Abstract: An access prevention device having a rigid metal enclosure body made of metal plate and having a plurality of sides. A first elongated slot is formed linearly in a first wall and adapted to receive the shackle of a padlock inserted into a first end of the body. A second elongated slot is formed linearly in a second wall and adapted to receive the staple loop of a hasp interlinked with the shackle of the padlock. The device may be heat treated to resist being disabled. The padlock shackle encloses a portion of the first wall and the loop of the staple when it is locked into place. A protective skirt extends longitudinally between the ends of the body and forms the sides of the body. The protective skirt is adapted to protect the padlock shackle from access by external cutting devices.

Abstract: A fixture for deburring or chamfering corner edges of a workpiece. The fixture has a base adapted to be mounted on the table of a sanding or grinding machine of the type having a motor driven belt or disc which travels in a plane perpendicular to the machine table. The workpiece support table is rockably mounted on the machine table and has a pair of perpendicularly related upright guide plates the converging ends of which are spaced slightly apart to form a slot for accomodating the corner portion of the workpiece to be deburred or chamfered.