Radiation sensitive apparatus for severing glass along a score mark

Claim 1

APPARATUS FOR SEVERING A MOVING SHEET OF GLASS ALONG A SCORE MARK ON A SURFACE OF THE GLASS WHICH SCORE MARK WILL SCATTER LIGHT RAYS AND EXTEND TRANSVERSELY OF THE DIRECTION OF MOVEMENT OF THE SHEET, COMPRISING: MEANS TO SUPPORT AND CONVEY THE SHEETS ALONG A PREDETERMINED PATH; A SNAPPING MEANS, INCLUDING A HORIZONTALLY DISPOSED SNAPPING ROLL ACROSS SAID PATH, AND VERTICALLY MOVABLE WITH RESPECT TO THE PATH OF THE GLASS SHEET FOR SEVERING THE SHEET ALONG SAID SCORE LINE; A LIGHT SOURCE, MEANS TO DIRECT A BEAM OF LIGHT FROM SAID SOURCE ONTO THE SCORED SURFACE OF THE GLASS SHEET, SAID LIGHT BEAM INTERSECTING THE SCORE MARK WHEN LOCATED ESSENTIALLY DIRECTLY ABOVE THE AXIS OF THE SNAPPING ROLL; A LENS HOLDER POSITIONED ABOVE SAID SNAP ROLL AND IN A SPACED RELATIONSHIP WITH SAID GLASS; AN OBJECTIVE LENS POSITIONED WITHIN SAID HOLDER; AN APERTURED CAP CLOSING OFF ONE END OF SAID CYLINDRICAL LENS HOLDER; A PHOTOCELL MOUNTER OVER SAID APERTURE CAP, SAID PHOTOCELL RESPONSIVE TO CHANGES IN INTENSITY OF SAID LIGHT BEAM WHEN SAID LIGHT BEAM INTERSECTS SAID SCORE LINE; MEANS OPERABLE IN RESPONSE TO THE SENSING OF THE INTERSECTION OF THE BEAM WITH A SCORE MARK TO ACTUATE THE SNAPPING ROLL SO AS TO SEVER THE SHEET ALONG THE INTERSECTED SCORE LINE.