A method of making tennis bracelets includes coupling together collet elements (2) in a repetitive series, wherein an L-shaped lateral appendage (3) of a collet element is inserted into a through hole (6) of an immediately adjacent collet element and then bent against a face (7) of the collet element to which it belongs. The collet elements are inserted according to the repetitive series into an assembly template (10) implemented as a self-supporting unit provided with fasteners (16) for fastening the unit to first and second carriage supports (22, 36) of first and second machines (18, 19), which cause the assembly template to translate under a die block (26) of a press device (24) of the first machine. The lateral appendages (3) of the collet elements are bent in succession under a laser welding head (38) of the second machine, for welding the appendages (3) to their respective collet elements.

A jewelry link assembly and a method of assembling jewelry chain links are disclosed. The jewelry link assembly comprises a male member comprising a ball portion having two prongs at opposite ends. The jewelry link assembly comprises a female member having two wings. Each wing comprises a prong receiving section. The ball portion is received between the two wings such that the prongs are made to slide into the prong receiving sections provided at the two wings for interlocking the male and female members. The jewelry link assembly further comprises chain links connected at far ends of the male and female members for forming a two-piece design configuration of the chain links together with the male and female members. The chain links, and the male and female members, are connected alternatively and successively to form a jewelry link assembly.

A flexible jewelry cable includes a plurality of helical links. Each link has a body that extends helically about a central axis of the link. Each link includes a protrusion extending from an inner surface of the body at or near ends of the body. Each protrusion defines a through hole that is coaxially aligned with the body. The body defines a female recess on the inner surface of the body, each recess corresponding to one protrusion. The recesses are at or near the ends of the body. One recess of a first one of the links is configured to receive one protrusion of a second one of the links and align the hole of the received protrusion with the hole of one protrusion of the first link. The cable includes a string extending through the aligned holes of the protrusions of the links.

A flexible jewelry cable includes a plurality of helical links. Each link has a body that extends helically about a central axis of the link. Each link includes a protrusion extending from an inner surface of the body at or near ends of the body. Each protrusion defines a through hole that is coaxially aligned with the body. The body defines a female recess on the inner surface of the body, each recess corresponding to one protrusion. The recesses are at or near the ends of the body. One recess of a first one of the links is configured to receive one protrusion of a second one of the links and align the hole of the received protrusion with the hole of one protrusion of the first link. The cable includes a string extending through the aligned holes of the protrusions of the links.

A flexible jewelry cable includes a plurality of helical links. Each link has a body that extends helically about a central axis of the link. Each link includes a protrusion extending from an inner surface of the body at or near ends of the body. Each protrusion defines a through hole that is coaxially aligned with the body. The body defines a female recess on the inner surface of the body, each recess corresponding to one protrusion. The recesses are at or near the ends of the body. One recess of a first one of the links is configured to receive one protrusion of a second one of the links and align the hole of the received protrusion with the hole of one protrusion of the first link. The cable includes a string extending through the aligned holes of the protrusions of the links.

A jewelry link assembly and a method of assembling jewelry chain links are disclosed. The jewelry link assembly comprises a male member comprising a ball portion having two prongs at opposite ends. The jewelry link assembly comprises a female member having two wings. Each wing comprises a prong receiving section. The ball portion is received between the two wings such that the prongs are made to slide into the prong receiving sections provided at the two wings for interlocking the male and female members. The jewelry link assembly further comprises chain links connected at far ends of the male and female members for forming a two-piece design configuration of the chain links together with the male and female members. The chain links, and the male and female members, are connected alternatively and successively to form a jewelry link assembly.

Mourning and memorial jewelry items and methods for manufacturing the same are described. The methods utilize metal implant materials from deceased individuals to create items of jewelry for retention and use by survivors. The overall method includes a planning process that discerns the type of metal implants available and identifies the type of jewelry desired. The planning process establishes a preferred method for manufacture, based on the size and shape of the available implant objects, as well as the desired item of jewelry. The jewelry items are either unitary pieces of jewelry or jewelry stones. The preferred method for transforming the implant object into the item of jewelry will involve machining, annealing or forging, and/or melting and casting. The preferred method is implemented and results in either the finished item of jewelry or a metallic stone that may be set into a jewelry setting.

A mandrel tool comprising a mandrel head having a body, said body including a first end, a second end opposite to the first end, and an exterior surface extending between the first and second ends; and a slit extending at least partially through the exterior surface of the body and having a width to accommodate a sharp edge of a cutting instrument. The slit serves as a guide for the cutting instrument, which cuts through wire wound around the mandrel to simultaneously create a plurality of uniform rings without having to labor further.

The invention relates to a cleaning device for internal cleaning of drain or sewer pipes comprising at least one chain comprising several chain links, two end parts, to one of which one end of the chain/chains is/are fastened and to another of which another end of the chain/chains is fastened, which end parts each comprise a central opening, through which a rotatable element extends. At least some of the chain links of at least one chain of the cleaning device have substantially rectangular outer form having at least one right-angled corner and that these chain links are of hard metal. The invention also relates to a method of manufacturing a chain for the cleaning device, in which the chain links are made by cutting from a hard metal plate, for example by laser cutting.

The invention relates to a cleaning device for internal cleaning of drain or sewer pipes comprising at least one chain comprising several chain links, two end parts, to one of which one end of the chain/chains is/are fastened and to another of which another end of the chain/chains is fastened, which end parts each comprise a central opening, through which a rotatable element extends. At least some of the chain links of at least one chain of the cleaning device have substantially rectangular outer form having at least one right-angled corner and that these chain links are of hard metal. The invention also relates to a method of manufacturing a chain for the cleaning device, in which the chain links are made by cutting from a hard metal plate, for example by laser cutting.