Improvements in Apparatus for Generating Carbonic Acid Gas.
Year: 1885

page_text: Improvements in Apparatus for Generating Carbonic Acid Gas.
We, JOHN GOLDIE CHAPMAN of 91 Church Street Birkenhead Merchant and
Engineer and ROBERT FOOTE of 40 and 42 Brownlow Street, Liverpool, Mineral
Water Manufacturer do hereby declare the nature of our invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention relates chiefly to that class of machines for generating carbonic
acid gas to be employed in the manufacture of aerated waters.
In the drawing a perspective view of the improved apparatus is shown.
A is the main vessel in which the gas is generated B a second or subsidiary
vessel in which whiting or its equivalent is mixed, C a chamber of glass through
which the gas passes for the purpose of being purified or washed by being passed
through water.
The body of the generator A is preferably made of cast iron lined
internally with lead, and is supported on the framework on legs A¹.
A horizontal shaft a passes through the lower portion of the generator A, and
upon this within the generator is an agitator whose blades are made of such a
form that in revolving they will follow the contour of the bottom of the generator,
and thus cause complete agitation of its contents. On the end of the shaft a
outside the generator is a bevil wheel a¹ gearing with a similar wheel k upon a
vertical shaft K projecting from the mixing vessel B. An agitator within the
vessel B is fixed to this shaft also, so as to agitate the whiting when required. The
wheels a¹ and k may be disconnected by means of the device M or its equivalent,
so that the two agitators may be worked independently. The whiting vessel B is
connected with the generator A, the passage being controlled by a suitable valve
(not shown in the drawing) which is worked by a lever L. The inlet to the
generator A from the vessel B is placed at the side as shown in preference to
either the top or bottom.
The glass washer or purifier C is connected by a pipe O with the top of the
generator, which is provided with the usual acid inlet D, safety valve F and
valve N at the bottom of the generator for the discharge of the refuse or spent
whiting etcetera. Suitable levers are connected with the valves where necessary.
The washer is a glass vessel, of cylindrical or other suitable shape having its ends
closed by metal discs C¹ which are held together by iron rods and screw nuts.
Through the top disc the gas inlet pipe O enters and passes down to within a short
distance of the bottom disc, being perforated towards its extremity to allow of the
gas being broken up in its exit. The discharge pipe P enters through the lower
disc, and passes upwards a short distance above the level of the water or other
liquor in the washer. Thus the gas in passing through the purifier has to circulate
from the bottom to the top of the water. The discs are also provided with suitable
cocks or plugs for cleansing purposes.
A grating B¹ is fitted inside the whiting vessel, for the purpose of preventing
large stones passing into the vessel, to assist the breaking up of the lumps and the
like. The details of the apparatus may however be varied,

page_text: We JOHN GOLDIE CHAPMAN of 91 Church Street, Birkenhead, Merchant and
Engineer, and ROBERT FOOTE, of 40 and 42 Brownlow Street, Liverpool, Mineral
Water Manufacturer, do hereby declare the nature of this invention to be as
follows:-
را
The apparatus consists of a main vessel in which the gas is generated, a
subsidiary vessel to contain the whiting or equivalent, and a glass washer.
+
A shaft passes through the lower portion of the generator 'and upon this is an
agitator; on the end of the shaft outside the generator is a bevil wheel gearing with
a similar wheel upon a vertical shaft projecting from the whiting vessel-an agitator
is fixed to this shaft also so as to agitate the whiting when required. The wheels
may be disconnected so that the two agitators may be worked independently-The
whiting vessel is connected with the generator the passage being controlled by a
suitable valve:
'
The washer is connected with the top of the generator which is provided with
the usual water and acid inlets, safety valve, draw off valve &. Suitable levers
are connected with all the valves.
.
A grating is fitted inside the whiting vessel for the purpose of preventing large
stones passing into the vessel to assist the breaking up of the lumps, and the like.
The details of this apparatus may be varied.
J
Under the old system a good deal of acid was frequently wasted by putting fresh
acid' upon
"dead" whiting, but by having the washer in connection with the
generator according to our plan the attendant can see at once whether any gas, is
produced when he lets in the acid and can then either stop the supply of acid or
add more whiting. Much time also is saved by having a supply of whiting
always ready to be shot into the generator the process being thereby rendered
practically continuous.
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page_text: Under the old system a good deal of acid was frequently wasted by putting fresh
acid upon
"dead" whiting, but by having the washer in connection with the
generator, according to our plan, the attendant can see at once whether any gas is
produced when he lets in the acid, and can then either stop the supply of acid or
add more whiting. Much time also is saved by having a supply of whiting always
ready to be shot into the generator, the process being thereby rendered practically
continuous.
Having now particularly described and ascertained the nature of the Baid
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. An apparatus for generating carbonic acid gas, having two chambers, the
main one in which the gas is generated, and a second or subsidiary one provided
with a grating, such as B¹ and an agitator by which the whiting is mixed, the two
chambers being connected together by a pipe or connection, preferably at the side
of the generator, controlled by a valve, substantially as and for the purposes
described.
2. An apparatus for generating carbonic acid gas, arranged and constructed,
substantially as described and shown.