No. 29.
GLOVER AND CAIL LAMP.
Presented by Cuthbert Berkeley.
Made by Cail, Newcastle upon Tyne.
CONSTRUCTION.
Gauze. 28 mesh Copper with 1 ins. cap.
Chimney. 2 ins high, tapering from 1? to ? ins. diameter.
Glasses. There are two concentric glasses held in place between the
lower and middle rings, with gauze over and below them.
Lock. Screw.
Burner. 1/4" round wick
Air Inlet.. Through the holes in the middle ring, through the horizontal gauze over the glasses, down between the glasses, through the bottom horizontal gauze to the flame.
HISTORICAL NOTE.
This was patented by Dr. Glover and J. Cail in 1852. The gauze and chimney are somewhat like the Mueseler and Boty types. The patent covered the method of air inlet, the idea being to separate the incoming air and the flame by a glass so as to get improved ventilation, steadiness of flame and better candle power. The chimney further prevents the entry of air from the gauze, the inside of the lamp being for rising air currents only.