Vacuum casting

Claim 1

A METHOD OF CASTING A MELT STOCK MATERIAL IN A MOLD OPEN AT ITS TOP TO HOLD A POOL OF MOLTEN MATERIAL, AND BEING LOCATED IN A CHAMBER, THE METHOD COMPRISING DISPOSING A RIGID MELT STOCK OVER THE MOLD IN CLOSE PROXIMITY TO THE TOP THEREOF TO LEAVE A VERTICAL SPACE BETWEEN THE MELT STOCK AND THE POOL OF MOLTEN MATERIAL IN THE MOLD, GENREATING AN ELECTRON BEAM IN THE CHAMBER AT A LOCATION REMOTE AND UPWARDLY DISPLACED FROM SAID VERTICAL SPACE, ACCELERATING THE BEAM AT SAID LOCATION INDEPENDENTLY OF THE MOLD AND THE MELT STOCK, DIRECTING THE BEAM AT AN ANGLE TO THE VERTICAL AND INTO THE OPEN TOP OF THE MOLD SO A PORTION OF THE BEAM TRAVERSES THE VERTICAL SPACE BETWEEN THE MELT STOCK AND UPER END OF THE MOLD FROM ONE SIDE OF THE MOLD TO THE OPPOSITE SIDE OF THE MOLD AND MAINTAINS THE MOLTEN POOL OF MATERIAL IN THE UPPER PORTION OF THE MOLD, ADVANCIN THE MELT STOCK INTO THE BEAM AT A RATE SO A PORTION OF THE BEAM STRIKES AND MELTS THE MELT STOCK ALONG AINCLINED SURFACE TO LIBERATE GAS AND CAUSE MOLTEN MATERIAL TO DRIP FROM A LOWER EDGE OF THE INCLINED SURFACE OF THE MELT STOCK MAINTAINED ABOVE THE MOLD AND FALL FREELY THROUG THE SAID VERTICAL SPACE INTO THE MOLTEN POOL IN THE TOP OF THE MOLD, AND SO A PORTION OF THE BEAM CONTINUES TO TRAVERSE THE VERTICAL SPACE AND HEAT FALLING MOLTEN MATERIAL TO AID IN THE ADDITIONAL LIBERATION OF GAS AND PREVENT MECHANICAL BRIDGING BETWEEN THE MELT STOCK AND THE UPPER END OF TH E MOLD, AND SIMULTANEOUSLY EVACUATIN GTHE CAMBER TO REMOVE GAS LIBERATED FROM THE HEATED MELT STOCK.

Claim 2

A METHOD OF CASTING A MELT STOCK MATERIAL IN A MOLD OPEN AT ITS TOP TO HOLD A POOL OF MOLTEN MATERIAL, AND BEING LOCATED IN A CHAMBER, THE METHOD COMPRISING DISPOSING A RIGID MELT STOCK OVER THE MOLD IN CLOSE PROXIMITY TO THE TOP THEREOF TO LEAVE A VERTICAL SPACE BETWEEN THE MELT STOCK AND THE POOL OF MOLTEN MATERIAL IN THE MOLD, GENREATING AN ELECTRON BEAM IN THE CHAMBER AT A LOCATION REMOTE AND UPWARDLY DISPLACED FROM SAID VERTICAL SPACE, ACCELERATING THE BEAM AT SAID LOCATION INDEPENDENTLY OF THE MOLD AND THE MELT STOCK, DIRECTING THE BEAM AT AN ANGLE TO THE VERTICAL AND INTO THE OPEN TOP OF THE MOLD SO A PORTION OF THE BEAM TRAVERSES THE VERTICAL SPACE BETWEEN THE MELT STOCK AND UPER END OF THE MOLD FROM ONE SIDE OF THE MOLD TO THE OPPOSITE SIDE OF THE MOLD AND MAINTAINS THE MOLTEN POOL OF MATERIAL IN THE UPPER PORTION OF THE MOLD, ADVANCIN THE MELT STOCK INTO THE BEAM AT A RATE SO A PORTION OF THE BEAM STRIKES AND MELTS THE MELT STOCK ALONG AINCLINED SURFACE TO LIBERATE GAS AND CAUSE MOLTEN MATERIAL TO DRIP FROM A LOWER EDGE OF THE INCLINED SURFACE OF THE MELT STOCK MAINTAINED ABOVE THE MOLD AND FALL FREELY THROUG THE SAID VERTICAL SPACE INTO THE MOLTEN POOL IN THE TOP OF THE MOLD, AND SO A PORTION OF THE BEAM CONTINUES TO TRAVERSE THE VERTICAL SPACE AND HEAT FALLING MOLTEN MATERIAL TO AID IN THE ADDITIONAL LIBERATION OF GAS AND PREVENT MECHANICAL BRIDGING BETWEEN THE MELT STOCK AND THE UPPER END OF TH E MOLD, AND SIMULTANEOUSLY EVACUATIN GTHE CAMBER TO REMOVE GAS LIBERATED FROM THE HEATED MELT STOCK.