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An apparatus for the vacuum, countergravity casting of molten metal includes a bottom drag member and a casting mold member thereon engaged together at a parting plane. A valve member is disposed adjacent the parting plane in an ingate to a mold cavity formed at least in part in the casting mold mem

An apparatus for the vacuum, countergravity casting of molten metal includes a bottom drag member and a casting mold member thereon engaged together at a parting plane. A valve member is disposed adjacent the parting plane in an ingate to a mold cavity formed at least in part in the casting mold member and is movable between a valve seat on the bottom drag member and a stop surface on the casting mold member to permit filling of the mold cavity in countergravity manner from an underlying molten metal pool when the bottom drag member is immersed therein and to prevent backflow of the molten metal from the mold cavity when the bottom drag member is withdrawn from the pool after mold filling and before solidification of the molten metal in the mold cavity.

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A casting apparatus for use in the vacuum-induced, countergravity casting of molten metal, comprising: (a) a drag member having a bottom side adapted for immersion in an underlying pool of molten metal and a top side, (b) a casting mold member on the top side of the drag member, said casting mold me

A casting apparatus for use in the vacuum-induced, countergravity casting of molten metal, comprising: (a) a drag member having a bottom side adapted for immersion in an underlying pool of molten metal and a top side, (b) a casting mold member on the top side of the drag member, said casting mold member having a bottom side engaged on the top side of the drag member to form a parting plane therebetween and a mold cavity formed at least in part therein, (c) ingate means disposed between the bottom side of the drag member and the mold cavity for supplying the molten metal to the mold cavity, and (d) valve means disposed in the ingate means adjacent the parting plane and including a valve member movable between the drag member and the casting mold member thereon to permit the molten metal to flow upwardly through the ingate means into the mold cavity when the bottom side of the bottom drag member is immersed in the pool with the mold cavity evacuated and to prevent back flow of the molten metal downwardly from the mold cavity through the ingate means when the bottom side of the bottom drag member is extracted from the pool after filling the mold cavity with the molten metal and before solidification of the molten metal in the mold cavity. A method of vacuum countergravity casting of molten metal, comprising the steps of: (a) relatively moving (1) a casting apparatus having a bottom drag member and a casting mold member disposed thereon and forming a parting plane therebetween, and (2) an underlying molten metal pool to immerse a bottom side of the bottom drag member in the pool, (b) evacuating a mold cavity formed at least in part in said casting mold member when the bottom side of the bottom drag member is immersed in the pool to draw the molten metal upwardly through ingate means disposed between the bottom side and the mold cavity, including moving a valve member disposed in the ingate means adjacent the parting plane between said bottom drag member and said casting mold member thereon in a valve open manner for supplying the molten metal to the mold cavity through the ingate means, and (c) withdrawing the bottom side of the bottom drag member from said pool after the mold cavity is filled with the molten metal and before the molten metal solidifies in the mold cavity, including moving the valve member in the ingate means between said bottom drag member and said casting mold member thereon in a valve closed manner for preventing back flow of the molten metal downwardly from the mold cavity through the ingate means.