The Mayor shall designate by executive order any department head or the City Clerk to act as Mayor whenever the Mayor is unable to attend to the duties of his office; and the person so designated shall possess all of the rights, powers and duties of the Mayor. If the disability of the Mayor to attend to his duties persists for sixty consecutive days, Council shall appoint one of its members as Acting Mayor; and such member shall succeed to all of the rights, powers and duties of the Mayor or then Acting Mayor, as the case may be, until such time as the disability of the Mayor ceases or a vacancy occurs in the office of Mayor or the term of office of the Mayor expires. (Ord. 2-1962 § 306.)