There is a lot of documentation and information
out there on Emil Gathmann. This is in part because
of his inventions, and in part because of the era
he lived in. Most of Emil's inventions were related
to the steel industry, more specifically ingots.
"No steel product is sounder than the ingot from
which it is produced.
"Because this is so, the subject of sound ingots
is of tremendous importance to us all, whether the
product of the ingot is a cable for a Hudson River
Bridge, columns for a Chryslwe Building or a
steering mechanism for a Ford car. Certainly a
railway rail, a boiler plate or any structural
shape subject to serve stresses should be free from
every possible defect.
"Many users of steel demand quality- and quality
at a price. This would be an unreasonable attitude,
many steel producers believe it is, if it were not
for the fact that many plants have proven that the
demand can be met and met with profit.
"By far the greater tonnage of steel produced is
used in the making of products that may prove a
jeopardy to life if unsound. Yet out of the
54,000,000 tons of steel ingots produced in 1929,
only 5,000,000 tons were physically sound, i.e.
properly finished and cast in big-end-up molds. At
many plants the practice of producing big-end-down
ingots is a legacy from a period when the knowledge
of how to prevent unsoundness in steel in tonnage
production was not available. Today, however, ingot
molding is a science and there is little excuse for
any producer who ignores its findings.
"In the selection of a mold for producing sound
steel, no sixth sense is required. A general
knowledge of the mechanism of steel solidification
is desireable, of course, but as a pocket watch may
be selected by the past performance of a particular
make, so with an ingot design. Gathmann designed
big-end-up molds have been successfully employed in
the production of some 30,000,000 tons of sound,
homogeneous steel product, yields from ingot to
bloom averaging eighty-two percent.
"This record, of which we are proud, would have
been impossible without the co-operation of our
clients, who number the leaders in quality steel
making. It is they to whom we are indebted for the
progress made in the art of sound steel production
during the past ten years. That we have risen from
a half million tons of sound steel produced in 1920
to five million tons last year is indicative of
what has been done. It is the writer's belief,
however, that the next ten years will show even
greater progress in quality production than ever
before we can be brought to a realization of its
importance."
-Emil Gathmann. President of
the Gathmann Engineering Co., Baltimore, MD, June,
1930.
What is an Ingot?
During the production of metals, such as steel,
iron, and others, the steel mill takes the ore and
melts it down, and puts the liquid metal in a mold-
an Ingot mold. The result is a mold with a solid
piece of metal in it. The metal in this mold is an
ingot. The ingots are then stripped, or taken out
of the ingot molds, and are then sold to companies
that melt them down into different metal products-
such as steel bar stock, pipes, sheets, and so on.
The metal is almost never heated and melted down as
much as it is during the production of ingots.
Because of this, most of the impurities in a metal
can be traced back to the ingot they came from. The
better the ingot mold, the sounder the ingot it
makes. The sounder the ingot, the less impurities,
and the more strength. Emil Gathmann perfected
ingot molds, and the production of ingots. His son,
Mark Gathmann (an employee of US Steel) took Emil's
designs, and perfected them with his own ideas and
designs, like Mark Gathmann's hot tops.
Emil's patents for the metal industry were
generally patented from the 1900's-1940's. Emil
died in 1949, and would have kept patenting things
beyond then- had he lived longer. He was patenting
things all the way up through his death. To show
Emil's massive amount of patents to the public, the
drawings from each patent will (in time!) be put on
this site.
It should be pointed out that little has changed
in the production of ingots since Emil died. The
largest change was the use of more automatic tasks
(computer controlled tasks, etc.), and the use of
newer, more efficient machines. The actual
production, and styles of the ingot molds have,
however, stayed pretty much the same. The
improvements made by engineers like Emil Gathmann
in the steel & metal industry has allowed us to
enjoy the use of strong steel products. Without
such improvements in the steel industry, many of
today's largest accomplishments would have never
taken place. Space ships that took an American to
the moon and back used solid, and sound metal,
large buildings, like the WTC are & were made
of sound and solid metals. Such improvements in
such fields will be a large factor in insuring
farther progress by mankind.
Want a quick tour of ingot production? Sure you
do..... just click
Here!
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