After
exhaustion of the charge the plungers are withdrawn and a freshly charged
cage of carbide inserted ready for lowering into the generating tank.
There is a relief seal _f_ through which gas will blow and escape by
a pipe _g_ to the open should the pressure within the apparatus
exceed the depth of the seal, viz., about 9 inches. There is a syphon pot
_N_ for the collection and withdrawal of condensed water. The sludge
is allowed to accumulate in the bottom of the concrete tank _B_
until it becomes necessary to remove it at intervals of about three
months. Water is added to the tank daily to replace that used up in the
generation of the gas. The gas passes from the storage holder through one
of the pair of purifiers _K_, with water-sealed lids, which are
charged with a chemical preparation for the removal of phosphoretted
hydrogen. This purifying material also acts as a desiccating agent. From
the purifiers the gas passes through the meter _L_ to the service-
pipes.
[Illustration: FIG. 28.--KLINGER'S GENERATING PLANT.]
BELGIUM.
_Maker_: SOC. AN. DE L'ACETYLITHE, 65 RUE DU MARCHE, BRUSSELS.
_Type_: Automatic; contact.
The generating apparatus made by this firm uses, instead of ordinary
carbide, a preparation known as "acetylithe," which is carbide treated
specially with mineral oil, glucose and sugar.
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