Abstract: A device for treating glassware and crystalware articles driven in rotation about an axis of rotation, which includes a mandrel upon which the articles is rotatably mounted. The device includes one of a heating source and a cooling source movable along a direction parallel to the treatment plane, and a data recording system having a control unit for storing and handling the data measured by a sensor relating to the angular position of each glassware or crystalware article. An intersection sensor is included to measure the distance between the external wall of each article and the heating mechanism. Further, a command unit controls the displacement and the location of the one movable heating and cooling source during treatment of the rotating article so as that a substantially constant spacing between the heating mechanism and the rotating articles is maintained.

Abstract: The method employing abrasive tools for the combined cutting and trimming of glass or crystal articles is carried out while the article (47) is maintained substantially vertical and while the moil (48) constitutes the bottom part of the glass or crystal mass constituting the article (47) to be machined. During cutting, two abrasive discs (10) substantially simultaneously penetrate the article (47) which is to be cut, at substantially opposite locations and in accordance with a substantially opposing directions of approach. Mounted on the same arbor (13) are a cutting disc (10) and a finishing grinder (11) so that the cutting and finishing or trimming operations are performed at the same work station. Mechanisms comprising the elements (37, 39, 40, 21, 25, 26, 27, 28, 29, 33, 34, 35, 36) permit of rapid and easily modulable adaptation of the apparatus between the cutting and finishing operations.