FIVE MODELS RELATED TO CHIMNEYS, the first, an improved flue piping, copper plated with tin interior signed "Gustave Burkhardt" (Patent office label missing); the second, an improved chimney cap, constructed of black-painted tin (Patent offfice label missing); the third, an improved chimney vent, constructed of black-painted tin on a wooden red-painted stand (Patent office label missing); the fourth, an improved spark arrester, constructed of black-painted tin (Patent office label missing); the fifth, an improved chimney cap with exhaust escapes, (Patent office label missing)--11in. high, 12in. high, 9in. high, 7in. high, 13in. high (5)