Some Trigonometrical Inequalities With Applications To The Theory Of Series

A swaging tool for joining the ends of a number of tubes by a coupling member that may be a straight sleeve, an elbow, a tee, a cross, or some other configuration, said tool comprising swaging elements normally loosely mounted when in open position for receiving the members to be joined, and force supplying means acting substantially simultaneously on the die elements to move the die elements relative to each other and to the members to be joined so as to circumferentially enclose and radially inwardly swage the members.