Agricultural implement

Claim 1

IN A MACHINE OF THE TYPE ADAPTED TO CARRY AND PROPEL A PLURALITY OF GROUND WORKING TOOLS AT SELECTED SPACING FROM EACH OTHER, THE COMBINATION OF AN ELONGATED TRANSVERSELY DISPOSED STRUCTURAL ELEMENT FLOATINGLY SUPPORTED ADJACENT ITS MID-PORTION AND PROPELLED OVER THE GROUND, A PLURALITY OF GROUND WORKING IMPLEMENTS SUPPORTED ON SAID STRUCTURE, A GAGE WHEEL ADJACENT AND IN SUPPORTING RELATION TO EACH END OF SAID STRUCTURE ARRANGED FOR UP-ANDDOWN MOVEMENT RELATIVELY TO SAID STRUCTURE AND ENGAGED WITH THE GROUND FOR SUPPORTING SAID STRUCTURE AND FOR ADJUSTING THE WORKING DEPTH OF SAID IMPLEMENTS, MECHANISM FOR EFFECTING SUCH UP-AND-DOWN MOVEMENT INCLUDING A SWINGABLE ARM JOURNALED ON SAID STRUCTURE AND CONNECTED WITH SAID GAGE WHEEL FOR RAISING AND LOWERING THE SAME, A MANUALLY OPERABLE MEMBER ADJACENT SAID MID-PORTION AND CONNECTED TO SAID ARM FOR ROCKING MOVEMENT THEREWITH, QUADRANT AND LATCH MEANS ADJACENT SAID ARM, INCLUDING LATCH MEANS ENGAGED WITH SAID QUADRANT AND WITH SAID ARM IN A PREDETERMINED LOCATION AND ENGAGEABLE WITH SAID QUADRANT IN A PLURALITY OF OTHER LOCATIONS TO LOCK SAID ARM AND SAID GAGE WHEEL IN A SELECTED POSITION AGAINST MOVEMENT, AND A CONNECTION FROM SAID MANUALLY OPERABLE MEMBER TO SAID LATCH AND OPERABLE FOR RELEASING SAID LATCH AND SAID ARM SO THAT THE POSITION OF SAID ARM AND CONSEQUENTLY SAID GAGE WHEEL MAY BE CHANGED BY MOVEMENT OF SAID OPERABLE MEMBER.