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"  1785: A chain handsaw model appears in John Aitken&amp;#039;s Principles of Midwifery, or Puerperal Medicine. The fine serrated chain is used to remove diseased bone. 1926: Andreas Stihl patents two-person saws: a 116-pound electric model, and a 139-pound gas one in 1929. U.S. troops bring them home from Europe in 1941 to be imitated. 1945: Chain saws before the end of World War II are heavy, often wheeled, two-person devices. The development of aluminum alloys and forged steel parts leads to one-person saws. 1947: Inspired by timber beetle larvae, which chew both across and with wood grain, Joseph Buford Cox invents the Cox Chipper Chain. 1949: McCulloch Motors Corp. debuts the world&amp;#039;s lightest chain saw, the 25-pound Model 3-25. 1964: Stihl introduces its first antivibration handle, which uses buffer elements to absorb vibrations coming from the engine and chain. Two years later, &amp;quot;Good Vibrations&amp;quot; by the Beach Boys is a No. 1 hit. (It&amp;#039;s not about chain saws.) 1973: Husqvarna creates the automatic chain break\u2014a lever that stops the chain after kickback, literally saving faces 1974: The Texas Chain Saw Massacre is &amp;quot;inspired by a true story&amp;quot; that didn&amp;#039;t involve Texas, chain saws, or massacres.      1980: Husqvarna debuts the 40, which has a crankcase made of lightweight composite materials. In &amp;#039;83 the company introduces the 154, which has multiple plastic parts. 2000: Eminem opens shows wielding a chain saw. But the real Slim Shady is just imitating\u2014the chain is left off. 2011: Canadian Ian Stewart breaks the Guinness World Record when he makes 94 catches while juggling three running chain saws. Stihl&amp;#039;s MSA 160 C-BQ lithium-ion saw debuts; it can run for 35 minutes. You&amp;#039;ve cut a long way, baby. 2011: Stihl&amp;#039;s Wood Boss (pictured) slices, dices, and produces 50 percent fewer emissions. "^^<http://www.w3.org/2001/XMLSchema#string>
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