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US 5,960,689 AGranted
Bar puller
AssigneeWarren Metallurgical Inc.
InventorMalcolm Warren
Life of this patent
Estimating the term…
Abstract
An apparatus for gripping a bar supported for rotation by a numerically controlled lathe. The apparatus contains two jaws and a gripper cam pivotally attached to each jaw; springs attached to the jaws tend to rotate the gripper cams away from the jaws. A device is provided for moving the jaws together, moving the jaws apart, and locking the jaws into a fixed position.
Claims9
An apparatus for gripping a bar supported for rotation by a numerically controlled lathe having a plurality of tool stations, the tool stations being movable along and transverse to the rotational axis of the bar, wherein said apparatus comprises:
- (a) a housing having a long axis, adapted to be mounted at a tool station;
- (b) a first jaw and a second jaw, a first gripper cam pivotally attached to said first jaw by means of a first pivot pin, a second gripper cam pivotally attached to said second jaw by means of a second pivot pin, first spring means contiguous with said first jaw and said first gripper cam for rotating said first gripper cam away from said first jaw, and resilient means contiguous with said second jaw for rotating said gripper cam away from said second jaw,
- (c) means for moving said first jaw and said second jaw towards each other,
- (d) means for moving said first jaw and second jaw away from each other, and
- (e) means for locking said first jaw and said second jaw in a fixed position with regard to each other.
2 more elements
Dependencies are inferred from the claim text.