Alexander Miles of Duluth, Minnesota
patented an electric elevator (U.S. pat#371,207) on October 11, 1887 (see
patent below). Alexander Miles did not invent the first elevator, however,
his design was very important. Alexander Miles improved the method of the
opening and closing of elevator doors; and he improved the closing of the
opening to the elevator shaft when an elevator was not on that floor. Alexander
Miles created an automatic mechanism that closed access to the shaft. At
that time elevator patrons or operators were often required to manually
shut a door to cutoff access to the elevator shaft. People would forget
to close the shaft door and as a result there were accidents with people
falling down the elevator shafts.
Miles - U.S. pat#371,207
with > The
History of the Elevator.