[C&O2-10-4]

I recently picked up a nice Brinly Hardy rear cultivator with seven sweeps or shovels. It doesn't have the two wheels and rods. I would like to make these missing items, but I don't know what the ends of the rods that hold the wheels look like; and also need the wheel size.
Can someone provide photos and measurements ? I intend to restore it for display.

Thanks !
C&O2-10-4