Abstract: The transom mounted swivel bracket (16) of an outboard marine drive (10) has a clamp (36) with a pair of spaced parallel end tabs (40, 42) having aligned apertures (54, 56). A screw (58) has a leading end extension (68) extending through the apertures (54, 56) in the tabs (40, 42), and a shoulder (66) engaging one of the tabs and driving the one tab (40) toward the other tab (42) as the screw (58) is turned further into the swivel bracket (16), such that the clamp band (36) is tightened around the steering tube (20) to increase frictional steering resistance. The other tab (42) is held and retained by the leading end extension (68) which prevents deformation yielding movement of the other tab (42) into the tubular portion (18) of the swivel bracket (16).

Abstract: An integrally bladed bimetallic rotor for high temperature operation having airfoils with good stress rupture and creep strength and a hub with high tensile strength and good low cycle fatigue resistance is made from a preform of two concentric cylinders of different superalloy metals metallurgically bonded to each other at their interface, both materials being in such a condition that they exhibit superplastic behavior at a certain, controlled strain rate and temperature without incurring substantial grain growth. The metal of the outer cylinder is selected such that it has a lower gamma prime solvus temperature than the metal of the inner cylinder. The preform is isothermally forged at the controlled strain rate and temperature to form the airfoils from the alloy of the outer cylinder and to form the hub from the alloy of the inner cylinder. A sharp, reproducible interface is created between the two alloys.

Abstract: A thermal treatment is described for the production of a particular microstructure in nickel base superalloys. Nickel superalloys having this microstructure are particularly adapted to be directionally recrystallized.

Abstract: An insulated material comprises a first wall having a surface with a layer of insulation thereover. The insulation is anchored to the wall by a plurality of rods which are each attached to the wall and extends through the insulation. The rods are interlocked at expansion point means which allows expansion and contraction of the rods without permitting movement of the insulation from its position.