JOHN MICHAEL MARTIN, NP
Nursing at R S Kimball, Ocean Springs, MS

4546852, Oct 15, 1985

Feb 7, 1984

6/577676

John F. Martin - Ocean Springs MS
Charles H. Zweifel - Biloxi MS

Fruehauf Corporation - Gulfport MS

E04G 310

182 12

An adjustable service platform apparatus for a gantry crane has an elongated base frame generally comforming in size and shape to a conventional load carrying lifting spreader, and twin service platform units secured to opposite lateral ends of the base frame. Work platforms atop the service platform units can be raised and lowered and laterally extended and retracted independently from the hoist and trolley motions of the crane, with the crane's hoist and trolley motions being interlocked with the position of the work platforms. Using work platform controls operators standing on the work platforms can readily access and inspect the structural elements of the crane's A-frame supporting structure and the crane's boom structure from the top of the boom to the base of the crane. The work platforms can additionally have inboard and outboard extensions for readily accessing the interior of the boom structure and the outside surfaces of the A-frame structure.