Abstract: A gate lock housing mounted against the rear face of the front platen of an extrusion press has a passage through it aligned with a passage through the platen. A tubular block is normally disposed in the housing passage where it is held by releasable gate lock means. Behind this block is a laterally movable carrier, in which is seated a bolster member having a passage through it aligned with the block passage. An indirect-extrusion stem secured to the bolster extends rearwardly from the housing and supports an extrusion die at its rear end. The bolster is connected to the block in such a way that the bolster can be moved forward with the block but can move laterally away from the block when they are in their rear position. Shifting means detachably connected with the carrier can slide the bolster and stem laterally away from the block and out beyond one side of the housing, where the carrier can be supported while being disconnected from the shifting means.

Abstract: Fine wire of indefinite length is produced at a high rate and in an economical manner from the surface of a billet, sheet or the like by creating a swelling on the surface of the work and forcing the swelling through a die in a single step.

Abstract: A method and apparatus for recovering and reusing solder following the removal from radiators or the like requiring repair. The solder is melted or otherwise removed from the radiator core, heated, formed into billets, trimmed to remove foreign particles and then placed into a short stroke extruding machine forming the solder into a continuous strand which is coiled and reused. To achieve the maximum stroke with the minimum space the extruding mechanism includes a pivotably mounted ram within a framework adjacent the die chamber and includes as an integral portion thereof a particularly designed trunnion having an elongated hole to receive the bearing and a flat portion whereby the full extrusion force is absorbed by the end plate of the framework without undue stress being placed upon the bearing itself.

Abstract: An improved apparatus for metal extrusion comprises a main container for receiving a billet as a material to be extruded, a press stem with a splitting disc in the front thereof for pushing the billet, a die assembly retaining a die for extruding the product, and a holding means such as a sub-container located between the main container and the die-assembly for retaining extrusion remnant or butt. An improved extrusion method is also disclosed comprising feeding the billet to the rear end of the main container by means of a billet loading means, inserting the billet into the container by means of the stem provided with a detachable disc or undetachable one in the front thereof, extruding the billet through the die by moving the stem toward the die while longitudinally splitting apart billet "shell" or crust produced during the extrusion into a plurality of strips or pieces, and retracting the stem to the original position. Each of the metal extrusion steps are repeated sequentially in the preset order.

Abstract: Aluminum or aluminum alloy scraps or wastes are broken into chips and converted into a cylindrical body to be extruded under a temperature suitable to produce extruded structural profiles. The method is characterized by the fact that the interior of the extruder is evacuated prior to or simultaneously with the extrusion step so as to exhaust air entrapped in the cylindrical body.

Abstract: A method and machine for use in hydrostatic extrusion wherein a portion of an elastic-plastic viscous pressure medium is introduced into the rear portion of a container, with the rear end thereof being sealed in a fluid tight fashion. The pressure medium being of such a nature that it has a high viscosity and cannot flow by itself. Subsequently, a billet is charged into the container and then a die is mounted in the container at the forward end thereof. The aforesaid pressure medium is caused to fill around the outer circumferential surface of the billet. In this respect, a high pressure seal is provided for the junctions between the die and the forward end of the container and between the die and the forward end of the billet before the pressure medium flows out of the container in a practically negligible small amount, immediately after which a pressure stem is pushed into the container from the rear end thereof, thus proceeding with the hydrostatic extrusion.

Abstract: A method of forming a reinforced rubber sheet useful for the lining of pipes, acid tanks, chimneys and the like, wherein a metal grid is interposed between adhesive surfaces of each of two rubber sheets, the rubber sheets overlapping the metal grid along all edges, evacuating the air from between the sheets to thereby draw them together and also to draw them into contact with the metal grid, thereby effecting adhesion between the adhesive surfaces of the two sheets of rubber and also between the rubber sheets and the metal grid.