That § 12819 of the General Code be supplemented . . . to read as follows: Definitions. § 12819-3. For the purpose of this act, a machine gun, a light machine gun or a sub-machine gun shall be defined as any firearm which shoots automatically, or any firearm which shoots more than eighteen shots semi-automatically without reloading. Automatically as above used means that class of firearms which, while the trigger on the firearm is held back continues to fire successive shots. Semi-automatically means that class of firearm which discharges one shot only each time the trigger is pulled, no manual reloading operation being necessary between shots. Machine gun permit; application; bond or applicant; exceptions. § 12819-4. No person shall own, possess, transport, have custody of or use a machine gun, light machine gun or sub-machine gun, unless he first procures a permit therefor from and at the direction of the adjutant general of Ohio, who shall keep a complete record of each permit so issued. A separate permit shall be obtained for each gun so owned, possessed or used. The adjutant general shall require each applicant for such permit to give an accurate description of such weapon, the name of the person from whom it was or is to be obtained, the name of the person or persons to have custody thereof and the place of residence of the applicant and custodian. Before obtaining such permit each applicant shall give bond to the state of Ohio, to be approved by the adjutant general in the sum of five thousand dollars, conditioned to save the public harmless by reason of any unlawful use of such weapon while under the control of such applicant or under the control of another with his consent; and any person injured by such improper use may have recourse on said bond. Provided, however, that this section shall not affect the right of the national guard of Ohio, sheriffs, regularly appointed police officers of incorporated cities and villages, regularly elected constables, wardens and guards of penitentiaries, jails, prisons, penal institutions or financial institutions maintaining their own police force and such special officers as are now or may be hereafter authorized by law to possess and use such weapons when on duty. Any person who owns, possesses or has custody of a machine gun, light machine gun or sub-machine gun at the time when this section shall become effective, shall have thirty days thereafter in which to comply with the provisions of this section. Penalty for possession, transportation, etc., without permit. § 12819-5. Whoever owns, possesses, transports or has custody of or uses a machine gun, light machine gun or sub-machine gun without a permit, as provided by section 12819-4 of the General Code, or whoever having such permit, uses or consents to the use by another of such weapon in an unlawful manner, shall be guilty of a felony and upon conviction thereof, shall be imprisoned in the penitentiary not less than one nor more than ten years. [War trophies excepted].