(under subclass 307) Apparatus wherein the dredging tool consists of two pivotally cooperating digging elements which are adapted to be dropped in the open position into material to be excavated and then adapted to be closed to thereby encompass the material between the two elements. [figure] [caption]A - Grab bucket; B - Boom; C - Tag line; D - Hoist and hold wires; E - Winch; F - Hoist and hold drums; G - Pontoon; H - Side wire; J - Aft wire; K - Head wire
SEE OR SEARCH THIS CLASS, SUBCLASS:
461, for a clamshell bucket.
SEE OR SEARCH CLASS
212, Traversing Hoists,
81, and 84 for a grab combined with means to swing or shift the grab.
294, Handling: Hand and Hoist-Line Implements,
86.4+, for a device adapted for grasping a load and having handling and hoist-line terminals. 414, Material or Article Handling,
618+, wherein the load carrier is a seizing, grasping, or clamping device.
