Ok Here is one. Scroll down the page and the post gives you directions for making a feeder out of PVC pipe (big round plastic sewer pipe).
https://www.backyardchickens.com/forum/viewtopic.php?id=69482
I don't mean to be dumb, but what is an allotment. Is it like an acre or small amount of land? Someone on here had feeders made out of PVC pipe. I don't know if you can get that where you are at, but I'll check the post and get back here.