A NEW OR IMPROVED PROCESS FOR CLEANSING, DRAWING, AND TINNING WIRE
Year: 1870

page_text: LETTERS PATENT to Thomas James Smith, of the Firm of Robertson,
Brooman, and Company, of 166, Fleet Street, in the City of London,
Patent Agents, for the Invention of "A NEW OR IMPROVED PROCESS FOR
CLEANSING, DRAWING, AND TINNING WIRE."-A communication from
abroad by Jean Baptiste Auguste Daubié, of Blanc Murger (Vosges),
France.
Sealed the 15th July 1870, and dated the 21st January 1870.
PROVISIONAL SPECIFICATION left by the said Thomas James Smith
at the Office of the Commissioners of Patents, with his Petition,.
on the 21st January 1870.
I; THOMAS JAMES SMITH, of the Firm of Robertson, Brooman, and
Company, of 166, Fleet Street, in the City of London, Patent Agents, do
hereby declare the nature of the said Invention for "A NEW OR IMPROVED
PROCESS FOR CLEANSING, DRAWING, AND TINNING WIRE," a communication
from Jean Baptiste Auguste Daubié, of Blanc Murger (Vosges), France,
to be as follows:-
This Invention relates to a process for cleansing, drawing, and tinning
wire in a cold state, and especially fine wire, such as is applicable for

page_text: cards, wire gauze, and other purposes. The result of this process is to
give to the wire a rigidity, an elasticity, and a brilliancy not to be
obtained by the processes at present employed; the wire is also rendered
completely inoxidizable. The essential feature of the Invention consists
in the composition of the bath for cleansing and tinning the wire whilst
in a cold state.
;
*
Firstly. To about 50 quarts (100 litres) of water about 6 pounds (3 kilo-
grammes) more or less of the flour of rye is added, and the mixture is
boiled together for about half an hour; it is then allowed to stand until
the water becomes clear.
4
Secondly. A solution is separately prepared containing about 3 ounces
(106 grammes) of pyrophosphate of soda, about ounce (17 grammes)
of crystallized protochloride of tin, and about 2 ounces (67 grammes)
of neutral protochloride of tin are pounded together and dissolved in a
vessel with the addition of about 1 ounce (20 to 25 granimes) of sul-
phuric acid. This second preparation is mixed with the first, whereby a
vegeto-chemico metallic bath is obtained. Several buckets or vessels
are filled with this liquid compound, which may be graduated according
to the fineness of the wire and the degree of tinning desired.
"
The process is then as follows:-The wire, which is drawn. off or
unrolled from bobbins, is immersed in the first vessel containing the
vegeto-chemico metallic liquid, and the cleansing takes place at the
same time the tinning commences, and the wire is reduced by a drawing
frame as usual. The wire then passes into the second vessel containing a
quantity of the liquid, where the same operation is repeated, and thus in
succession into the 3rd, 4th, 5th, 6th, 7th, 8th, or any other number of
the buckets or vessels filled with the liquid that may be found desirable.
The vessels contain a liquid compound more and more energetic, and
the wire passes successively from one bath to the other, thus the
cleansing, drawing, and tinning is completed in successive stages until
the wire is perfectly cleansed; drawn, and tinned..
•
Although the tinning of the wire treated in the successive baths of the
above liquid compound is generally sufficient, plates of lamiated zinc
may be introduced into the bath in order to more firmly fix the deposit
of tin

page_text: It is of course open to the Inventor, firstly, to vary the proportions
of the materials or substances which compose the bath; secondly, to
substitute for the flour of ryc either soap or other fatty or unctuous.
substance; thirdly, to vary the strength or energy of the successive.
baths to any extent as well as their number.
SPECIFICATION iii pursuance of the conditions of the Letters Patent,
filed by the said Thomas James Smith in the Great Seal Patent.
Office on the 16th July 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
JAMES SMITII, of the Firm of Robertson, Brooman, and Company, of
166, Fleet Street, in the City of London, Patent Agents, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of January, in the year
of 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 Thomas James Smith, Her special licence, that
I, the said Thomas James Smith, my executors, administrators, and
assigns, or such others. as I, the said Thomas James Smith, 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, exercisé, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for “A NEW OR IMPROVED PROCESS
FOR CLEANSING, DRAWING, AND TINNING WIRE," a communication to me from
abroad by Jean Baptiste Auguste. Daubić, of Blanc Murger (Vosges),
France, upon the condition (amongst others) that I, the said Thomas
James Smith, my executors or administrators, by an instrument. in
writing under my, or their, or one of their hands and scals, 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 Thomas James Smith, do hereby
declare the nature of the said Invention, and in what manner-the same.

page_text: sively from one bath to the other the cleansing, drawing, and tinning is
completed in successive stages until the wire is perfectly cleansed,
drawn, and tinned.
Although the tinning of the wire treated in the successive baths of
the above liquid compound is generally sufficient, plates of laminated
zinc may be introduced into the bath in order to more firmly fix the
deposit of tin. This process may also be used in silvering wire
employing cyanide of potassium and cyanide of silver, and with or
without the aid of an electrical battery.
It is of course open to the Inventor, firstly, to vary the proportions of
the materials or substances which compose the bath; secondly, to sub-
stitute for the flour of ryc either soap or other fatty or unctuous
substance thirdly, to vary the strength or energy of the successive.
baths to any extent as well as their number.
Having now described the nature of the said Invention communicated
to me as aforesaid, and in what manner the same is to be performed, I
desire it to be understood that claim is made to the process of cleansing,
drawing, and tinning wire by means of a cold vegeto-chemico metallic
bath composed of the various ingredients herein-before specified or their
cquivalents, substantially as set forth.
In witness whereof, I, the said Thomas James Smith, have hereunto
set my hand and scal, this Fourteenth day of July, in the year of
our Lord One thousand eight hundred and seventy.