Patents Assigned to James A. Jobling & Company Limited
  • Glass tube cutting
    Patent number: 4044936
    Abstract: Apparatus for cutting glass tubing transverse to its length comprises a laser, an optical system for directing the laser along a full circumferential line around the tubing without rotating the tubing and means for forming a point of weakness on the circumferential line so that the stress generated by the laser beam causes the tube to be cut. The optical system includes a mirror located within a tubular casing arranged to be inserted within the glass tubing to be cut.
    Type: Grant
    Filed: May 13, 1975
    Date of Patent: August 30, 1977
    Assignee: James A. Jobling & Company Limited
    Inventors: Derek Obersby, Thomas Kenneth Allen