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A rack and pinion has roughly the same purpose as a worm gear with a rack replacing the gear, in that both convert torque to linear force. However the rack and pinion generally provides higher linear speed — since a full turn of the pinion displaces the rack by an amount equal to the pinion's pitch circle whereas a full rotation of the worm screw only displaces the rack by one tooth width.
A crossed helical gear is a gear that operate on non-intersecting, non-parallel axes. The term crossed helical gears has superseded the term spiral gears. There is theoretically point contact between the teeth at any instant. They have teeth of the same or different helix angles, of the same or opposite hand.
An autoloader or auto-loader is a mechanical aid or replacement for the personnel that load ammunition into crew-served weapons without being an integrated part of the gun itself. The term is generally only applied to larger weapons, such as naval weapons , tanks , and artillery ; that would otherwise have a dedicated person or persons loading ...
English: diagram of the mechanism of a gun representing the trigger, the tumbler, the firing pin and the cap Français : schéma du mécanisme d'un fusil représentant la détente, la gâchette, le chien et l'amorce
A breechloader [1] [2] is a firearm in which the user loads the ammunition from the breech end of the barrel (i.e., from the rearward, open end of the gun's barrel), as opposed to a muzzleloader, in which the user loads the ammunition from the end of the barrel.
Firearm injuries are the leading cause of death in kids and teens in the U.S., making gun safety a priority for many families. But new research has found that parents who teach their children ...
The LR gun-mortar was also tested as a deck-mounted support weapon for maritime patrol craft such as the VCSM. [2] It utilizes a hydraulic recoil system. [ 1 ] The recoil length is 170 mm (6.7 in), maximum recoil thrust is 2,800 kg (6,200 lb), and the weight of the recoiling mass is 75 kg (165 lb).