Row marker

Claim 1

AN IMPLEMENT MOUNTABLE ON A TRACTOR HAVING A SOURCE OF FLUID PRESSURE COMPRISING: (A) A TOOL BAR MOUNTED ON THE TRACTOR AND EXTENDED TRANSVERSELY THEREOF, (B) GROUND WORKING TOOL MEANS MOUNTED ON THE TOOL BAR, (C) FIRST MARKER MEANS INCLUDING AN OUTER END SECTION HAVING AN EARTH-WORKING TOOL MOUNTED THEREON AND AN INNER END SECTION COMPRISING SPACED-APART MOUNTING MEMBERS HAVING A PAIR OF SUBSTANTIALLY ALIGNED APERTURES THEREIN, AND CRANK ARM MEANS SECURED TO ONE OF SAID MOUNTING MEMBERS AND HAVING A FULCRUM APERTURE THEREIN IN SUBSTANTIAL ALIGNMENT WITH SAID ALIGNED APERTURES AND HAVING A MEMBER DEPENDING THEREFROM, (D) MOUNTING MEANS FOR SAID FIRST MARKER MEANS INCLUDING AN ANGLE-BAR MEMBER MOUNTED ON ONE END OF SAID TOOL BAR AT SUBSTANTIALLY RIGHT ANGLES THERETO, A BRACE MEMBER CONNECTED TO SAID ANGLE-BAR MEMBER AND SAID TOOL BAR AT ACUTE ANGLES WITH RESPECT TO EACH FOR MAINTAINING THE PERPENDICULAR RELATIONSHIP THEREBETWEEN, END FLANGES ON SAID ANGLE-BAR MEMBER AT RIGHT ANGLES THERETO SPACED APART A DISTANCE SUBSTANTIALLY EQUAL TO THE SPACING BETWEEN SAID MOUNTING MEMBERS, SAID END FLANGES HAVING A PAIR OF SUBSTANTIALLY ALIGNED APERTURES, AND A BOLT EXTENDING THROUGH ALL OF SAID ALIGNED APERTURES FOR MOUNTING SAID MARKER MEANS ON SAID ANGLE-BAR MEMBER FOR PIVOTAL MOVEMENT WITH RESPECT THERETO ABOUT THE AXIS DEFINED BY SAID ALIGNED APERTURES, (E) FIRST FLUID MOTOR MEANS CONNECTED TO SAID TOOL BAR AND SAID DEPENDING MEMBER OF SAID CRANK ARM MEANS, SAID FIRST FLUID MOTOR MEANS OPERABLE IN RESPONSE TO FLUID PRESSURE FROM SAID SOURCE TO MOVE THE OUTER END SECTION OF THE FIRST MARKER MEANS FROM A WORKING POSITION TO A RAISED POSITION, (F) SECOND MARKER MEANS INCLUDING AN OUTER END SECTION HAVING AN EARTH-WORKING TOOL MOUNTED THEREON AND AN INNER END SECTION COMPRISING SPACED-APART MOUNTING MEMBERS HAVING A PAIR OF SUBSTANTIALLY ALIGNED APERTURES THEREIN, AND CRANK ARM MEANS SECURED TO ONE OF SAID MOUNTING MEMBERS AND HAVING A FULCRUM APERTURE THEREIN IN SUBSTANTIAL ALIGNMENT WITH SAID ALIGNED APERTURES AND HAVING A MEMBER DEPENDING THEREFROM, (G) MOUNTING MEANS FOR SAID SECOND MARKER MEANS INCLUDING AN ANGLE-BAR MEMBER MOUNTED ON THE OTHER END OF SAID TOOL BAR AT SUBSTANTIALLY RIGHT ANGLES THERETO, A BRACE MEMBER CONNECTED TO SAID ANGLE-BAR MEMBER AND SAID TOOL BAR AT ACUTE ANGLES WITH RESPECT TO EACH FOR MAINTAINING THE PERPENDICULAR RELATIONSHIP THEREBETWEEN, END FLANGES ON SAID ANGLE-BAR MEMBER AT RIGHT ANGLES THERETO SPACED APART A DISTANCE SUBSTANTIALLY EQUAL TO THE SPACING BETWEEN SAID MOUNTING MEMBERS, SAID END FLANGES HAVING A PAIR OF SUBSTANTIALLY ALIGNED APERTURES, AND A BOLT EXTENDING THROUGH ALL OF SAID ALIGNED APERTURES FOR MOUNTING SAID MARKER MEANS ON SAID ANGLE-BAR MEMBER FOR PIVOTAL MOVEMENT WITH RESPECT THERETO ABOUT THE AXIS DEFINED BY SAID ALIGNED APERTURES, (H) SECOND FLUID MOTOR MEANS CONNECTED TO SAID TOOL BAR AND SAID DEPENDING MEMBER OF SAID CRANK ARM MEANS OF SAID SECOND MARKER MEANS, SAID SECOND FLUID MOTOR MEANS OPERABLE IN RESPONSE TO FLUID PRESSURE FROM SAID SOURCE TO MOVE THE OUTER END SECTION OF THE SECOND MARKER MEANS FROM A WORKING POSITION TO A RAISED POSITION, AND (I) OPERATOR-ACTUATED CONTROL MEANS OPERABLE TO SEPARATELY CONNECT AND DISCONNECT THE FIRST AND SECOND FLUID MOTOR MEANS WITH THE TRACTOR SOURCE OF FLUID PRESSURE AND TO CONCURRENTLY CONNECT AND DISCONNECT THE FIRST AND SECOND FLUID MOTOR MEANS WITH THE TRACTOR SOURCE OF FLUID PRESSURE.