The labor world. [volume] (Duluth, Minn.) 1896-current, 1905-06-24
SHEFFIELD INVENTORS 7.
FINDS NEW TOOL STEEL
Meets With Remarkable Sue
cess in New Process for
Making Steel Tools.
His Invention is Widely Dis
cussed in the Iron and
Steel Industry.

labor World Correspondence)-Sin
the early days of the eighteenth CEN
fury, when Benjamin Huntsman, Of this
city, and prominent chemists of other
places began to busy themselves with
view to the discovery Of improved
processes for the manufacture of steel,
Shenield has always been In the fore
front Of the steel industry. 1t would
be too much even for a loyal Sheffield
er to claim that everything good in the
way Of steel manufacture has original
ed from Sheffield, but it is impossible
to review the history Of Sheffield's
Industrial career and not discover
abundance of evidence that the city
has been pre-eminent in the production
Of chemists famed for their knowledge
of the inner mysteries of steel manu-
facture and of inventors who have
given to the world Improvement after
improvement which have resulted In
the simpliication and perfection of the
steel industries. OF late years the in
ventor has striven to produce steel
which would adapt itself to use on
machines of much higher cutting speed
than were formerly employed. There
are in Sheffield at the present moment
not few manufacturers who have
achieved very considerable success in
this direction, and, without fattering
Sheffield unduly, it is quite fair to say
that the city has taken very strong
lead indeed in this department Of steel
manufacture. It is not necessary to
deal at any length with the many and
excellent descriptions of high-speed
tool steel emanating from Sheffield
| which are at present upon the market,
but it is exceedingly interesting to note
that new and important development
has recently been made by a Sheffield
firm, the Sheffield Steel Makers, Limit
ed who have recently acquired quite
office at Fitzalan Chambers, Fitzalan
square. This steel will undoubtedly
have an important bearing upon the fu-
ture of the tool steel Industry and the
| firm referred to are to be congratulate
ed upon their achievement
"UnOr'' Steel.
The new steel has been put upon the
market under the name of "Unor.% AS
have pointed out. many experiments
have been made recently with view
to the production Of a rapid cutting
tool STEEL but as a writer IN the Iron
Age states. not enough attention has
hitherto been given to the manufac-
ture Of an intermediate quality, which
is necessary for the requirements OF
by far the greater proportion OF ma
chinery owners. AS one OF the dfrec-
, tors of the Sheffield Steel Makers, Ltd,
pointed out to me yesterday, 1t may
be assumed that of all the tool ma
chinery upon the worlds market, not
even 5 per cent is designed for actual
high speed working. However, present
day necessities are more exacting than
they were formerly, and the general
body of manufacturers, from the small
lest to the largest, have become fasc1-
mated with the idea held out to them
by high speed tool steel manufacturers
of making more of their existing ma
chinery than is possible under present
circumstances. This has led to an In
creased use of the old type Of self
| hardening steel similar in nature to
| the original Mushet brand Of steel.
! which has been. found In a good many
cases to meet nearly all the require
! ments Of the maximum capacity of the
machines of current types.
| referred to informed me that ''Unor"
steel does not resemble any steel which
| has been made so far by producers of
! tool STEEL and it's characteristics mark
| it as an entirely new class of material.
If any comparisons were made. its
cutting and wearing capacities would
| range between that Of the good old
type of original Mushet self-harden-
| ing steel and the best of the modern
! high speed steel.
! "Unor" steel has the property Of air
hardening, and possessing the capa-
cities which have already mentioned
| it will serve equally well for the pro-
cesses of finishing and OF roughing.
The treatment required to manufacture
! tools from steel of this description has
| established a record for simplicity. All
that is necessary to harden 1t Is to