Abstract: A ball chain including metal balls with a small wall thickness and can withstand a large tensile load are provided. A method of manufacturing the same includes rounding a piece of metal to form rotation-axis symmetric bodies (22) and connecting the rotation-axis symmetric bodies (22) in a chain-like manner with connecting shafts. Each of the connecting shafts has connecting heads on both end portions. Each of the rotation-axis symmetric bodies (22) has a butt seam (24) in a direction of a rotation axis of the rotation-axis symmetric body and a weld part (25) at least one part of the butt seam (24).

Abstract: A ball chain including metal balls with a small wall thickness and can withstand a large tensile load are provided. A method of manufacturing the same includes rounding a piece of metal to form rotation-axis symmetric bodies 22 and connecting the rotation-axis symmetric bodies 22 in a chain-like manner with connecting shafts. Each of the connecting shafts has connecting heads on both end portions. Each of the rotation-axis symmetric bodies 22 has a butt seam 24 in a direction of a rotation axis of the rotation-axis symmetric body and a weld part 25 at at least one part of the butt seam 24.

Abstract: An accessory in the form of a metal-wire meshed tube body having a dual structure is provided wherein a metal-wire meshed tube body with fine mesh density is incorporated inside a metal-wire meshed tube body with coarse mesh density. The accessory is provided in the form of a combination of a couple of meshed tube bodies formed by weaving metal wire to have respective different mesh density, wherein a dual-structure meshed tube body 3 is composed of a metal meshed tube body 1 with coarse mesh density positioned outwardly and a metal meshed tube body 2 with fine mesh density positioned inwardly.

Abstract: Method for producing a decorated adjuster for a necklace or choker in which a tube of elastic is inserted into a metal pipe to thereby form a raw material. The raw material is moved along a longitudinal axis while being rotated and pressed between a pair of molds having adjoining concavities formed between ends of the mold and in opposed relation to concavities in the other mold. The concavities have a shape gradually approaching a hemispherical form in a direction from an entry end to an exit end whereby the last concavity has a hemispherical form such that the raw material is progressively formed into a shell element. The shell elements have an inner surface coated with the elastic material and are formed upon the continual movement of the raw material through the molds. The shell elements are separated from one another and a pair of opposed through apertures are formed to thereby form the decorated adjuster.