Abstract: This invention relates to utility knives used to cut various items, including cartons, cardboard, string and wallpaper. Specifically, the invention provides a disposable one-piece razor blade utility knife in which the blade is adjustable yet permanently affixed to the knife handle. When the complementary shells of the handle are open, the blade may be placed in a usable position in which the cutting edge will protrude out of the handle when the shells of the knife are later closed or in a safety position in which the blade will be fully retained in the handle when the knife is closed.

Abstract: A scraper may be composed of a front portion, including a guard portion, hingeably connected to a handle portion. The handle portion includes a blade portion for receiving and retaining a cutting blade. The front portion is scored to allow the guard portion to fold against the top face of the handle portion, thereby substantially enclosing the blade and acting to provide protection for various objects and personnel from inadvertent contact with the sharp cutting blade when the scraper is not in use. When use of the scraper is desired, the front portion is folded against the bottom face of the handle portion thereby exposing the cutting edge of the blade.