Take-out tong assembly
AssigneeOwens-Illinois, Inc.
InventorJack I. Perry
Life of this patent
Estimating the term…
Abstract
Apparatus for taking newly formed glass containers from a blow mold and transferring the containers to a dead plate wherein the take-out tongs for engaging the containers are mounted on a pair of holders that are pivoted like scissors relative to each other. A piston motor is pneumatically driven in one direction to cause the tongs and holders to close, and a spring, urging the piston in the opposite direction effects the opening of the tongs. When the tongs are open, the connection between the piston rod and the holders is a toggle linkage when the links are in a straight line preventing "winking" movement of the tongs toward closing by the fact of the toggle arrangement. Thus machine air closes the tongs and a fairly light spring force opens them.
Claims4
In glassware take-out mechanism wherein a pair of opposed tongs are moved into operative relationship with respect to the neck or finish of a glass container and closed about the neck for lifting the container by the neck and transferring the container to a machine dead plate, the improvement in the tong operating mechanism comprising:
- a cylinder housing;
- a piston positioned in said cylinder housing having a rod extending vertically downward therefrom;
- a bifurcated hanger assembly extending generally parallel to said piston rod and at either side thereof;
- a shaft extending between the lower ends of said hanger assembly;
- a pair of tong holders mounted on said shaft and pivotally supported with respect to the axis of said shaft;
- a compression spring biasing said piston in a downward direction into its lowermost positions;
- at least a pair of equal length links pivotally connected to and extending from the lower end of said piston rod to the upper ends of said tong holders respectively, said links describing a straight line when the piston rod is in its fully extended, lowermost position.
Dependencies are inferred from the claim text.