The gas passes, as in the non-automatic
plant, through a purifier _D_ to the service-pipes. Taps _W_
are provided for cutting off the flow of water to either of the
generators during recharging and an overflow pipe _h_ serves to
convey the water to the second generator as soon as the carbide in the
first is exhausted. A sludge-cook _G_ is put at the base of each
generator.
[Illustration: FIG. 61.--AUTOMATIC, WATER-TO-CARBIDE GENERATING PLANT OF
THE STANDARD ACETYLENE CO.]
(3) Non-automatic; water-to-carbide; contact, superposed-trays.
This apparatus resembles the preceding except that the supply of water to
the generators is controlled by hand through the taps _W_, the
control valve _U_ being omitted, and the gasholder _C_ being a
storage holder of sufficient dimensions to contain the whole of the
acetylene evolved from one charging.
_Maker_: THORN AND HODDLE ACETYLENE CO., 151 VICTORIA STREET, S.W.
_Type_: Automatic; water-to-carbide; "drawer."
The "Incanto" generating plant made by this firm consists of a rising
bell gasholder which acts mainly on an equaliser. The fall of the bell
depresses a ball valve immersed in the tank, and so allows water to flow
from the tank past an outside tap, which is closed only during
recharging, to a generating chamber.
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