Lathe chuck having a hollow arbor
OwnerDouglas A. Myersinventor
Life of this patent
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Abstract
The present invention provides a lathe chuck having a hollow arbor and a cylindrical turning shaft which slides within the hollow arbor. Such an arrangement accommodates a turning shaft of considerably greater length than would ordinarily be possible. For one embodiment of the invention, the chuck is hand-tightenable, the arbor is an integral part of the chuck assembly, and is equipped with a standard Morse taper. The tapered arbor installs in the end of a lathe output shaft or spindle. The turning shaft is equipped with at least one pair of work-securing collets, at least one threaded end and a nut which engages the threaded end and secures one or more work pieces between the collets and to the turning shaft.
Claims14
A lathe chuck comprising:
- a tapered hollow arbor having a cylindrical central aperture which extends the length thereof;
- a cylindrical turning shaft which slides within the hollow arbor;
- a pair of collets, each of which slides over the turning shaft, and which can be positioned at opposite ends of a workpiece;
- threads formed on at least one end of said turning shaft;
- and
- a nut which engages said threads and can be used to secure a workpiece between said pair of collets.
A workpiece holder comprising:
- a tapered hollow arbor having a cylindrical central aperture which extends the length thereof;
- an adjustable chuck coupled to a larger end of said tapered hollow arbor, said adjustable chuck having a hollow jaw holder threadably coupled to the larger end of said tapered hollow arbor, three jaws mounted within the jaw holder, a hollow jaw retainer body that moves the jaw holder and the jaws forward or back as it is rotated;
- a cylindrical turning shaft which slides through said through-hole aperture and within said hollow arbor;
- a pair of collets, each of which slides over the turning shaft, and which can be positioned at opposite ends of a workpiece;
- threads formed on at least one end of said turning shaft;
- and
- a nut which engages said threads and can be used to secure a workpiece between said pair of collets.
Dependencies are inferred from the claim text.