The only thing I see pertaining to weapons in their codes is you can't carry on a bus or on a bus operator's property.
I think engaging the sheriff is a good idea. But what if that fails? You might then try to go through the county attorney or prosecuting attorney's office. They will hold more water with the sheriff than you will, and should know the law.
By the way, the Jefferson Co ordinances are here, if someone else wants to check them out: http://codes.sullivanpublications.co...soncounty-slp/