Need Brakes ID'ed

[biggieou]

Hey everyone! I have a '28 Sport Coupe with juice brakes (I didn't install) and I need to ID them. The front driverside is hanging up quite a bit and I took the drum off to back them off, but there isn't a starwheel on them to adjust, just hinges on the bottom. What are these off of and how do I adjust them so they dont hang up? Also, should there be a rubber seal on the inside of the drum?