Abstract: An improved apparatus and method of joining two metallic components prior to making a full seam weld is disclosed. A first inner structural metallic component has at least one neutral zone, an inner surface, an outer surface and an aperture located in the neutral zone. A second outer structural metallic component has at least one neutral zone, an inner surface, an outer surface and a dimple with a raised portion on the inner surface and a recessed portion on the outer surface. The method uses the steps of joining the first and second metallic components so that the first component outer surface and the second component inner surface are directly adjacent each other, and joining the two structural metallic components by forming a full seam weld between the two components.

Abstract: A die assembly for forming a workpiece includes a support clamp, a first clamp that is movable relative to the support clamp to engage a first portion of the workpiece, and a second clamp that is movable relative to the support clamp to engage a second portion of the workpiece. A forming punch is movable relative to the support clamp after the first clamp and the second clamp have been moved to form the workpiece.

Abstract: An apparatus for controlling the movement of a fluid-actuated hydraulic cylinder. A pumping mechanism is provided to pump fluid into the hydraulic cylinder; and a tank receives the fluid expelled from the hydraulic cylinder. A reversing valve between said pumping means and said hydraulic cylinder means controls the flow direction of the fluid into and out of the hydraulic cylinder and a valve mechanism between the pump means and the hydraulic cylinder, and operatively connected to the hydraulic cylinder, controls the fluid flow rate into and out of the cylinder corresponding to the motion of the hydraulic cylinder. One embodiment of the invention is specifically designed to power the main drive gear of an apparatus for stacking battery plates and separators.