(under subclass 269) Apparatus including means to heat a surface layer of a preform to a molten condition whereby surface tension and/or gravity eliminates defects thereon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
65, for a process of forming an article from molten glass followed by fire-polishing.
104, for a process of reshaping combined with fire-polishing a preform.
120, for a process of treating a preform by flame only.
227+, for diverse glass working including fire-polishing.
252, for plural distinct fire-polishing means in a single apparatus.
