Abstract: A glass vessel crusher including an external cylinder 1 and an internal cylinder disposed in the external cylinder, a glass-vessel crushing space A of ring shape in section being defined by the inner wall of the external cylinder 45 and the outer wall of the internal cylinder. At least one of the external cylinder and the internal cylinder is freely rotatable and is so designed that the glass-vessel crushing space is gradually narrowed along a direction from a glass-vessel throw-in side toward a fragment discharge side, and at least one of the inner wall of the external cylinder and the outer wall of the internal cylinder is provided with a spiral projection 57 extending into the ring-shaped glass-vessel crushing space.

Abstract: A glass gob cutting device in a gob feeder for cutting a gob of molten glass supplied from an orifice of a furnace and supplying the cut gob of molten glass to a glass forming machine. The glass gob cutting device includes a pair of shearing blades for cutting a gob of molten glass to make the cut gob of molten glass, a pair of supporting arms for supporting the pair of shearing blades, a shearing mechanism connected to the supporting arms for actuating the supporting arms, a guide arm being actuated by actuating means different from the shearing mechanism and a guide provided on a free end of the guide arm for guiding the cut gob of molten glass and introducing the same into the glass forming machine.