Improvements in the Welding of Metals.
Year: 1890

page_text: Date of Application, 3rd Mar., 1890
Complete Specification Left. 28th Nov., 1890-Accepted, 3rd Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Welding of Metals.
I, GEORGE HENRY CAMMELL, of Brookfield Manor, Hathersage, in the County
of Derby Gentleman, do hereby declare the nature of this invention to be as
follows:-
In the welding of metals falty welds are frequently caused by the oxide on the
surfaces of the metal remaining within the body of the weld.
I obviate this mischief by first plating with nickel or other slowly oxidizable metal
(by electrical or other means) the surfaces of the metals to be welded.
By so doing all injurious oxidization of the parts to form the joint is prevented
and owing to the nickeliferous or other like surfaces becoming chemically as well as
mechanically, combined at a welding heat an absolutely perfect weld is assured, and
it is also possible for different metals (which easily combine with nickel or other slowly
oxidizable metal) to be welded together.
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COMPLETE SPECIFICATION.
Improvements in the Welding of Metals.
I, GEORGE HENRY CAMMELL of Brookfield Manor, Hathersage in the County
of Derby, Gentleman, 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 :-
In the welding of metals faulty welds are frequently caused by the oxide on the
surfaces of the metal remaining within the body of the weld.
1 obviate this mischief by previously plating with nickel (by electrical or other
means) the surfaces of the metals to be welded together.
My invention is particularly applicable to the manufacture of armour plates but is
also applicable to other purposes where plates or portions of similar or dissimilar metals
are required to be welded together.
I will describe the application of my invention to the manufacture of armour
plates.
The steel plates or the iron and steel plates that are to be welded together are
first cleaned from all oxide and are then plated with nickel (by electrical or other
means) they are then placed one on the top of the other with the nickel plated surfaces
against each other and are then put into a suitable furnace where they are heated to
a welding heat, and on removal from the furnace they are rolled together in the usual
manner. For ordinary welding the parts to be placed adjacent to and welded to each
other are first thoroughly cleaned and then protected by nickel plating as above
described they are then heated to a welding heat and pressed or hammered together
in any usual manner.
My invention is applicable to the welding together of iron, steel, iron and steel and
of various metals capable of being welded together.
The reason for the employment of nickel as a protective metal in the manner above
described is that it is very slowly oxidizable, even at high temperatures and does not
volatilize at welding heats thus retaining its value as a protecting medium to the
surfaces to be welded together.

page_text: By the above described process all injurious oxidation of the parts to form the
welded joint is prevented and owing to the nickeliferous surfaces becoming chemically
as well as mechanically combined at a welding heat an absolutely perfect weld is
assured, and it is also possible for different metals which easily combine with nickel
to be welded together.
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
The welding together of similar or dissimilar metals by the process herein described,
namely thoroughly cleaning and then nickel plating the surfaces to be welded together,
heating the parts to a welding heat and rolling, pressing or hammering the same
together with the nickel plated surfaces placed next to each other substantially as
herein described.
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