It shall be unlawful for any person or persons to haul or transport in or along any street or alley of this city, any stone, gravel, sand, dirt, lime, manure, offal, rubbish or other loose materials, liquids or substances in any vehicle which is not so constructed as to prevent the articles hereinbefore mentioned from dropping, sifting through or otherwise being strewn in or along such street or alley.
('74 Code, § 92.07) Penalty, see § 95.99