[Amended 2-20-1995 by Ord. No. 1709]
A.
The term "dangerous weapon" shall have the meaning used in § 939.22(10), Wis. Stats., and may include any instrument which by its capabilities of use is liable to produce death or great bodily harm. The following are dangerous per se: blackjack, billy sandclub, sandbag, bludgeon, slingshot, slung shot, nunchaku consisting of two sticks of wood, metal, or plastic connected by a length of rope, cord, chain, or wire, pistol, revolver, any instrument which impels a missile by compressed air, spring or other means, any weapon upon which loaded or blank cartridges are used, electric weapons as defined by § 941.295, Wis. Stats., cross-knuckles, knuckles of any metal, barbed or blade-type arrowhead, bowie knife, dirk, dagger, switchblade knife, or any knife which has a blade that may be drawn without the necessity of contact with the blade itself but is instead automatically opened by slight pressure on the handle or some other part of the knife and is commonly known as a "switchblade knife," straight edge razor or any other knife having a blade three inches or longer. Instruments not herein specifically enumerated are nonetheless dangerous weapons when they fall within the terms of the above definition.
B.
The term "dangerous weapon" shall not include antique firearms, as defined in 18 U.S.C. § 921(a)(16), nor those firearms which are incapable of being fired or discharged or which do not fire fixed ammunition, or those manufactured before 1898 for which cartridge ammunition is not commercially available, and which are possessed as curiosities or ornaments or for their historical significance or value.