed by one of many methods. Then, a series of hollow link sections are received on the length of wire mesh such that the interior surfaces of the links surround the mesh. The links are arranged in an end-to-end abutting relationship upon the mesh until the length of chain desired is reached. Alternatively, a spiral resembling a spring may be used.

Abstract: A feeding assembly (10) for machines (M) treating multicolor endless wire-like elements (21) is disclosed, comprising a frame (11) supporting a bobbin (12) on which the wire-like element (21) is wound, a driving unit (13) for the bobbin (12) to cause rotation of the wire-like element (21) around its longitudinal axis (X) and a detection unit (14) of the rotation of the wire-like element (21) around its axis (X). The detection unit is arranged downstream of the bobbin (12) and emits as an output (14a) a logic signal. A central unit (15) operatively connected to the detection unit (14) acquires and processes the logic signal and controls the driving unit (13). The detection unit (14) comprises an optical detector (30) with adjustable sensitivity for reading one of the colors.

Abstract: A chain link of hollow construction and substantially uniform thickness, for intertwining with other chain links to form a jewelry chain, has a non-annular cross-section throughout the link with the cross-section being symmetric along a centerline plane through said cross-section. The cross-sectional shape of the link preferably has on each side of the centerline plane, at least two sides that meet at a point of inflection. On each side of the centerline plane, at least one side preferably converges toward said centerline plane. A reduction in manufacturing costs and precious metal used to form the links and therefore the chain is realized by using a non-annular cross-section having such constructional qualities.

Abstract: A chain with mutually connected chain links (1, 2) each comprising a back portion and two parallel wall portions protruding substantially perpendicularly therefrom, in which wall portions corresponding rivet holes have been provided in each of the two and members of the chain link, wherein the chain links (1, 2) are connected with one another by means of an end member of a chain link with a comparatively narrow (2) back portion which is inserted into an end member of a neighbouring chain link with a comparatively broad back portion (1) such that the rivet holes (1c, 2c) in the parallel wall portions of the two end members (1a, 1b,2a-2b) are positioned opposite one another for engaging a river (3) or a shaft member.

Abstract: A wear resistant chain, which smoothly articulates and slides for a long period of time without generating unusual wear elongation even if used together with an extremely deteriorated lubricating oil having a high degree of oxidation, has both ends of a bushing are force-fit into bushing holes of a pair of inner plates respectively and both ends of a connecting pin which is rotatably mounted into the bushing are force-fit into pin holes of a pair of outer plates disposed on both of the outer sides of the pair of inner plates. The bushing uses the base material of one steel selected from an austenite stainless steel, a martensite stainless steel, a precipitation-hardening steel, a high-carbon chromium bearing steel and an alloy tool steel each subjected to heat curing.

Abstract: Jewelry pieces, for example, earrings, pendants, rings and the like, made of metal such as gold or silver and the like, with special surface texturing to improve and enhance the light-reflecting characteristics of the jewelry. The surface texturing is formed by forming a series of grooves by the process of diamond-cutting the surface of the jewelry piece to divide the surface thereof into a plurality of adjacent, four-sided regions, each of which is bounded by four diamond-cut grooves and defines a mesa with at least four light-reflecting sloping sides. The mesas are further subdivided by forming a pair of diamond-cut grooves that criss-cross one another, thereby dividing the mesas in the four-sided regions into four sub-mesas, each having at least three sloping light reflecting sides. Preferably, first gemstones are set at the junctures of the four-sided mesas and second gemstones are set at the center, where the four sub-mesas meet.

Abstract: A jewelry link made from square crossectional metal wire has a C-shape when the link is bent within a specially configured clamp over a mandrel, wherein the formed C-shaped links are diamond shaped in cross section. The links further have an outer circumference at their widest point formed by one of the four corner seams of a hollow or solid square wire, which is rotated 45 degrees onto one of its straight longitudinally extending edges before being bent around a mandrel. In that manner, the link is considerably wider than a link formed from square wire which is wrapped upon one of its surfaces over a mandrel.

Abstract: A jewelry rope chain having links interwoven together to form a double helix configuration. Each link has a cross section with the largest transverse distance across the cross section defining a first dimension. Each link has a interior space and a gap along the periphery of the length. The widest dimension of the interior space in a direction consistent with the direction of the gap has a dimension which is less than three times the first dimension. Thus, ratios of approximately 2:1 can be achieved.

