AN IMPROVED MODE OF PRESERVING IRON AND OTHER METALS PROM OXYDATION OR RUST;
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDMUND
MOREWOOD, of Highgate, in the County of Middlesex, Gentleman, send.
greeting.
WHEREAS in consequence of a communication made to me by a certain
Foreigner residing abroad, I am in possession of an Invention of "AN IMPROVED
MODE OF PRESERVING IRON AND OTHER METALS PROM OXYDATION OR RUST;" and
whereas Her present most Excellent Majesty Queen Victoria, by Her Letters
Patent under the Great Seal of Great Britain, bearing date at Westminster,
the Twenty-seventh day of August, in the fifth year of Her reign did, for
Herself, Her heirs and successors, give and grant unto me, the said Edmund
Morewood, Her especial licence that I, the said Edmund Morewood, my
exors, admors, and assigns, or such others as I, the said Edmund Morewood,
my exors, adiñiors, 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, and also in all Her said
Majesty's. Colonies and Plantations abroad, "the said Invention;" in which
said Letters Patent is contained a proviso obliging me, the said Edmund
Morewood; by an instrument in writing under my hand and seal, particularly
to describe and ascertain the nature of the said Invention, and in what
manner the same is to be performed, and to cause the same to be enrolled in
Her said 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
Edmund Morewood, do hereby declare the nature of the said Invention to
consist of tinning the metals so to be preserved from oxydation as aforesaid in
the ordinary manner of what is called tinning, and then in what I call zincing
the said tin, so that the external surface may be zinc, placed in such relation
with the tin and the metal to be preserved from oxydation as that both the
tin and zinc shall have an united or combined influence in preserving the said
metal. And in further compliance with the said proviso, I, the said Edmund
Morewood, do hereby describe the manner in which the said Invention is to be
performed by the following statement thereof, that is to say:
I take a piece of iron or any other oxydizable metal whose fusing point is
not less than one thousand two hundred degrees of Fahrenheit, capable of
being tinned, and having tinned it well and evenly by any of those means now
in use for that purpose and too well known by competent workmen to need
any particular description here, the coating of tin having become firmly set
and hard, and having been well cleaned, I immerse the tinned metal in molton
zinc of the purest kind, and the, surface of which having been carefully
skimmed I keep covered with a flux of sal amoniac thrown upon it in a state of
powder. I suffer the tinned metal to, remain in the molten, zinc, which should
be kept fluid and as nearly as possible at the melting point, until on drawing
the tinned metal out of it slowly the zinc surface; presents a smooth and even
appearance. If the tinned metal be an article so large that it would lower
the temperature of the molten zinc sensibly on being immersed in-it, I heat it
(but not to a temperature sufficient to soften the coating of tin) before.intro-
ducing it into the melted zine; and before taking it out I move it gently.about.
in the molten zinc; and when I remove it I'draw it out rather slowly in order to
avoid taking up superfluous metal. I consider that it is well, when practicable,
to melt the zinc, which should be of the purest kind, in an earthen crucible; but
if one of very large size be required I use a welded wrought-iron vessel; cast!
iron being objectionable if brought in contact with the zinc, and attention is
necessary to keep the mòlten zinc clean and free from all dirt and oxide, för
which purpose, after skimming it; I'keep the surface constantly covered with 'a
flux of sal ammoniac as aforesaid. "After taking the tinned metal out of the
molten zine: I immerse it in clean water almost immediately whilst the plate is
still hot, and before the coating has become set and hard, and then scrub and
clean it. therein, and afterwards dry it in bran or sawdust..
Now whereas I am aware that certain colourable alloys of:-tin' might
perhaps answer the same purpose as tin, and that certain colourable alloys
of zinc might perhaps also answer the same purpose as zinc for the purposes

