m.b.H., AUGSBURG.
_Type_: Non-automatic; carbide-to-water.
The "Knappich" generating plant made by this firm embodies a generating
tank, one-half of which is closed, and the other half of which is open at
the top, containing water. A small drum containing carbide is attached by
a clamp to the end of a lever which projects above the open half of the
tank. The lever is fastened to a horizontal spindle which is turned
through 180 deg. by means of a counter-weighted lever handle. The carbide
container is thus carried into the water within the closed half of the
tank, and is opened automatically in transit. The carbide is thus exposed
to the water and the evolved gas passes through a pipe from the top of
the generating tank to a washer acting on the Livesey principle, and
thence to a storage gasholder. The use of closed carbide containers in
charging is intended to preclude the introduction of air into the
generator, and the evolution and escape of gas to the air while the
carbide is being introduced. Natural circulation of the water in the
generating tank is encouraged with a view to the dissipation of heat and
washing of the evolved gas. From the gasholder the gas passes in a
downward direction through two purifiers arranged in series, charged with
a material supplied under the proprietary name of "Carburylen.
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