| 主权项 |
1. A safety harness attachment apparatus for tethering a workman to the ridge of a pitched roof of a building, said pitched roof including a pair of roof overhangs on opposite sides of said ridge, comprising:
an anchor assembly, said assembly including
a hinge comprising first and second hinge plates and a hinge pin inserted through aligned, interleaved knuckles of said hinge plates; first and second support blocks underlying and attached to the first and second hinge plates, respectively; and means for attaching a proximal end of a tether line to the anchor assembly; first and second ratchet tie downs, wherein
each ratchet tie down includes a ratchet tie down strap threaded therethrough;each strap extends from a proximal end thereof through the ratchet tie down and thence to an opposite, distal end thereof; andeach ratchet tie down includes a handle the reciprocal movement of which ratchets said strap through said ratchet tie down; first and second grapples, each grapple being shaped and dimensioned for receiving in surrounding engagement a roof overhang, each grapple including
an upper bar;a lower bar that is parallel to said upper bar;a bight that lies in a plane perpendicular to the upper and lower bars and joins mid portions of said bars to each other, said bight including oppositely-disposed, upper and lower leg portions, said upper leg portion extending from the upper bar in a direction away from the lower bar and said lower leg portion extending from the lower bar in a direction away from the upper bar;means for attaching a distal end of a ratchet tie down strap of each of the first and second ratchet tie downs to the bight of the first and second grapples adjacent to and above the upper leg portions thereof; andmeans for attaching a proximal end of a ratchet tie down strap of each of the first and second ratchet tie downs to the first and second hinge plates, respectively. |
