“There is reason to believe that the impeding of the flow of the venous blood from the scalp caused by the tight sweat bands now in general use produces many of the headaches which afflict the male sex, and also that various other ailments of the head are caused by poisoning from the retarded venous blood. It, therefore, follows that men provided with hats constructed according to the principles of this invention will not be likely to suffer from these abnormal conditions.”
