Abstract: This invention provides for a loading arm for use with material handling systems and includes a support structure and an arm pivotally attached to the support structure for swivel movement in both the horizontal and vertical plane relative to the support structure.

Abstract: A building panel having inner and outer faces outlined by opposite ends and an upper and lower edges with opposite ends of the panel adapted to closely face the ends of adjacent panels in the same course. The outer face of the panel includes a lower portion of substantially greater surface area adapted for exposure and an upper portion of relatively smaller surface area adapted to underlie a lower portion of the back face of one or more panels laid up in the next higher course. At least one of the opposite ends of the panel is formed with a spacer projection adjacent the smaller upper portion thereof extending outwardly to provide an expansion space between a lower portion of said one end and an end of an adjacent panel positioned in the same course or row.

Abstract: The coupling disclosed is for attachment to a loading arm and permits attachment of the loading arm to flanges of different diameters by providing adapters which are releasably secured to the coupler. A different size adapter is utilized for each different size flange that the coupler is to be fastened to. The clamp arms move radially outward from the flowway through the coupler to accommodate larger size adapters which fit with larger size flanges to which the coupling is to be attached.