IMPROVE. MENTS IN THE MANUFACTURE OF GAS
Year: 1848

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
WATSON, Merchant, and EDWARD CART, Gentleman, both of Hull, send;
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of
Great Britain and Ireland, bearing date at Westminster, the Fourteenth
day of February, One thousand eight hundred and forty-eight, in the tenth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said John Watson and Edward Cart, our exors, adiñors,
and assigns, Her especial license, full power, sole privilege and authority,
that we, the said, John Watson and Edward Cart, our exors, admors,
and assigns, or such others as we, the said John Watson and Edward Cart,
our 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, our Invention of "IMPROVE.
MENTS IN THE MANUFACTURE OF GAS;" in which said Letters Patent is con-
tained a proviso that we, the said John Watson and Edward Cart, or one
of us, should cause a particular description of the nature of our said. Invention,
and the manner in which the same is, to be performed, by an instrument
in writing under our hands and seals, or under the hand and seal of one of us,
to be inrolled in. Her said Majesty's High Court of Chancery within six,

page_text: 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, we, the said
John Watson and Edward Cart, do hereby declare that the nature of our
Invention, and the manner in which the same is to be performed, are fully
described and ascertained in and by the following statement thereof, reference
being had to the Drawing hereunto annexed, and to the figures and letters
marked thereon. that is to say..
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, we, the said
John Watson and Edward Cart, do hereby declare that the nature of our
Invention, and the manner in which the same is to be performed, are fully
described and ascertained in and by the following statement thereof, reference
being had to the Drawing hereunto annexed, and to. the figures and letters
marked thereon; that is to say.
DESCRIPTION OF THE DRAWING.
Figure 1 shews a section of the apparatus combined according to our
Invention.
Figure 2 is a front elevation of the stove separately.
Figure 3 an end section of stove, gas holder, and feed pipe.
Figure 4 shews the stove, with back end of the retort and syphon box.
Figure 5 shews the mouth end of retort, and the gas holder and other parts.
The object of the Invention is to combine apparatus with an ordinary hot-
air stove for generating gas in proportion to the supply required, and so to
arrange the parts that the supply of material to the retort will be cut off by
the filling of the gas holder, so that if the supply of gas from the retort be not
consumed the further feed to the retort will be cut off. We would remark,
that although we believe the arrangement of apparatus shewn to be the most
convenient for carrying out our Invention, the details may be varied, so long
as the peculiar character above explained be retained. The same letters of
reference, are used in each of the Figures to indicate. the same parts. a is an
ordinary hot-air stove, with the retort set therein; the retort may be set in brick-
work or masonry in lieu of the iron stove; b, apertures whence the air enters
and which can be stopped at pleasure, by turning the handle C, which moves a
slide plate. d, furnace door; E, ash door; F, feed pipe to conduct the liquid for
gas manufacture from the holder g to the retort i. k, tap opened and shut at
the commencement and conclusion of the process. I self-acting tap connected
with the gas holder by means of the two rods m and n, and which are moved
together at the joint o. The volume of gas required for combustion being
supported by a quantity of the liquid flowing into the retort, the proportion is
regulated by the tap 1, in exact ratio with the current consumption, and
whatever decrease or increase is made in the number of lights during the
apparatus being in operation causes the gas holder to ascend or descend until
the self-acting tap 1 admits only the quantity of liquid to the retort commen-

page_text: surate with the flames burning. p, washer or purifier; 9, worm pipe fixed in a
cylindrical vessel containing cold water for condensation. The worm pipe
conveys the gas from the washer or purifier, and terminates with a bend which
dips into the water contained in the cylindrical vessel; the gas having forced
itself through the surface of this water rises into the gas holder whose sides dip
into water contained in the tank surrounding the cylindrical vessel wherein the
worm pipe is fixed; thus it will be perceived there are two cylindrical vessels,
one, the larger, as a tank for the gas holder, and another, the smaller, to
contain water for condensation only. The heat used in generating gas may
be employed to the ordinary purpose of heating air in addition to generating
gas, or it may be applied to other uses.
Having thus described the nature of our Invention, we would have it
understood that we do not claim the separate parts of the apparatus. But.
what we claim is the combining parts into a self-acting gas apparatus as herein
described.
In witness whereof, I, the said Edward Cart, have hereunto set my
hand and seal, this Tenth day of August, in the year of our Lord
One thousand eight hundred and forty-eight.