Double Back Dining Chair by David J. Irwin
The Most obvious place to hang your jacket whilst eating is on the back of your chair. In most circumstances this works fine but a lot of the time the jacket can either fall off, discomfort the person in the chair or can be left creased and flattened. The back of the chair works well as a place to keep your jacket until you sit down. By adding a separate rail at the back of the chair which the user does not come into contact with the problem can be avoided. It can also act as a hanger for other items such as handbags for example.
(via Cool Concept Dining Chairs by David J. Irwin | Chair Design)