Abstract: A highly corrosion resistant, durable, strong, hardenable and relatively inexpensive nickel based alloy containing chromium and a high iron content has improved castability and weldability. The alloy contains approximately the quantities indicated: nickel 33 to 53 (to balance to 100 percent), chromium 20 to 25 percent, molybdenum 6 to 9 percent, cobalt 4 to 8 percent, iron 15 to 20 percent, manganese 2 to 4 percent, copper less then about 0.15 percent, carbon up to 0.2 percent and silicon 0.5 to 1.0 percent. The alloy is air meltable and produces a highly fluid castable melt. All percentages are by weight.

Abstract: The invention relates to an apparatus for rotating a suspended material handling unit comprising an elongated housing to suspend the upper end of the housing from a pivotable support, and a rotor member, having a material handling unit mounted thereto. A bearing is mounted externally of the housing between the ends of the housing so as to rotationally support the rotor member relative to the housing. A fluid operated rotary motor is mounted inside the housing and has a vertical drive shaft depending from the bottom of the housing. Drive members are operatively connected to the vertical drive shaft for rotating the rotor member and the material handling unit relative to the housing. A hydraulic swivel sleeve is mounted on the external surface of the housing unit below the bearing for rotation relative to the housing. A fluid operated motor for actuating the materials handling unit is provided as are fluid conducting members interconnecting this motor, the swivel sleeve and a source of operating fluid.

Abstract: A snubbing device for a suspended grapple or the like operable by pressurized fluid in a cavity between a pin and housing of a universal joint which actuates a ramp to cause a retarding reaction between the pin and housing to prevent free swinging of the grapple.

Abstract: A snubbing device for a suspended grapple or the like operable by pressurized fluid in a cavity between a pin and housing of a universal joint which actuates a ramp to cause a retarding reaction between the pin and housing to prevent free swinging of the grapple.

Abstract: A method and apparatus for installing a traveling hose array in a mobile tree harvester. One end of the hose array travels with the extensible delimbing head of the harvester, and a hose reeving system including a movable trolley is provided to maintain a constant hose length.The hoses are pretensioned at assembly, and a reeved cable system is provided to maintain tension on the hose array and to return the hose array upon retraction of the delimbing head.

Abstract: A highly corrosion resistant, durable, strong, hardenable and relatively inexpensive nickel based, high chromium, high iron, austenitic alloy has greatly improved malleability and hot workability. The alloy contains approximately the quantities indicated:Ni--30-48% (preferably to 38%, to balance to 100%)Cr--30-35%Co--4-7.5%Fe--3-25% (but preferably 10-25%)Mn--1-3.5%Cu--2.5-8%C--to 0.25%And has a content of Mo from about 0 to 3%, a content of Si from about 0.3% and wherein the sum of the Mo and Si content is less than about 4%. Boron may be added to increase the workability and forging properties of the alloy. The preferred content of approximately 3% Si and approximately 1% molybdenum results in an optimum balance of the age hardenable workability, and corrosion resistant properties. All percentages are by weight.