DESCRIPTION

Of

THE GAS-LIGHT APPARATUS.

PLATE I.

Exhibits a. perspective view of a gas-light appara-tus,* for lighting factories, or small districts ofhouses. It consists of the following parts: whichmay be considered separately.

Fig . I. The Retort Furnace, for distilling thecoals. It is built of brick-work. The bricks whichare exposed to the immediate action of the fire,are Welch lumps, or fire-bricks; they are bedded inin clay, or Windsor loam.

Fig. 2. The Tar Cistern, to collect the coal-tar>and other condensible products obtained during thedistillation of the coals. It is a cast-iron hollowcylinder, closed at the top with a cast-iron cover,Which has a very small hole to allow' the air to escapeas the liquid enters into the vessel.

This apparatus was erected by Mr. Clegg, and is now iqaction at Mr. Ackerman’s establishment, in this metropolis.