Archereau's regulator - A drawing of a machine with a pendulum on it
Thomas Wright, London, devised the first apparatus (1845) in which the adjustment of the carbons is brought about automatically. W. C. Staite used the electric current for the regulation of the carbons in 1848... More
Edison's lamp fitting - A drawing of an old type of machine
(text continues from fig. 431). The free ends (Fig. 432) of the platinum wires are connected with the copper sockets D and E, which are insulated from each other by plaster of Paris, F and C are copper pieces ... More
Edison's lamp - A drawing of a light bulb on a piece of paper
The first glow lamp which T. A. Edison constructed had platinum wire, similar to the one devised by Changy. Edison examined the properties of many organic and inorganic substances, with a view of finding the b... More
Foucault's regulator
Foucault constructed in 1858 the apparatus shown in Fig. 426, taken from La Lumière Électrique. The two carbons a and b are arranged horizontally, fixed upon the rollers c c′. The two springs R R′ tend to move... More
Jablochkoff's candle - A lamp with a crown on top of it
The candle by Jablochkoff consists of two parallel carbon rods a b (Fig. 499), which are separated from each other by a layer of plaster of Paris ; the lower portions of the carbons have short brass tubes fast... More
The Lane-Fox lamp - A drawing of a rocket and a rocket ship
Two wires e e, which are connected with the mercury tubes f, are attached to the metal springs c, which are the carbon holders. These springs are regulated by the slide d consisting of insulating material. The... More
The Swan lamp - A drawing of a light bulb with a wire attached to it
Swan has done much towards the perfection of glow lamps. Long before Edison, he tried to obtain more durable carbon filaments. Too little attention had been paid by other experimenters to the exhaustion of the... More