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Text File  |  1992-09-01  |  342b  |  9 lines
  1. 1811-1861. US engineer who developed a lift
  2. that incorporated a safety device, making it
  3. acceptable for passenger use in the first
  4. skyscrapers. The device, invented 1852,
  5. consisted of vertical ratchets on the sides
  6. of the lift shaft into which spring-loaded
  7. catches would engage and `lock' the lift in
  8. position in the event of cable failure.
  9.