IMPROVEMENTS IN THE MANUFACTURE OF ARMOUR PLATES.
Year: 1882

page_text: LETTERS PATENT to John Devonshire Ellis of Sheffield in the County of York
Ironmaster for an invention of IMPROVEMENTS IN THE MANUFACTURE OF
ARMOUR PLATES.
"
$6
PROVISIONAL SPECIFICATION left by the said John Devonshire Ellis at the
Office of the Commissioners of Patents on the 4th March 1882.
JOHN DEVONSHIRE ELLIS of Sheffield in the County of York Ironmaster
"IMPROVEMENTS IN THE MANUFACTURE OF ARMOUR PLATES."
My said Invention relates to the manufacture of armour plates of iron and Steel
united or combined according to the improved method or means for which I
obtained Letters Patent No. 3629 dated the 7th day of September in the year of
our Lord 1880 my present Invention having for its object to cause a portion of
the iron or steel frame (which is placed on the wrought iron plate and which
supports the outer steel plate) to be situated between and at the edge of the steel
which is cast between the said plates this part forming a part of the finished plate
thus giving great soundness at the edges of the said cast steel. According to my
said Invention the frame is formed with a web or webs or a portion or portions
which when the frame is in position project into the space between the iron and
the steel plate into which space the steel is to be cast. The said web or webs or
projecting portion or portions is or are preferably of a wedge shape in section the
lesser part being presented inwards-The molten steel cast between the two plates
runs into the spaces between the said web or webs or projecting portion or
portions and the plates on either side so that the outward part or edge of the
finished plate is formed partly by this web or portion or webs or portions The
frame made according to my Invention may be of wrought iron or steel but is
preferably of worked steel and may be used for the sides of the plate only or for
the sides and the end.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Devonshire Ellis in the Great Seal Patent Office on the
2nd September 1882.
JOHN DEVONSHIRE ELLIS of Sheffield in the County of York Ironmaster
"IMPROVEMENTS IN THE MANUFACTURE OF ARMOUR PLATES
"
My said Invention relates to the manufacture of armour plates of Iron and Steel
united or combined according to the improved method or means for which I
obtained Letters Patent No. 3629 dated as of the Seventh day of September in the
year of our Lord One thousand eight hundred and eighty my present Invention
having for its object to cause a part of the iron or steel frame (which is placed on
the wrought iron plate and which supports the outer steel plate) to be situated
between and at the edge of the steel which is cast between the said plates this
part forming a portion of the finished plate and giving thereto great soundness at
the edges of the said cast steel. According to my said Invention the frame is
formed with a web or webs or a portion or portions which when the frame is in
position projects or project into the space between the iron and steel plate into
which space the steel is to be cast The said web or webs or projecting portion or
portions is or are preferably of a wedge shape in section the lesser part being
presented inwards The molten steel cast between the two plates runs into the
spaces between the said web or webs or projecting portion or portions and the
plates on either side so that the outward part or edges of the finished plate is or
are formed partly by this web or portion or webs or portions The frame made
according to my Invention may be of wrought iron or steel but is preferably of
worked steel and may be used for the sides of the plate only or for the sides and
the end
And in Order that my 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 all the figures.
Figure 1 is a transverse section of the wrought iron plate A and worked steel
plate C with the frame H forming the space between them for the reception of
the molten steel.
Figure 2 is a plan of the same and Figure 3 is a transverse section of the frame
drawn to a larger scale Each member (that is, each side piece and the end piece)
of the said frame has projecting from its inner side a wedged shaped or tapering
web D projecting into the space which is to be occupied by the molten steel
Between the said web D and each of the plates A and C are spaces d d into which
the said molten steel will run. I do not limit myself to the form of web shown
as it may be of any convenient shape for example one side only may be inclined or
wedge shaped and the other be at right angles to the plate or both sides may be
parallel with each other or it may be thickened at the end or edge Also there
may be two or more webs of smaller size if desired in place of one large web as
shewn The plates and frame are subjected to heat and the molten steel passed
into the space between and the combined plate afterwards treated and rolled after
the manner described in the Specification of my aforesaid Patent The plate may
be cut as shewn by the line x so that the projecting part or parts or web or
webs (D) of the frame will form a part of the edges of the finished plate.
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

page_text: therefore claim as the Invention secured to me by the hereinbefore in part recited
Letters Patent is.
The manufacture of Armour plates of iron and steel combined by the employ-
ment of a frame or edge piece or pieces (which separate the wrought iron plate
and the steel plate so as to form the space for the molten steel) having a web
or webs or portion or portions projecting into the space for the molten steel
substantially as and for the purpose described.
In witness whereof I the said John Devonshire Ellis have to this my
Specification set my hand and seal this First day of September One
thousand eight hundred and eighty two.
JOHN DEVONSHIRE ELLIS. (L.S.)