Abstract: A pair of stanchions (12) is mounted on a roof (4) for rotation about spaced apart vertical axes (18). Each end of an elongated platform (22) is connected to an upper horizontal portion (16) of one of the stanchions (12). Platform (22) is raised by winches (24). Workers (W.sub.1, W.sub.2) positioned on platform (22) push and pull on horizontal portions (16) to rotate stanchions (12 ) and move platform (22) into a suspended position outboard of the structure (2). Each horizontal portion (16) is provided with an outwardly extending lever (34) having a pull line (32) at its outer end. Workers (W.sub.1, W.sub.2) use levers (34) and pull lines (32) to assist in rotating stanchions (12). Workers (W.sub.1, W.sub.2) alternate pushing and pulling on the horizontal portions (16) of their respective stanchions (12).

Abstract: The window washer is suspended from the top of a building by a suspension line and moves up and down the line while cleaning the side of the building. Cleaning liquid is dripped onto brushes which scour the surface to be cleaned. A squeegee in wiping contact with the wetted surface wipes the cleaning liquid from such surface and collects it generally at a leading edge portion of the squeegee. Then, collected cleaning liquid is removed by suction.