Abstract: The disclosed invention relates to a single hoist line operated clamshell bucket apparatus and method of use. The bucket apparatus is loaded in the usual manner at a first location for transporting bulk material to a second location where it is discharged. The bucket is discharged by sensing the presence of a preselected radio command signal that is controlled by the crane operator. The sensed radio signal operates a shut-off valve in a hydraulic controlled bucket latching system to release hydraulic fluid to permit discharge of the clamshell bucket.

Abstract: A new and improved apparatus for a grapple or clam shell bucket having a plurality of pivoted tines or bucket elements which are actuated to a closed or holding position by a first predetermined hydraulic pressure and which are held in closed position by a second predetermined pressure, and wherein the second predetermined pressure has a value lower than the first predetermined pressure to provide sufficient flexibility to a hydraulic hose supplying the hydraulic pressures to facilitate reeling the hose while maintaining the grapple or clam shell bucket in closed position.

Abstract: A clamshell bucket apparatus adapted to be suspended from a cable or line which may be used for raising, lowering and operating the bucket for picking up and dumping a load.