Abstract: In accordance with one embodiment of the invention the packing-wire cutting device includes an electrical electrode assembly comprising a pair of arms pivotally mounted on a bearing shaft, the ends of the arms remote from the bearing shaft carrying each one a rotatable disc together forming an electrode roller supplied with electric power from a supply circuit normally open at the electrode roller which has a gap between its rotatable discs. Further the packing-wire cutting device comprises a conveyor path for the goods to be treated by said device, said goods being provided with a packing of wires crossing the sides of the goods. When the goods passes the packing-wire cutting device the electrode roller is caused to pivot towards the goods side so as to engage against this side to be rotated when the goods is advancing so that when any of the wires is passing the electrode roller it closes the supply circuit whereby the section of the wire located between the rotatable discs will melt off.

Abstract: Band shaped contact material is advanced along an approximately horizontal contact material guide past a displaceable knife and counter-holder which cooperates with a stationary counter-knife to a directly adjacent approximtely horizontal contact piece guide in alignment with the contact material guide for receiving successive contact pieces cut-off by the knives which are ejected from the contact piece guide by horizontal advance of the contact material onto a horizontal surface of a vertically movable electrode of a resistance welding device which raises the contact piece into compressive contact against a contact carrier held on the surface of a stationary upper electrode of the welding device and then the two pieces are welded together. Interconnecting apparatus is operative to simultaneously draw back the contact material after the ejection step into the position necessary for the knives to cut off the next contact piece as the previous contact piece is welded to a contact carrier.

Abstract: This disclosure relates to the production of an ultimately continuous weld between sheets of heat fusible material using a welding apparatus which includes a supporting frame and at least one assembly of electrodes mounted on the frame and being movable between positions in which the electrodes are biased towards each other and positions in which they are disengaged from each other, the apparatus being characterized in that the electrodes are movable longitudinally in the frame together with material being welded thereby during each welding cycle and the movement of the electrodes between welding cycles is such that each individual weld at least abuts the adjacent welds after passage of the material through the apparatus.

Abstract: In a plant for the manufacture of welded gratings composed of longitudinal members and crossbars welded to said longitudinal members, the crossbars are removed one at a time from a store to a retaining device capable of holding two crossbars at a predetermined horizontal spacing between each other. The pair of crossbars is discharged from said retaining device on to a carrying device arranged to carry the pair of crossbars into the welding station and deposit them on the longitudinal members there while still retaining their predetermined horizontal spacing.

Abstract: Contact beads of noble metal are welded to a substrate of less corrosion-resistant metal in an apparatus in which one electrode formed with a receptacle is moved cyclically between a welding position adjacent another, stationary electrode and a remote feeding position. A gap between the electrodes receives the substrate, and blanks of contact bead material are fed into the laterally open receptacle through a stationary guide aligned with the receptacle in the feeding position of the movable electrode in a direction transverse to the direction of electrode movement.

Abstract: A base is mounted on a welding machine and has slide rails. Each rail has paired flat top sides angularly converging upwardly toward one another. A table has slide channels also each having paired flat sides angularly converging upwardly toward one another at angles substantially equal to that of the rails. The table channels rest on the rails with their flat sides in sliding relationship to the flat sides of the rails. When welding forces are applied to the table, the flat sides of the rails and channels jam or wedge into substantially solid electrical contact at their interface due to their angulation. A shield is attached to the end of the table and covers the rails in their exposed projection beyond the table. In a table having two welding locations, a shield is attached at both ends of the table. The shields protect the rails against welding spatter, dust, etc., to keep the rails clean to insure maximum electrical contact.

Abstract: A welding apparatus for welding together arcuate components, for example a platform and web of a brake shoe comprises a pair of opposed clamping members which are relatively movable to engage the web, one on each side thereof, over a substantial portion of the web surface area. The clamping members are continuously rotated by suitable drive arrangement. Preferably, two such pairs of clamping members are provided for clamping respective webs.

Abstract: An apparatus for automatically connecting battery plate units of adjacent cells through apertures in partitions between adjacent cell chambers of battery cases with said connection being effected by pressing lead projections of adjacent battery plate units together within each partition aperture and electrically fusing said projections together to form an electrical connection therebetween and completely fill said aperture and seal said chambers: comprising a work station in said apparatus where said plate units are connected, a conveyor for moving battery cases assembled with plate units into and from said work station, an electrode assembly comprising a pair of opposed electrodes adapted to fit into adjacent cell chambers and over said projections and apertures, indexing means for effecting relative movement of the battery case and electrode assembly at said work station for bringing the battery case into exact registry with the electrode assembly for effecting the connection, means for forcing said electro

Abstract: Apparatus for joining a first workpiece from a supply station to a second workpiece at a work station which accurately positions the first workpiece in engagement with the second workpiece at a predetermined location spaced from the periphery of the second workpiece. Positioning means are provided for transferring the first workpiece from the supply station to the work station in a manner such that the first workpiece is spaced from the second workpiece during such transfer until it is moved to the predetermined location in engagement with the second workpiece. The positioning means includes a transfer guide and a transfer device for transferring the first workpiece along the transfer guide to the work station.

Abstract: A machine for fabricating structural elements such as reinforcement trusses or girders wherein spaced flange elements are welded to a continuous, zig-zag shaped web to form a composite beam. The machine bends flat strands to form the zig-zag webs and then feeds them continuously to a welding means where the webs and flange elements are welded on an intermittent basis into an integral unit.

Abstract: There is disclosed an electrical contact and a method and apparatus for making said electrical contact wherein the contact comprises at least one formed tine portion, a central retaining portion, and a tail portion. Secured to this tine portion is a precious metal contact material comprised of a first layer of a base material and a second layer of a precious metal.

Abstract: Apparatus for automatically welding pipe comprising a cross member positioned between first and second draw rolls, said guide is mounted on said cross member along with adjustable supports containing profile rolls for urging together pipes to be welded.

Abstract: Apparatus for moving a frame of the type for supporting a plurality of integrated circuit chips or die members wherein the frame on a track is moved incrementally along the same by one or both of a pair of pawls pivotally mounted below the track and normally projecting through the plane of the track and into openings in the frame. A reciprocal drive means coupled to the pawls causes the latter to reciprocate, so that the pawls, as they move in reverse, pivot downwardly in the frame and into second frame openings, whereupon the pawls are urged forwardly and they, in turn, advance the frame through a predetermined distance. If the apparatus is used as a die bonder, an improved heat shield is provided for the heater element. Also, an improved die holder is disposed adjacent to and above the heater element. If the apparatus is used as a die test unit, an improved test probe is provided wherein test leads move in engagement with terminals of a die after the die frame has been incrementally advanced.