page_text: of this Invention; but as those alloys could only answer well in proportion as
the alloy interfered little with the action of the two properties required from
the tin and zinc alone for the purpose aforesaid, I claim as the said Invention
the preserving of iron and other metals capable of being tinned and fusing at
a temperature of not less than one thousand two hundred degrees of Fahrenheit
from oxidation by tinning them and then dipping the tin covering or surface in
molten zinc as aforesaid, or otherwise coating the said tin covering or surface
with zinc in such manner that a union or contact shall take place between the
surfaces of the zinc and tin, whereby I cause an united or combined influence
to be exerted in the preservation of the said iron or other metal,- and which
influence I believe to be that the zinc prevents the destructive influence of the
tin upon the iron or other metal when tin alone is used, and that the tin lessen's
the destructive influence of the iron or other metal upon 'the zinc when zinc
alone is used to cover the said iron or other metal...
And such Invention being, to the best of my knowledge and belief, entirely
new, and never before used within that part of Her said Majesty's United
Kingdom of Great Britain and Ireland," Her said Dominion of Wales, or
Town of Berwick-upon-Tweed; and also in all Her said Majesty's Colonies and
Plantations abroad, I do hereby declare this to be my Specification of the
same, and that I do verily believe this my Specification" doth comply in all
respects, fully and without reserve or disguise, with the proviso in the said
herein-before" in "part recited Letters Patent contained; - wherefore I hereby
claim to maintain exclusive right and privilege to the said Invention.
"
A
In witness whereof, I, the said Edmund Morewood, have hereunto set
my hand and seal, this Twenty-sixth day of February, in the year of our
Lord One thousand eight hundred and forty-two.
EDMP MOREWOOD.. (L.S.)
AND BE. IT REMEMBERED, that on the Twenty-sixth day of February,
in the year of our Lord 1842, the aforesaid Edmund Morewood came before
our said Lady the Queen in Her Chancery, and acknowledged the Specification.
aforesaid,, and all and every thing therein contained and specified, in form
above written... And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDMUND
MOREWOOD, late of Highgate, in the County of Middlesex, but now of Steel
Yard Wharf, in the City of London, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date at Westminster, the Twenty-seventh day of August, in
the fifth year of reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Edmund Morewood, Her especial licence that I, the
said Edmund Morewood, my exors, adiñors, or assigns, or such others as I,
the said Edmund Morewood, my exors, adiñors, 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, and also in all Her said Majesty's Colonies and Plantations abroad,
my Invention of "AN IMPROVED MODE OF PRESERVING IRON AND OTHER METALS
FROM OXYDATION OR RUST;" and whereas I, the said Edmund Morewood, in
pursuance of a proviso in the said in part recited Letters Patent contained,
did cause a particular description of the nature of my said Invention, and in
what manner the same was to be performed, by an instrument in writing
under my hand and seal, to be enrolled in Her said Majesty's High Court of
Chancery on the Twenty-sixth day of February, One thousand eight hundred
and forty-two; and whereas I, the said Edmund Morewood, have been given
to understand that such parts of the Title and Specification as have reference
to the preserving from oxydation or coating with tin and zinc other metals
than iron, so far as such parts have reference to such other metals, and also
such part of the claim of the said Specification as is expressed by the words
For otherwise coating the said tin covering or surface with zinc in such
manner that a union or contact shall take place between the surfaces of the
zinc and tin" are too general and not sufficiently precise or definite, I, the said
Edmund Morewood, am desirous to enter a Disclaimer of such above-mentioned
parts of the Title and the Specification of my said Invention, and have obtained
Icave of Her Majesty's Attorney General, certified by his fiat and signature,
according to the form of the Statute in such case made and provided.

page_text: KNOW YE THEREFORE, that I, the said Edmund Morewood, hereby
disclaim all such parts of the Title and of the Specification of my said Inven-
tion as have reference to preserving from oxydation or coating with tin and
zinc other metals than iron, so far as such parts have reference to such other
metals; and I confine my Invention to an improved mode of preserving iron
from oxydation or rust by tinning it, and then dipping the tin covering or
surface in molten zinc, as in my said Specification described.
And I also hereby disclaim such part of the claim in the Specification of my
said Invention contained as is expressed by the words "or otherwise coating
the said tin covering or surface with zinc in such manner that a union or
contact shall take place between, the surfaces of the zinc and tin." And
I, the said Edmund Morewood, do further declare that the above Disclaimer
is not such as will extend the exclusive right granted by the said Letters
Patent.
In witness whereof, I, the said Edmund Morewood, have hereunto set my
hand and seal, this Ninth day of December, in the year of our Lord
One thousand eight hundred and forty-five.
This is to certify that the above-named Edmund Morewood has applied to
me for leave to enter with you the above-written Disclaimer of part of the
Title & Specification of a certain Invention, for which Letters Patent were
duly granted to him under the Great Seal of Great Britain, dated at West-
minster, August the 27th, 1841, and to which a Specification was duly
enrolled; and having considered of the said application, and no objection
having been made to the same, I hereby grant leave to the said Edmund
Morewood to file his said Disclaimer, pursuant to the Statute passed in the
fifth & sixth years of the reign of His late Majesty King William the
Fourth, entituled an "Act to amend the Law touching Letters Patent for
Inventions."

page_text: AND BE IT REMEMBERED, that on the Thirteenth day of December,
in the year of our Lord 1845, the aforesaid Edmund Morewood, came before
our said Lady the Queen in Her Chancery, and acknowledged the Disclaimer
aforesaid, and all and, every thing therein contained and specified; in form
above written. And also the Disclaimer aforesaid was stamped according to
the tenor of the Statute made for that purpose: .
Enrolled the Thirteenth day of December, in the year of our Lord
One thousand eight hundred and forty-five.