IMPROVEMENTS IN AND RELATING TO BENDING CORRUGATED METAL
Year: 1878

page_text: LETTERS PATENT to Charles Fredrick Elliott and John Bayley, both of Liver-
pool, in the County of Lancaster, for the Invention of "IMPROVEMENTS IN
AND RELATING TO BENDING CORRUGATED METAL."
Sealed the 25th April 1879, and dated the 25th November 1878.
PROVISIONAL SPECIFICATION left by the said Charles Fredrick Elliott and
John Bayley at the Office of the Commissioners of Patents on the 25th
November 1878.
CHARLES FREDRICK ELLIOTT and JOHN BAYLEY, both of Liverpool, in the
County of Lancaster. "IMPROVEMENTS IN AND RELATING TO BENDING COR-
RUGATED METAL."
Our Invention relates to a novel method of bending corrugated metal so as to
form ridge tiles, boxes, packing cases, columns, and numerous other articles
composed of metal, where great strength is required and corrugated metal is
applicable.
Prior to our Invention we are not aware of any method existing for bending
corrugated metal, such for example as corrugated zinc or iron, the corruga-
tions in such metal preventing the bending by throwing out the surplus of metal
caused by the corrugation into such bend.
.
Now the method which we adopt, and which constitutes our Invention, consists
in the gathering in of such surplus metal at the bend, which it is understood is
always across the corrugations. This gathering in of the metal is effected by a
press, and causes an appearance on the bend, as shown on the accompanying
Drawing at Figure 1, A. being an outside view of a ridge piece viewed from the
outside at B, and shown in section at C, D being the convex of the corrugations,
and G the concave of the corrugations on the outside view B, and E being the
convex and F the concave on the sectional view C. The gathering in of the surplus
metal causes the humps H, which vary according to the angle of the bend and the
Dmins Q31

page_text: pitch of the corrugations. Figure 2 is a part plan of Figure 1; Figure 3 is a
section through X, Figure 1; and Figure 4 is a section through Z, Figure 1.
The Drawing illustrates our Invention as applied to a ridge piece, and it will be
seen that the corrugations of the ridge piece will adapt themselves to the cor-
rugations of the corrugated sheets of the roofing, the ridge being tubular and
ornamental.
It will be readily seen that the principle of gathering in and so bending corru-
gated metal enables corrugated metal to be used for numerous purposes for which
it has hitherto been unapplicable, such as ridge pieces, packing cases, trunks, boxes,
columns, gutters, and various such like purposes too numerous to mention.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Fredrick Elliott and John Bayley in the Great Seal Patent
Office on the 21st May 1879.
CHARLES FREDRICK ELLIOTT and JOHN BAYLEY, both of Liverpool, in the
County of Lancaster. "IMPROVEMENTS IN AND RELATING TO BENDING CORRUGATED
METAL."
Our Invention relates to a novel method of bending corrugated metal so as
to form ridge tiles, boxes, packing cases, columns, and numerous other articles
composed of metal where great strength is required and corrugated metal is
applicable.
Prior to our Invention we are not aware of any method existing for bending
corrugated metal across the corrugations, such for example as corrugated zinc or
iron, the corrugations in such metal preventing the bending by throwing out the
surplus of metal caused by the corrugation into such bend.
Now the method which we adopt, and which constitutes our Invention, consists
in the gathering in of such surplus metal at the bend, which it is understood is
always across the corrugations. This gathering in of the metal is effected by a
press, and causes an appearance on the bend, as shown on the accompanying
Drawings at Figure 1, A being an outside view of a ridge piece viewed from the
outside at B, and shown in section at C, D being the convex of the corrugations,
and G the concave of the corrugations on the outside view B, and E being the convex
and F the concave on the sectional view C. The gathering in of the surplus metal
causes the humps H, which vary according to the angle of the bend and the pitch
of the corrugations. Figure 2 is a part plan of Figure 1; Figure 3 is a section
through X, Figure 1; and Figure 4 is a section through Z, Figure 1.
The Drawings, Figures 1, 2, 3, and 4 (Sheet 1), illustrate our Invention as applied
to a ridge piece, and it will be seen that the corrugations of the ridge piece will
adapt themselves to the corrugations of the corrugated sheets of the roofing, the
ridge being tubular and ornamental. The same principle of bending as illustrated in
the Drawings, Figures 1, 2, 3, and 4, is applicable to all purposes to which bent
corrugated metal can be applied, allowances being made for the pitch of the corru-
gations, the thickness of the metal, and the angle and bend required for the special
article under manufacture.
In order that our Invention and the method of performing the same may be
clearly understood we have annexed a Sheet of Drawings (Sheet 2) illustrative
thereof, marked with letters and figures of reference corresponding with those
in the following explanation. In all the Figures the same letters of reference where
they occur indicate the same or corresponding parts, and also parts corresponding to
the Figures on Sheet 1.
Figure 5, Sheet 2, is a front elevation of a matrix block and die (which is worked
in connection with any suitable press) such as we employ for bending corrugated
metal according to our Invention.
Figure 6, Sheet 2, is a section through A, B, Figure 5.
Figure 7, Sheet 2, is a section through A, B, Figure 5, showing position of cor-
rugated metal before bending.
Figure 8, Sheet 2, is a section through A, B, Figure 5, showing position of corru-
gated metal after bending.
The views in Figures 7 and 8 slightly differ as to the position of the section of
the corrugated sheet under treatment.
Upon reference it will be seen that J is the die or male, and
female. The die J is formed with a round edge with humps L.
formed with a gutter M and corrugated ridges N, N¹.
K the matrix or
The matrix K is
The sheet of metal to be bent is represented by A, Figures 7 and 8, Sheet 2,
Figure 7 showing the position before bending, and Figure 8 the position after

page_text: bending. Any required angle of bend can be attained by the regulation of the
depression of the die J into the matrix K.
It will be readily seen that the principle of gathering in and so bending corrugated
metal according to our Invention enables corrugated metal to be used for numerous
purposes for which it has hitherto been unapplicable, such as ridge pieces, cisterns,
tanks, packing cases, trunks, boxes, columns, gutters, and various such like purposes
to numerous to mention.
Sheet and thin plate corrugated metal can be bent across the line of corrugation
cold. Plates of heavier gauge can be heated to facilitate bending.
Having now fully described and ascertained the nature of our said Invention,
and described and illustrated the system, mode or manner in or under which the
same is or may be performed or practically carried into effect, we would have it
understood that our Invention is not confined to the bending of any particular
corrugated metal, nor to the bending of corrugated metal to be used in the manu-
facture of any particular article, or for any particular purpose, or whether the cor-
rugated metal under treatment is cold or heated; we would also have it understood
that we do not confine ourselves to the identical form of die and matrix illustrated in
the Drawings, as the same can be varied in shape or form without departing from
our Invention; but what we claim as our Invention is,-
First. Bending corrugated metal (in a cold or in a heated state), as described,
across the line of corrugation by gathering in or humping the surplus metal caused
or thrown out by the corrugations during the act of bending.
Second. Bending corrugated metal (in a cold or in a heated state) across the line
of corrugation by means of pressure between a die and matrix such as that herein-
before described, and illustrated at Figures 5 to 8, Sheet 2 of the Drawings, or any
modification thereof.
In witness whereof, we, the said Charles Fredrick Elliott and John Bayley,
have hereunto set our hands and seals, this Fourteenth day of May, in the
year of our Lord One thousand eight hundred and seventy nine.