Abstract: Apparatus and method for injecting molten lead from a reservoir into a die mold cavity formed about an aperture in the wall of a plastic battery for casting lead-alloy battery terminal connectors. Batteries are positioned adjacent the molten lead reservoir of the apparatus and mold portions move together to hold the battery containers in a clamp-like action. Molten lead is die cast under pressure into the mold cavity in which a stainless steel threaded nut is positioned. The lead is forced through a heated chamber into a portion of the mold which may be water cooled. The mold is designed to allow venting of gases, thereby eliminating porosity; and the apparatus is designed to provide casting which is free of jagged projections in the sprue hole.

Abstract: Method for injecting molten lead from a reservoir into a die mold cavity formed about an aperture in the wall of a plastic battery for casting lead-alloy battery terminal connectors. Batteries are positioned adjacent the molten lead reservoir of the apparatus and mold portions move together to hold the battery containers in a clamp-like action. Molten lead is die cast under pressure into the mold cavity in which a stainless steel threaded nut is positioned. The lead is forced through a heated chamber into a portion of the mold which may be water cooled. The mold is designed to allow venting of gases, thereby eliminating porosity; and the apparatus is designed to provide casting which is free of jagged projections in the sprue hole. The aperture in the battery wall is surrounded by a series of plastic annular rings extending outward from the battery wall but being a part thereof. The molten lead surrounds the annular rings and fills the spaces therebetween when it is injected into the cavity.

Abstract: Apparatus for injecting molten lead from a reservoir into a die mold cavity formed about an aperture in the wall of a plastic battery for casting lead-alloy battery terminal connectors. Batteries are positioned adjacent the molten lead reservoir of the apparatus and mold portions move together to hold the battery containers in a clamp-like action. Molten lead is die cast under pressure into the mold cavity in which a stainless steel threaded nut is positioned. The lead is forced through a heated chamber into a portion of the mold which may be water cooled. The mold is designed to allow venting of gases, thereby eliminating porosity; and the apparatus is designed to provide casting which is free of jagged projections in the sprue hole. The aperture in the battery wall is surrounded by a series of plastic annular rings extending outward from the battery wall but being a part thereof. The molten lead surrounds the annular rings and fills the spaces therebetween when it is injected into the cavity.