Improvements in the Manufacture of Compound Armour Plates and similar Articles.
Year: 1889

page_text: Date of Application, 18th Dec.,
1889
Complete Specification Left, 17th Sept., 1890-Accepted, 13th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Compound Armour Plates and
similar Articles.
I, JOSEPH ELTON BOTT, of Eyam, in the County of Derby, Metallurgist, do hereby
declare the nature of this invention to be as follows:-
My invention relates to casting steel or an alloy of steel with other metals on to a
base of wrought iron.
•
In order to accomplish this I first plate the finished wrought-iron portion of
the armour plate or other similar article with a coating of nickel, aluminium or other
slowly oxidizable material, the said finished or prepared plate is then placed in a
suitable mould, and steel or an alloy of steel and other metal or both is then cast on
so as to dispense with rolling, or if a rolled steel or other metal is required then the
mould may be made tapering at its sides, so as to allow for rolling the steel or other
metal down to the dimensions of the armour or other plate desired.
In constructing an armour plate on my principle I prefer to adopt the following
method.
First I prepare a suitable wrought iron plate or backing which I plate preferably
with nickle, but aluminium or other slowly oxidizable material may be employed.
Secondly, I place the said prepared wrought iron plate or backing in a suitable
mould after having heated the plate or backing to a welding heat.
Thirdly I cast the desired thickness of molten steel or of steel alloyed with nickle
or other metal (in the proper proportion) on to the nickle plated wrought-iron plate
or backing, with the result that I produce a soft-fibrous wrought iron foundation or
backing covered or protected by a tough and moderately hard shield of steel or nickle
or other alloyed steel or both.
If it is desired to make an armour plate of still harder surface, I cast a hard steel
face on top of the already prepared compound plate first plating the surface with
nickle or other slowly oxidizable material before heating in case the percentage of
nickle or other alloy in the nickle or other alloyed steel is not sufficient to prevent
oxidization.
By plating the surfaces as herein described the welding together or intimate union
of the various layers forming the combined plate is secured.
Dated December 18th 1880
JOSEPH ELTON BOTT.
By Harris & Mills,
23, Southampton Buildings, London. Agents.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Compound Armour Plates and
similar Articles.
I, JOSEPH ELTON BOTT, of Eyam, in the County of Derby, Metallurgist, 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:-
My invention relates to the manufacture of compound armour plates and similar
articles by casting steel or an alloy of steel with other metals on to a base of
wrought iron.
The wrought iron portion of the armour plate or other similar article is first made
in any well known or suitable manner, it is then cleaned or pickled, and a coating of
nickel, aluminium, or other slowly oxidizable metal or alloy is deposited thereon

page_text: by electricity, or such coating may be applied thereto in any other convenient and
suitable manner.
The said finished or prepared wrought iron plate or backing is then placed in a suitable
mould, after having been heated to a welding heat, and steel or an alloy of steel and
other metal, or both, is then cast on, so as to dispense with rolling.
By these means I produce an armour plate or other similararticle having a wrought
irou foundation or backing, covered or protected by a tough and moderately hard
shield of steel or of nickel or other alloyed steel, or both.
If it is desired to make an armour plate or other similar article having a still harder
coating or shield, I cast a hard steel face on the top of a compound plate prepared in
the manner above described; in effecting this I heat the compound plate prepared as
above described to a welding heat and then pour on the required amount of steel to
produce the desired face if the said compound plate has had a coating or layer of steel
or of alloyed steel having a percentage of nickel or other alloy, which is sufficient to
prevent oxidization. If it has not such a coating or layer, I first clean or pickle the
said compound plate, and then plate or otherwise coat the same with nickel or other
slowly oxidizable metal or alloy, after which I heat the said nickel or otherwise
protected compound plate to a welding heat, place the same in a mould, and then pour
on the required amount of steel.
By electro plating or otherwise coating the surfaces with nickel, or other slowly
oxidizable metal or alloy, as herein described, the plate, when heated to a welding
heat, is protected against oxidization, by which means the intimate union or welding
together of the various layers forming the combined plate is secured.
Plates constructed as herein described may be employed as armour for vessels,
forts, and other buildings or places or they may be used in the construction of safes
and doors of strong rooms or for other purposes where such a description of plate is
required.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
:-
1. The manufacture of compound armour plates and other similar articles by the
following process, namely, 1st, preparing a plate or backing of wrought iron,
2nd, coating the said plate with nickel or other slowly oxidizable metal or alloy.
3rd, heating the said plate toa welding heat, 4th, placing the same in a suitable mould,
and 5th, casting thereon a sufficient quantity of molten steel, or of an alloy of steel and
other metal, substantially as herein described.
2. The manufacture of compound armour plates and other similar articles by,
1st, preparing a compound plate as stated in the first claim, 2nd, coating the same
with nickel or other slowly oxidizable metal or alloy if required, 3rd, heating the
same to a welding heat, and 4th, placing the same in a suitable mould and casting
thereon a layer or face of hard steel, substantially as herein described.
3. The employment in the manufacture of compound armour plates, of the process
of plating with nickel or other slowly oxidizable metal prior to casting on to the
foundation or backing, a further layer or coating, substantiallyas and for the purposes
herein described. A
VALIN
JOSEPH ELTON BOTT.
By Harris & Mills,
23, Southampton Buildings, London, Agents.