To power the rotating sign, a one
horsepower motor drove a 15-to-1
reduction gear with a double sprocket to
two chains around a 12-foot diameter bull
wheel. The sign turned at 1.5 revolutions
per minute. The revolving mechanism was
controlled by an anemometer to prevent
overloading during high winds. “When the
wind blew, the sign would turn into the
wind and the motor would stop,” Guyette
says. “The wind pressure on that sign was
amazing; it was three stories high.”
The resulting sign, perched more than
220 feet ab ݙH H