Gas-Engines and Producer-Gas Plants / A Practice Treatise Setting Forth the Principles of Gas-Engines and Producer Design, the Selection and Installation of an Engine, Conditions of Perfect Operation, Producer-Gas Engines and Their Possibilities, the Care of Gas-Engines and Producer-Gas Plants, with a Chapter on Volatile Hydrocarbon and Oil Engines

by Rodolphe Edgard Mathot

in the spaces between these projections are thus carried into the ash-pit, and those which adhere to the metal are scraped away by a metallic comb fastened to the lower part of the apparatus. The "Phœnix" generator (Fig. 105) is fitted with a grate having a mechanical cleaning device, worked by a lever from the outside.

Fig. 104.—Bénier producer.

Fig. 105.—Phœnix producer.

Ash-Pit.—The ash-pits are exposed to the destructive

effects of heat and moisture, and should preferably be constructed of cast-iron, since sheet-steel is liable to corrode quickly.

Fig. 106.—Otto Deutz producer.

In most apparatus the ash-pit is hermetically sealed, and the air for supporting combustion enters below the