IMPROVEMENTS IN THE PRODUCTION OR COMPOUNDS CONTAINING XYLOIDINE.” THE PRODUCTION OF COMPOUNDS CONTAINING XYIDINE
Year: 1870

page_text: LETTERS PATENT to Daniel Spill, of Hackney Terrace, Hackney, in
the County of Middlesex, for the Invention of "IMPROVEMENTS IN
THE PRODUCTION OR COMPOUNDS CONTAINING XYLOIDINE.”
THE PRODUCTION OF COMPOUNDS CONTAINING XYLOIDINE.”
Sealed the 2nd September 1870, and dated the 16th March 1870.
PROVISIONAL SPECIFICATION left by the said Daniel Spill at the
Office of the Commissioners of Patents, with his Petition, on the
16th March 1870.
I, DANIEL SPILL, of Hackney Terrace, Hackney, in the County of
Middlesex, do hereby declare the nature of the said Invention for "Ir-
PROVEMENTS IN THE PRODUCTION OF COMPOUNDS CONTAINING XYLOIDINE," to be as
follows:-
This Invention relates to improvements in the production of com-
pounds containing xyloidine. In the production of those products
O which are similar to or such as are known as xyloinite or such com-
pounds as contain xyloidine or soluble gun cotton, and which are suit-
able for the covering of telegraph wires or for rolling into sheets, or for
spreading upon fabrics or surfaces for moulding, and for other similar

page_text: purposes, and consists as follows:-I take a solution or paste of xyloidine,
and after it has, by preference, been strained so as to separate solid
impurities I place the solution in a closed or air-tight chamber or
apparatus provided with any suitable mechanical means for mixing or
stirring the contents, the spindle or spindles in connection therewith
being made to pass through stuffing boxes. The said chamber or
apparatus is placed in connection with a condenser and reservoir, so
that the volatile solvents may be condensed and collected, or the said
chamber or apparatus may be placed in connection with an exhausting
or vacuum producing apparatus, so that the air thus passing through
the exhausting apparatus charged with the vapor of or vapors of the
volatile solvents employed will be made to re-enter the closed or air.
tight chamber or apparatus, thus keeping up a continuous circulation,
and thereby causing that portion of the volatile solvent which would in
the former case escape and be lost were the air allowed to escape is thus
retained, reutilized, and economized. To the mixing chamber or apparatus
a temperature of about 212° Fahrenheit is applied, or in some cases a
higher or a lower temperature may be used, such increase of temperature
being dependent on the nature of the solvents employed, and the agitator
and mixing arrangement is then set in motion. As the operation pro-
ceeds the volatile solvent will pass over in vapor and become condensed,
and may be employed for reuse, or otherwise, and the resulting mass
will be found to be in a plastic condition and of a uniform consistency,
which product may be then rolled into sheets, or may be spread upon
surfaces by any well-known means, or it may be pressed or moulded
into forms or otherwise fashioned, as is well understood.
SPECIFICATION in pursuance of the conditions of the Letters Patent;
filed by the said Daniel Spill in the Great Seal Patent Office on
the 16th September 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DANIEL 30
SPILL, of Hackney Terrace, Hackney, in the County of Middlesex,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of March, in the year of

page_text: our Lord One thousand eight hundred and seventy, in the thirty-third
year of Her reign, did, for Herself, Her heirs and successors, give and.
grant unto me, the said Daniel Spill, Her special license that I, tho,
said Daniel Spill, my executors, administrators, and assigns, or such.
others as I, the said Daniel Spill, 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,
sliould 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 "IMPROVEMENTS IN THE PRODUCTION OF;
COMPOUNDS CONTAINING XYLOIDINE,” úpon the condition (amongst others)
that I, the said Daniel Spill, my executors or administrators, by an
instrument in writing under my hand and seal, should particularly;
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 Daniel Spill, do hereby declare
the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by
the following statement :-
This Invention relates to improvements in the production of com-
pounds containing xyloidine. In the production of compounds containing
xyloidinė or of that product which results from the action of a mixture
of nitric and sulphuric acids upon ligneous or vegetable fibres, or
obtained from other sources, it is necessary to employ solvents of the
same, which may be either wholly or in part volatile, and which volatile
solvents during the process of evaporation or of concentration of the
solution or paste are expelled.
Now the object of this Invention is that such evaporation or con.
centration may be facilited, and that the volatilized solvents may be
condensed and be rendered capable of reutilization, and also that the
resulting compounds containing xyloidine may be rendered of more
uniform composition.
:
In carrying out my Invention I take a solution or paste of xyloidine,
prepared. either as described in the Specification of my former Patent,
No. 3102, One thousand eight hundred and sixty-nine, or obtained by
the employment of any other volatile solvent or otherwise, and after.

page_text: may
such solution or paste has by preference been strained so as to separate
any solid impurities therein contained, I either operate upon the same,
or I add thereto such ingredients as may be requisite to produce the
required compound; and I then place the solution or mixture in a
closed or air-tight chamber or apparatus provided with any suitable
mechanical means for mixing or stirring the contents of the same,
the spindle or spindles in connection therewith being made to pass
through stuffing boxes so as to avoid any escaping of the volatile solvent.
The said chamber or apparatus is placed in connection with a condenser
and reservoir, so that the volatile solvents which are given off be
condensed and collected. Or the said chamber or apparatus may be
placed in connection with an exhausting or eurrent producing apparatus,
and be so arranged as that a current of air shall pass through the
apparatus. The air thus passing through the exhausting or current
producing apparatus, and charged with the vapour or vapours of the
volatile solvents employed, will be thus made to re-enter the closed or
air-tight chamber or apparatus, thus keeping up a continuous circulation,
and thereby causing that portion of the volatile solvent which would be
lost were the air allowed to escape to be retained, reutilised, and
economised. To the mixing chamber or apparatus a temperature of
about 212° Fahrenheit may be applied, or in some cases a higher or a
lower temperature may be used, such increase or diminution of tempera-
ture being dependent upon the nature of the solvents employed.
Having charged the apparatus with a solution or paste of xyloidine, or
of those products similar thereto, as herein-before mentioned, with or
without the admixture of other ingredients, the temperature of its
contents may be elevated and the agitator or mixing arrangement is then
to be set in motion. As the operation procoeds the volatile solvent
or solvents will pass over in vapour and become condensed, and the
condensed volatile solvents may be employed for re-use or otherwise,
and the resulting mass will be found at the termination of the operation
to be in a plastic condition and of an uniform consistency, and which
product may then either be rolled into sheets or may be spread upon
surfaces, or may be employed for the covering of telegraphic wires, or
for any other purpose, by any well known means, or it may be pressed
or moulded into forms or otherwise fashioned as is well understood.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be used

page_text: 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 employ-
ment in and for the production of compounds containing xyloidine of
an evaporating or concentrating apparatus containing an arrangement
for mixing or stirring the contents of the same in conjunction with a
condensing apparatus, either alone or in combination with an exhauster
or current producing apparatus, in order that the contents of the
apparatus may be kept in motion and that the evaporation of the volatile
solvents may be facilitated, and also that the volatile products which
are evaporated during the process of mixing or stirring may be condensed
and be rendered capable of reutilisation.
In witness whercof, I, the said Daniel Spill, have to this my
Specification set my hand and scal, this Fourteenth day of
September, One thousand eight hundred and seventy.
DANIEL SPILL (TS)
DANIEL SPILL (LS)