1923 Mo. Laws 241-42, An Act to Provide the Exercise of the Police Powers of the State by and through Prohibiting the Manufacture, Possession, Transportation, Sale and Disposition of Intoxicating Liquors. . .§ 17.

Any person, while in charge of, or a passenger thereon, who shall carry on his person, or in, on, or about, any wagon, buggy, automobile, boat, aeroplane, or other conveyance or vehicle whatsoever, in, or upon which any intoxicating liquor, including wine or beer, is carried, conveyed or transported in violation of any provision of the laws of this state, any revolver, gun or other firearm, or explosive, any bowie knife, or other knife having a blade of more than two and one-half inches in length, any sling shot, brass knucks [sic], billy, club or other dangerous weapon, article or thing which could, or might, be used in inflicting bodily injury or death upon another, shall be deemed guilty of a felony, and, upon conviction thereof, shall be punished by the imprisonment in the state penitentiary for a term of not less than two years. Provided, that this section shall not apply to any person or persons transporting intoxicating liquor for personal use and not for sale in violation of law. Provided, that this section shall not apply to any person or passenger who did not know that such vehicle or conveyance was being used for unlawful purposes.