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US 4,160,530 AGranted
Core chuck
AssigneeAppleton Machine Company
InventorEdward F. Plach
Life of this patent
Estimating the term…
Abstract
A core chuck is disclosed which employs a set of expandable jaw sections. The jaw sections are expandable by operation of an adjusting pinion to which the jaw sections are connected by means of a keyway element. The chuck may be attached to a shaft or bearing stand by means of an adaptor plate.
Claims3
A core chuck comprising:
- (a) a chuck body of the lathe chuck type including a rotatable circular plate containing screw threads on one surface thereof and at least one adjustable pinion engaging said plate to control rotation of the plate,
- (b) at least two counterbored, radially aligned keyways formed in said body permitting access to said threaded surface of said plate,
- (c) a keyway element disposed in each of said keyways and in contact with said plate, said element including a plurality of raised segments on the plate side of said element for interengaging the screw threads on said plate, whereby the keyway element may be accurately positioned at a desired location within said keyway by rotation of said pinion,
- (d) jaw sections secured to the side of said keyway element remote from said plate for movement therewith, said jaw sections, in combination with each other, forming a split ring expandable gripping surface, cylindrical in cross-section and adapted to be inserted into a core and then expanded to permit each jaw section to securely engage the inner diameter of said core as function of rotation of said pinion.
1 more element
Dependencies are inferred from the claim text.