No female person shall frequent, loiter, or be employed in a tavern, bar, nightclub or cocktail lounge for the purpose of soliciting a male person to purchase drinks. No proprietor of such an establishment shall allow the presence in the establishment of a person who violates the provisions of this section. This section does not apply to female persons regularly employed as barmaids or waitresses while on duty. (Ord. 3623 §57, 1972).