An Improved Exhauster for Poisonous or Corrosive Gases and like Chemical Purposes.
Year: 1898

page_text: Date of Application, 26th Nov., 1898-Accepted, 1st Apr., 1899
COMPLETE SPECIFICATION.
An Improved Exhauster for Poisonous or Corrosive Gases and like
Chemical Purposes.
I JOSEF MÜLLER, 'of 1, Klapperhof, Cologne-on-the-Rhine, in the Empire of
Germany, Gentleman, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
--
This invention relates to mechanism employed in chemical factories, and its
object is to provide an exhauster constructed from glass in such a manner that
the observation of the interior of the exhauster during the exhausting of the
corrosive or other gases can be carried on. By this means any substances carried
by the gases can be observed and any changes visible to the eye which denote
an approaching dangerous reaction may also be observed and risks avoided.
The method of carrying the invention into effect is illustrated in the accom-
panying sheet of drawings as follows:
Figure 1 shows a vertical sectional elevation of the exhauster.
Figure 2 shows a front elevation of the exhauster partly in section.
Figure 3 shows a plan of the same.
The exhauster consists generally of a glass shell a made in two halves and of
such configuration that when bolted together an escape conduit or pipe / is formed
and also a chamber r within which the fan of the exhauster runs. A central
flange a is formed on either half a, and provides the means for bolting or
fastening the halves together after the fan 6 has been placed in position, and
this fan with wings and enclosing chamber, preferably has the form shown in
half section on Figure 2.
On either side of the shell a and about the centre of rotation of the fan,
openings s are arranged and are attached right and left to branches of a forked
pipe or conduit. This forked pipe or conduit runs together and forms one pipe
at z and is there connected to the supply of corrosive or other gas which it is
desired to pump or move. The fan b is uniformly divided with wings or blades b¹,
this structure also being made of glass.
At the lowest point of the conduit a drain cock e is placed so that any steam
condensing within the fan or exhauster may be run off. The fan 6 runs upon
bearings of placed in the manner shown in Figures 2 and 3 on a pedestal or other
uitable erection.
Having now particularly described and ascertained the nature of my said
nvention, and in what manner the same is to be performed, I declare that what
claim is:-
1. An improved exhauster for poisonous and corrosive gases and like chemical
purposes so arranged that the exhausting fan works within a casing made of
transparent glass to permit of observation from the exterior during operation
of the exhauster, and thus in certain cases observe any dangerous approaching
chemical action, and thus render possible avoidance of the same.

page_text: 2. The improved exhauster for poisonous or corrosive gases and like chemical
purposes substantially as hereinbefore described with reference to Figures 1, 2,
and 3.
Dated thi
1000
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham,
Agents.