| 摘要 |
A ball joint assembly that is a movable mount for a work holding device for holding an item, such as a rifle or pistol, where the ball joint assembly is for seating on, or mounting onto, a table top, bench, or like surface. The ball joint assembly includes a cylindrical housing slotted on opposite sides thereof from a center opening in the housing top and contains a ball that rests on a plunger top end of a jacking screw that is turned in a round nut by a lever arm, and the ball joint assembly is fitted into the housing. Turning of the lever arm that is fitted through a housing lateral slot extends the plunger top into the ball, lifting the ball to lock it against a housing top concave surface, and which ball includes a stem extending through the housing top to tilt between the slots and pivot when the ball in unlocked, and the ball stem end includes a tool mounting for connection to the work holding devices. |
