IMPROVEMENTS IN THE MANUFACTURE OF STEEL WIRE CARDS
Year: 1878

page_text: LETTERS PATENT to William Frederick Bateman, of Low Moor, in the County
of York, Card Manufacturer, for the Invention of. "IMPROVEMENTS IN THE
MANUFACTURE OF STEEL WIRE CARDS."
Sealed the 22nd November 1878, and dated the 17th September 1878.
PROVISIONAL SPECIFICATION left by the said William Frederick Bateman
at the Office of the Commissioners of Patents on the 17th September 1878.
WILLIAM FREDERICK BATEMAN, of Low Moor, in the County of York, 'Card
Manufacturer. "IMPROVEMENTS IN THE MANUFACTURE OF STEEL WIRE CARDS."
This Invention consists of the use and application of tempered steel wire for the
manufacture of cards, the wire of which is first hardened by being cool'd or chil'd
in the ordinary manner, and then tempered or softened to such a degree that it will
bend round a crown to form the staple of a card tooth without breaking at the
corners, but has still the power, tenacity, and elasticity of tempered steel, thus
making a better and more durable card than that made from ordinary steel wire,
and also is superior to what is called "stiff drawn steel wire," which stiffness is
imparted to the wire by the method of drawing; also it is a decided improvement
upon the ordinary iron wire cards so generally in use hitherto.
This card is intended to suppy a want of an intermediate. character, 'viz.,
possessing in a more modefied degree (form) the advantages of my Patent, No. 4610,
dated 5th day of December 1877, for "Improvements in the Method of and
Apparatus for Manufacturing Cards out of Steel Wire," which consists of using a
much harder tempered wire, which has to be softened with a gas flame or other
heated material at intervals corresponding with the place where the crown will be
when the wire shaft or blank is cut off and made into a tooth, Objection has been
made to the above method (Patent No. 4610) on the ground of cost in the manu-
facture, although at the same time it is admitted on all hands that this card has
advantages possessed by no other in use, viz., the extreme hard points and the
comparatively soft crown which will bend before it will break.

page_text: In my present improvement instead of using this very hard tempered wire I
make the wire (by the ordinary process of tempering) so low or soft in the temper.
that when fed into an ordinary card-setting machine it will double round the crown
to form the staple without the use or application of a flame or other heated material
to soften it, and thereby effect a saving both of heating material and mechanical 5
labour which will facilitate the production in a marked manner, and also considerably
cheapen the article.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Frederick Bateman in the Great Seal Patent Office on the
15th March 1879.
WILLIAM FREDERICK BATEMAN, of Low Moor, in the County of York, Card
Manufacturer. "IMPROVEMENTS IN THE MANUFACTURE OF STEEL WIRE CARDS."
This Invention consists of the use and application of tempered steel wire for the
manufacture of cards, the wire of which is first hardened by being cool'd or chill'd
in the ordinary manner, and then tempered or softened to such a degree that it will
bend round a crown to form the staple of a card tooth without breaking at the
. corners, but has still the power, tenacity, and elasticity of tempered steel, thus
making a better and more durable card than that made from ordinary steel wire,
and also is superior to what is called "stiff drawn steel wire," which stiffness is
imparted to the wire by the method of drawing; also it is a decided improvement
upon the ordinary iron wire cards so generally in use hitherto.
I can also use mild or low carbon steel for the above purpose, in which case the
wire will not require tempering or letting down as the hardening process of such
steel imparts sufficient stiffness without brittleness to the wire. My object can be
also be attained by the use of common iron wire, such as is ordinarily used for the
manufacture of cards by case-hardening such wire by means of charcoal, prussitate
of potash, or other carbonous hardening material which is commonly used for case-
hardening iron.
This card is intended to supply a want of an intermediate character, viz.,
possessing in a more modified degree from the advantages of my Patent, No. 4610,
dated Fifth day of December, One thousand eight hundred and seventy-seven, for
improvements in the method of and apparatus for manufacturing cards out of steel.
wire, which consists of using a much harder tempered wire, which has to be reduced
in temper by means of a gas flame or other heated material at intervals corresponding
with the place where the crown will be when the wire shaft or blank is cut off and
made into a tooth. Objection has been made to the above method (Patent No. 4610)
on the ground of cost of manufacture, although at the same time it is admitted on
all hands that this card has advantages possessed by no other in use, viz., the
extreme hard joints and the comparatively soft crown which will bend before it
will break.

page_text: In my present improvement instead of using this very hard tempered wire, I
make the wire (by the ordinary process of tempering) so low or soft in the temper
that when fed into an ordinary card-setting machine it will double round the
crown to form the staple without the use or application of a flame or other heated
material to soften it, and thereby effect a saving both of heating material and
mechanical labour, which will facilitate the production in a marked manner, and
also considerably cheapen the article.
Having thus particularly described my said Invention, and the manner of per-
forming the same, I have to state that what I believe to be novel and original, and
claim as the Invention secured to me by the herein-before in part recited Letters
Patent is,―
The application of tempered steel wire and of hardened mild or low carbon steel,
substantially for the purpose herein-before described.
The application of ordinary iron wire after the same has been submitted to the
process of case hardening or other ordinary means, by which a thin coating of steel
is imparted to the surface of the iron or circumference of the wire, substantially for
the purpose herein-before described.
In witness whereof, I, the said William Frederick Bateman, have hereunto set
my hand and seal, this Fourteenth day of March, in the year of our Lord
One thousand eight hundred and seventy-nine.
'
WILLIAM FREDERICK BATEMAN. (L.S.)
Witness,
JOHN WAUGH,
Engineering & Patent Office,
Bradford,
Yorks.