Improvements in or relating to the cutting of a continuous ribbon of glass or other material

摘要

In a glass cutting machine in which glass ribbon is automatically scanned for faults and a cutting plan is determined in accordance with these and with the customer's requirements, the computing is done from a fixed base and a measurement relative to the ribbon edge is derived, the scoring tool being set relative to the edge of the ribbon in accordance with this measurement in order to allow for lateral shift of the ribbon between the points of measurement and scoring. The faults may be detected photo-electrically and the measured position of the edge of the ribbon may be detected in like manner or by displacement of a pneumatic piston. The actual position of the edge at the scoring station may be used to close successive switches arranged to drive a motor to move the scoring tool laterally if the ribbon shifts laterally.