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'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, "Good Vibrations" by the Beach Boys is a No. 1 hit. (It's not about chain saws.)
1973: Husqvarna creates the automatic chain break?a lever that stops the chain after kickback, literally saving faces
1974: The Texas Chain Saw Massacre is "inspired by a true story" that didn't involve Texas, chain saws, or massacres.
1980: Husqvarna debuts the 40, which has a crankcase made of lightweight composite materials. In '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?the 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's MSA 160 C-BQ lithium-ion saw debuts; it can run for 35 minutes. You've cut a long way, baby.
2011: Stihl's Wood Boss (pictured) slices, dices, and produces 50 percent fewer emissions.
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