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An extractor also performs the function of an ejector in revolvers. When the striking force applied to the ejector rod is hard and fast enough, the extractor will typically eject the empty case(s) from the cylinder. Some break-action shotguns are also designed to eject empty shells completely out of the chamber when the barrel is opened.
A vacuum ejector, or simply ejector, or aspirator, is a type of vacuum pump, which produces vacuum by means of the Venturi effect.. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area.
Rim lock is where the rim of the shell casing gets caught on the extractor groove of the casing underneath it. It is a common issue for calibers with large rims, such as 7.62×54mmR , or guns that have been rechambered for cartridges shorter than intended without replacing the original magazine with one that compensates for the shorter round.
Rimless cases are not well suited to break-open and revolver actions, though in break-action firearms they can be used with appropriate modifications, such as a spring-loaded extractor/ejector or, in a revolver, a half or full moon clip (for example, the Colt or Smith & Wesson M1917 revolvers in .45 ACP). [4]
The case is not chemically sticking as it still rotates with the bolt, gripped by the extractor claw on the rim. The mechanical sticking effect is a result from the case having expanded due to the high pressures during firing, and the extra initial force required can, depending on firearm design, make the extraction difficult for the user.
Since the cartridge extractor or ejector is built into the barrel assembly in break action weapons, the breech face is simply a flat plate with a hole for the firing pin to protrude through. This makes break actions ideal for interchangeable barrel firearms, such as the popular Thompson/Center Arms Contender and Encore pistols. The simplicity ...
Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping ...
Model 183D-A Bolt Action Repeater, left hand extractor added. Made 1948-1950. ... Model 183D-D Bolt Action Repeater, change to ejector interrupter. Made 1956-1960. [1 ...
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