IMPROVEMENTS IN REMOVING IMPURITIES FROM COAL GAS FOR THE PURPOSES OF LIGHT
Year: 1843

page_text: WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Twenty-sixth day of January, in the sixth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said Henry
Phillips, Her especial licence, full power, sole privilege and authority, that I,
the said Henry Phillips, my exors, admors, and assigns, or such others as
I, the said Henry Phillips, my exors, adiñors, or assigns, should at any time
agree with, and no others, from time to time and at all times during the
term of years therein expressed, should and lawfully might make, use, exercise,
and vend, within England, Wales, and the Town of Berwick-upon-Tweed, my
Invention of "IMPROVEMENTS IN REMOVING IMPURITIES FROM COAL GAS FOR THE
PURPOSES OF LIGHT;" in which said Letters Patent is contained a proviso that
I, the said Henry Phillips, shall cause a particular description of the nature
of my said Invention, and in what manner the same is to be performed, to be
inrolled in Her said Majesty's High Court of Chancery within six calendar
months next and immediately after the date of the said in part recited Letters

page_text: Patent, as in and by the same, reference being thereunto had, will more fully
and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Henry Phillips, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, that is to say :-
My Invention consists of applying the ammonia in ammoniacal liquor when
rendered caustic by lime to the purpose of of separating impurities from coal
gas contained therein; and in order that my Invention may be fully under-
stood, and readily performed, I will describe the means pursued by me.
I take the ammoniacal liquor of gasworks, which is deposited by means of
the condensing vessel, likewise the liquor discharged from the water washing
vessels, such condensing and water washing vessels, forming part of the appa-
ratus in use in gasworks, are therefore well known. These liquors, either
mixed together or separate, I put. into the vessels known in gasworks as lime
was vessels, and add thereto as much recently slaked lime as will render
the mixture of the consistency of cream of lime, and I cause the stream of
gas to pass through such mixture, kept in agitation in such vessels by the
means now adopted in the lime washing process, for the purpose of purifying
the gas, and as the materials become no longer effective for purifying gas,
which is ascertained by the ordinary tests, I withdraw the mixture, and
recharge the vessels with ammoniacal liquors and lime, as before described.
This process of purifying the gas may be conducted in one or more vessels,
varying as to the use of one vessel or more in different gasworks, according to
the size of such works, and the most convenient method under local circum-
stances of using the mixture.
I would here remark that I do not claim the rendering the ammonia in
ammoniacal liquors caustic by the application of lime. But what I claim is
the mode of purifying gas by applying ammoniacal liquors in which the
ammonia is rendered caustic by lime to the separating impurities from the
gas obtained in the distillation of coal.
In witness whereof, I, the said Henry Phillips, have hereunto set my
hand and seal, this Twenty-fifth day of May, in the year of our Lord
One thousand eight hundred and forty three.
H (L.S.) PHILLIPS. 3.

page_text: AND BE IT REMEMBERED, that on the Twenty-fifth day of May, in
the year of our Lord 1843, the aforesaid Henry Phillips came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Enrolled the Twenty-sixth day of July, in the year of our Lord One
thouses
امنم
Enrolled the Twenty-sixth day of July, in the year of our Lord One
thousand eight hundred and forty three.