<P> In 1995 a modern safety coffin was patented by Fabrizio Caselli . His design included an emergency alarm, intercom system, a torch (flashlight), breathing apparatus, and both a heart monitor and stimulator . </P> <P> Despite the fear of burial while still alive, there are no documented cases of anybody being saved by a safety coffin . It is worth noting that the practice of modern day embalming has, for the most part, eliminated the fear of "premature burial", as no one has ever survived that process once completed . </P> <P> Folk etymology has suggested that perhaps the phrases "saved by the bell", "dead ringer" and "graveyard shift" come from the use of safety coffins in the Victorian era; however, these have been dispelled as urban myth, attributed to a linguistic e-mail hoax Life in the 1500s . The "saved by the bell" expression is actually well established to have come from boxing, where a boxer who is still on their feet but close to being knocked down can be saved from losing by the bell ringing to indicate the end of the round . </P> <P> The 2009 song "The Tale of Solomon Snell" by Duncan Sheik from his album Whisper House tells the story of a man who for his burial gives instructions to be buried in a safety coffin with a bell mechanism attached but ultimately fails to be saved due to the person in charge of listening to the bell getting drunk . </P>

Where does the saying saved by the bell come from
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