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A jet mill grinds materials by using a high speed jet of compressed air or inert gas to impact particles into each other. [1] Jet mills can be designed to output particles below a certain size while continuing to mill particles above that size, resulting in a narrow size distribution of the resulting product. [ 2 ]
In World War I, aircraft were initially intended for aerial reconnaissance, however some pilots began to carry rifles in case they spotted enemy planes.Soon, planes were fitted with machine guns with a variety of mountings; initially the only guns were carried in the rear cockpit supplying defensive fire (this was employed by two-seat aircraft all through the war).
The "Coffee Mill" gun was also used somewhat by the Union during McClellan's Peninsula Campaign in 1862. The Union Army was not the only one to have used the "Coffee Mill" guns. In September 1862, Confederates obtained seventeen of the machine guns when they captured Harpers Ferry, and used them sparingly in 1864. [1]
Colleoni machine gun — 6.50×52mm Mannlicher–Carcano: Ammunition belt Italy: 1908 Colt Machine Gun: Colt's Manufacturing Company: 5.56×45mm NATO: Ammunition belt United States: 1965 Colt Automatic Rifle: 5.56×45mm NATO: Detachable box magazine United States: 1982 Darne machine gun: Hotchkiss et Cie: 7.50×54mm French 8.00×51mmR French ...
A Med-E-Jet vaccination gun from 1980. A jet injector, also known as a jet gun injector, air gun, or pneumatic injector, is a medical instrument that uses a high-pressure jet of liquid medication to penetrate the skin and deliver medication under the skin without a needle. Jet injectors can be single-dose or multi-dose.
Top: IWI Negev Bottom: FN MAG (general purpose machine gun) Czechoslovak 7.62 mm Universal Machine gun Model 1959 A .50 caliber M2 machine gun: John Browning's design has been one of the longest-serving and most successful machine gun designs. A machine gun (MG) is a fully automatic and rifled firearm designed for sustained direct fire with ...
The M134 Minigun is an American 7.62×51mm NATO six-barrel rotary machine gun with a high rate of fire (2,000 to 6,000 rounds per minute). [2] It features a Gatling-style rotating barrel assembly with an external power source, normally an electric motor.
The French St. Étienne Mle 1907 (French: Mitrailleuse Mle 1907 T) was a controversial gas operated air-cooled machine gun in 8mm Lebel which was widely used only in the early years of the First World War. [2] For “political reasons”, the "St.Etienne Mle 1907" was developed not to derive from the patented Hotchkiss machine gun.