Abstract: A device for supporting a circular disc to be cemented in an opening in a rigid plate-like member, such as a pane of plate glass, comprises a support frame, a first set of legs around the perimeter of said frame, and a second set of legs spaced inwardly from said first set of legs. All of said legs are terminated along the same plane spaced from the frame member. A support element has a suction cup to hold a rigid plug having a diameter less than the area circumscribed by the first legs, and greater than the area circumscribed by the second legs. A spring resiliently urges the plug against the ends of the second legs so that a surface of the plug lies in said plane. The frame is held against the pane or plate like member so that one surface of the plate member also lies in said plane and the plug can be held in the hole with one surface exactly parallel in a plane coincident with the plane of the plate.

Abstract: An apparatus for repairing windshields and the method for using the apparatus wherein a liquid, curable resin material is forced into cracks in the windshield, using an apparatus mounted directly to the windshield, and which provides a high injection pressure and subsequently a vacuum so that the crack is completely filled, and air bubbles are removed from the filling resin during the time the resin cures. The apparatus in one form includes a disposable, simple-to-make injector that seals positively around the opening of the crack so that the resin is forced into place, and by reversing the injector, a suitable vacuum can be applied to the injected resin for removal of air bubbles.