Ppg Industries, Inc.

Robert M Bonaddio

John R Dahlberg

Yu Jiao

Chao Yu

Joseph Medzius

A spacing conveyor section includes a plurality of shafts each having a spring mounted thereon and a plurality of spaced donut rolls mounted on the spring. Glass sections having their leading edges transverse to the sheet movement path and generally aligned with one another are advanced onto the spacing rolls. Thereafter the springs are stretched to increase the distance between sides of adjacent sections. The sections are then advanced along the spacing conveyor section into downstream work positions.

Method of and apparatus for sideward displacement of sheets

A glass ribbon advances through a first scoring station where a conventional score is imposed in the ribbon to provide a zone of damage to initiate a subsurface score and thereafter through a second scoring station where the subsurface score is imposed in the ribbon.

Method of and apparatus for initiating a damage-free score in a

A device for applying a constant force to a glass scoring wheel includes a pivotally mounted L-shaped lever arm having the scoring wheel rotatably mounted at one end of the horizontal member and an adjustable vertical member. A constant force coil spring biases the vertical member to pivot the horizontal member in a direction to urge the scoring wheel at a constant predetermined force against the glass sheet. The constant predetermined force acting on the scoring wheel is a function of the height of the vertical arm.

Force applying device for scoring wheels

A row of spacer blocks double as spacing means and scoring wheel holders so that a plurality of parallel score lines may be placed on a sheet of glass with a high degree of precision in the spacing of the score lines.

Apparatus for precise subdivision of glass sheets

When subdividing sheets of glass, cutting defects near the edge of the sheet are reduced by initiating scoring action at the very edge of the sheet with a scoring wheel which is rolling and under scoring pressure as it contacts the edge. This is accomplished by providing under the scoring wheel a platform whose upper surface is substantially coplanar with or tangential to the upper surface of the glass, so that the scoring wheel rolls off the platform directly onto the glass surface.

Growing community of inventors

Monroeville, PA, United States of America

Robert M Bonaddio