Abstract: Flexible skirts which engage the tops of the belts of conveyors are suspended from the sidewalls of the cover of conveyor by vertically adjustable skirt holders. Elongated plates engaging the walls have outwardly extending, U-shaped humps. U-shaped skirt clamping jaws are looped over the humps. Fasteners include eyebolts passing through the bights of the jaws with their eyes disposed in slots formed in the bends of the humps. The eyes are free to rock about a rod secured to the humps at their bends.

Abstract: An expansible coupling for sealingly joining the ends of a pair of fluid flow passages or ducts such as exhaust gas ducts, includes an inverted V-shaped rim attached to each duct adjacent to its open end. A pair of elongate, segmented clamping members having a longitudinal, V-shaped channel therein cooperatively mate with the rim, and a flexible non-metallic seal member has the marginal edge portions thereof retained between the rim and the clamping member. A plurality of adjustable fasteners having pivotal arms for quick release are positioned regularly about each duct end and urge the rim and clamping members together to form an airtight and flexible joint between the two duct ends.