AN IMPROVED MANUFACTURE OF ARMOUR PLATES
Year: 1884

page_text: We, THOMAS EDWARD VICKERS and EDWARD REYNOLDS, both of The River Don
Works, Sheffield in the county of York, Steel Manufacturers, do hereby declare the
nature of our invention for "AN IMPROVED MANUFACTURE OF ARMOUR PLATES"
to be as follows:-
Our invention relates to the manufacture of armour plates having on the one side
steel or metal of a quality different from that on the other side. We effect this in
the following manner. In the mould, in which the armour plate or the ingot for
a plate is to be cast, we place a partition plate, preferably of steel, thoroughly
cleansed by pickling or grinding, and tinned or otherwise protected from oxidation.
Into the mould, we pour simultaneously two charges of steel or metal of different
qualities, one on each side of the partition plate, which becomes united to both, the
whole making up together a compound plate or ingot which can afterwards be
forged or rolled to the desired thickness.
As the partition plate is liable to be buckled by unequal heating during the
pouring, we prefer to make it corrugated, so as to allow for the inequalities being
taken up by more or less alteration of the form of the corrugations. Or, instead of
corrugating the partition plate, we curve it and make the mould so as to cast an
ingot of somewhat greater curvature, such that after rolling the ingot to form
a flat plate, the thickness of metal on each side of the partition plate becomes
approximately uniform.

page_text: We, THOMAS EDWARD VICKERS, and EDWARD REYNOLDS, both of The River Don
Works, Sheffield in the county of York, Steel Manufacturers, do hereby declare the
nature of our invention for "AN IMPROVED MANUFACTURE OF ARMOUR PLATES"
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
.
Our invention relates to the manufacture of armour plates having the one side
steel or metal of a quality different from that on the other side. We effect this in
the following manner. In the mould in which the armour plate or the ingot for
a plate is to be cast, we place a partition plate, preferably of steel, thoroughly
cleansed by pickling or grinding, and tinned or otherwise protected from oxidation.
Into the mould, we pour simultaneously two charges of steel or metal of different
qualities one on each side of the partition plate, which becomes united to both, the
whole making up together a compound plate or ingot which can afterwards be
forged or rolled to the desired thickness.
As the partition plate is liable to be buckled by unequal heating during the
pouring, we prefer to make it corrugated, so as to allow for the inequalities being
taken up by more or less alteration of the form of the corrugations. Or instead of
corrugating the partition plate, we curve it and make the mould so as to cast an
ingot of somewhat greater curvature, such that after rolling the ingot to form
a flat plate, the thickness of metal on each side of the partition plate becomes
approximately uniform.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1 The manufacture of armour plates having on the one side metal of quality
different from that on the other side by pouring the two qualities of molten metal
simultaneously into an ingot mould divided by a partition plate, substantially as
herein described.
2 Corrugating or bending the partition plate referred to in the preceding claim.
for the purpose set forth.