IMPROVEMENTS IN MACHINERY OR APPARATUS FOR ROLLING METAL
Year: 1876

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields, in the
County of Middlesex, Gentleman, for the Invention of "IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR ROLLING METAL." A communication from
abroad by Jean Baptiste Louis Pion, Sub-Manager of the Marine and Railway
Blast Furnace Forge and Steel Works Company, of Paris, in the Republic of
France.
Sealed the 19th January 1877, and dated the 2nd August 1876.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson at the
Office of the Commissioners of Patents on the 2nd August 1876.
JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman. "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR ROLLING METAL."
A communication from abroad by Jean Baptiste Louis Pion, Sub-Manager of tho
Marine and Railway Blast Furnace Forge and Steel Works Company, of Paris, in
the Republic of France.
This Invention relates to machinery or apparatus for rolling metal, and has for its
object the rolling of metallic sheets or plates with non-parallel faces, the angles of
which faces may be varied as desired without causing in finished pieces any lateral
curvature on leaving the rolls.
This result is obtained by the employment of a pair of conical rolls, the angle of
inclination of which may be varied as required to suit the desired angle of the plate
to be produced.
According to this Invention the conical rolls are arranged with their small ends
and their large ends opposite one another, whereby unequal elongation of the
different parts of the metal will be prevented during the operation of rolling.
The practical good working of the apparatus is ensured by constructing the
journals of the rolls either of a conical shape, or of a concave or an undulating form,
so as to destroy during the rolling process the effects of the oblique thrust resulting
from the inclination of the cylinders, and cause the thrust to be received in a vertical
direction by the plummer blocks along the plane of their housing.
Urice 6d. 1

page_text: These forms of journals suitably adapted enable, morcover, plates with surfaces
inclined at various angles to be rolled by merely changing the inclination of
their axes.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said John Henry Johnson in the Great Seal Patent Office on the 1st February
1877.
JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman. "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR ROLLING METAL"
A communication from abroad by Jean Baptiste Louis Pion, Sub-Manager of the
Marine and Railway Blast Furnace Forge and Steel Works Company, of Paris, in
the Republic of France.
The said Invention has for its object the rolling of metallic sheets or plates with
taper faces, the angles of which may be varied as desired without the liability of
any lateral curvature being produced in the finished sheets or plates on their leaving
the rolls.
This result is obtained by the employment of conical (rolls the angle of which
may be varied as required to suit the desired taper of the plate to be produced,
and by so arranging each pair of rolls that the larger end and the smaller end of
one roll of the pair shall be respectively opposite the larger end, and the smaller
end of the other roll of the pair whereby the unequal elongation of the different
parts of the metal will be prevented during the operation of rolling.
And in order that the said Invention may be fully understood I shall now proceed
more particularly to describe the same, and for that purpose shall refer to the
several Figures on the annexed Sheet of Drawings, the same letters of reference
indicating corresponding parts in both the Figures.
Figure 1 of the accompanying Drawing represents a sectional elevation of a
rolling mill with conical rolls constructed and arranged according to the said Inven-
tion, and Figure 2 is a corresponding sectional plan of the same.
In these Figures the housings of the rolls are shewn at A, and B are thic
tightening screws; C are the upper plummer blocks, and D the lower plummer
blocks; E, F, aro the rolls, the larger end 1 of the roll E being arranged op-
posite the larger end 2 of the roller F, and the smaller ends 3, 4, being also
opposite each other between which rolls the plate or Sheet ✗ is rolled to a
taper form as shewn. The journals a, b, of the upper roll E turning bearings c, d,
respectively, and the journals a, b, of the lower roll F turning bearings c¹, d',
respectively.
The practical good working of the apparatus is insured by constructing,the
journals of the rolls either of a conical shape as shown by the full lines, or of a
concave or undulating form as indicated by the dotted lines in the Drawing, so as
to neutralize during the rolling process the effects of the oblique thrust resulting
from the inclination of the rolls and cause the strain to be received in a vertical
direction by the plummer blocks along the plane of their housings which are thus
not liable to be upset.
These forms of journals suitably adapted enable morcover plates with surfaces
inclined at various angles to be rolled by merely changing the inclination of their
axis.
Having now described and particularly ascertained the nature of the said Inven-
tion, and the manner in which the same is or may be used or carried into effect, I
would observe in conclusion that what I consider to be novel and original, and
therefore claim as the Invention secured to me by the herein-before in part recited
Letters Patent is, the application and use to and in the rolling of metal sheets or

page_text: plates with taper faces of conical rolls constructed and arranged substantially in
the manner and for the purposes herein-before described.
In witness whereof, I, the said Jolin Henry Johnson, have to this my Specifica-
tion, set my hand and seal, the First day of February, One thousand eight
hundred and seventy-seven.
J. HENRY JOHNSON. (L.S.)