AN IMPROVED COMBINATION OF TWO METALS OR A METAL AND AN ORE TO BE USED IN THE MANUFACTURE OF CUTTERS EMPLOYED IN MACHINES FOR PLANING, TURNING, BORING, AND PROVISIONAL SPECIFICATION
Year: 1875

page_text: ..LETTERS PATENT to James Lynam, of the City of Manchester, in the
County of Lancaster, for the Invention of "AN IMPROVED COMBINATION
OF TWO METALS OR A METAL AND AN ORE TO BE USED IN THE MANUFACTURE
OF CUTTERS EMPLOYED IN MACHINES FOR PLANING, TURNING, BORING, AND
PROVISIONAL SPECIFICATION left by the said James Lynam at the
Office of the Commissioners of Patents, with his Petition, on the
2nd April 1875.
I, JAMES LYNAM, of the City of Manchester, in the County of.
Lancaster, do hereby declare the nature of the said Invention for
** AN IMPROVED COMBINATION OF TWO METALS OR A METAL AND AN ORE TO BE
USED IN THE MAnufacture of CutTERS EMPLOYED IN MACHINES FOR PLANING,.
TURNING, BORING, AND SURFACING METALS, AND FOR ALL DESCRIPTIONS OF MACHINE
TOOLS," to be as follows:-
This Invention relates to cutters used in machines for planing,-
turning, boring, and surfacing metals, and for all descriptions of

page_text: machine tools, and consists in melting and mixing together in a molten
state grey cast iron and tungsten, or grey cast iron and tungstate of iron,
the proportions of the grey cast iron and tungsten being about nine
pounds of iron to about one ounce of tungsten, and for the grey cast iron
and tungstate of iron the proportion is about nine pounds of iron to
about two ounces of tungstate of iron.
The iron and tungsten or the iron and tungstate of iron are melted
and combined together in crucibles heated in the ordinary manner, and
when the substances are properly compounded or combined the mixture
is run into ordinary cast-iron chills, the interiors of which are made of
the required shapes of the cutters or cutting tools.
SPECIFICATION in pursuance of the conditions of the Lotters Patent,
filed by the-said James Lynam in the Great Scal Patent Office on
the 2nd October 1875.
TO ALL TO WHOM THESE PRITENTS SHALL COME, I, JAMES
LYNAM, of the City of Manchester, in the County of Lancaster, Iron
Moulder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of April, in the year
of our Lord One thousand eight hundred and seventy-five, in the
thirty-eighth year of Her reign, did, for Herself, Ier heirs and suc-
cessors, give and grant unto me, the said James Lyuam, Her special
license that I, the said James Lynam, my executors, administrators,
and assigns, or such others as I, the said James Lynam, my exccutors
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, excrcise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVE.
MENTS IN THE MANUFACTURE OF CUTTING TOOLS USED IN MACHINES FOR
PLANING, TURNING, BORING, AND SURFACING METALS, OR OTHER SIMILAR
PURPOSES," upon the condition (amongst others) that I, the said James
Lynam, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should par-

page_text: ticularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to
be filed in the Great Scal Patent Office within six calendar mouths
next and immediately after the date of the said Lotters Patent.
NOW KNOW YE, that I, the said James Lynam, do hereby declaro
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement (that is to say) :—
This Invention relates to cutting tools used in machines for planing,
turning, boring, and surfacing metals or other similar purposes, and
consists in melting and combining together in a molten state grey cast
iron and tungsten, or grey cast iron and tungstate of iron, the proportions
of the grey cast iron and tungsten being about nine pounds of iron to
about one ounce of tungsten, or about two ounces of tungstate of iron to
ninc pounds of grey cast iron.
The iron and tungsten or the iron and tungstate arc melted and
combined together in crucibles heated in the ordinary manner, and when
the metals are properly compounded the mixture is run into ordinary
cast-iron chills the interiors of which are made of the shapes of the
required planing, turning, boring or other cutting tools.
Having now described the nature and particulars of my said Invention
and the manner in which the same is to be performed, I desire it to be
understood that I claim, the use of the hard metallic compounds formed
respectively by the combination of grey cast iron with tungsten, or grey
cast iron with tungstate of iron in about the proportions herein-before
described for the manufacture of cutting tools employed in machines for
planing, turning, boring, and surfacing metals, and for all descriptions
of machine tools.
In witness whereof, I, the said James Lynam, have hereunto
set my hand and seal, this Thirtieth day of September, in