Abstract: An apparatus for processing chain link fabric including a welding assembly and/or a compressing assembly. The welding assembly is configured to weld together wire-end portions of the chain link fabric. The welding assembly includes a guiding assembly having a finger and a cam, which are configured to restrict the movement of the wire-end portions while the welding assembly welds them together. The finger and the cam are configured to move relative to the wire-end portions both before and after the wire-end portions are welded together. The compressing assembly is configured to compress the wire-end portions after they are welded together. The compressing assembly includes a stabilizing assembly having a stabilizing die, which is configured to interface with the chain link fabric and to restrict the movement of the welded wire-end portions while the compressing assembly compresses the welded wire-end portions.

Abstract: A plate link (1), for attaching a clasp link (5) to the end of an ornamental chain (4), is provided for welding electrically at point (2) to constitute an unopenable ring, at one side of which is attached the end (3) of the ornamental chain (4) and at the other side of the clasp link (5) of a normal type. The novel method of attaching the end of a chain to a clasp link by means of the plate link involves the use of electrically welding the plate link and is carried out in the absence of any weld material.

Abstract: A robotic chain assembly which uses two clamps, a robot gripper and a computer with auxiliary stations. The assembly both measures and cuts the chain, secures fasteners to the ends of the chain and secures the fasteners one to the other.

Abstract: An apparatus for discontinuously and simultaneously soldering an ornamental chain on two locations and with recovery of the cores which hold the loops, comprises a reel (2) for winding and unwinding the chain to be soldered, a pair of rollers (3,4) for advancing the chain, a movable and rotating vice for carrying the chain to the soldering device. The latter comprises two flame injectors, arranged opposite one to the other and acting on the loops of the chain, a pair of vertically movable clamps for holding the chain during the soldering operation, in the two predetermined locations. Finally after the soldering operations, the cores are removed from the chain and are separately collected.

Abstract: An improved passenger car tire chain employing heat treated medium carbon steel is disclosed. The improved tire chain is approximately twice as durable as that presently furnished to meet NACM-5179(TC) for Type PL chains when AISI 1026 or 1029 carbon steel is employed at least for links of a cross chain meeting the road surface. The cross chain links are closed by welding prepared abutting link ends which have been previously beveled. After being welded closed, the cross chain links are case hardened, quenched, tempered and air cooled. The improved tire chain is then assembled in a conventional manner to include a pair of side members, fastening means to secure a end of each side member to the other end, and a plurality of cross chains extending between the sidewall members at preselected intervals.

Abstract: In a tire chain, at least one junction point has a horizontal link having the form of a shackle with a main part and with outward-directed ends adjoining this. The hardness of the main part is greater than the hardness of the ends facing one another, these being joined to one another by means of a connecting part which is mushroom-shaped. The connecting part in turn has a hardened head and a hardened foot which are connected to one another via a soft shank.

Abstract: A machine for the production of paired chains including a feeding assembly for the chains, a welding assembly of the chains and a take-up device for the produced chain. The feeding assembly for the chains includes a transport mechanism thereof suitable for the engagement within corresponding side by side links and for realizing the simultaneous and intermittent advancement without modifying the symmetry of their reciprocal position with respect to the advancement axis. The transport mechanism, constituted in particular of needle-shaped members, is provided with a translational reciprocating motion in the advancement direction and of a reciprocating lifting and lowering motion in an orthogonal direction. The welding assembly, constituted of two equal assemblies in series, provides for the simultaneous movement of means delivering the welding flame and the welding material. The take-up device operates synchronously with the feed of the chains in order to maintain constantly taut the chain during the welding.

Abstract: An apparatus for automatically soldering flexible jewelry chains to certain parts such as locks or ornamental members wherein the parts to be soldered to the chain are retained by a retaining device and the chain is disposed on a carrier which is movable toward and away from the retaining device a distance corresponding to the desired length of the chain section to be soldered to the part, the carrier having a gripper for engaging a particular chain link, a chain position sensor arranged next to the gripper so as to sense the position of the link next to the link to be soldered, a control device associated with the position sensor and adapted to correct the carrier position until the correct chain link position is obtained, a cutting mechanism arranged adjacent the gripper for cutting the chain link held by the gripper, and soldering means arranged adjacent the part retaining device for soldering the cut chain link upon movement thereof in abutment with the part to which it is to be soldered.

Abstract: A replacement hasp for a railroad sliding door lock mechanism, a kit for making the hasp, and method for making the replacement using the kit are disclosed in two embodiments. The kit includes a member which partially defines an eye, sized to fit loosely about the existing hasp-retaining link on the car, and an eye-completion member arrayed to mate with the first member and form a replacement hasp when affixed thereto, as by welding with shear welds. In the first embodiment, the first member is generally U-shaped and the second member includes a tongue portion which mates between the ends of the partial-eye-defining member such that the two can be "telescoped" together to form a replacement hasp of different lengths to accommodate changes in the door or door jamb of the railroad car. The two main members include furrows extending along the parting lines between them so as to aid in welding the main members together and to form a stronger affixture than is possible under the prior commercial practice.

Abstract: Automatic apparatus for the treatment of the links of metallic chains which comprises, in operative sequence: means for the automatic application of soldering powder to the chains being treated; means for the automatic removal of the excess of soldering powder applied to said chains; and means for the automatic application of a powder which isolates each chain link from the next during the soldering operation. The application and removal means also have the function of movable guide means for the chains being treated.

Abstract: A method and apparatus are provided for soldering abutting ends of links of chains of precious metals. The soldering is accomplished by applying solder to the abutting ends, continuously feeding the chain onto a rotating surface such as a rotating table, heating the chain to melt the solder, and removing the chain from the table. The chain is fed at a slightly higher rate than the rational speed of the table to cause the links to be pushed into each other to avoid tensions from developing in said links during the heating step.

Abstract: For the successive welding of the joints of consecutive links forming a link chain, the chain is advanced in a chain welding machine to bring a link to be welded directly below a welding position; the two links flanking the link to be welded are aligned in a common plane of alignment while a tensioning force is applied to the chain parallel to the direction of chain advance. Thereafter, the link to be welded is raised into a welding position in a plane disposed at 90.degree. to the plane of alignment. Subsequently, the link is immobilized in the welding position and its joint is welded. Upon completion of the welding step, the just-welded link is lowered from the welding position.