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Finnish outdoor utility knife, puukko Retractable blade knife with replaceable utility blade A utility knife is any type of knife used for general manual work purposes. [1] Such knives were originally fixed-blade knives with durable cutting edges suitable for rough work such as cutting cordage, cutting/scraping hides, butchering animals, cleaning fish scales, reshaping timber, and other tasks.
An X-Acto knife equipped with a "Number 2" blade Parts of an X-Acto knife from left to right: (1) handle, (2) collar, (3) collet, (4) blade. An X-Acto knife is a blade mounted on a pen-like aluminum body. A knurled collar loosens and tightens an aluminum collet with one slot, which holds a replaceable blade.
Ka-Bar (/ ˈ k eɪ. b ɑːr /; trademarked as KA-BAR) is the contemporary popular name for the combat knife first adopted by the United States Marine Corps in November 1942 as the 1219C2 combat knife (later designated the USMC Mark 2 combat knife or Knife, Fighting Utility), and subsequently adopted by the United States Navy as the U.S. Navy utility knife, Mark 2.
Mad Dog Knives is a custom knifemaking facility headed by Kevin McClung, a former Senior Materials Scientist at the American Rocket Company, Mad Dog Knives is based in Prescott, Arizona. [ 1 ] [ 2 ] Mad Dog Knives made the fixed-blade knife known as the ATAK, used by Naval Special Warfare Groups 1 and 2 after the "SEAL Trials" of 1992. [ 3 ]
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A folding switchblade. A switchblade (also known as switch knife, automatic knife, pushbutton knife, ejector knife, flick knife, gravity knife, flick blade, or spring knife) is a pocketknife with a sliding or pivoting blade contained in the handle which is extended automatically by a spring when a button, lever, or switch on the handle or bolster is activated.
A gravity knife is a knife with a blade contained in its handle, which opens its blade through the force of gravity. [1] This mechanism of opening is fundamentally different from the switchblade , which extends its spring-propelled blade automatically upon the push of a button, switch, or fulcrum lever. [ 1 ]
Patent model of Daniel Hess's carpet sweeper. In 1860 a manual vacuum cleaner was invented by Daniel Hess of West Union, Iowa. Called a "carpet sweeper", it gathered dust with a rotating brush and had a bellows for generating suction. [4] [5] Another early model (1869) was the "Whirlwind", invented in Chicago in 1868 by Ives W. McGaffey. The ...