latch arms 44 and 46 stops 58 39 and 60 39 not shown are mounted on opposite sides of the forward end of tongue section 22 when the locking latch arms 44 and 46 are in their lowered position and the tongue means is in its transport position the engagement of lug portions 52 and 54 with the rearward ends of stops 58 and 60 39 prevents the separation of tongue section 16 from tongue section 14 movable actuator arm 62 is positioned on one side of tongue section 14 and has its rearward end in close proximity with the lower forward end of latch arm 44 as seen in fig1 the forward end of actuator arm 62 is in close proximity with the rearward end of plate p1 of tongue lift assembly 26 so that when tongue section 14 is raised by hydraulic cylinder 32 relative to frame member 28 plate p1 causes actuator arm 62 to move rearwardly the rearward movement of actuator arm 62 causes latch arm 44 and latch arm 46 to pivot upwardly so that locking lug portions 52 and 54 are clear of stops 58 and 60 respectively to permit the extension of the tongue sections relative to one another tool bar 10 includes a center tool bar section 66 having wing sections 68 and 70 pivotally connected thereto as seen in the drawings center tool bar section 66 includes a lower frame member 72 and an upper frame member 74 secured thereto and positioned thereabove wing section 70 includes an outer frame member.