Devices such as a "life-preserving" coffin
refers to a container that is equipped with a
signaling device where any motion is detected through two mechanisms: a
ring slipped around the occupant’s finger and a metal head plate. By fitting
the typical hinged lid with a series of levers and springs, which activate via
motion-detecting devices in the coffin, ultimately releasing the latch which were
connected by wires to the coffin’s opening mechanism, with the slightest movement
triggering the lid catch. The life-preserving coffin was a
special burial casket which purpose is to was allow those mistakenly
buried alive to safely get out. It is designed by Christian Henry Eisenbrandt
in 1843. This special burial casket also features a mesh in its lid which would
supposedly provide a limited supply of air post-burial.
