Abstract: An apparatus and method for pressure casting a battery part wherein an extendible piston includes sidewalls for shutting off the supply of molten lead and an impact surface that extends in a side-to-side condition to form an end surface of a battery part cavity so that when the extendible piston is brought into an intensifying condition the extendible piston shuts off further supply of molten metal while a heat source maintains the lead in a molten state as the impact surface of the piston forms a side-to-side mold cavity surface to complete the mold cavity surface thereby eliminating unevenness in the surface of the finished battery part by generating a force with the extendible piston which is sufficient to form a battery part so that upon removal from the mold the batter part is substantially free of tears and cracks as well as surface irregularities.

Abstract: An apparatus and method for pressure casting a battery part wherein an extendible piston includes sidewalls for shutting off the supply of molten lead and an impact surface that extends in a side-to-side condition to form an end surface of a battery part cavity so that when the extendible piston is brought into an intensifying condition the extendible piston shuts off further supply of molten metal while a heat source maintains the lead in a molten state as the impact surface of the piston forms a side-to-side mold cavity surface to complete the mold cavity surface thereby eliminating unevenness in the surface of the finished battery part by generating a force with the extendible piston which is sufficient to form a battery part so that upon removal from the mold the batter part is substantially free of tears and cracks as well as surface irregularities.

Abstract: An apparatus and method for pressure casting a battery part wherein at least one of the mold members forming the surfaces of an internal battery part cavity are displaced with respect to one another to reduce the volume of the mold cavity formed between the two parts to thereby intensify the pressure sufficiently high pressure so as to inhibit the formation of cracks and tears in a cast part.

Abstract: A closed system and method that includes a source of pressurizeable molten lead connected to a mold having a mold cavity therein with the mold maintainable at sufficiently low temperature so that a charge of molten lead located in the mold cavity solidifies to thereby form a solidified casting in the mold cavity. A housing having a runner, is maintainable at sufficiently high temperature to maintain the molten lead in a molten state so that the mold cavity can be refilled with a fresh charge molten lead when a solidified casting is removed therefrom without introducing air to the closed system. A shut-off valve, having an open position to allow a charge of molten lead to flow into the mold cavity and a closed position to prevent molten lead from flowing out of the runner as the molten lead in mold cavity solidifies with the shut-off valve configurable to intensify the pressure of the lead in the mold cavity.

Abstract: The present invention is directed to a one piece sinker reversibly attachable to a fishing line. The sinker is a streamlined, truncated cone shape having a line accepting passage along the center line thereof. The sinker includes line centering surfaces to prevent line twist as the sinker is drawn though water, and a elongated thumb slot for inserting a tool having a length longer than the sinker to allow a user to manually opening the sinker. Also disclosed is a method of making the sinker employing a unique core blade punch for forming the line accepting passage with the sinker jaws having discontinuous but mateable line engaging surfaces.

Abstract: A closed system and method that includes a source of pressurizeable molten lead connected to a mold having a mold cavity therein with the mold maintainable at sufficiently low temperature so that a charge of molten lead located in the mold cavity solidifies to thereby form a solidified casting in the mold cavity. A housing having a runner, is maintainable at sufficiently high temperature to maintain the molten lead in a molten state so that the mold cavity can be refilled with a fresh charge molten lead when a solidified casting is removed therefrom without introducing air to the closed system. A shut-off valve, having an open position to allow a charge of molten lead to flow into the mold cavity and a closed position to prevent molten lead from flowing out of the runner as the molten lead in mold cavity solidifies with the shut-off valve configurable to intensify the pressure of the lead in the mold cavity.

Abstract: An expandable mold for use with metals that expand during solidification with the expandable mold having sidewalls that are forcibly laterally separated to thereby expand the mold cavity sufficiently so as to free at least one portion of the cast article from an interference fit with a first portion of the mold to thereby enable removable of the cast article from an interference fit with a further portion of the mold without fracture of the cast article and for forming a smooth surface finish on the cast article.

Abstract: An apparatus and method for pressure casting a plurality of battery terminal wherein the molten lead is prevented from entering the mold cavities until molten lead is present by the inlets of all the mold cavities with the inlets to the molds simultaneously opened to allow molten lead therein and simultaneously closed with the volume of each of the mold cavities in each of the mold cavities is quickly reduced to thereby cause the molten lead solidifies under the reduced volume and high pressure produces a battery terminal that is substantially free of both tears and cracks.

Abstract: An apparatus and method for pressure casting a battery part wherein the state of molten lead is monitored so that when the molten lead enters a liquid-to-solid transformation stage, the volume of the mold available for the lead to solidify therein is quickly reduced through a volume contraction step to thereby cause the molten lead to flow into the remaining volume at the same time one maintains pressure on the molten lead. As the molten lead solidifies under the reduced volume and high pressure it produces a battery part that is substantially free of both tears and cracks. In an alternate method, the lead is allowed to solidify and at least a portion of the lead is mechanically deformed through a volume contraction step to cause cracks or tears in the battery part to be eliminated thereby providing a battery part free of cracks or tears.

Abstract: The present invention is directed to a one piece sinker reversibly attachable to a fishing line. The sinker is a streamlined, truncated cone shape having a line accepting passage along the center line thereof. The sinker includes line centering surfaces to prevent line twist as the sinker is drawn though water, and a elongated thumb slot for inserting a tool having a length longer than the sinker to allow a user to manually opening the sinker. Also disclosed is a method of making the sinker employing a unique core blade punch for forming the line accepting passage with the sinker jaws having discontinuous but mateable line engaging surfaces.

