Certain New or Improved Metallic Alloys.
Year: 1890

page_text: Date of Application, 18th Sept., 1890
Complete Specification Left, 18th June, 1891-Accepted, 18th July, 1891
PROVISIONAL SPECIFICATION.
Certain New or Improved Metallic Alloys.
We FREDERICK WILLIAM MARTINO of No. 199 Arundel Street Sheffield in
the County of York, German Silver Manufacturer and FRANCIS RICHARD
MARTINO, of No. 38 Princip Street, Birmingham in the County of Warwick
German Silver Manufacturer do hereby declare the nature of this invention to
be as follows:-
:—
The said invention consists of metallic alloys having the composition hereinafter
described which said alloys are specially fitted for the manufacture of boring and
cutting tools. Tools made of the said alloys have the hardness of tools made of
hardened and tempered steel, and are not liable to lose their hardness in use,
by the heat of friction as tools made of ordinary steel are.
The said alloys are also of use generally for such purposes as hardened and
tempered steel is applied to.
The alloys constituting the said invention have the same general composition and
properties but vary in the quantity or percentage of their constituents to suit them
for special purposes.
The following is the composition of our alloy made according to our invention
and suitable for the manufacture of boring tools such as drills, milling-cutters,
rhymers and the like.

page_text: and employ for that purpose graphite crucibles and cover the contents of the
crucibles with stick charcoal or fragments of charcoal and with thin layers of
dried or calcined borax. We prefer to melt the pig iron and tungsten first and
to add the other materials to the melted mixture. After having thus made the
aforesaid alloy in graphite crucibles, we remelt the same in clay crucibles, together
with the bar iron, adding afterwards nickel, copper and aluminium in the pro-
portions described. We prefer to add the nickel and copper in the form of an
alloy instead of adding them separately that is, we prefer to employ an alloy of
nickel and copper having the relative proportions indicated.
We cover the alloy in the clay crucibles with stick charcoal or fragments of
charcoal but we do not employ any flux in this process.
The alloys constituting the said inventions may be cast in sand moulds, into
drills, cutters and other articles in a manner similar to that in which articles in
steel are cast. The said alloys have the hardness of hardened and tempered steel
without the application of the hardening and tempering process and the hardness
of tools made of the said alloys is not interfered with by heating them or by the
heat developed by friction in the use of the said tools.
Dated the 18th day of September 1890.
W. T. WHITEMAN,
Agent for the Applicants.
Certain New or Improved Metallic Alloys.
We FREDERICK WILLIAM MARTINO of No. 199 Arundel Street Sheffield in
the County of York German Silver Manufacturer and FRANCIS RICHARD
MARTINO of No. 38 Princip Street Birmingham in the County of Warwick
German Silver Manufacturer do hereby declare the nature of the said invention
and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-.
The said invention consists of metallic alloys having the composition hereinafter
described which said alloys are specially fitted for the manufacture of boring and
cutting tools. Tools made of the said alloys have the hardness of tools made of
hardened and tempered steel and are not liable to lose their hardness in use by the
heat of friction as tools made of ordinary steel are.
The said alloys are also of use generally for such purposes as hardened and
tempered steel is applied to.
The alloys constituting the said invention have the same general composition and
properties but vary in the quantity or percentage of their constituents to suit them
for special purposes.
The following is the composition of an alloy made according to our invention and
suitable for the manufacture of boring tools such as drills milling-cutters rhymers
and the like.

page_text: The following is the composition of an alloy made according to our invention and
suitable for the manufacture of nail-cutting blades, cutting blades for machines,
cutting out tools and the like.
In making either of the alloys described in the foregoing formulae-we melt the
following metals first; namely: pig iron, ferro-manganese, chromium and tungsten
and employ for that purpose graphite crucibles and cover the contents of the
crucibles with stick charcoal or fragments of charcoal and with thin layers of
dried or calcined borax. We prefer to melt the pig iron and tungsten first and to
add the other materials to the melted mixture.
After having thus made this alloy in graphite crucibles we remelt the same in
clay crucibles together with the bar iron adding afterwards the nickel copper
and aluminium in the proportions described. We prefer to add the nickel and
copper in the form of an alloy instead of adding them separately that is we prefer
to employ an alloy of nickel and copper having the relative proportions indicated.
We cover the alloy in the clay crucibles with stick charcoal or fragments of
charcoal with or without flux.
The alloys constituting the said invention may be cast in sand moulds into drills
cutters and other articles in a manner similar to that in which articles in steel are
cast. The said alloys have the hardness of hardened and tempered steel without
the application of the hardening and tempering process and the hardness of tools
made of the said alloys is not interfered with by heating them or by the heat
developed by friction in the use of the said tools.
Although we have described the proportions of the ingredients in the metallic
alloys constituting the said invention which we have found in practice to answer
well yet we wish it to be understood that we do not limit ourselves to the precise
particulars hereinbefore given as the said particulars may be slightly varied
without materially affecting the properties of the said alloys. Neither do we limit
ourselves to the precise details hereinbefore given in conducting the manufacture
of the said alloys as the process or processes may be somewhat varied without
materially affecting the results.
Having now particularly described and ascertained the nature of the said inven-
tion and the manner in which the same is to be performed we declare that we
claim as the said invention :-
New or improved metallic alloys having substantially the compositions herein-
before given.
W. T. WHITEMAN,
Agent for the Applicants.