Multi-shell grab bucket

In a multi-shell grab bucket apparatus:

• a distributor head having a plurality of engine cylinder chambers rigidly fixed with respect to said distributor head and disposed in a common plane and extending radially outwardly from and angularly spaced about a center axis, engine pistons mounted for sliding reciprocatory movement within respective ones of said engine cylinder chamber and defining therewith double-acting reciprocating engines, and means defining fluid supply passages internally of said distributor head for supplying a fluid pressure medium to opposite ends of said engine cylinder chambers to effect reciprocation of the engine pistons;
• a plurality of actuatable scoops connected to respective ones of said engine pistons such that reciprocation of said engine pistons effects actuation of said scoops;
• and means connected to said distributor head for enabling suspension thereof from a boom, said means for enabling suspension of said distributor head including means connectable to an external source of fluid pressure medium for supplying the medium to said fluid supply passages located internally of said distributor head to effect actuation of said scoops.