IMPROVEMENTS IN COCKS OR VALVES FOR THE DISCHARGE OF AERATED LIQUIDS
Year: 1872

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields,
in the County of Middlesex, Gentleman, for the Invention of
" IMPROVEMENTS IN COCKS OR VALVES FOR THE DISCHARGE OF AERATED
LIQUIDS." -A communication from abroad by Jean Marie Durafort,
of Paris, in the Republic of France.
Sealed the 17th October 1872, and dated the 16th May 1872.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition, on
the 16th May 1872.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County
3 of Middlesex, Gentleman, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN COCKS OR VALVES FOR THE DISCHARGE OF
AERATED LIQUIDS," a communication to me from abroad by Jean Marie
Durafort, of Paris, in the Republic of France, to be as follows:-
This Invention relates to a peculiar construction and arrangement of
cock or valve which the Inventor terms the "siphon moderateur" to be

page_text: applied to "siphons" or other receptacles of aerated liquids, whereby
the violent disturbance of the liquid as it is being drawn into the glass
or vessel intended to receive it is obviated, a greater quantity of the gas
is retained in the liquid, and the after drip from the mouth of the cock
is avoided.
The essential feature of this Invention consists in the formation of a
special chamber or cavity in the body of the cock or valve, such chamber
or cavity being situate above or beyond the orifice which is closed by
the valve, whether such valve be made to open upwards with the pres-
sure, or downwards against the pressure inside the "siphon" or other
closed receptacle. In conjunction with this special chamber a delivery
spout or nozzle of larger bore than usual is employed, so that the liquid
may be less restrained during its issue from the vessel, and hence it will
flow with less violence into the glass.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Henry Johnson in the Great Seal Patent
Office on the 13th November 1872.
'
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Mid-
dlesex, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of May, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said John Henry Johnson, Her special license
that I, the said John Henry Johnson, my executors, administrators,
and assigns, or such others as I, the said John Henry Johnson, my
executors, administrators, or assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IM-
PROVEMENTS IN COCKS OR VALVES FOR THE DISCHARGE OF AERATED LIQUIDS,"
a communication from abroad by Jean Marie Durafort, of Paris, in

page_text: orifice of the syphon, and to admit of its subsequently flowing freely
without violence or splashing into the glass intended for its reception.
In order to regulate the efflux of the liquid the valve is provided at
its centre with a small conical rod, which leaves a larger passage in pro-
portion as it is raised, and the diameter of the conduit or discharge
mouth is so calculated that the aerated liquid may flow out as it arrives
in the chamber above the valve, which chamber can never be completely
filled by the liquid, as that would be an obstacle to the attainment of the
advantages sought to be realized.
And in order that the said Invention may be fully understood I
shall now proceed more particularly to describe the same, and for that
purpose shall refer to the several Figures on the annexed Sheet of
Drawings, the same letters of reference indicating corresponding parts in
all the Figures.
Figure 1 of the Drawings represents a syphon having a large lever,.
such syphon being provided with a chamber B disposed above the
valve A, which valve acts downwards to close the outlet orifice for the
liquid contained in the vessel, and with a discharge mouth C admitting
of the ready efflux of the liquid.
Figure 2 represents a short lever or piston syphon provided with a
chamber B situate above the valve A, which valve acts upwards to close
the outlet orifice for the liquid, and with a large discharge mouth C.
Figure 3 represents a cock which may be placed either horizontally or
vertically by changing the angle of the mouth, and the internal arrange-
ments of which are the same as in the syphons herein-before described.
By these improvements the force with which the aerated liquid leaves
the syphon or cock is moderated or diminished, and the splashing or
spilling of that contained in the glass is prevented, whilst a larger
quantity of gas is also retained in the aerated beverages, its evaporation
being prevented by a free and moderated flow of the liquid.
Having now described and particularly ascertained the nature of the
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe in conclusion that what I consider to
be novel and original, and therefore claim as the Invention secured to
me by the herein-before in part recited Letters Patent is, the construction
and use of a syphon or cock for aerated beverages provided with an

page_text: internal chamber above the valve in combination with a discharge mouth
having a larger aperture than has heretofore been used in such cocks,
substantially as and for the purposes herein-before described.
In witness whereof, I, the said John Henry Johnson, have to
this my Specification set my hand and seal, this Twelfth day of
November One thousand eight hundred and seventy-two.
J. HENRY JOHNSON. (L.s.)