Means of erecting concrete floor and roof slabs in the construction of multi-floor buildings

Claim 1

MEANS FOR ERECTING FLOOR AND ROOF SLABS IN THE CONSTRUCTION OF MULTI-FLOOR BUILDINGS WHEREIN THE SLABS ARE FORMED WITH SLEEVES THEREIN WHICH ARE IN SLIDING ENGAGEMENT WITH RELATED COLUMNS; SAID MEANS CONSISTING OF A PLURALITY OF CASES, EACH CASE HAVING MEANS FOR ANCHORING THE SAME TO THE SIDE OF A RELATED COLUMN AND MEANS FOR CONNECTING SAID CASE TO A SLAB, SAID CONNECTING MEANS INCLUDING A SCREW LOCATED IN AND PROJECTING PERPENDICULARLY THROUGH SAID CASE, SAID SCREW HAVING MEANS FOR CONNECTING IT TO A SLEEVE IN SAID SLAB, TWO ABUTMENT MEMBERS IN SAID CASE IN SPACED RELATIONSHIP THROUGH WHICH SAID SCREW PASSES ONE SAID ABUTMENT MEMBER BEING FIXED IN SAID CASE AND THE OTHER MOVABLE VERTICALLY THEREIN; SPRINGS TO MOVE SAID MOVABLE ABUTMENT MEMBER AWAY FROM SAID FIXED ABUTMENT MEMBER, FIRST AND SECOND NUT BLOCKS ON SAID SCREW, SAID FIRST NUT BLOCK BEING ADAPTED TO REGISTER WITH SAID FIXED ABUTMENT MEMBER, SAID SECOND NUT BLOCK BEING ADAPTED TO REGISTER WITH SAID MOVABLE ABUTMENT MEMBER, SAID MOVABLE ABUTMENT MEMBER HAVING TWO SLIDE FACES REMOTE FROM SAID SECOND NUT BLOCK ONE ON EACH SIDE OF SAID SCREW IN PARALLEL SPACED RELATIONSHIP, TWO SLIDE MEMBERS IN SAID CASE JUXTAPOSED SAID SLIDE FACES, TWO WEDGE BLOCKS MOUNTED BETWEEN SAID SLIDE MEMBERS AND SAID SLIDE FACES, MEANS TO RECIPROCATE SAID WEDGE BLOCKS, MEANS CO-ACTIVE WITH THE WEDGE ACTUATING MEANS TO ROTATE SAID FIRST NUT BLOCK TO ENGAGE SAID FIXED ABUTMENT MEMBER WHEN SAID WEDGES RAISE SAID SCREW AS A RESULT OF SAID SECOND NUT BLOCK ENGAGING SAID MOVABLE ABUTMENT MEMBER AND TO ROTATE SAID SECOND NUT BLOCK TO RE-ENGAGE THE MOVABLE ABUTMENT MEMBER WHEN SAID WEDGES ARE RETRACTED AND SAID MOVABLE ABUTMENT MEMBER IS MOVED BY SAID SPRINGS AS PERMITTED BY THE RETRACTION OF THE WEDGES.