Trailer for farm machinery

In a trailer, in combination:

• a flat bed;
• transverse pivot means extending outwardly from the side of said bed;
• crank arms carried at first ends by said pivot means for pivotal movement between first positions, in which said arms extend at a right angle to said bed, and second positions, in which said arms lie along said bed without projecting materially above or below it;
• further means removably mounting wheels on said crank arms, for movement therewith about said pivot means through a range having a vertical component at least as great as the normal height of said bed above the ground, said further means including beams centrally pivoted to the crank arm, and axle means carried by said beams and oppositely spaced from the central pivot for supporting a plurality of wheels for tandem operation;
• and hydraulic motor means connected to said bed and said crank arms for causing the pivotal movement of said crank arms between said first position, in which said bed rests on the ground and said wheels are out of contact with the ground, and said second position, in which said wheels engage the ground, and said bed is at a desired height above the ground,
• wherein said further means includes a readily releasable connection for facilitating beam and wheel removal when said crank arms are in said first position.