(A)   No person, firm or corporation shall locate, build, construct, operate or maintain any factory or other establishment mentioned in § 110.045 of this chapter in any block in the city where a majority of the houses abutting on both sides of the street in the block are used exclusively for residence purposes, without having first secured the written consent of the owners of a majority of the frontage abutting on such street on both sides within such block.
   (B)   For the purpose of this section, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
      BLOCK. The portion of the street between the two intersections with other public streets nearest the specified location on each side; provided that, if, on either or both sides of such location, there is no such intersection within 300 feet of the center of the specified location, the block shall be considered as terminating at a point 300 feet from such center.
         (a)   Such highways as have been dedicated by either common law or statutory dedication as public streets and are actually in use as such; and
         (b)   The term STREET shall not be construed to include or mean merely service highways which are commonly known as alleys.
(Prior Code, § 23-53)