If you go to the photo gallery section of the VHGMC website and put in ‘seed drills’ you can get up pictures of a Fedex drill like yours. There are a lot of local firms who made similar drills about the turn of the 20th century. I repaired the woodwork of my Horace Fuller drill by building it around the brush and axle as I couldn’t move the brush without breaking it.
You will also need the shute which drops the seed into the ground, made of tin they are a fairly standard design on these drills.
Philip