Improvements in Bronze Alloys.
Year: 1892

page_text: Date of Application, 12th Aug., 1892
Complete Specification Left, 11th May. 1893-Accepted, 24th June, 1893
PROVISIONAL SPECIFICATION.
Improvements in Bronze Alloys.
We, ALFRED KIRBY HUNTINGTON, of King's College, Strand, in the County
of London, Professor of Metallurgy, and REUBEN THOMAS PRESTON of the
firm of J. Stone & Co., Deptford, Kent, Engineers, do hereby declare the nature
of this invention to be as follows:-
This invention relates to the manufacture of bronze alloys having great strength and
ductility. The alloy consists mainly of copper and zinc to which are added various
proportions of ferro manganese and nickel along with small proportions of
de-oxidising and fluxing agents such as sodium or potassium or magnesium.
Aluminium or silicon may also be used for this purpose, or in larger quantity to
form a sensible portion of the alloy. Tin may also be used in a proportion seldom
exceeding one per cent.
It is preferred first to alloy. the ferromanganese and nickel, and to melt that
alloy with the copper, adding then the zinc along with the deoxidating agents and
the tin if it is employed. Instead of the ferromanganese, iron in almost the same
proportion may be employed. For some purposes the proportion of zinc may be
largely reduced or the zinc may be entirely omitted, the quantity of iron or ferro-
manganese and nickel being then increased.
Lead may be present to a small amount occurring as an impurity in the zinc or
copper.
Dated this 12th day of August 1892.
ABEL & IMRAY,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Bronze Alloys.
We, ALFRED KIRBY HUNTINGTON, of King's College, Strand, in the County
of London, Professor of Metallurgy, and REUBEN THOMAS PRESTON, of the
firm of J. Stone & Co., Deptford, Kent, Engineers, 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 :-
This invention relates to the mauufacture of bronze alloys having great strength and
ductility. The alloy consists mainly of copper and zinc to which are added various
proportions of ferro manganese and nickel along with small proportions of
de-oxidising and fluxing agents such as sodium or potassium or magnesium.
Aluminium or silicon may also be used for this purpose, or in larger quantity to
form a sensible portion of the alloy. Tin may also be used in a proportion seldom
exceeding one per cent.
It is preferred first to alloy the ferromanganese and nickel, and to melt that alloy
with the copper, adding then the zinc along with the deoxidating agents and the tin
if it is employed.
Instead of the ferromanganese, iron in almost the same proportion may be
employed.
For some purposes the proportion of zinc may be largely reduced or the zinc may
be entirely omitted, the quantity of iron or ferromanganese and nickel being then
increased.
Lead may be present to a small amount occurring as an impurity in the zinc or
copper.

page_text: The proportions of the alloyed metals may be varied. We have found the
following proportions suitable for many purposes. Copper 55 parts, tin 40, iron 1,
manganese 3, nickel 1, with or without about 1 part tin.
Copper 82, iron 8, nickel 10.
In both cases there may be added a small quantity of deoxidising metal such as
sodium or aluminium. When it is desired that aluminium should form part of the
alloy, from 1 to 11 per cent. may be added.
Silicon may also be introduced into the alloy by employing silicious iron.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed I declare that what 1
claim is:
:-
1. An alloy consisting of copper, zinc, iron, manganese and nickel, substantially
as herein described.
2. An alloy consisting of copper, iron and nickel, substantially as described.
Dated this 11th day of May 1893.
ABEL & IMRAY,
Agents for the Applicants.