Abstract: Disclosed is a hook which may be attached to an end of a rope and used to pull a boat into dock. The hook has an elongated shank having first and second ends and an end opening in the first end of the shank into which a rope may be received. A single tine extends from the second end of the shank and has a free end spaced from the shank. The shank has a substantially wide and flat surface directed towards the tine which together with the tine forms a hook throat. The first end of the shank, from which the rope may extend, is beveled to form an obtuse angle with the flat throat surface of the shank. When the hook is attached to a rope and is thrown over an object, the rope may be retracted to pull the hook toward the object such that contact of the angled first end of the shank against the object, in cooperation with the weight of the tine causes the hook to align itself such that the tine will engage the object.

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.

Abstract: A plurality of ring members each having a hard metal inner ring portion, a concentric elastomeric outer ring portion and a layer of elastomeric material bounding at least one radial face, are held by a cylindrical member in a stacked relation with the open centers of the ring members aligned. A pair of end plates, each having a wire rope aperature aligned with the open centers of the ring members, are secured together by a plurality of fasteners thereby retaining the cylindrical member between them. When a tensioned wire rope or the like passing through the open centers of the ring members bears sideways against the hard metal inner ring portions, the elastomeric outer ring portions distort to allow a bending line of contact between the wire rope and the hard metal inner ring portions.

Abstract: A platform mountable to extend between a pair of vertically movable stagings to provide a vertically movable elongated staging. The staging platform is composed of a plurality of like configured bridge sections vertically pivotably connected end to end and maintained in horizontal alignment between the spaced stagings and stretched taut beneath the bridge sections to prevent the staging platform from sagging while allowing the platform to bend upwardly. The pivotal connecting means between the bridge sections being spaced laterally at deck level of the platform and thus having substantial capability for flexing in response to longitudinal twisting forces exerted thereon.