Eraser

Claim 1

AN ERASER STRUCTURE WHICH COMPRISES A CASE HAVING A PAIR OF OPPOSITE WALLS AND A BOTTOM PORTION, A COVER CLOSING SAID CASE, A PARTITION TRAVERSING THE INTERIOR OF SAID CASE AND CONNECTED AT OPPOSITE ENDS TO SAID WALLS AND CONNECTED ALONG ITS LOWER EDGE TO SAID BOTTOM PORTION, SAID PARTITION WITH SAID COVER ON SAID CASE FORMING A PAIR OF SEPARATE COMPARTMENTS IN SAID CASE, A FIRST FIXED CYLINDRICAL PLUG MOUNTED ON ONE OF SAID WALLS IN ONE OF SAID COMPARTMENTS, A FIRST RETRACTABLE SPINDLE MOUNTED COAXIALLY OF SAID FIRST PLUG ON THE SECOND WALL OF SAID CASE IN SAID ONE COMPARTMENT, A SECOND FIXED CYLINDRICAL PLUG MOUNTED ON SAID ONE WALL IN THE OTHER COMPARTMENT, A SECOND RETRACTABLE SPINDLDE MOUNTED COAXIALLY OF SAID SECOND PLUG ON THE SAID SECOND WALL, FRICTIONAL ENGAGING MEANS ON THE PERIPHERY OF SAID SECOND SPINDLE, A KNOB MOUNTED ON THE OUTER END OF SAID SECOND SPINDLE EXTERIORLY OF SAID CASE FOR MANUALLY DRIVING SAID SECOND SPINDLE, MEANS FOR LIMITING AXIAL DISPLACEMENT OF SAID SECOND SPINDLE, A PAD MOUNTED ON THE EXTERIOR SURFACE OF THE BOTTOM OF SAID CASE, AND MEANS FORMING A PAIR OF SLOTS IN THE ENCLOSED CASE ADJACENT OPPOSITE EDGES OF THE BOTTOM PORTION OF SAID CASE, SAID CASE BEING IN THE FORM OF A FRAME, WHEREIN SAID OPPOSITE WALLS ARE END WALLS, THE SIDES OF SAID FRAME BEING OPEN, SAID COVER HAVING A TOP AND DEPENDING SIDE PORTIONS, THE OPPOSITE ENDS OF SAID COVER OVERLYING THE TOP AND SIDE EDGES OF SAID END WALLS, THE SIDE PORTIONS OF SAID COVER SUBSTANTIALLY CLOSING SAID OPEN SIDES OF SAID FRAME, MEANS ADJACENT SAID EDGES OF SAID END WALLS TO MAINTAIN SAID COVER IN FIXED CLOSED POSITION ON SAID END WALLS, THE LOWER EDGES OF SAID SIDE PORTIONS OF SAID COVER BEING DISPOSED PARALLEL TO AND SPACED A SHORT DISTANCE FROM THE ADJACENT SIDE EDGES OF SAID BOTTOM PORTION OF SAID FRAME, SAID SPACES BETWEEN SAID SIDE EDGES OF SAID BOTTOM PORTION AND SAID LOWER EDGES OF SAID COVER FORMING SAID PAIR OF SLOTS.