Frame folding arrangement with vertically pivoting planting units

A seeding machine comprising:

• a main frame having a front rank of planting units and a rear rank of planting units, the main frame having a working configuration and a transport configuration;
• left and right wing frames are pivotally mounted to the main frame so that they can be pivoted from a working configuration to a transport configuration, each of the left and right wing frames are provided with a front rank of planting units and a rear rank of planting units;
• a hopper for holding seed;
• pivot arms each having a first end and a second end are mounted to the left and right wing frames, the first end of each pivot arm is pivotally mounted to the respective wing frame, the pivot arms having a working position, an intermediate non-working position and a transport position;
• the rear rank of planting units on the left and right wing frames are mounted to the second ends of the pivot arms, when the pivot arms are in their working position the planting units are in contact with the ground, when the pivot arms are in their intermediate non-working position the planting units are raised out of contact with the ground, and when the pivot arms are in their transport position the planting units are raised past their intermediate non-working position into a predominantly vertical configuration;
• a flexible tube extends between the hopper and the planting units for directing seed from the hopper to the planting units;
• when the wing frame is moved to its transport configuration, the pivot arms are raised into their transport position.