IMPROVEMENTS IN APPARATUS USED FOR PRESERVING TIMBER
Year: 1858

page_text: LETTERS PATENT to John Armstrong, of 15, Nelson Street, Sunderland,
for the Invention of "IMPROVEMENTS IN APPARATUS USED FOR PRESERVING
TIMBER."
Sealed the 18th June 1858, and dated the 19th April 1858.
PROVISIONAL SPECIFICATION left by the said John Armstrong at the
Office of the Commissioners of Patents, with his Petition, on the 19th
April 1858.
I, JOHN ARMSTRONG, of 15, Nelson Street, Sunderland, do hereby declare
the nature of the Invention for "IMPROVEMENTS IN APPARATUS USED FOR PRE-
SERVING TIMBER," to be as follows:-
This Invention has for its object improvements in apparatus used for
preserving timber. Heretofore timber has been extensively preserved by
being impregnated with preservative fluids, by introducing timber into closed
vessels and applying the fluids under pressure, and in all cases the vessels so
employed have been fixed or stationary, thus necissatating the timber being
brought to and carried from such vessels often to great distances, thus causing
great expense for carriage. Now, my improvements consist in mounting
vessels and apparatus, such as heretofore used for impregnating timber under
pressure, on carriages and wheels suitable for running on railways or on
common roads, in such manner that the vessel and apparatus (necessary for
impregnating timber under pressure in closed vessels with suitable preservative
fluids) may be rendered portable, and readily moved to the places where the
timber to be preserved is situated, whereby much expense will be saved, as the
cost of carriage will only be in respect to the apparatus and preserving fluids,
and not of the timber as heretofore.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Armstrong in the Great Seal Patent Office on the 19th
October 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
ARMSTRONG, of 15, Nelson Street, Sunderland, 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-eight, in the twenty-first year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
John Armstrong, Her special licence that I, the said John Armstrong, my
executors, administrators, and assigns, or such others as I, the said John
Armstrong, 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 "IMPROVEMENTS IN
APPARATUS USED FOR PRESERVING TIMBER," upon the condition (amongst others)
that I, the said John Armstrong, my executor's 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 John Armstrong, 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:-
This Invention has for its object improvements in apparatus used for
preserving timber. Heretofore, timber has been extensively preserved by
being impregnated with preservative fluids by introducing timber into closed
vessels and applying the fluids under pressure, and in all cases the vessels so
employed have been fixed or stationary, thus necessitating the timber being
brought to and carried from such vessels, often to great distances, thus causing
great expence for carriage. Now, my improvements consist in mounting
vessels and apparatus, such as heretofore used for impregnating timber under
pressure, on carriages and wheels suitable for running on railways or on
common roads, in such manner that the vessel and. apparatus (necessary for
impregnating timber under pressure in closed vessels with suitable preservative

page_text: fluids) may be rendered portable, and readily moved to the places where the
timber to be preserved is situated, whereby much expence will be saved, as
the cost of carriage will only be in respect to the apparatus and preserving
fluids, and not of the timber as heretofore.
Having thus stated the nature of my said Invention, I will proceed more
fully to describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
Figure 1 shews a side elevation of apparatus combined according to my
Invention, and suitable for running on railways; if it be desired that the
same or like apparatus should run on other roads, suitable wheels for such
roads will be used in place of those shewn in the Drawing; Figure 2 is a
plan; Figure 3 is a longitudinal section; Figure 4 is an end view with the
cover fixed; Figure 5 is an end view with the cover removed; and Figure 6
is a transverse section. In each Figure the same letters are used to indicate
the same parts.
In Figures 1 and 2 the cylinder or vessel is made with a moveable cover at
one end only; but when preferred, the cylinder or vessel may be made with a
moveable cover at each end. The vessel a, a, is mounted in and carried by a
frame b, b, as shown; c is a crane, by which the cover is turned out of the
way when necessary. The vessel a, a, is fitted as heretofore with all the
requisite apparatus for working, as is well understood.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that I make no claim to
any of the parts separately, nor do I confine myself to the details shown;
but what I claim is, the combining of a vessel a, a, with a frame or
carriages and wheels, as herein described.
In witness whereof, I, the said John Armstrong, have hereunto set
my hand and seal, this Twelfth day of October, in the year of our Lord
One thousand eight hundred and fifty-eight.
Witness,
JOHN G. ADDISON,
Monkwearmouth.
JOHN ARMSTRONG. (L.S.)