Abstract: Several methods of forming links are disclosed, whereby the outer peripheries of such links are contoured prior to assembly into rope chains. In one embodiment, the wire used in the formation of intertwinable links is contoured and then cut into individual, pre-contoured links. In another embodiment, the outer periphery of non-contoured links are individually contoured prior to the intertwining of such links to form actual rope chains. In another embodiment, individual links are stamped with inner and outer peripheries of different shapes. In yet another embodiment, individual links are collectively contoured, preferably after arrangement on a support such as an ice lathe or a mandril. Such contouring can be accomplished by hand, machine or the like. If such links are not already provided with a gap, then a gap can be formed into the links as part of the contouring step.

Abstract: A decorative rope chain and a manufacturing process to produce a rope chain in which each link element used as a basic building element exhibits a unique visual property, such as surface texture, coloration, attribute, feature, characteristic, shape or other physical appearance. Such unique visual property traits for the succession of link elements results in a more attractive, fanciful, more delicate and interesting fashion item. Each of the interconnected link elements may have a first major surface exhibiting a first visual property and an opposite second major surface exhibiting a second, perceptively different, visual property. In other aspects of the invention, the major surfaces of the link elements may have differently colored or textured surface portions. In yet another aspect of the invention, each link element may have differently shaped portions. Similarly, the interior and/or exterior edges of the link element may exhibit different shapes, colors, patterns, or textures.

Abstract: A chain link for intertwining with other chain links to form a jewelry chain is machine formed by contouring the outer periphery of the link without any reduction in material volume while the link thickness is being compressed and reduced. The outer periphery is preferably machine contoured into an octagonal shape and the link is substantially flattened on all sides such that a cross-section taken through the contoured link is preferably substantially rectangular.

Abstract: Rope chain link elements and a manufacturing process to make such link elements, each link element exhibiting a unique visual property, such as coloration, surface texture, reflectivity, design feature or characteristic, shape, or other visually attractive appearance. Methods of construction include surface pre-texturing, stamping, simultaneous surface texturing and stamping, and wire bending. Such unique visual property traits for the succession of link elements results in a more attractive, fanciful, more delicate and interesting fashion item. Each of the interconnected link elements may have the same or different visual properties, and may have multiple portions of varying color, texture, or other visual properties. In other aspects of the invention, each link element may have differently shaped portions, such as adjoining and connecting geometric or heart shaped segments. Additionally, the interior and/or exterior edges of the link element may exhibit different shapes, colors, patterns, or textures.

Abstract: The link plates, bushes or rollers of a transmission chain are treated so as to produce a surface layer of iron bisulphide. The surface improves the resistance of the chain to wear and also accelerates the running-in process.

Abstract: The invention relates to a chain assembly method for joining a single or multiple link-plate chain having alternating, uncranked outer and inner chain links using prefabricated inner chain links in particular comprising two parallel link plates and parallel hollow pins connecting the latter. This assembly method is to be simplified as compared with production methods used hitherto for link plate chains.

Abstract: Rope chain link elements and a manufacturing process to make such link elements, each link element exhibiting a unique visual property, such as coloration, surface texture, reflectivity, design feature or characteristic, shape, or other visually attractive appearance. Methods of construction include surface pre-texturing, stamping, simultaneous surface texturing and stamping, and wire bending. Such unique visual property traits for the succession of link elements results in a more attractive, fanciful, more delicate and interesting fashion item. Each of the interconnected link elements may have the same or different visual properties, and may have multiple portions of varying color, texture, or other visual properties. In other aspects of the invention, each link element may have differently shaped portions, such as adjoining and connecting geometric or heart shaped segments. Additionally, the interior and/or exterior edges of the link element may exhibit different shapes, colors, patterns, or textures.

Abstract: A method and apparatus for making faceting hollow or solid jewelry chains involves subjecting the chain wrapped around the drum of an ice lathe to the rotary motion of a cutting wheel essentially perpendicular to the length of the drum. The cutting wheel has a plurality of teeth and is fitted at the end of an arbor held by two bearings clamped to a flat steel platform which is adapted to the advance mechanism arm of the ice lathe. An electric motor mounted on the flat platform turns a shaft that is fitted with pulleys to allow the rotary power of the shaft to be transmitted to the arbor. The direction of the turning of the cutting wheel determines whether the cutting wheel is used to flatten and facet a hollow chain link or to cut a solid chain link. The cutting wheel's diameter and quantity of teeth is variable.

