Year: 1886

page_text: Date of Application, 27th May, 1885
Complete Left, 23rd Mar., 1887.
Complete Accepted, 26th Apr., 1887. .
I, THORSTEN NORDENFELT of 53 Parliament Street in the City of Westminster Civil
Engineer do hereby declare the nature of this invention to be as follows :-
My invention consists in forming chain cables of cast steel or cast wrought iron in
the following manner, I first cast a number of separate steel or wrought-iron links, and
then prepare a number of patterns or models of links, of lead, tin, or other fusible
metal, or rosin, pitch and tar, wax, tallow or other like substances that can easily be
melted into a liquid state, but that are tolerably firm and strong in. the solid state, or I
use patterns or models formed of ice, which are made in halves, so that they may be
threaded or passed into the previously formed steel or wrought-iron links, and then
have proper moulding sand, loam or other moulding material rammed or run in around
them and the steel links, in a suitable moulding box, after which the whole is to he
heated to a proper temperature for receiving the liquid steel or iron, and there being
small holes left below each pattern or model, the material composing the pattern of the
link will run out, as it becomes liquid, and thus leave an open space for the liquid steel
or wrought iron to be run in from proper holes or gits at the top.
Or in place of casting the alternate links, only, by the above described method,
cast all the links in their proper places.
İ
In some cases, in place of forming the whole of the link of one section, I reduce
the section of the sides of the link somewhat, as those parts are always stronger than
the ends, and have less wear upon them.
CARPMAEL & Co.,
Agents for the Applicant.

page_text: I, THORSTEN NORDENFELT of 53 Parliament Street in the City of Westminster Civil
Engineer, 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:-
My invention consists in forming chain cables of cast steel or cast wrought iron in
the following manner :-I first cast a number of separate steel or wrought iron links,
and then prepare a number of patterns or models of links, of lead, tin, or other fusible
metal, or alloy, or rosin, pitch, and tar, wax, tallow, or other like substances that can
easily be melted into a liquid state, but that are tolerably firm and strong in the solid
state, or I use patterns or models formed of ice. The patterns or models are made in
halves, so that they may be threaded or passed into the previously formed steel or
wrought iron links, and then have proper moulding sand, loam, or other moulding
haterial rammed or run in around them and the steel links, in a suitable moulding box,
after which the whole is to be heated to a proper temperature for receiving the liquid
steel or iron, and there being small holes left below each pattern or model, the material
composing the pattern of the link will run out, as it becomes liquid and thus leave an
open space in the mould for the liquid steel or wrought iron to be run in through
proper holes or gits formed at the top. The small holes at the bottom through which
the pattern or model when melted is run off are sufficiently small to prevent the flow
of steel through them.
Or, in place of casting the alternate links only, by the above described method, I
cast all the links in the same manner in their proper places.
In some cases, in place of forming the whole of the link of one section, I reduce
the section of the sides of the link somewhat, as those parts are always stronger than
the ends, and have less wear upon them.
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 1 claim is :-
The casting of chain cables of cast steel or cast wrought iron in the manner herein
described.
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