A Practical Treatise on Gas-light / Exhibiting a Summary Description of the Apparatus and Machinery Best Calculated for Illuminating Streets, Houses, and Manufactories, with Carburetted Hydrogen, or Coal-Gas, with Remarks on the Utility, Safety, and General Nature of this new Branch of Civil Economy.

by Friedrich Christian Accum

[Fig. 4]. A Pedestal Cockspur Lamp. a, the stop-cock and gas-pipe.

[Fig. 5]. A fancy bracket Cockspur Lamp, intended merely to show that the coal-gas, as it passes to the burner, is perfectly devoid of colour, and invisible. a is a glass vessel furnished at its orifice with a brass cap, c, and perforated ball, out of which the gas-flame proceeds. b, the pipe which conveys the gas into the glass vessel, a.

[Fig. 6]. A Bracket Argand Lamp. a and b, the gas pipe communicating with the burner.

[Fig. 7 and 8]. A Horizontal Bracket Lamp. a, the gas pipe, supposed to be concealed in the ceiling. b, the communicating pipe, which, together with c, branches out at right angles at d d. e e, are the burners of the lamp.

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[Plate V]. [fig. 1]. A Candelabrum, into which the gas-pipe ascends from the floor of the apartment, the lateral branches communicating with the central tube.

[Fig. 2]. An Arabesque Chandelier. The gas enters from the ceiling of the room into the rope-shaped pipe, a, from which it proceeds through one of the arched ribs, b b, into the horizontal hoop, or pipe, c.