Their use prevents damage to the ratcheting mechanism of a socket wrench. Lug nuts may be removed using a lug, socket or impact wrench. The most prevalent form is the ratcheting socket wrench, often informally called a ratchet. When installing lug nuts, it is recommended to tighten them with a calibrated torque wrench. The logo is of a pipe wrench crossed with a stone hammer. Applying the torque to fasteners is commonly achieved using a torque wrench. The symbol of the Earth Liberation Front is a monkey wrench and stone hammer. In 1935, Conrad Bahr and George Pfefferle patented an adjustable ratcheting torque wrench. It is usually in the form of a socket wrench with special internal mechanisms. It can be turned with an adjustable wrench, combination wrench and 6- or 12-point sockets. The wrench functions in the same general way as an ordinary beam torque wrench. The most basic form of torque wrench consists of two beams. Jason then beats Ali unconscious with a pipe wrench. Kubrick decided to throw a legal wrench into "Fail Safe"s production gears. A maneuver similar to a neck wrench where the wrestler faces a bent over opponent.