Movable bearing support

Claim 1

A SUPPORT CONSTRUCTION FOR A PORTION OF A STRUCTURAL MEMBER SUBJECT TO MOVEMENT DUE TO FORCE IMPOSED ON SAID PORTION, SAID SUPPORT CONSTRUCTION COMPRISING: (A) AN ELONGATED MEMBER BEARING PLATE JOINED TO AND BENEATH SAID STRUCTURAL MEMBER PARALLEL TO SAID STRUCTURAL MEMBER, (I) HAVING TWO ENDS AND A SMOOTH FLAT BEARING SURFACE FACING AWAY FROM SAID STRUCTURAL MEMBER, (B) AN ELONGATED BASE BEARING PLATE ADAPTED TO BE JOINED TO A SUPPORT STRUCTURE, SAID BASE BEARING PLATE, (I) BEING ORIENTED AT RIGHT ANGLES TO SAID MEMBER BEARING PLATE (II) HAVING TWO ENDS AND A SMOOTH FLAT BEARING SURFACE FACING TOWARD SAID STRUCTURAL MEMBER, (C) A SHORT CYLINDER MEMBER (I) HAVING A FLAT SMOOTH UPPER END FACE AT RIGHT ANGLES TO THE AXIS OF SAID CYLINDRICAL MEMBER, SAID UPPER END FACE, (A) HAVING A SUBSTANTIALLY UNIFORM SHEET COMPOSED ESSENTIALLY OF POLYTETRAFLUOROETHYLENE BONDED TO SAID FACE AND BEING IN CONTACT WITH SAID SMOOTH FLAT BEARING SURFACE OF SAID MEMBER BEARING PLATE (II) HAVING A FLAT SMOOTH LOWER END FACE PARALLEL TO SAID UPPER END FACE, AND, (A) HAVING A SUBSTANTIALLY UNIFORM SHEET COMPOSED ESSENTIALLY OF POLYTETRAFLUOROETHYLENE BONDED TO SAID FACE, (B) BEING IN CONTACT WITH SAID SMOOTH FLAT BEARING SURFACE OF SAID MEMBER BEARING PLATE, (D) MEANS EXTENDING FROM ONE OF SAID MEMBER BEARING PLATE AND SAID FLAT SMOOTH UPPER END FACE FOR GUIDING AND RETAINING SAID CYLINDER SLIDE MEMBER RELATIVE TO SAID MEMBER BEARING PLATE, (E) MEANS EXTENDING FROM ONE SAID BASE BEARING PLATE AND SAID FLAT SMOOTH LOWER END FACE FOR GUIDING AND RETAINING SAID CYLINDER SLIDE MEMBER RELATIVE TO SAID BASE BEARING PLATE, (F) SAID MEMBER BEARING PLATE BEING OF A LENGTH AND LOCATION SUCH THAT ITS TWO SAID ENDS ARE ALWAYS OUTSIDE THE EDGES OF SAID UPPER END FACE, (G) SAID BASE BEARING PLATE BEING OF A LENGTH AND LOCATION SUCH THAT ITS TWO SAID ENDS ARE ALWAYS OUTSIDE THE EDGES OF SAID LOWER END FACE.