Inside the fireplace chimney is a device called a "Damper". The damper is opened and closed to allow smoke from the fireplace to be drawn upward out of the house. The "Fireplace Damper Actuating Tool" designed by Ammons allows the damper to be "locked" in the closed position, preventing cold air and dust from blowing down the chimney back into the house."
Unknown
Alexander Miles
Andrew Beard
Augustus Jackson
Benjamin Banneker
Bessie Blount
David Crosthwait
Dr. Daniel H. Williams
Dr. Vivien T. Thomas
Earl Lucas
Elijah McCoy
Fredrick Jones
Garrett A. Morgan
George Carruthers
George E. Alcorn Jr.
George W. Carver
Granville T. Woods
Henry Blair
Jack Johnson