There is a sludge-cock on each
generator. The gas passes from the equalising gasholder through a
purifier, for which the material ordinarily supplied is puratylene.
[Illustration: FIG. 52.--"MOSS TYPE A" GENERATOR.]
The "Moss Type B" generator is smaller and more compact than "Type A." It
has ordinarily only two generating chambers, and the displacement water
controlling chamber is replaced by a bell governor, the bell of which is
balanced through a lever and chains by a weight suspended over the bell
of the equalising gasholder, which on rising supports this counter-weight
and so allows the governor bell to fall, thereby cutting off the flow of
water to the generating chambers.
[Illustration: FIG 53.--"MOSS TYPE B" GENERATOR.]
The "Moss Type C" generator is smaller than either "Type A" or "B," and
contains only one generating chamber, which is suspended in a pocket in
the crown of the equalising gasholder. Water enters through a hole near
the top of the bucket of the generating chamber, when it descends with
the holder through the withdrawal of gas from the latter.
[Illustration: FIG 54.--"MOSS TYPE C" GENERATOR.]
(2) Semi-automatic; water-to-carbide; superposed trays.
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