IMPROVEMENTS IN PRESERVING AND COLORING WOOD
Year: 1847

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANCOIS
AUGUSTIN RENARD, of 40, Rue de Rochie, Paris, in the Kingdom of France,
Merchant, 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 Nineteenth day of
August, One thousand eight hundred and forty-seven, in the eleventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me;
the said Francois Augustin Renard, my exors, admors, and assigns, Her
especial licence, full power, sole privilege and authority, that I, the said
Francois Augustin Renard, my exors, adñors, and assigns, or 'such other's as
I, the said Francois Augustin Renard, my 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, 'my Invention of "IMPROVEMENTS IN PRESERVING AND COLORING
WOOD;" in which said Letters Patent is contained a proviso that I, the said
Francois Augustin Renard, should cause a particular description of the nature
of my said Invention, and in what manner the same is to be performed, by an
instrument in writing under my hand and seal, to be inrolled in Her Majesty's
High Court of Chancery within six 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.

page_text: NOW KNOW YE, that, in compliance with the said proviso, 1, the
said Francois Augustin Renard, do hereby declare the nature of my said
Invention, and the manner of performing the same, are fully described and
ascertained in and by the following description, reference being had to the
Drawings hereunto annexed, and to the letters and figures marked thereon,
that is to say :-
The Invention consists of a mode of constructing an apparatus wherein a
vacuum is produced, and to be placed at one end of a log of wood, so that a
preserving or colouring liquid, placed in a suitable vessel at the other end, will
be caused to pass through the log of wood in the longitudinal direction of the
fibres. But, in order that this Invention may be more fully understood, I will
proceed to describe the Drawing, in which A is a cylinder of metal, having a top
piece C, to which is suspended a rod, having attached to it a piece of perforated
metal K; at the lower part of this cylinder is a cock E. D is a disc of metal,
having an opening in its centre leading into the cylinder A; this disc is
brought into contact with one end of the log of wood, at the end of which is a
leather washer, so placed that there is a small space between the wood and
the metal disc. F is a collar placed around the log of wood, having a chain
attached to it, and by which the wood may be moved to and fro as required
upon the frame L, by means of the screw G. In turning the screw by means
of the lever the chain will act upon the collar F either to bring the block
nearer or remove it farther away, as may be required. The other end of the
block of wood is covered by a bag of impermeable material, which bag is
connected to a cock of the vessel containing the liquid to be used. The wood
being thus arranged, if exhaustion is produced in the cylinder A, the
atmosphere acting upon the surface of the liquid in the vessel I will cause it
to flow through the block. of, wood. This vacuum may be obtained in any.
suitable manner, but the mode which. I prefer to use is as follows:-The
metallic cloth K having been impregnated with some inflamable substance
(such as alcohol), is introduced in an ignited state into the cylinder A, and.
combustion will take place and the air will escape out of the cock E, which
is left open for that purpose. The workman will be ready to close this cock
as soon as the state of the vacuum will permit, which will be shewn by'
a small barometer M, there being a tube passing through the upper part.
of the cylinder to the barometer, by which means the exact state of the
vacuum will be ascertained. The action of the liquid through the wood may
be accelerated by means of a forcing pump, or any other suitable means.
In the Drawing I have shewn the process being performed upon the timber
when in a horizontal position; but it may also be performed in a vertical:

page_text: position, by using, in place of the bag H and receiver I, a vessel with
an opening in the bottom, in which the liquid will be kept. When the
moisture of the wood, or the liquid which passes through, shall have come
through into the cylinder A, the vacuum will be disarranged; the barometer
will indicate this by falling to the point o; the cock E is then to be opened,
and the liquor will run out into a vessel placed underneath, the air being
renewed in the cylinder by means of a blowing apparatus; the vacuum will
then be obtained as before described. If the piece of wood to be operated
upon should be square instead of round, then, in place of the bag and vessel I,
I use a trough, into which the whole of the timber is to be immersed, with the
exception of the end to which the metal disc is applied. Several pieces of wood
may be operated upon in the same trough, by having several of the exhausting
apparatus applied thereto.
With regard to the material employed for the coloring or preserving, I
employ those which are well known for such purposes, and do not confine
myself to the precise details herein given, so long as the character of the
Invention be retained; but what I claim is, the mode of arranging apparatus
for impregnating wood, for the purpose of preserving and coloring wood as
herein, described.
In witness whereof, I, the said Francois Augustin Renard, have hereunto
set my hand and seal, this Twelfth day of February, in the year of
our Lord One thousand eight hundred and forty-eight.
FRANCOIS AUGUSTIN (L.s.) RENARD..
Taken and acknowledged by Francois
Augustin Renard (party hereto), at
Paris, in the Kingdom of France,
this Twelfth day of February, 1848,

page_text: : character of the handwriting of Thomas Pickford, Her Britannic Majesty's
Consul at Paris! in the Kingdom of France; and this Deponent further
saith, that the signature "Thomas Pickford," set, subscribed, or written' in
the margin of the Specification hereunto annexed, marked A, and dated the
Twelfth day of February now instant, and purporting to be executed by
Francois Augustin Renard, of 40; Rue de Rochie, Paris, in the Kingdom of
France, Merchant, whereby it is stated that the said. Specification was
acknowledged by him; the said Francois Augustin Renard, before the said
Thomas Pickford, on the said Twelfth day of February, at Paris aforesaid, is
of the proper handwriting of the said Thomas Pickford.
AND BE IT REMEMBERED, That on the oath of Samuel Carpmaël, the
Specification aforesaid was enrolled, word for word, as above written. And
also the Specification aforesaid was stamped according to the tenor of the
'Statute made for that purpose.