IMPROVEMENTS IN THE MODE OF CORRUGATING ANGULAR IRON
Year: 1854

page_text: LETTERS PATENT: to John McGaffin, of Liverpool, in the County of
Lancaster, Engineer, for the Invention of "IMPROVEMENTS IN THE MODE
OF CORRUGATING ANGULAR IRON.":
PROVISIONAL SPECIFICATION left by the said John McGaffin at the
Office of the Commissioners of Patents, with his Petition, on the 14th
July 1854.
I, JOHN MCGAFFIN, of Liverpool, in the County of Lancaster, Engineer,
do hereby declare the nature of the Invention for "IMPROVEMENTS IN THE
MODE OF CORRUGATING ANGULAR IRON " to be as follows:-
This Invention consists in the manufacture of corrugated wrought iron,
angle, T or H, or any such forms of rolled iron, with all or any of the flanges
corrugated. This is accomplished either during the process of rolling the iron,
in dies made with the requisite sized corrugations, or by passing the iron after
it is rolled into the first or usual forms through a set of rollers, placed at the
requisite angles, having corrugations in them and fitting into each other, these
rollers to have such forms of corrugations as may be required; or there may be
dies placed in a position to receive the rollers into the dies, the rollers or dies
in these cases to taper from the angles towards the edges, beginning from the
angle; or the corrugations may be made by striking the iron in a die in a
stamping or pressing machine, or by a forge hammer or other hammer; the
length of the dies will depend upon the thickness and width of the angle, T, H,
or any such formed iron. Several punches or presses or hammers may be

page_text: placed in a row, so as to stamp the iron more expeditiously, particularly if
heavy iron, so as to get it done in one heat or fewer heats. The iron when
so corrugated may be bent to any form, or some descriptions may be bent
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John McGaffin in the Great Seal Patent Office on the 11th
January 1855.
of
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, Joun
McGAFFIN, of Liverpool, in the County of Lancaster, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of July, in the year of our Lord
One thousand eight hundred and fifty-four, in the eighteenth year
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said John McGaffin, Her special licence that I, the said John
McGaffin, my executors, administrators, and assigns, or such others as I,
the said John McGaffin, ny executors, administraters, 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 THE MODE OF CORRUGATING ANGULAR IRO." upon the con-
dition (amongst others) that I, the said John McGaffin, by an instrument in
writing under my hand and seal, 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 McGaffin, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement thereof (that is to say):
-
This Invention consists in the manufacture of corrugated wrought iron
angle, T or H, or any such forms of rolled iron, with all or any of the flanges
corrugated. This is accomplished either during the process of rolling the icen
in dies made with the requisite sized corrugations, or by passing the iron after
it is rolled into the first or usual forms through a set of rollers, placed at the

page_text: requisite angles, having corrugations in them, and fitting into each other, these
rollers to have such forms of corrugations as may be required; or there may
be dies placed in a position to receive the rollers into the dies, the rollers or
dies in these cases to taper from the angles towards the edges, beginning from
the angle; or the corrugations may be made by striking the iron in a die in a
stamping or pressing machine, or by a forge hammer or other hammer; the
length of the dies will depend upon the thickness and width of the angle, T, H,
or any such formed iron. Several punches or presses or hammers may be
placed in a row, so as to stamp the iron more expeditiously, particularly if
heavy iron, so as to get it done in one heat or fewer heats. The iron when
so corrugated may be bent to any form, or some descriptions may be bent
or curved to a certain extent in the process of corrugating.
DESCRIPTION OF THE DRAWING.
Figures 1, 2, 3, and 4 show four forms of angle wrought iron bars with cor-
rugations suitable for being fixed by rivets or screw bolts to corrugated sheets
of iron, other forms of angle iron may be made, but the above are those
principally used.
In witness whereof, I, the said John McGaffin, have hereunto set my
hand and seal, this Sixth day of January, in the year of our Lord One
thousand eight hundred and fifty-five.
DESCRIPTION OF THE DRAWING.
Figures 1, 2, 3, and 4 show four forms of angle wrought iron bars with cor-
rugations suitable for being fixed by rivets or screw bolts to corrugated sheets
of iron, other forms of angle iron may be made, but the above are those
principally used.
In witness whereof, I, the said John McGaffin, have hereunto set my
hand and seal, this Sixth day of January, in the year of our Lord One
thousand eight hundred and fifty-five.
The filed DRAWING is partly coloured.