Variable weight bar bell exercising device

Claim 1

A WEIGHT LIFTING EXERCISE DEVICE COMPRISING A PAIR OF HOLLOW BULBOUS MEMBERS SPACED APART AT OPPOSITE ENDS OF AN ELONGATED HANDLE, SAID BULBOUS MEMBERS BEING THIN WALLED AND EACH COMPRISED OF A PAIR OF MATING DEEPLY CONCAVE SHELLS SECURED TO EACH OTHER ALONG AN ANNULAR SEAM, SAID SEAMS LYING IN SPACED APART PARALLEL PLANES EXTENDING PERPENDICULAR TO THE LONGITUDINAL AXIS OF THE HANDLE AT OPPOSITE ENDS THEREOF, THE INNERMOST OF EACH OF SAID PAIR OF MATING SHELLS BEING RIGIDLY SECURED TO ONE END OF SAID HANDLE, A REINFORCING PLATE DIVIDING EACH OF SAID BULBOUS MEMBERS INTO A PAIR OF CHAMBERS, SAID REINFORCING PLATE LYING BETWEEN EACH PAIR OF SAID MATING SHELLS IN THE PLANE OF SAID SEAMS AND SECURED THERETO, AN OPENING IN THE OUTERMOST OF THE MATING SHELLS OF EACH OF SAID BULBOUS MEMBERS FOR INTRODUCTION OF A WEIGHT-ADDING MATERIAL TO EACH OF SAID BULBOUS MEMBERS, A REMOVABLE CLOSURE FOR SAID OPENING, COMMUNICATING PORTS BETWEEN THE CHAMBERS IN SAID BULBOUS MEMBERS DEFINED BY SAID SHELLS AND SAID REINFORCING PLATE FOR PASSAGE OF WEIGHTADDING MATERIAL BETWEEN SAID CHAMBERS AND BARRIER MEANS TO PREVENT PASSAGE OF WEIGHT-ADDING MATERIAL BETWEEN SAID BULBOUS MEMBERS.