It is intended that this chapter shall be an amendment to Ordinance Nos. 1441, 1327 and 237 (as previously supplemented and amended), and is not intended to be a new zoning code, but that the repeal, abrogation or annulment of certain sections of Ordinance Nos. 1441, 1327 and 237 (as previously supplemented and amended), shall only be operative in such sections where the provisions of the instant ordinance are inconsistent with or contrary to the terms of Ordinance Nos. 1441, 1327 and 237 (as previously supplemented and amended), and in all such cases in which such provisions of Ordinance Nos. 1441, 1327 and 237 (as previously supplemented and amended) are contrary to or inconsistent with the provisions of this chapter, the provisions of this chapter shall prevail.