Year: 1887

page_text: Date of Application, 9th June, 1887
Complete Left, 6th Mar., 1888
Complete Accepted, 6th Apr., 1888
I, ANDREW LINMERE DOWIE, of Bellevue Cottage, Garngad Hill, Glasgow, in the
County of Lanark, North Britain, Chemical Metallurgist, do hereby declare the nature
of this Invention to be as follows, that is to say :-
My said Invention has for its object by treating iron in an improved manner to
obtain a steel-like metal or compound which by variations in the process may have a
hard or mild or intermediate character and which will bave valuable properties and
be suitable for many useful applications. The treated metal may be shaped into various
articles by casting, and when cast the articles are annealed if required, the annealing
process being a specially improved one.
In carrying out my Invention I first melt certain combinations of castirons with
oyster or other marine shells. For a hard metal I take about 8 parts Cleator-Moor iron,
5 parts Lorin iron, white, grey, or mottled, 4 parts Middlesburgh iron, 2 parts Swedish
iron, 2 parts scrap steel, and 20 parts oyster or marine shells. The mixture is melted
in an ordinary cupola melting furnace and the molten metal is run into pigs. These
pigs are remelted with about twice the quantities of the castirons and scrap steel first
used (without marine shells); and when this second mixture is melted there is stirred
into it for every hundredweight of metal 3 pounds marine shells and 3 to 4 ounces
of a mixture consisting of 1 part seaweed dried and ground, 1 part magnesia, 1 part
bromine, and 2 parts manganese. The ingredients being well mixed and thoroughly
melted the metal is ready for casting into the required articles.
In the annealing process the cast articles are packed in annealing pans in a mixture
consisting of about 20 parts ironstone mine dust, 2 parts ground iron ore, 2 parts
ground limestone, and part bean meal. The annealing is effected by the appli-
cation of heat in the ordinary way the heat being obtained with ordinary fuel, oil,
or gas.
If a milder or softer metal is required Coltness Hoematite castiron is added in
suitable quantity to the other castirons bereinbefore specified.
EDMUND HUNT,
Applicant's Agent...

page_text: CUMI LEIE DI DUITIC
Improvements in Treating Iron and Castings thereof.
I, ANDREW LINMERE DOWIE, of Bellevue Cottage, Garngad Hill, Glasgow, in the
County of Lanark, North Britain, Chemical Metallurgist, 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, that is to say
My said Invention has for its object, by treating iron in an improved manner to
obtain a steel-like metal or compound, which by variations in the process may have a
hard or mild or intermediate character; and which will have valuable properties and be
suitable for many useful applications. The treated metal may be shaped into various
articles by casting; and when cast the articles are annealed if required, the annealing
process being a specially improved one.
In carrying out my Invention I first melt certain combinations of castirons with..
oyster or other marine shells. For a hard metal I take about parts Cleator-Moor
iron, 5 parts Lorin iron, white, grey, or mottled, 4 parts Middlesbrough iron, 2 paris
Swedish iron, 2 parts scrap steel, and 20 parts oyster or marine shells. The mixture
is melted in an ordinary cupola melting furnace and the molten metal is run into pigs.
These pigs are remelted with about twice the quantities of the castirons and scrap steel
used (without marine shells) and when this second mixture is melted there is stirred
into it, for every hundredweight of metal 3 pounds marine shells, 3 to 4, ounces of a
mixture consisting of 1 part seaweed dried and ground, 1 part magnesia, 1 part
bromine, and 2 parts manganese. The ingredients being well mixed and thoroughly
melted the metal is ready for casting into the required articles.
In practice the iron or metal may be kept in a melted state throughout the process
by being run from the cupola into an air or crucible furnace to be treated by the
second mixture as hereinbefore described. The metal prepared by my improved
processes is valuable for all kinds of hard castings, and especially for articles to bo
subject to attrition by sand or the like. The metal may also be cast into bars to be
used for forming cutting tools. Articles of various sizes and weights may equally well
be cast of the metal, from a few pounds up to thirty tons; and it may be mentioned
that amongst other things the metal is suitable for cylinders, pistons, bearings,
propellers, shot, and various light and heavy parts of machinery.
In the annealing process the cast articles are packed-in annealing pans in a mixture
consisting of about 20 parts ironstone mine dust, 2 parts ground iron ore, 2 parts
ground limestone and i part bean meal. The annealing is effected by the appli-
cation of heat in the ordinary way, the heat being obtained with ordinary fuel, oil,
or gas.
If a milder, or softer metal is required Coltness Hoematite castiron is added in
suitable quantity to the other castirons herein before specified.

page_text: 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 :-
:-
1-Obtaining steel-like metals or compounds of hard, mild, or intermediate
character, by melting combinations of castirons such as are hereinbefore specified, with
marine shells, and combining with the metal additional quantities of the said castirons
and other specified ingredients substantially as hereinbefore described.
2-In annealing castings of the improved or similar metal, packing the articles in a
mixture consisting of the ingredients hereinbefore specified.
EDMUND HUNT,
Per Pro, David Ferguson,
Applicant's Agent.