A. It is unlawful for any person to commence or continue, as a substantial part of his business, the collection, lending money upon, purchase, exchange and sale of used articles without having first secured from the city a license to do so. Whenever “person” is used in this chapter, it means and includes any person, firm, partnership, association, company or organization of any kind.

B. This chapter shall not apply to a person dealing in new and used automobiles, new or used furniture, new or used farm implements and machinery, or conducting a similar business when the used automobiles, furniture, farm implements or machinery is taken in by such person as a part of the sale of a new item; but shall be deemed to apply to those places which devote a substantial portion of their business to the buying, selling, exchanging or lending upon used articles.