Patent GB-405181-A (GB)
Title: Apparatus for handling and trimming glass sheets in sheet drawing apparatus
IPC: C03B33/02
Filed: 1933-06-21
Abstract: 405,181. Glass manufacture. NAAMLOOZE VENNOOTSCHAP HOLLANDSCHE MAATSCHAPPIJ VOOR DE VERVAARDIGING VAN GLAS, 104, Weteringschans, Amsterdam.-(Assignees of Redshaw, J. H.; Woodlayn Avenue, Homestead Park, Pennsylvania, U.S.A.) June 21, 1933, No. 17683. Convention date, June 29, 1932. [Class 56.] Relates to the apparatus described in Specification 400,110 for cutting-off and handling sections of a continuous strip of glass as it emerges from the leer of a drawing-apparatus of the vertical type. According to the present invention, means are provided for trimming-off the edges of the glass sheets. The apparatus comprises a trolley 2, Figs. 1 and 2, running on an overhead track 1a and supporting a conveyer frame 3 made up of pipe sections with a second frame provided with vacuum cups 16 for removing the glass sheet 1 as described in the earlier Specification. A motor 20 is provided for raising and lowering the frame 3. The edge-trimming or severing devices are supported at each side of the vacuum frame and preferably consist of electrically-heated wires or ribbons 28, 29, Figs. 1 and 5, arranged in pairs. The ribbons 28, 29 are carried by vertical members 32, 33, respectively, each of the members 33 being mounted on a pair of arms 36 which pivot on a vertical shaft 37 carried by brackets 47. The members 32 are each mounted on a pair of arms 38 which are also pivoted on the shaft 37, and these arms have a limited amount of vertical movement in order that the ribbons 28 may be raised out of the way of the device for cutting the glass strip transversely. Springs 44 press the ribbons 28 resiliently into contact with the glass sheet 1. Both pairs of ribbons 28, 29 can be moved transversely in the supporting frame by means of screws 49 operated by cranks 54 through spiral gears 51. This arrangement enables the position of the heating ribbons to be adjusted to suit glass strips of various widths. The ribbons 29 are normally held in contact with the glass sheet by means of springs, but they can be swung to one side by means of handles 55 when positioning the apparatus or when discharging a glass sheet. The brackets 47 are also mounted in bearing blocks 48, Fig. 5, and the vacuum frame can be tilted about an horizontal axis by means of levers 60, Fig. 1, in order to incline the heating-ribbons until they are parallel with the glass strip when they are to be applied to the glass. A frame 63 is used for supporting the glass sheet when the vacuum cups 16 are pressed into contact withit. The frame 63 is mounted on wheels 65, and is adjustable about the front wheels in order to tilt it into parallelism with the glass sheet. In use, the vacuum cups 16 are applied to the glass and lifting force is exerted by the motor, as described in the earlier Specification. The glass strip is then severed transversely by any suitable device, and the heating- ribbons 28, 29 are moved into contact with the edges of the glass. After the glass has been heated, and the edges cracked by the application of a cold tool, the device is moved to a rack or frame on which the glass sheet is to be placed.