A NEW MATERIAL POR TANNING
Year: 1863

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street,
in the City of London, Patent Agent, for the Invention of "A NEW
MATERIAL POR TANNING."-A communication from abroad by Antoine
PROVISIONAL SPECIFICATION left by the said Richard Archibald
Brooman at the Office of the Commissioners of Patents, with his
Petition, on the 22nd October 1863.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, Patent Agent, do hereby declare the nature of the said Invention
for "A NEW MATERIAL FOR TANNING," to be as follows:-
This Invention consists in the employment, in. substitution for oak bark in
tanning, of the wood and bark of the chestnut tree. The wood or bark is
reduced to coarse dust or powder in the same manner as oak bark, and is to
be used in tanning in the same manner as oak bark.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent Office
on the 22nd April 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of London, Patent
Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of October, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year
of Her reign, did, for Herself, Her heirs and successors, give and grant
anto me, the said Richard Archibald Brooman, Her special licence that I, the
said Richard Archibald Brooman, my executors, administrators, and assigns,
or such others as I, the said Richard Archibald Brooman, 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, the Channel Islands,
and Isle of Man, an Invention for "A NEW MATERIAL FOR TANNING," (com-
municated to me. from abroad by François Michel, of Paris, France,) upon
the condition (amongst others) that I, the said Richard Archibald Brooman,
my executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, 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 Richard Archibald Brooman, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by
the following statement thereof, that is to say:-
The scarcity of oak, the bark of which is employed in tanning, induced the
party who communicated this Invention to me to endeavor to discover among
other common woods a material which might be advantageously substituted.
He has ascertained that the quantity of tannin contained in the wood and bark
of the chesnut tree is equal to that contained in oak bark, and more pure.
Attempts have already been made to employ extract of the chesnut tree in
tanning, but in such trials a decoction of the chesnut wood has been prepared
and concentrated to about 20° Beaumé. The leather has been badly tanned

page_text: and too much colored; in addition to the coloring and the alteration produced
by the action of the heat and of the air during the concentration, the con-
centrated tannin prepared with this decoction contained in solution an inert
matter injurious to the tanning.
Now this Invention consists in the employment in substitution for oak bark
in tanning of the wood and bark of the chesnut tree. The wood and bark arc
reduced to coarse powder or dust in the same manner as oak bark, and are
used in tanning in the same manner as oak bark.
In witness whereof, I, the said Richard Archibald Brooman, have
hereunto set my hand and seal, this Twenty-second day of April, One
thousand eight hundred and sixty-four.
R. A. BROOMAN. (L.S.)