Abstract: A solid wire of precious metal, such as gold, is drawn through a die which has a groove forming element disposed in a drawing channel located between the inlet and outlet of the die. The hollow wire exiting the die has an eccentric longitudinal open groove extending axially along the wire and embraced by a pair of tapered arms or cusps. The solid portion of the hollow wire is provided with a thick wall portion that is particularly adapted for forming diamond cut facets.

Abstract: A method for joining a plate chain link is to be improved, in which at least one plate is connected to at least one bolt by way of a pressing and aligning process. This is achieved by the measures that the bolt is centered in relation to a main chain axis by the simultaneous active application of symmetrical clamping forces to the faces and the least one plate is pushed by a joining lift relative to the bolt into a position symmetrical to the main chain axis. Furthermore, the invention relates to a device for carrying out the method.

Abstract: Several methods of forming links for use with the creation of rope chains is disclosed, whereby the outer peripheries of such links are contoured prior to assembly into rope chains. In one embodiment, the wire used in the formation of intertwinable links is contoured and then cut into individual, pre-contoured links. In another embodiment, the outer periphery of non-contoured links are individually contoured prior to the intertwining of such links to form actual rope chains. In another embodiment, individual links are stamped with inner and outer peripheries of different shapes. In yet another embodiment, individual links are collectively contoured, preferably after arrangement on a support such as an ice lathe or a mandril. Such contouring can be accomplished by hand, machine or the like. If such links are not already provided with a gap, then a gap can be formed into the links as part of the contouring step.

Abstract: A jewelry rope chain exhibiting distinctive visual properties and apparatus and method for creating distinctive visual properties in an assembled rope chain. The distinctive visual properties may be imparted to a length of rope chain assembled with link elements, having the appearance of intertwining helical rope strands. Only one helical rope strand, or both helical rope strands, or any portion of only one helical rope strand, or any portion of both helical rope strands, is colorized after assembly of the length of rope chain so as to exhibit a color for such helical rope strand, or a portion thereof, different from its color prior to colorization.

Abstract: Procedure to obtain the diamond effect on a precious metal chain with hollow links, that includes the following phases: Advancing step by step of a semi-manufactured product chain made of hollow links, by means of a cold moulding station; At each stop, in the moulding station, carrying out in logical correspondence the descent towards a matched mould, of at least one core and at least one mould, in which the core can be moved perpendicularly through the mould, placed inside each individual link of the corresponding segment of chain, disposing the perimeter surface in contact with the interior perimeter of each link; Lowering the mould with simultaneous deformation and disposition of each link; Partially raising the core, with the mould and matched mould remaining in closed position; and ending the ascension of the core until extraction of the corresponding link, with ascension towards the top part of the mould for a successive cycle that must be carried out on the segment of successive links.

Abstract: A chain link for intertwining with other chain links to form a jewelry chain is machine formed by contouring the outer periphery of the link without any reduction in material volume while the link thickness is being compressed and reduced. The outer periphery is preferably machine contoured into an octagonal shape and the link is substantially flattened on all sides such that a cross-section taken through the contoured link is preferably substantially rectangular.

Abstract: Several methods of forming links for use with the creation of rope chains is disclosed, whereby the outer peripheries of such links are contoured prior to assembly into rope chains. In one embodiment, the wire used in the formation of intertwinable links is contoured and then cut into individual, pre-contoured links. In another embodiment, the outer periphery of non-contoured links are individually contoured prior to the intertwining of such links to form actual rope chains. In another embodiment, individual links are collectively contoured, preferably after arrangement on a support such as a mandril. Such contouring can be accomplished by hand, machine or the like.

Abstract: A rocker joint pin for use in a chain to articulately interconnect link plates of the chain has a beveled edge at opposite end faces thereof. The beveled edge is formed by forming a V-shaped groove transversely across a surface of a continuous wire and subsequently severing the wire at the bottom of the V-shaped groove.