Abstract: A method for rendering automatic the production of ornamental chains of the kind known as "partridge's eye" and the like, wherein two link elements shaped as a turn are linked to form a link of the chain so that the free ends of one are roughly at the center of the other. Then the link is compressed transversally and axially to cross said end portions of the two link elements, so that the free ends of one element come into contact with the internal contour of the other. The link formed in this way is twisted, at its ends, welded in correspondence with the overlap points of the two link elements, and then linked to a link element suitable to form the subsequent links.

Abstract: A machine for the production of an ornamental chain known as "bow-type" chain, the chain consisting of a sequence of large links, twisted in a figure-of-eight shape and incorporating a smaller link, linked together by smaller links. The machine comprises a first and a second station for forming and linking the small links and the large links and a transportation gripper which, beside transferring the chain in formation from one station to the other one, takes part in the formation of the links in both stations. An auxiliary gripper is provided which is integral with the transportation gripper, for the positioning of the smaller link on the large link, while the latter is twisted to incorporate the small link. Two small links for every large link are produced in the respective stations and, during the production of the small links to be incorporated in the large links, the large link production station is temporarily stopped.

Abstract: An apparatus for producing ornamental chains of the type known as "peacock eye", formed by a sequence of pairs of links, of the twisted type, each pair including one small and one large link, which are concentric, the large link engaging the large and small links of the immediately preceding and subsequent pairs. The apparatus is substantially of the type capable of producing chains having alternating links, and comprises, in association with the unit for producing the large links, devices for advancing the chain already formed towards an elevated collection unit and for moving the end length of chain, freely suspended, to bring it successively into alignment with the spiral of wire from which the large link is made and with the unit for forming the said large link already concatenated. A mobile pincer undertakes the transportation of the small links towards the production unit of the large links and the allocation of the latter to the first loop of the spiral.