Amongst those who spoke generously and enthusiastically of Bessemer's
new process was James Nasmyth, to whom the inventor offered one-third
share of the value of the patent, which would have been another fortune
to him. Nasmyth had made money enough by this time, however, and
declined.
In a communication to Nasmyth, Sir Henry Bessemer thanked him for his
early patronage, and described his discovery: 'I shall ever feel
grateful for the noble way in which you spoke at the meeting at
Cheltenham of my invention. If I remember rightly, you held up a piece
of malleable iron, saying words to this effect: "Here is a true British
nugget! Here is a new process that promises to put an end to all
puddling; and I may mention that at this moment there are
puddling-furnaces in successful operation where my patent hollow
steam-rabbler is at work, producing iron of superior quality by the
introduction of jets of steam in the puddling process. I do not,
however, lay any claim to this invention of Mr Bessemer; but I may
fairly be entitled to say that I have advanced along the roads on which
he has travelled so many miles, and has effected such unexpected
results, that I do not hesitate to say that I may go home from this
meeting and tear up my patent, for my process of puddling is assuredly
superseded."'
After giving an account of his failures, as well as successes, Sir Henry
proceeded to say: 'I prepared to try another experiment, in a crucible
having no hole in the bottom, but which was provided with an iron pipe
put through a hole in the cover, and passing down nearly to the bottom
of the crucible. The small lumps and grains of iron were packed round
it, so as nearly to fill the crucible. A blast of air was to be forced
down the pipe so as to rise up among the pieces of granular iron, and
partly decarburise them. The pipe could then be withdrawn, and the fire
urged until the metal with its coat of oxide was fused, and cast-steel
thereby produced.
'While the blowing apparatus for this experiment was being fitted up, I
was taken with one of those short but painful illnesses to which I was
subject at that time. I was confined to my bed, and it was then that my
mind, dwelling for hours together on the experiment about to be made,
suggested that instead of trying to decarburise the granulated metal by
forcing the air down the vertical pipe among the pieces of iron, the air
would act much more energetically and more rapidly if I first melted the
iron in the crucible, _and forced the air down the pipe below the
surface of the fluid metal_, and thus burnt out the carbon and silicum
which it contained.
Public-domain text, read in full here on John Shaqi.
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