Eat at the Knot! Make your next Chickasaw Country dining excursion The Rusty Knot in Purcell, Oklahoma. The environment of this restaurant is rustic and comfortable and the service is top notch. Try one of the customer faves such as the Knotty (Potato) Skins, Cheese Fries, Ranch Chicken Sandwich or Double Patty Classic Cheeseburger. There is also a full service bar with live music on weekends.