Figures, four new inventions by Isaac de la Chaumette Four small drawings of de la Chaumette's inventions: an iron plate or flap (for a chimney) moveable by the pressure of air, a cylinder with ten or 12 circles which might serve as a toothpick case, a candlestick which in turning makes the candle rise and cleans the inside of the socket and a plate at the butt end of a gun which being laid to the breast causes a spying glass to rise up. 1728