Year: 1886

page_text: TLENKY ULEMENT DWINNERTON
YER
westnope Shropsmre Engineer
hereby declare the nature of this invention to be as follows :-
The armour plate is made of a combination of wrought iron and steel and formed in
the following manner:
The mould in which the steel is to be run has arranged in it bars of very hard steel
placed vertically, horizontally or at an angle close to the face which eventually is to
become the face of the armour plate, a second or more layers may also be added if
required, behind these bars are placed layers of wrought iron bars vertically, horizon-
tally, and, if necessary, inclined at different angles so as to make, as it were, an
artificial network of fibre in every required direction. The mould with its network of
bars may be heated inside to any temperature required, in some cases heating may
be dispensed with, and steel of the required temper run into the mould so as to fill up
all the interstices between the bars.
In some cases it is desirable to dispense with the hard steel bars and to use bars of
soft ductile wrought iron, or other ductile metal, and run in steel of a very hard
quality to make the solid ingot.
The ingot is forged and hardened in the usual manner.
CARPMAEL & Co.,
Agents for the Applicant.

page_text: I HENRY CLEMENT SWINNERTON DYER of Westhope Shropshire Engineer do hereby
declare the nature of this invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement :-
The armour plate is made of a combination of wrought iron and steel or steel and
steel or other metals having different degrees of hardness and tenacity.
A number of bars are placed in the mould in which the molten metal is to be run,
and molten metal is run into the mould.
The mode of operation is conveniently as follows:-
The metal bars preferably but not necessarily of iron or steel, after being made to
the required form, are cleaned or pickled to free them from all oxide or otherwise
treated so as to prepare them most effectually for the molten metal to adhere to their
surfaces, and placed in the required position in a mould made in the ordinary manner,
-preferably the molten metal is then allowed to flow through the mould until the
temperature of the bars is raised so that the molten metal will readily adhere to them
-tlie outlet in the mould is then closed so as to allow the mould to be filled in the
ordinary way.
Another method is to heat the bars to the required temperature and run the molten
metal into the mould in the ordinary manner.
The ingot thus formed may be forged annealed, hardened and tempered in the
ordinary manner.
The bars may be placed near the face, near the back or in the centre of the plate.
Figures 1. 2. 3. 4 on the annexed plan shew such methods of introducing bars into
plates to give cohesion and power to resist the impact of projectiles.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
1. My improvements in the manufacture of armour plates consisting in incorporating
in the metal of which the plate is formed bars of metal of different mechanical pro-
perties thereby obtaining cohesion and strength and preventing to a large extent the
cracking of the metal which results from the impact of projectiles and also limiting
the extension of these cracks.
2. The manufacture of compound armour plates of iron or steel by casting molten
metal upon bars of metal of different mechanical property and then forging the com-
pound ingot so obtained.