tyrus78
September 30, 2019
September 30, 1975: On this day Virgie Ammons was granted a patent for her invention, the fireplace damper activating tool. This tool prevents cold air and dust from blowing down the chimney and back into the house by allowing the chimney damper to be locked in the closed position. According to her patent abstract, her damper addressed the problem of fireplace dampers that flutter and make noise when gusty...