DESCRIPTION
OF
THE GAS-LIGHT APPARATUS.
[PLATE I.]
Exhibits a perspective view of a gas-light apparatus,[40] for lighting factories, or small districts of houses. It consists of the following parts: which may be considered separately.
[40] This apparatus was erected by Mr. Clegg, and is now in action at Mr. Ackerman’s establishment, in this metropolis.
[Fig. 1.] The Retort Furnace, for distilling the coals. It is built of brick-work. The bricks which are exposed to the immediate action of the fire, are Welch tumps, or fire-bricks; they are bedded in clay, or Windsor loam.
[Fig. 2.] The Tar Cistern, to collect the coal-tar, and other condensible products obtained during the distillation of the coals. It is a cast-iron hollow cylinder, closed at the top with a cast-iron cover, which has a very small hole to allow the air to escape as the liquid enters into the vessel.
[Fig. 3.] The Lime Machine, for purifying the crude coal-gas, and to render it fit for use. The construction of this machine will be explained in [plate VII]. It is put together of cast-iron plates.