Year: 1894

page_text: Date of Application, 21st Aug., 1894
Complete Specification Left, 21st May, 1895-Accepted, 29th June, 1895
MC moy.
I, ROBERT AUSTIN SMITH of 9 St. Margaret's Terrace, Plumstead Common
in the County of Kent, Metal Founder, do hereby declare the nature of this
invention to be as follows:-
This invention consists in the formation of a new alloy.
I add to well known proportions of copper, and tin, or of copper, zinc and
aluminium, or of copper tin and zinc bronzes as well as of copper, nickel and zinė
such as is well known in the formation of nickel silver or German silver, chromium
in the form of chromium ferro-chromium or otherwise, such as oxides, in
proportions of from one-half per cent. to seven and one half per cent. according to
the nature and requirements of the alloy to be made, and for the specified purpose
for which the said alloy is required.
By preference I make a mixing of copper and chromium, so rich in chromium
that a given quantity thereof added to my alloys of copper and tin, or copper, tin
and zinc, or copper zinc and aluminium will give me the sufficient quantity of the
chromium to the alloy determined on.
The same process of making a mixing rich in chromium for the cupro-nickel
alloys, consists of copper nickel and chromium as in the copper and chromium only.
By my process as described 1 claim the formation of an alloy hitherto unknown.
Dated this 21st day of August 1894.
S. S. BROMHEAD,
97 Newgate Street, Loudon, E.C., Agent for Applicant.
I, ROBERT AUSTIN SMITH, of 9 St. Margaret's Terrace, Plumstead Common,
in the County of Kent, Metal Founder, 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 consists in the formation of a new alloy.
I add to well known proportions of copper and tin, or of copper zinc and
aluminium, or of copper tin and zinc bronzes, as well as of copper nickel and zinc,
such as is well known in the formation of nickel silver or German silver, chromium
in the form of chromium-ferro-chromium or otherwise, such as oxides, in the
proportions of from a half per cent., to seven and a half per cent., according to the
nature and requirements of the alloy to be made, and for the specified purpose for
which the said alloy is required.
By preference I make a mixing of copper and chromium, so rich in chromium
that a given quantity thereof added to alloys of copper and tin, or copper tin and
zinc, or copper zinc and alluminium, will give me the sufficient quantity of the
chromium for the alloy determined on.

page_text: The same process of making a mixing, rich in chromium, for the cupro-nickel
alloys, consists of mixing copper, nickel and chromium, as in the copper and
chromium only.
The alloy is prepared by melting the metals together in a crucible in the
usual way.
By this process as described, I claim the formation of an alloy hitherto unknown,
especially suited for bearings of the heaviest description, and for all frictional
parts of machinery.
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 ;
A new alloy consisting of the addition of chromium in some form, such as ferro-
chromium in the form of an oxide or otherwise, added to and admixed with well
known alloys, such as, copper and tin, or copper zinc and aluminium, or copper tin
and zinc, or copper nickel and zinc, in varying proportions of from a half per cent.
to seven and a half per cent., according to the specific purpose in view, or the
requirements of the case, as herein described and set forth."
5333
S. S. BROMHEAD,
97 Newgate Street, E.C., Agent for Applicant.