It is unlawful for any person to obstruct the access to any fire hydrant by placing around or thereon any stone, brick, lumber, dirt or other materials, or to open or operate any fire hydrant, or draw or attempt to draw water therefrom, or willfully or carelessly injure the same. [Ord. 962 Art. VI, § 64, 1959; Code 1970 § 13.16.140; Code 1954 § 4-3.126.]