Quick Screw Clamp

For removal of yellow workpiece:
- Turn pink nut counterclockwise to move outer pin of violet screw out of the groove on blue washer.
- Turn the latter 90 deg. to make the outer pin be in line with the slot on blue washer and remove the washer.
- Remove the workpiece.
Do the reverse to install the workpiece.
The groove on the face of green bush prevents the pink screw from rotation.
This fixture is numbered as 1320 in the book “ Mechanical Fixtures Tooling”