IMPROVEMENTS IN DRYING AND WEIGHING FIBROUS AND OTHER SUBSTANCES
Year: 1854

page_text: LETTERS PATENT to Moses Poole, of the Avenue Road, Regent's Park,
in the County of Middlesex, for the Invention of "IMPROVEMENTS IN
DRYING AND WEIGHING FIBROUS AND OTHER SUBSTANCES."-A communi-
cation.
Sealed the 17th November 1854, pursuant to an Order of the Lord Chancellor,
PROVISIONAL SPECIFICATION left by the said Moses Poole at the
Office of the Commissioners of Patents, with his Petition, on the 19th
April 1854.
I, MOSES POOLE, of the Avenue Road, Regent's Park, in the County of
Middlesex, do hereby declare the nature of the Invention for "IMPROVE-
MENTS IN DRYING AND WEIGHING FIBROUS AND OTHER SUBSTANCES" to bo ns
follows:-
The object of this Invention is to ascertain the actual dry weight of fibrous
and other substances by weighing a quantity after drying the same, and whilst
the quantity of the substance is still subjected to a dry atmosphere at such a
temperature as will prevent the fibrous or other substance taking up fresh
moisture; and the Invention consists of combining with a weighing machine
or apparatus an enclosed chamber, with valves to regulate and instruments to
indicate the stato of heat. Into such chamber a quantity of the fibres or
substances to be tested is placed, and the weight thereof is ascertained by the

page_text: weighing apparatus or machinery in connection with the chamber; currents of
heated and dry air are then caused to pass into and through the chamber, and
thus are the fibres or substances dried; and then, without removing the same
from the chamber, and whilst the interior of the chamber and the matters
are heated, the dry weight is ascertained by the weighing machinery or
apparatus.
SPECIFICATION in pursuance of the conditions of the Letters Patent and
of the aforesaid Order, filed by the said Moses Poole in the Great Seal
Patent Office on the 18th November 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MOSES
POOLE, of the Avenue Road, Regent's Park, in the County of Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of April, in the year of our Lord
One thousand eight hundred and fifty-four, in the seventeenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Moses Poole, Her special licence that I. the said Moses Poole,
my executors, administrators, and assigns, or such others as I, the said
Moses Poole, my executors, administrators, and 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,
tho Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
DRYING AND WEIGHING FIBROUS AND OTHER SUBSTANCES" (communicated to me
from abroad), upon the condition (amongst other) that I, the said Moses
Poole, by an instrument in writing under my hand and seal, should par-
ticularly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed in the
Great Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Moses Poole, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof (that is to say):-
The object of this Invention is to ascertain the actual dry weight of fibrous
and other substances by weighing a quantity after drying the same, and whilst

page_text: immediately (by the draft of the chimney) a current of hot air passes in tho
direction indicated by the blue arrows, at the same tinio the smoke from the
fuel passes in the direction shown by the red arrows; thus, by the descending
current of hot air on the cylinder E, the specimens are quickly dried. The
valves and I are then closed, the slide in tho cover is opened, and the
weighing is repeated without removing the specimens from the cylinder E;
and in this manner the loss of weight in drying is accurately determined.
Figure 3 is a section, and Figure 4 a plan, of apparatus, as arranged when
many are required in the same establishment.
The heated air is supplied by a tubo A to the common trunk B, from
whence it passes to the apparatus, which consists of four concentric cylinders
C, C, C, C, of which the external cylinder is used only to prevent radiation.
The hot air passes first through the space between the cylinders C' and C",
then, after passing the tube D, in which is the valve r', it passes between tho
cylinders C and C and enters at the top of the cylinder C, from which
.it afterwards escapes into tho common channel F by the passage E, in which
is a valvor. The draft is produced by the chimney H, into which the tubo
G from the trunk F leads. .
When the weighing takes place, the valves 7, 1, aro closed, and the valvo
is opened; the current of air then circulates only in the space between tho
cylinders C and C".
There is also another valvo r, by which the apparatus is cut off from tho
main trunk B when out of use. The apparatus, Figuro 5, differs from that
last described, as the products of combustion circulate in the space between the
cylinders C and C" in place of pure heated air; after having produced their
effect, the smoke and heated air enter together into the common trunk F, and
from thence by the tube G into the chimney II.
The products of combustion enter by the tube A into the reservoir B, and
the heated air is led by the tubo A' into the reservoir B', and they both
circulate in the apparatus, as is shown by the colored arrows, and the currents
are regulated by the valves. The register R in the tube A is closed during
the operation of drying and weighing. Apparatus for heating the air, or for
weighing the fibrous or other substances, or for indicating the heat, lias not
been described, as any ordinary apparatus of this description may be used.
Figure 6 is an apparatus in which gas is used for heating the air, and which will
be readily understood by the following description:-A and A' are reservoirs of
heated air; B, space in which a current of hot air passes; C, the body of the
apparatus; D, the cover; E, E, jets of gas; G, stop-cock; H, passage by

page_text: which the hot air escapes; I, stop-cock for regulating the heat in the com-
partment A; K, a thermometer, the bulb of which enters the passage H;
L, L, valves for regulating the current of air.
Having thus described the nature of the said Invention, and the manner of
performing the same, I would have it understood that I do not claim any of
the parts separately, nor do I confine myself to the precise details; but what I
claim is, the mode of combining apparatus herein described.
In witness whereof, I, the said Moses Poole, have hereunto set my
hand and seal, this Seventeenth day of November, in the year of
our Lord One thousand eight hundred and fifty-four.
Witness,
B. GOBEY,
12, Cursitor Street,
Chancery Lane.
MOSES POOLE. (L..S.)