IMPROVE- MENTS IN APPARATUS FOR REGULATING THE FLOW OF FLUIDS
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ACHILLE
ELIE JOSEPH SOULAS, of George Yard, Lombard Street, in the City of London,'
Merchant, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twenty-second day of March, in the fourth year of 'Her'
reign, did, for Herself, Her heirs and successors, give and grant unto me; the
said Achille Elie Joseph Soulas, Her especial licence, full power, sole privilege
and authority, that I, the said Achille Elie Joseph Soulas, my exors, adñors,.
and assigns, or such others as I, the said Achille Elie Joseph Soulas,
my exors, admors, 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, the Invention of "IMPROVE-
MENTS IN APPARATUS FOR REGULATING THE FLOW OF FLUIDS," communicated
to me by a certain Foreigner residing abroad; in which said Letters Patent.

page_text: is contained a proviso that I, the said Achille Elie Joseph Soulas, 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 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
Achille Elie Joseph Soulas, do hereby declare the nature of the said Inven-
tion, and the manner in which the same is to be performed, is particularly
described and ascertained in and by the following description thereof, reference
being had to the -Drawings hereunto annexed,- and to the figures marked
thereon (that-is-to-say) :-
.
.
The Invention relates to modes of regulating the flow of fluids, and especially
that of gas, for the purpose of lighting or conveying a light. The flow of gas
may be regulated by the means afterwards described:
The first mode is composed of a disc placed within a cylinder, leaving a
space for the passage of the; gas. This space and the weight of the disc are so
regulated that the disc rises when the pressure exceeds the one required. In
the centre of this disc is fixed a rod which, rising therewith, renders narrower
the orifice through which the gas passes in proportion to its height, so that the
opening being in an inverse ratio to the pressure, an equilibrium is established,
and the flow becomes uniform or regular. Several modes of rendering the
opening narrower may be adopted; thus, the rod.may be of a conical form, and
move in a circular ring, as shewn at Figure 1, or it may be terminated by a
small disc moving in a conical canal, see Figure.2. This canal may also be
cylindrical, closed at its basis, and allowing the gas-to, penetrate by lateral
openings, the height of which diminishes in proportion to the elevation of the
small disc. If too great a pressure upon the small disc were apprehended,.a.
chain might be suspended over the large disc, in order to increase its weight in,
proportion as it rises, as shewn at Figure 3.
i
In witness whereof, I, the said Achille Elie Joseph Soulas, have hereunto
hand and seal, this Twenty-second day of September, in the
-year of our Lord One-thousand-eight hundred and forty-one:
set
my
A. SOULAS. (L.B.)

page_text: AND BE IT REMEMBERED, that on the Twenty-second day of Sep-
tember, in the year of our Lord 1841, the aforesaid Achille Elie Joseph
Soulas came before our said Lady the Queen in Her Chancery, and acknow-
ledged the Specification aforesaid, 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.
Inrolled the Twenty-second day of September, in the year of our Lord
One thousand eight hundred and forty-one.