Abstract: A device (10) for positioning a glass sheet or other generally rigid planar object (G), having a roller bed table (12) for supporting the object in a horizontal plane and an overhead device (14) carrying a first set of spaced apart arms (26, 28, 30, 32), each of which has a vertically acting cylinder (70) near a free end thereof, and a second set of spaced apart arms (20, 22, 24) near a free end thereof, each of which has a horizontally acting cylinder (48) near the free end thereof. Each vertically acting cylinder has a sheet edge contacting element (74) at the free end of its cylinder rod (72), and these edge contacting elements act as fixed stops during the positioning of the object. Each horizontally acting cylinder has a sheet edge contacting element (52) of the free end of its cylinder rod (50), and these edge contacting elements act as movable stops during the positioning of the object.

Abstract: A glass drilling machine for drilling holes in a sheet of glass in which each hole is partly drilled from one side of the sheet and is then finish drilled from the opposite side. The machine is made up of aligned first and second drilling devices which are attached near the ends of first and second pivotable arms, respectively, the first and second arms being periodically pivoted toward and away from the sheet to bring the drilling devices into and out of drilling engagement with the sheet. The first and second arms are releasably clamped to first and second spindles, respectively, which pivot about first and second axes, respectively, the first and second axes being spaced apart but close to one another and positioned remote from the drilling devices. The position of the first arm is adjustable along its longitudinal axis and the position of the second arm is adjustable along the axis of the second spindle.

Abstract: A glass drilling machine for drilling holes in a sheet of glass in which each hole is partly drilled from one side of the sheet and is then finish drilled from the opposite side. The machine is made up of aligned first and second drilling devices which are attached near the ends of first and second pivotable arms, respectively, the first and second arms being periodically pivoted toward and away from the sheet to bring the drilling devices into and out of drilling engagement with the sheet. The first and second arms are releasably clamped to first and second spindles, respectively, which pivot about first and second axes, respectively, the first and second axes being spaced apart but close to one another and positioned remote from the drilling devices.