Apparatus for injecting liquids into trees

Claim 1

APPARATUS FOR INTRODUCING FLUID TO THE CAPILLARY SYSTEM OF A TREE COMPRISING: (A) AN ELONGATED SHANK POINTED AT ONE END TO BE DRIVEN IN A TREE; (I) SAID SHANK HAVING AN AXIAL BORE SPACED FROM THE POINTED END OF THE SHANK AND COMMUNICATING WITH THE OTHER END OF THE SHANK, (II) AN ANNULAR PROJECTION EXTENDING RADIALLY AND HELICALLY FROM THE SURFACE OF THE SHANK AND DEFINING A SHOULDER FACING AWAY FROM THE SAID POINTED END OF THE SHANK AND EXTENDING RADIALLY BETWEEN THE TIP OF THE PROJECTION AND THE SURFACE OF THE SHANK, (III) SAID SHANK HAVING A PLURALITY OF VARIOUSLY DIRECTED RADIAL BORES EACH COMMUNICATING WITH THE AXIAL BORE AND THE SURFACE OF THE SHANK AT ITS JUNCTURE WITH THE SHOULDER, (IV) AN ANNULAR COLLAR FIXED TO THE SHANK IN SPACED RELATION FROM SAID OTHER END OF THE SHANK, (V) SAID HELICALLY EXTENDING ANNULAR PROJECTION BEING SPACED INWARDLY FROM THE POINTED END OF THE SHANK AND FROM THE ANNULAR COLLAR; AND (B) A DRIVING BLOCK HAVING A CAVITY TO LOOSELY RECEIVE SAID OTHER END OF THE SHANK AND ENGAGEABLE WITH THE COLLAR TO DRIVE THE SHANK INTO A TREE.