The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 1981
Filed:
Jun. 02, 1980
Earl L May, Irwin, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
Apparatus for engaging the marginal edge portion of a ribbon of molten glass is mounted to the exterior sidewall of a float chamber below the sidewall opening and above the floor level. The vertical arcuate movement of the elongated barrel is controlled by a pair of screw jack assemblies symmetrically positioned on opposite sides of the longitudinal centerline of the barrel, themselves controlled alternatively by a motor or manual driving force. The motor may be back-driven by the manual control to provide both remote and manual fine tune capabilities. The elongated barrel includes an outer tubular member and an inner rotatable tubular drive member which is supported therein by a heat resistant toroidal bushing near its insertable end and by a precision bearing near its drive end.