Improved Venting and Retaining Taps for Drawing Malt or other Liquor from Sealed Vessels.
Year: 1891

page_text: Date of Application, 16th Sept., 1891-Accepted 24th Oct., 1891
COMPLETE SPECIFICATION.
Improved Venting and Retaining Taps for Drawing Malt or other
Liquor from Sealed Vessels.
JAMES BURNETT of Mill Lane, Kilmarnock in the County of Ayr, Engineer,
and GEORGE PAXTON of Richardland Brewery, Kilmarnock in the County of Ayr,
Brewer, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
The object of our invention is to provide improved apparatus for drawing off
malt or other liquors from scaled vessels.
The improved apparatus consists of a tap, having passages, and openings,
arranged in such a manner, that liquor may be drawn, from sealed vessels, without
releasing the gasses, arising from fermentation, or other chemical re-action, and that
also provides, for the admission, of air to the vessel, when that is necessary, to
insure an outflow of liquor.
To effect this purpose, we employ a tap, through the body of which, we make two
passages, parallel to each other, one for the outflow of liquor, and one for the
admission of air.
In the plug of tap, we make two corresponding passages, arranged in such a
manner, that on turning the plug, in its seat, the liquor passage is opened first, and
on turning the plug further in its seat, the air passage is opened.
The liquor passage, is only partly closed, when the air passage is opened.
When the pressure of the gasses, arising from fermentation, or other chemical
reaction, in the vessel is sufficient, to displace the liquor, the plug is turned in its
seat, until the liquor passage is opened, when an outflow takes place.
When however the pressure of gasses, in the vessel is insufficient to displace the
liquor, the plug is turned in its sent, until the air passage is opened, and air is
admitted, in order to insure an outflow of liquor.
In order that our invention, may be properly understood, we append one sheet of
drawings, the different figures on which, show the method of applying our invention,
and the relation of the parts to each other.
Figure 1 is a vertical section of liquor vessel, with tap attached. The internal
tube is provided, in order to avoid the agitation of the liquor, by the ingoing air.
Figure 2 is a vertical section, of the tap, on a larger scale.
Figure 3 is a horizontal section of the tap, on line A B of Fig. 2.
Figure 4 is a horizontal section, of the tap, on line C D of Fig. 2.
The relative position of the passages, will be seen on referring to Figure 2,
Figure 3 and Figure 4.
On turning the plug in its seat, the liquor passage E. E. is opened first, and in
the event of the pressure of the gasses, in the vessel, being greater than the atmo-
spheric pressure, the liquor flows, and the gasses are retained.
Should the pressure, of the gasses in the vessel, be less than the atmospheric
pressure, the plug of tap is turned, until the air passages F. F. come into line, when
air enters at G, and displaces the liquor in the vessel, the liquor passage being only
partly closed, when the air passage is opened.
Having now particularly described, and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is,
The arrangement and combination, of the parts, and passages, of the tap, as
described herein, and shewn on drawings annexed, by which malt or other liquors,

page_text: may be drawn off sealed vessels, without releasing the gasses arising from fermen-
tation, or other chemical reaction, and that also provides for the admission of air,
to the vessel, when that is necessary, to ensure an outflow of liquor.
Dated this 15th day of September 1891.
JAMES BURNETT..
GEORGE PAXTON.