Gang mower

Claim 1

A ROTARY MOWER ADAPTED TO BE PULLED ALONG THE GROUND IN A GENERALLY HORIZONTAL POSITION BEHIND A TRACTOR HAVING A POWER TAKE-OFF SHAFT, SAID MOWER COMPRISING A GENERALLY HORIZONTAL HOUSING HAVING A TOP WALL, A PAIR OF ELONGATED CUTTING BLADES SUPPORTED FOR ROTATION AT LATERALLY SPACED POINTS BENEATH SAID TOP WALL AND IN A PLANE GENERALLY PARALLED TO THE TOP WALL, DRIVE MEANS CONNECTING SAID BLADES AND THE TRACTOR, POWER TAKE-OFF FOR DRIVING SAID BLADES AND THE TRACTOR, MEANS SUPPORTING SAID HOUSING A PREDETERMINED DISTANCE ABOVE THE GROUND FOR THE CUTTING OF MATERIAL PASSING BENEATH THE HOUSING BY THE BLADES AS THE MOWER IS PULLED ALONG THE GROUND, SAID BLADES PROJECTING FROM BENEATH OF THE ADJACENT SIDE EDGE OF THE HOUSING AS THEY ROTATE, A WING HAVING A TOP WALL HINGED TO EACH SIDE EDGE OF SAID HOUSING FOR PIVOTING BETWEEN GENERALLY VERTICAL AND HORIZONTAL POSITIONS, EACH SAID WING TOP WALL COVERING THE ADJACENT BLADE AS IT PROJECTS THEREUNDER FROM BENEATH THE HOUSING, A RIGID BAR PIVOTALLY ATTACHED AT ONE END TO EACH WING TOP WALL, SAID BAR INCLUDING MEANS TO ADJUST THE LENGTH THEREOF. AN UPSTANDING BRACKET FIXED TO SAID HOUSING TOP WALL ADJACENT EACH WING INCLUDING MEANS FOR ATTACHMENT TO THE FREE END OF THE RIGID BAR WHEN THE WIND IS PIVOTED TO THE HORIZONTAL POSITION, AND A PAIR OF SECOND BRACKETS FIXED TO SAID HOUSING TOP WALL EACH AT A POINT FARTHER AWAY FROM ONE WING THAN SAID UPSTANDING BRACKET AND INCLUDING MEANS FOR ATTACHMENT TO THE FREE END OF SAID RIGID BAR WHEN THE WING IS IN THE VERTICAL POSITION WHEREBY SAID WINGS ARE HELD RIGIDLY IN EITHER THE VERTICAL OR HORIZONTAL POSITION BY ATTACHMENT OF THE RIGID BAR TO THE APPROPRIATE BRACKET AND THE ANGULAR POSITION OF THE WING AT EACH POSITION CAN BE CHANGED BY ADJUSTING THE LENGTH OF THE BAR.