Vibratory apparatus for penetrating earth material and the like

Claim 1

IN A DEVICE FOR PENETRATING EARTH MATERIAL AND THE LIKE THE COMBINATION WHICH COMPRISES: (A) CUTTING MEANS; (B) A SUBSTANTIALLY RIGID COLUMN SECURED AT THE LOWER END THEREOF TO SAID CUTTING MEANS; (C) A HOUSING SECURED TO THE UPPER END OF SAID COLUMN; (D) AT LEAST TWO SHAFTS ROTATABLY MOUNTED IN SAID HOUSING, SAID SHAFTS BEING POSITIONED SUBSTANTIALLY PARALLEL TO EACH OTHER AND SUBSTANTIALLY PERPENDICULAR TO THE LONGITUDINAL AXIS OF SAID COLUMN; (E) BEARING MEANS SECURED BETWEEN SAID HOUSING AND EACH OF SAID SHAFTS FOR SUPPORTING SAID SHAFTS; (F) A TURBINE WHEEL MOUNTED ON EACH OF SAID SHAFTS; (G) MEANS INTERCONNECTING SAID SHAFTS TO SYNCHRONIZE THE SPEED OF SAID SHAFTS; (H) MEANS FOR EFFECTING EQUAL CONDITIONS OF DYNAMIC UNBALANCE IN EACH OF THE ASSEMBLIES COMPRISING A SHAFT AND A TURBINE WHEEL, SAID CONDITIONS OF UNBALANCE BEING ADDITIVE IN A DIRECTION ALONG THE AXIS OF SAID COLUMN AND CANCELING EACH OTHER IN A DIRECTION PERPENDICULAR TO THE AXIS OF SAID COLUMN;