Dual speed sprinkler

Claim 1

A SPRINKLER COMPRISING: (A) A SPRINKLER HEAD; (B) A TUBULAR SHAFT SUPPORTING SAID SPRINKLER HEAD FOR CONTINUOUS ROTATION; (C) AN INTERNAL GEAR MEANS FOR DRIVING SAID SHAFT AND SPRINKLER HEAD, SAID INTERNAL GEAR MEANS INCLUDING A FIRST AND SECOND SET OF GEAR SEGMENTS, THE SEGMENTS OF EACH SET BEING SEPARATED BY ARCUATE BLANK PORTIONS; (D) A FIRST DEVICE MEANS ENGAGEABLE WITH THE FIRST SET OF GEAR SEGMENTS TO ROTATE SAID SPRINKLER HEAD AT A SELECTED NORMAL SPEED; (E) A SECOND DRIVE MEANS ENGAGEABLE WITH THE SECOND SET OF GEAR SEGMENTS TO ROTATE SAID SPRINKLER HEAD AT A SLOWER SPEEDS; (F) SAID GEAR SEGMENTS BEING POSITIONED TO MOVE SAID SPRINKLER HEAD IN COMPLEMENTARY ARC ALTERNATELY AT NORMAL AND SLOWER SPEEDS; (G) BOTH OF SAID DRIVE MEANS BEING SIMULTANEOUSLY ENGAGEABLE WITH THEIR RESPECTIVE GEAR SEGMENTS AT THE BEGINNINGS AND ENDS OF SAID GEAR SEGMENT; (H) AND YIELDABLE MEANS NORMALLY URGING ONE OF SAID DRIVE MEANS INTO ENGAGEMENT WITH ITS INTERNAL GEAR SEGMENTS AND OPERATIVE TO GO RENDER SAID DRIVE MEANS INOPERATIVE DURING SAID SIMULTANEOUS ENGAGEMENT.