Abstract: An electrical caulking method for a work made from a magnesium or a magnesium alloy wherein a caulking pin integrally projects from a body, wherein an electric caulking apparatus having two opposing electrodes is used. The work is held between the opposing electrodes so that one electrode contacts the caulking pin and the other electrode contacts the body while an electric current is applied between the electrodes and pressure is exerted therebetween, thereby caulking the caulking pin into a desired shape, and providing at least the one electrode that is brought into contact with the caulking pin of the work of a material having low thermal diffusivity and which is difficult to alloy with magnesium.

Abstract: A machine for setting eyelets and the like in printed circuit boards includes a generally U-shaped frame having a pair of spaced-apart support arms defining a workpiece receiving zone therebetween, a first tool movably mounted in one of the support arms, and a second tool fixedly mounted in the other support arm and axially aligned with the first tool. An adjustable torque screw is connected to the first tool for moving the first tool into aligned contact with the second tool at a pre-determined eyelet setting pressure. The adjustable torque screw insures that the eyelet setting pressure does not exceed the pre-determined eyelet setting pressure despite continued rotation of the adjustable torque screw.

Abstract: A portable machine is disclosed for setting eyelets and the like in printed circuit boards and includes an upper tool connected to a mandrel mounted in a frame and movable into and out of engagement with a lower tool by a toggle means. The lower tool is resiliently mounted in the frame beneath the upper tool and has a support structure beneath it which includes a slidable pressure control means for predetermining the maximum setting pressure applied to a workpiece by the upper and lower tools.

Abstract: A device including a brake lining or the like friction lining, such as a brake shoe, which device is more economical and simpler to produce and avoids squealing due to loosening and separation of the lining relative to its support. The brake lining device of the present invention includes a rigid metal support, a lining of friction material provided with apertures therethrough; these apertures form a narrower inner portion and a wider outer portion, a cap, of metal, having a cup-shape and a flat annular flange, is engaged in each aperture with the flange in abutment against the shoulder portion defined between these outer and inner aperture portions, and having its closed end axially tensioned away from the flange and electrically welded against the metal support.

Abstract: A fushed eyeletting machine which constitutes an improvement over the structure disclosed by U.S. Pat. No. 3,739,141, the improvement features being in the upper setting tool mount structure.The upper arm of the C-shaped frame terminates in a pair of spaced apart tool support fingers, and a double stop toggle mechanism is mounted between the fingers, joined to a mandrel portion of the upper tool at a location thereon between the fingers.The electrical connection to the upper tool is adjacent the tool top and above the fingers.