CERTAIN IMPROVEMENTS IN THE CONSTRUCTION OR FORM OF NAILS TO BE USED IN OR POR THE SECURING OF COPPER AND OTHER SHEATHING ON SHIPS, AND FOR OTHER PURPOSES
Year: 1823

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, GEORGE
MINSHAW GLASCOTT, of Great Garden Street, Whitechapel, in the County of
Middlesex, Brass Founder, and TOBIAS MICHELL, of Upper Thames Street,
in the City of London, Gentleman, send greeting.
WHEREAS His present Majesty King George the Fourth, in and by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Ninth day of November last, for Himself, His heirs and
successors, did give and grant unto us, the said George Minshaw Glascott
and Tobias Michell, our executors, administrators, and assigns, His especial
licence, full power, sole privilege and authority, that we, the said George
Minshaw Glascott and Tobias Michell, our executors, administrators, and
assigns, and every of them, by ourselves and themselves, or by our and their
deputy or deputies, servants or agents, or such others as we, the said George
Minshaw Glascott and Tobias Michell, our executors, administrators, or
assigns, should at any time agree with, and no others, from time to time and
at all times thereafter during the term of years therein expressed, should and
lawfully might make, use, exercise, and vend our said Invention, within that
part of the United Kingdom of Great Britain and Ireland called England, His
Majesty's Dominion of Wales, and the Town of Berwick-upon-Tweed, our
Invention of "CERTAIN IMPROVEMENTS IN THE CONSTRUCTION OR FORM OF NAILS
TO BE USED IN OR POR THE SECURING OF COPPER AND OTHER SHEATHING ON SHIPS,
AND FOR OTHER PURPOSES;" in which said Letters Patent there is contained a
proviso obliging us, the said George Minshaw Glascott and Tobias Michell,
by an instrument in writing under our hands and seals, or under the hand
and seal of one of us, particularly to describe aud. ascertain the nature of our

page_text: said Invention, and in what manner the same is to be performed, and to cause
the same to be inrolled in His Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said Letters Patent,
as in and by the same, reference being thereto had, will more fully appear.
NOW KNOW YE, that in compliance with the said proviso, we, the said
George Minshaw Glascott and Tobias Michell, do hereby describe and ascer-
tain the nature of our said Invention, and in what manner the same is to be
performed, by the Plan or Drawing in the margin of these Presents, and the
following description thereof (that is to say):-
-
The nail heretofore used for securing the copper sheathing of ships being (as
No.1. appears by the Figure marked No. 1 in the said Plan) formed with
the upper part of the head compleatly flat, while the lower part thereof,
connected with the shank of the nail, is rather convex. From this
formation of the head of the nail it almost invariably occurs, that in
the interstice existing between the nail head thus constructed and the
copper sheathing of the vessel, a depositum of marine acid or some
other corrosive property of the salt water takes place, which has the
uniform effect of producing the total decay of that part of the copper sheath-
ing which surrounds the head of the nail and is in immediate contact with it.
N. 2. The nature of our Invention, therefore, for the obviating of such ill
effects, is to invert the form of such head by making the upper part
thereof of a convex or spherical form, while the lower part thereof (as
shewn in the Figure marked No. 2 in the said Plan) is completely
flat and solid, or otherwise rather concave or hollowed out in its lower
part (as appears by a section thereof described by the Figure marked
No. 3 in the said Plan). By this improvement the head of the nail
is brought into closer contact with the copper sheathing than by the
nail hitherto in use, and from its closer pressure thereon not only
more firmly secures the sheathing itself, but leaves no interstice
whatever between the sheathing and the head of the nail wherein
any depositum of such marine acid or corrosive property of the salt
water can possibly take place, and will thereby also prevent the
lecay or corrosion of such part of the sheathing as immediately surrounds
he head of the nail or communicates therewith.
N° 3.
T
In witness whereof, we, the said parties to these Presents, have hereunto
set our hands and seals, this Seventh day of May, in the year of our
Lord One thousand eight hundred and twenty-four.
GEORGE MINSHAW (L.S.) GLASCOTT.
TOBIAS (L.S.)
MICHELL.

page_text: JA STEPHEN.
AND BE IT REMEMBERED, that on the same Seventh day of May,
in the year above mentioned, the aforesaid George Minshaw Glascott and
Tobias Michell came before our Lord the King in His Chancery, and acknow-
ledged the Specification aforesaid, and all and every thing therein contained,
in form above written. And also the Specification aforesaid was stamped
according to the tenor of the Statute in that case made and provided.
Inrolled the Eighth day of May, in the year above written.