Forming station for a machine for forming hollow articles of vitreous material
AssigneeHermann Heye
InventorLothar Schaar
Life of this patent
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Abstract
A machine for forming hollow articles of vitreous material includes at least one forming station provided with at least one forming means and for each forming means a neck ring means carrying a parison and including a pair of neck ring halves and a guide ring coaxially carried by the neck ring halves and rotatable relative thereto. The guide ring which engages the parison at its mouth is rotated to thereby impart to the parison a rotary motion relative to the remainder of its forming means which may comprise a split mold to thereby avoid formation of seams or fins on the finished hollow article and to improve the surface quality thereof.
Claims8
A machine for forming a hollow article from vitreous material, said machine comprising:
- at least one forming station having a pair of separable neck ring halves together forming a nonrotatable neck ring adapted to engage a parison, and an integral guide ring supported and rotatably mounted in said neck ring and rotationally fixed to the parison engaged thereby;
- means at said forming station for jointly rotating said guide ring and the parison rotationally fixed thereto relative to said neck ring and thereby making rotation symmetrical the parison rotationally fixed to said guide ring and engaged by said neck ring;
- and
- means at said forming station for preventing rotation of said neck ring jointly with said guide ring during rotation of said guide ring and the parison rotationally fixed thereto.
Dependencies are inferred from the claim text.