Libbey Glass Inc.

David E Crots

Herbert C Kroh

Terry E Hartman

A valve hamper assembly for a glassware machine having a camming surface and a movable follower surface engaging the camming surface. A movable valve is operatively connected to the follower surface. A movement device is operatively connected to the follower surface for moving the follower surface along the camming surface to cause movement of the valve.

Valve hamper assembly

A common cage assembly for a mold for a glassware machine having a mold support member. The assembly further includes a first cage member and a second cage member. Each of the cage members is movably mounted adjacent to the mold support member. Each of the cage members has a mold receiving surface.

Common cage assembly

A cooling system for use with a glassware machine having a plunger, a mold and a valve. The system includes a supply of cooling fluid such as air. The system further includes devices for cooling the plunger, the mold and the valve that are in communication with the supply of fluid.

Cooling system for a glassware machine

The present invention is directed to an apparatus for pressing a glass article. The apparatus includes a frame. A mold having first and second mold halves are mounted on the frame. The mold halves define a cavity for receiving a glass gob. The mold halves are movable between open and closed positions. The apparatus includes a device for opening and closing the mold halves. A plunger is movably mounted on the frame adjacent the cavity. The plunger presses the glass gob into the cavity to form the glass article. The apparatus further includes a device for moving the plunger. An alternative embodiment of the invention is directed to a machine for pressing a plurality of glass articles at a high cavity rate. In this embodiment, the machine includes at least two apparatus as described above mounted on a device for moving the apparatus. The method of the present invention for using apparatus for pressing a plurality of glass articles at a high cavity rate includes the steps of: (a) rotating a carriage to which at least two apparatus as described above are attached; (b) actuating the device for opening and closing the mold to close the mold; (c) placing the glass gob adjacent the cavity; (d) actuating the device for moving the plunger to move the plunger to press the glass gob into the cavity to form the glass article; (e) withdrawing the plunger; (f) actuating the device for opening and closing the mold to open the mold a predetermined distance to cool the mold; and (g) actuating the device for opening and closing the mold to open the mold to remove the glass article from the cavity.

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Ottawa Lake, MI, United States of America

David E Crots