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A NEW THERMO-REGULATOR.
In the thermo-regulators which have been constructed heretofore, the
heat has been regulated by the variation in the inflow of gas to the
heating flame. The apparatus described below, and shown in the
accompanying cut, taken from the _Zeitschrift fur Instrumentenkunde_,
operates on an entirely different principle. The distillation and
condensation process of a fluid heated to the boiling point in the
vessel, A, is as follows:
[Illustration]
The steam passes first through the pipes, _a_ and _c_, into the
serpentine tube, where it is condensed, and then flows through the
tubes, _d_ and _b_, back into the vessel, A, if the cock, _r_, is
closed, but if the said cock is open, it flows into the receptacle, K.
When the liquid begins to boil the steam passes freely through the
tubes, _d_ and _b_, part passing through the tube, _f_, out into the
air, and the other part passing through the open cock, _r_, to the
receptacle, K; but the condensed liquid soon closes these passages to
the steam. At _h_ is an opening for a thermometer, _t_, and through
this opening the liquid can be poured into the vessel, A. If the cock,
_r_, is kept closed, the volume of liquid in the vessel, A, cannot be
diminished, and the bath, B, must take the constant and uniform
temperature of the steam in the vessel, A, as the vessel, B, is heated
evenly on all sides.
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