Humanities › History & Culture Biography of Virgie Ammons, Inventor of the Damper Tool Share Flipboard Email Print Pexels / Pixabay History & Culture Inventions Famous Inventors Famous Inventions Patents & Trademarks Invention Timelines Computers & The Internet American History African American History African History Ancient History and Culture Asian History European History Genealogy Latin American History Medieval & Renaissance History Military History The 20th Century Women's History View More By Mary Bellis Inventions Expert Mary Bellis covered inventions and inventors for ThoughtCo for 18 years. She is known for her independent films and documentaries, including one about Alexander Graham Bell. our editorial process Mary Bellis Updated January 14, 2020 Virgie Ammons was an inventor and woman of color who invented a device for dampening fireplaces. She received a patent for a fireplace damper actuating tool on September 30, 1975. Little is known about the life of Virgie Ammons. One source says she was born on December 29, 1908, in Gaithersburg, Maryland and died on July 12, 2000. She lived in West Virginia for most of her life. Fast Facts: Virgie Ammons Known For: InventorBorn: December 29, 1908 in Gaithersburg, MarylandDied: July 12, 2000 Early Life Ammons filed her patent on August 6, 1974. At this time, she was living in Eglon, West Virginia. There is no information to be found about her education, training, or profession. One unverified source says she was a self-employed caretaker and a practicing Muslim who attended services in Temple Hills. Fireplace Damper Actuating Tool A fireplace damper actuating tool is used to open and close the damper on a fireplace. It keeps the damper from opening or fluttering in the wind. If you have a fireplace or stove, you may be familiar with the sound of a fluttering damper. A damper is an adjustable plate that fits in the flue of a stove or the chimney of a fireplace. It helps control the draft into the stove or fireplace. Dampers can be a plate that slides across the air opening or fixed in place in the pipe or flue and turned, so the angle allows more or less airflow. In the days when cooking was done on a stove that was powered by burning wood or coal, adjusting the flue was a way of controlling the temperature. Virgie Ammons may be have been familiar with these stoves, given her date of birth. She may also have lived in an area where electric or gas stoves were not common until later in her life. We have no details as to what her inspiration was for the fireplace damper actuating tool. With a fireplace, opening the damper allows more air to be drawn into the fireplace from the room and convey the heat up the chimney. More airflow can often result in more flames, but also in losing more heat rather than warming the room. Keeping the Damper Closed The patent abstract says Ammons' damper actuating tool addressed the problem of fireplace dampers that flutter and make noise when gusty winds affected the chimney. Some dampers do not remain fully shut because they have to be light enough in weight so the operating lever can open them easily. This makes small differences in air pressure between the room and the upper chimney. She was concerned that even a slightly open damper could cause a significant loss of heat in winter, and could even result in loss of coolness in summer. Both would be a waste of energy. Her actuating tool allowed the damper to be closed and held closed. She noted that when not in use, the tool could be stored next to the fireplace. No information was found as to whether her tool was manufactured and marketed.