Pintle exotic metal alloys. For World War II aircraft with sideways-retracting main gear units, carefully set-up "pintle angles" for such axes of rotation during retraction and extension allowed the maingear struts to be raked forward while fully extended for touchdown and better ground handling, while permitting retraction into rearwards-angled landing gear wells in their wings to usually clear the forward wing spar for stowing while in flight. Pintle A pintle is a pin or bolt, usually inserted into a gudgeon, which is used as part of a pivot or hinge. Other applications include pintle and lunette ring for towing, and pintle
Captive bolt pistol usually not visible in a stunner in good condition. The bolt is actuated by a trigger pull and is propelled forward by compressed air, spring mechanism, or by the discharge of a blank round ignited by a firing pin. After striking a shallow but forceful blow on the forehead of the animal, spring tension causes the bolt to recoil back into the barrel. The captive bolt pistol was invented in 1903 by Dr. Hugo Heiss, former director of a slaughterhouse in Straubing, Germany. Captive bolt pistols are of three types: penetrating, non-penetrating, and free bolt. The use of penetrating captive