Production of one-piece stemware from glass, etc.
AssigneeGlass Tubes and Components Limited
InventorsDavid Harold Inns, william Roy Bennett, Arnold Chambers
Life of this patent
Estimating the term…
Abstract
Glass or like stemware is manufactured in one piece by part-forming an article having a glob of material in the position where the stem is required, placing the glob between rollers which have a shape defining the required shape of the stem, and rotating the glob between the rollers while advancing the rollers inwardly. Subsequently a foot forming member is axially advanced towards the glob to apply pressure against the glob to form a radially-extending foot.
Claims7
A method of manufacturing a stemmed article, such as a drinking vessel or vase, from a viscous settable material, such as glass, comprising the steps of:
- a. providing a part-formed article having a glob of at least semi-molten material in the position where the stem is required;
- b. supporting said part-formed article vertically for rotation about its longitudinal axis with said glob lowermost;
- c. rotating said article about its longitudinal axis while simultaneously rolling the circumferential surface of the glob in a vertical plane with rollers the surfaces of which conform to the desired shape of the finished article;
- d. reducing the distance between the rollers to form the stem of the desired shape and configuration without stretching;
- and
- e. advancing a foot-forming member towards the glob and applying pressure thereagainst to form a radially extending foot on said stem.
Dependencies are inferred from the claim text.