Abstract: An apparatus and method for pressure casting a battery part wherein the state of molten lead is monitored so that when the molten lead enters a liquid-to-solid transformation stage, the volume of the mold available for the lead to solidify therein is quickly reduced through a volume contraction step to thereby cause the molten lead to flow into the remaining volume at the same time one maintains pressure on the molten lead. As the molten lead solidifies under the reduced volume and high pressure it produces a battery part that is substantially free of both tears and cracks. In an alternate method, the lead is allowed to solidify and at least a portion of the lead is mechanically deformed through a volume contraction step to cause cracks or tears in the battery part to be eliminated thereby providing a battery part free of cracks or tears.

Abstract: The present invention is directed to a one piece sinker reversibly attachable to a fishing line. The sinker is a streamlined, truncated cone shape having a line accepting passage along the center line thereof. The sinker includes line centering surfaces to prevent line twist as the sinker is drawn though water, and a elongated thumb slot for inserting a tool having a length longer than the sinker to allow a user to manually opening the sinker. Also disclosed is a method of making the sinker employing a unique core blade punch for forming the line accepting passage with the sinker jaws having discontinuous but mateable line engaging surfaces.

Abstract: A closed system and method that includes a source of pressurizeable molten lead connected to a mold having a mold cavity therein with the mold maintainable at sufficiently low temperature so that a charge of molten lead located in the mold cavity solidifies to thereby form a solidified casting in the mold cavity. A housing having a runner, is maintainable at sufficiently high temperature to maintain the molten lead in a molten state so that the mold cavity can be refilled with a fresh charge molten lead when a solidified casting is removed therefrom without introducing air to the closed system. A shut-off valve, having an open position to allow a charge of molten lead to flow into the mold cavity and a closed position to prevent molten lead from flowing out of the runner as the molten lead in mold cavity solidifies with the shut-off valve configurable to intensify the pressure of the lead in the mold cavity.

Abstract: An apparatus and method for pressure casting a battery part wherein the state of molten lead is monitored so that when the molten lead enters a liquid-to-solid transformation stage, the volume of the mold available for the lead to solidify therein is quickly reduced through a volume contraction step to thereby cause the molten lead to flow into the remaining volume at the same time one maintains pressure on the molten lead. As the molten lead solidifies under the reduced volume and high pressure it produces a battery part that is substantially free of both tears and cracks. In an alternate method, the lead is allowed to solidify and at least a portion of the lead is mechanically deformed through a volume contraction step to cause cracks or tears in the battery part to be eliminated thereby providing a battery part free of cracks or tears.

Abstract: A closed system and method that includes a source of pressurizeable molten lead connected to a mold having a mold cavity therein with the mold maintainable at sufficiently low temperature so that a charge of molten lead located in the mold cavity solidifies to thereby form a solidified casting in the mold cavity. A housing having a runner, is maintainable at sufficiently high temperature to maintain the molten lead in a molten state so that the mold cavity can be refilled with a fresh charge molten lead when a solidified casting is removed therefrom without introducing air to the closed system. A shut-off valve, having an open position to allow a charge of molten lead to flow into the mold cavity and a closed position to prevent molten lead from flowing out of the runner as the molten lead in mold cavity solidifies with the shut-off valve configurable to intensify the pressure of the lead in the mold cavity.

Abstract: An apparatus and method for pressure casting a battery part wherein the state of molten lead is monitored so that when the molten lead enters a liquid-to-solid transformation stage, the volume of the mold available for the lead to solidify therein is quickly reduced through a volume contraction step to thereby cause the molten lead to flow into the remaining volume at the same time one maintains pressure on the molten lead. As the molten lead solidifies under the reduced volume and high pressure it produces a battery part that is substantially free of both tears and cracks. In an alternate method, the lead is allowed to solidify and at least a portion of the lead is mechanically deformed through a volume contraction step to cause cracks or tears in the battery part to be eliminated thereby providing a battery part free of cracks or tears.

Abstract: A method and apparatus for converting a finished battery terminal suitable for a first application into a battery terminal suitable for a second application in one operation that does not require reforming of the finished battery terminals by picking the finished battery terminal suitable for a first application from a delivery rack and delivering the finished battery terminal suitable for a first application to a depth stand that includes a cutter which removes a portion of the finished battery terminal suitable for a first application while the depth stand limits the portion removed to thereby form a finished battery terminal suitable for a second application from the battery terminal suitable for a first application and then deliver the finished battery terminal suitable for a second application for shipment to a customer without requirement of further processing.

Abstract: The apparatus which pushes or elevates molten material into a mold cavity. The apparatus further includes a reservoir and a shuttle for transferring the molten material from a reservoir. The shuttle and reservoir assembly permits molten material to be elevated upwardly into the shuttle from the beneath the surface of the molten material to minimize or eliminate pouring and thus turbulence and pores in the final product. The final product is free of cracks and laminations, and is smooth and nonporous.

Abstract: A cold-forming method of making a finished battery terminal with a necked down flange by first expanding the metal radially outward until the battery terminal die cavity is partially filled with metal and then upsetting the metal to complete the deformation filling of the battery, terminal die cavity and to simultaneously form a necked down region in the flange on the battery terminal.