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A trap primer (or trap seal primer) is a plumbing device or valve that adds water to traps.The water seals in traps are needed to prevent sewer gases from entering buildings, but because this water is exposed to the air, it is subject to evaporation over time in infrequently used floor drains, leading to the release of sewer gas into the environment.
A gas trap system involves "trapping" combustion gas as it leaves the muzzle. This gas impinges on a surface that converts the energy to motion that, in turn, cycles the action of the firearm. As the resulting motion is forward toward the muzzle of the gun, some sort of mechanical system is needed to translate this into the rearward motion ...
In 1915, Stevens led the U.S. arms business in target and small game guns. [4] On May 28, 1915, New England Westinghouse, a division of Westinghouse Electric, purchased Stevens. New England Westinghouse was created specifically to fulfill a contract to produce 1.8 million Mosin-Nagant rifles for Czar Nicholas II of Russia for use in World War I ...
In early black powder guns such as muzzleloaders, the primer was essentially the same chemical as the main propellant (albeit usually in a finer-powdered form), but poured into an external flash pan, where it could be ignited by an ignition source such as a slow match or a flintlock, though some muzzleloaders have primers like cap gun caps ...
In pump action firearms, a sliding grip at the fore-end beneath the barrel is manually operated by the user to eject and chamber cartridges. Pump actions are predominantly found in shotguns . Some examples of firearms using the pump-action are the Winchester Model 1912 , Remington 870 , and Mossberg 500 .
Components of a modern bottleneck rifle cartridge. Top-to-bottom: Copper-jacketed bullet, smokeless powder granules, rimless brass case, Boxer primer.. Handloading, or reloading, is the practice of making firearm cartridges by manually assembling the individual components (metallic/polymer case, primer, propellant and projectile), rather than purchasing mass-assembled, factory-loaded ...
Primers with insufficient depth may be detonated by the normal amount of firing pin movement as the cartridge is chambered by forward bolt movement. Primer response to impact is a function of the thickness and hardness of the metal cup containing the detonating explosive. Primers intended to respond to the comparatively light firing pin impact ...
The Pancor Corporation Jackhammer is a 12-gauge, blow-forward gas-operated bullpup automatic shotgun designed in 1984 and patented in 1987. Only three working prototypes of the Jackhammer were built, but despite notable interest, legal and financial issues meant the Jackhammer never entered production, though it was notably popular as a prop weapon in films, television shows, and video games ...