Method for simultaneously forming rim and parison

Claim 1

A method of forming a glass parison from a charge of molten glass deposited on the upper surfaces of a pair of cooperatively and horizontally disposed neck ring mold halves and their associated support assemblies in an overlying and surrounding relationship with the orifice embodied in such mold halves and extending vertically therethrough, such method comprising, A. disposing a parison mold against the lower surface of said neck ring mold halves with the center of the orifice defined by such mold halves in vertical alignment with the center of the glass-forming cavity embodied in such parison mold, B. pressing one end of a sleeve member downwardly into said glass charge with the passage through such sleeve member aligned with the center of said orifice and surrounding the portion of the glass charge overlying such orIfice, C. supplying pressurized aeriform fluid to said passage in said sleeve member and thereby to said glass charge to blow part of the glass of such charge through said orifice defined by said neck ring mold halves and into conformity with the shape of such orifice and the shape of the cavity in said parison mold, D. withdrawing said parison mold from contact with the thus far formed glass parison, E. projecting a plunger head, including an annular rimforming channel thereon, through said passage in said sleeve member and into the inner periphery of the part of said glass charge formed by the orifice defined by said neck ring mold halves to form such inner periphery of such part of the glass charge into conformity with the outer periphery of said plunger while said annular channel simultaneously forms a seamless upper rim on the glass parison which is thus formed from the glass charge, and (F) further withdrawing said parison mold from about the lower part of the formed glass parison while simultaneously withdrawing said sleeve member and plunger head from the upper part of such parison to leave the parison suspended in said orifice defined by said neck ring mold halves for transfer of the parison to further glass-forming apparatus.

Claim 2

A method of forming a glass parison from a charge of molten glass deposited on the upper surfaces of a pair of cooperatively and horizontally disposed neck ring mold halves and their associated support assemblies in an overlying and surrounding relationship with the orifice embodied in such mold halves and extending vertically therethrough, such method comprising, A. disposing a parison mold against the lower surface of said neck ring mold halves with the center of the orifice defined by such mold halves in vertical alignment with the center of the glass-forming cavity embodied in such parison mold, B. pressing one end of a sleeve member downwardly into said glass charge with the passage through such sleeve member aligned with the center of said orifice and surrounding the portion of the glass charge overlying such orIfice, C. supplying pressurized aeriform fluid to said passage in said sleeve member and thereby to said glass charge to blow part of the glass of such charge through said orifice defined by said neck ring mold halves and into conformity with the shape of such orifice and the shape of the cavity in said parison mold, D. withdrawing said parison mold from contact with the thus far formed glass parison, E. projecting a plunger head, including an annular rimforming channel thereon, through said passage in said sleeve member and into the inner periphery of the part of said glass charge formed by the orifice defined by said neck ring mold halves to form such inner periphery of such part of the glass charge into conformity with the outer periphery of said plunger while said annular channel simultaneously forms a seamless upper rim on the glass parison which is thus formed from the glass charge, and (F) further withdrawing said parison mold from about the lower part of the formed glass parison while simultaneously withdrawing said sleeve member and plunger head from the upper part of such parison to leave the parison suspended in said orifice defined by said neck ring mold halves for transfer of the parison to further glass-forming apparatus.

Claim 4

A method of preliminarily forming a molten glass charge into a parison in preparation for subsequently forming of such charge into a desired article, such method comprising, A. depositing said glass charge over an orifice embodied in a pair of cooperative and complemental neck ring mold halves and extending vertically therethrough, B. pressing one end of a sleeve member into the glass of said charge where the respective charge surrounds said orifice and so that the hollow in said sleeve member is disposed above said orifice, C. disposing a parison mold below said orifice with the center axis of the forming cavity of such mold in vertical alignment with the center axis of such orifice, D. supplying pressurized aeriform fluid through said hollow in said sleeve member to blow the glass of said charge to form a hollow parison having a neck portion whose outer surface conforms to the configuration of the walls defining said orifice and a body portion whose outer surface conforms to the configuration of the wall defining said cavity, E. withdrawing said parison mold from contact with the thus far formed glass parison while lowering a plunger head within said hollow in said sleeve member and into the glass in said orifice to press form an inner peripheral surface in said neck portion of said parison and a seamless upper rim on such neck portion, and F. completely removing said parison mold and said plunger head from said formed parison to permit transfer of the parison to apparatus for forming thereof into said desired article.

Claim 5

A method of preliminarily forming a molten glass charge into a parison in preparation for subsequently forming of such charge into a desired article, such method comprising, A. depositing said glass charge over an orifice embodied in a pair of cooperative and complemental neck ring mold halves and extending vertically therethrough, B. pressing one end of a sleeve member into the glass of said charge where the respective charge surrounds said orifice and so that the hollow in said sleeve member is disposed above said orifice, C. disposing a parison mold below said orifice with the center axis of the forming cavity of such mold in vertical alignment with the center axis of such orifice, D. supplying pressurized aeriform fluid through said hollow in said sleeve member to blow the glass of said charge to form a hollow parison having a neck portion whose outer surface conforms to the configuration of the walls defining said orifice and a body portion whose outer surface conforms to the configuration of the wall defining said cavity, E. withdrawing said parison mold from contact with the thus far formed glass parison while lowering a plunger head within said hollow in said sleeve member and into the glass in said orifice to press form an inner peripheral surface in said neck portion of said parison and a seamless upper rim on such neck portion, and F. completely removing said parison mold and said plunger head from said formed parison to permit transfer of the parison to apparatus for forming thereof into said desired article.

Claim 6

A method of forming the inner peripheral surface of the neck portion of a thin walled glass container and a seamless rim on the upper end of such neck portion, such method comprising, A. depositing a charge of molten glass on the top surfaces of a pair of separable and complemental neck ring mold halves which are in closed positions to define a circular glass forming orifice, and B. projecting a plunger head, including an annular rim forming channel thereon, into the inner periphery of the part of said glass charge formed by the orifice defined by said neck ring mold halves to form such inner periphery of such part of the glass charge into conformity with the outer periphery of said plunger head and to form simultaneously the upper part of said glass charge into conformity with said annular channel to provide a seamless upper rim on such upper part of the glass charge.

Claim 7

A method of forming the inner peripheral surface of the neck portion of a thin walled glass container and a seamless rim on the upper end of such neck portion, such method comprising, A. depositing a charge of molten glass on the top surfaces of a pair of separable and complemental neck ring mold halves which are in closed positions to define a circular glass forming orifice, and B. projecting a plunger head, including an annular rim forming channel thereon, into the inner periphery of the part of said glass charge formed by the orifice defined by said neck ring mold halves to form such inner periphery of such part of the glass charge into conformity with the outer periphery of said plunger head and to form simultaneously the upper part of said glass charge into conformity with said annular channel to provide a seamless upper rim on such upper part of the glass charge.