GB112007A - Improvements in Glass Shaping and Blowing Machines. - Google Patents

Abstract

112,007. Roirant, E. Dec. 14, 1916, [Convention date]. Blowing.-Relates to blowing- machines of the type in which the molten metal is sucked upwards into the pressure mould. The parison and finishing moulds of a blowing-machine are hinged on separate and fixed axis and have opening and closing movements only, and the opening or closing movement of the parison mould and the closing or opening movement of the finishing-mould commence and finish at the same time. The halves 21 of the parison-mould carrier are hinged to one of the hollow columns 2 of the machine; and the halyes 22 of the finishing-mould carrier are hinged to the other column. The moulds are mounted at the same level and are coupled by adjustable members 28, 24 to the lower ends of pivoted levers 16, 17 which are operated by rods 18, 20 from an eccentric pin 19 on a disk 4 on the driving.shaft 4. The carrier 13 of the bottom mould 14 is moved up and down on the columns 2 by a rod 15 connected tu a sprocket-wheel 10 which is contained within the hollow base 1 of the machine and driven by a chain 12 passing through the columns 2 from a wheel 7 on the shaft 4. The bipartite neck mould 25 is carried by slides 26 mounted in a carrier 27 loosely seated on the lower parts of the casting 3. Cams 34 on disks 6, 9 on the shaft 4 engage rollers 32 on the upper ends of levers 30, 31 pivoted to the carrier 27 and move the parts of the neck mould 25 apart against the action of springs 33. An eccentric 8 on the shaft 4 actuates the plunger 35. The carrier 27 is connected by pipes 43, 42 to chests 38, 39 which communicate by pipes 40, 41 with sources of vacuum and compressed air respectively, and the valves in the chests are opened sequentially by a cam 46 on the disk 6 to draw molten metal from the receptacle 47 into the parison mould 28 and to blow the parison in the finishing-mould 29.