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US 4,079,896 AGranted
Expandable chuck for winding web material on a core
AssigneeAppleton Machine Company
InventorEdward F. Plach
Life of this patent
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Abstract
An expandable chuck is attached to a rotating mandrel by means of a locking ring. The chuck includes arbor and shoe segments in camming relationship whereby relative movement is effective for increasing the effective diameter of the shoe segments. A core upon which a web material is to be wound is placed over the shoe segments which are then extended by rotation of an adjusting nut to secure the core to the shoe segments. For high torque applications a pair of chucks may be employed.
Claims6
A chuck for connecting a hollow cylindrical member to a shaft for rotation therewith comprising:
- (a) an arbor having a tapered surface at one end thereof;
- (b) locking means mounted on said arbor for securing said chuck to said shaft;
- (c) a plurality of textured shoe segments having an inside surface tapered complementary to the taper of said arbor disposed over said one end of said arbor to form a cylindrical shell, said segments adapted to engage substantially the entire internal circumference of said cylindrical member and constituting the sole means of said engagement,
- (d) means for moving said shoe segments along the tapered surface of said arbor whereby the effective diameter of said shoe segments can be increased by movement in a first direction to engage said cylindrical member or decreased by movement in the opposite direction to disengage said member;
- and
- (e) means for transmitting torque from said arbor to each of said shoe segments.
3 more elements
Dependencies are inferred from the claim text.