Abstract: A tension adapter is disclosed for a materials testing machine. The tension adapter includes a shank and a sleeve. The shank includes an enlarged head with a machined convex spherical bearing surface which forms a ring around the periphery adjacent to one end of the shaft. The opening of the sleeve includes a machine concave spherical bearing surface around the periphery thereof to form a seat for the convex spherical bearing surface. The sleeve further includes inner walls which are conical in order to allow the shank to rotate or pivot from the vertical orientation about the pivot point formed by the spherical bearing surfaces. The rotation or pivoting of the shank allows the tension adapter to align so that only tension forces are applied during materials testing.

Abstract: A tension adapter is disclosed for a materials testing machine. The tension adapter includes a shank and a sleeve. The shank includes an enlarged head with a machined convex spherical bearing surface which forms a ring around the periphery adjacent to one end of the shaft. The opening of the sleeve includes a machine concave spherical bearing surface around the periphery thereof to form a seat for the convex spherical bearing surface. The sleeve further includes inner walls which are conical in order to allow the shank to rotate or pivot from the vertical orientation about the pivot point formed by the spherical bearing surfaces. The rotation or pivoting of the shank allows the tension adapter to align so that only tension forces are applied during materials testing.

Abstract: A reservoir for the final treatment of sewage is provided with a fluid diverter, which is interconnected with and actuated by a float on the surface of the liquid collected in the reservoir. A submersible pump within the liquid recirculates liquid by spraying it through a foraminous header disposed above the liquid level. When the liquid level in the reservoir falls below a predetermined liquid level, the diverter permits the sprayed fluid to be returned to the reservoir. When the liquid level rises above the predetermined liquid level, the diverter diverts at least a portion of the fluid into the outlet pipe and continues to do so until the predetermined liquid level is restored.