Improvements in the Method of and Apparatus for Hardening, Tempering, and Tinning Steel Wire.
Year: 1895

page_text: Date of Application, 20th Apr., 1895
Complete Specification Left, 20th Feb., 1896-Accepted, 11th Apr., 1808
PROVISIONAL SPECIFICATION.
Improvements in the Method of and Apparatus for Hardening,
Tempering, and Tinning Steel Wire.
We, JOHN HENRY ROBERTS, of Burnett Street, Bradford, in the County of
York, Card and Wire Manufacturer, and JOSEPH COOPER, Junior, of Exchange
Works, Bradford, aforesaid, Wool Comber, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in the method of and apparatus for
hardening, tempering and tinning steel wire employed in the manufacture of wire
cards and other similar wire.
For this purpose we heat the wire in the ordinary manner by passing it through
heated pipes or tubes but instead of passing the tubes into the hardening bath we
may enclose the end of the tubes by an air-tight hood or cover the front of which
dips into or below the hardening liquor. A sheet of glass may be let into the
hood so that it may be seen at a glance whether the wire passing beneath is
heated to the required hardening heat.
The hardening bath may consist of a plate or shallow bath along which the
hardening liquor continuously flows and falls close to the ends of said pipes or
tubes into a recess below the said hood or cover from which it is pumped back
onto the plate. We may use glycerine for the hardening liquor or a mixture of
glycerine and any other suitable liquid.
The wire is drawn out of the hardening bath through fine slits or other suitable
openings in the end of the bath, and any liquor passing through with them is
collected below. The hardening liquor is wiped off the wire by means of one or
more strips of the foundation of card clothing or other suitable material preferably
doubled and placed at the end of the bath and these strips are pierced by the wire
which is drawn through them.
.
°
The wire is then drawn through the tempering bath which may consist of molten
lead and thence through a cooling box or chamber through which a current of air
is forced to cool the wire before it passes into the "pickling" bath preparatory to
being "tinned" or plated..
ملقى
All 1905
DRACUP & NOWELL;. ·
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in the Method of and Apparatus for Hardening,
Tempering, and Tinning Steel Wire.
We,
JOHN HENRY ROBERTS, of Burnett Street, Bradford, in the County of
York, Card and Wire Manufacturer, and JOSEPH COOPER, Junior, of Exchange
Works, Bradford, aforesaid, Wool Comber, 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 :-
This invention relates to improvements in the method of and apparatus for
hardening, tempering and tinning steel wire employed in the manufacture of wire
cards and other similar wire.

page_text: For this purpose we heat the wire in the ordinary manner by passing it through
heated pipes or tubes but instead of passing the tubes into the hardening bath we
may enclose the end of the tubes by an air tight hood or cover the front of which
dips into or below the hardening liquor. A slieet of glass may be let into the hood
so that it may be seen at a glance whether the wire passing beneath is heated to
the required tempering heat.
The hardening bath may consist of a plate or shallow bath along which the
hardening liquor continuously flows and falls close to the ends of the said pipes or
tubes into a recess below the said hood or cover from which it is pumped back onto
the plate.
The wire is drawn out of the hardening bath through fine slits or other suitable
openings in the end of the bath, and any liquor passing through with them is
collected below. The hardening liquor is wiped off the wire by means of one or
more strips of the foundation of card clothing or other suitable material preferably
doubled and placed at the end of the bath and these strips are pierced by the wire
which is drawn through them.
The wire is then drawn through the tempering bath which may consist of molten
lead and thence through a cooling box or chamber through which a current of air
is forced to cool the wire before it passes into the "pickling" bath preparatory to
being "tinned " or plated.
Reference is to be had to the accompanying sheet of drawings forming a part
of this Specification, in which similar letters of reference indicate corresponding
parts in each of the figures.
Figure 1, represents a sectional elevation of such parts of the apparatus as are
necessary to fully illustrate our invention.
Figure 2, represents a plan view of the same.
A, represents the ends of the tubes in which the wire W is heated, the tubes
pass through the end B of the hardening bath B 2 into the chamber B 3 covered
by a hood consisting of an inclined piece of glass B 4 the top and sides of which
are connected by an air tight joint to the walls of the chamber B 3 and the front
edge dips down into the hardening liquor L flowing from the feed pipe C along the
inclined bottom of the bath into the chamber B3. The liquor escapes from the
chamber B.3 by the pipe C 2 and is circulated in the ordinary way.
A trap C3
is made in the pipe C 2 to exclude air. C4 is an air opening in the trap to prevent
the "seal" being syphoned off.
Slits D are made in the opposite end B6 of the bath B2 by which the wire
leaves and the wire is preferably passed through a doubled piece of card
foundation E to wipe off as much of the hardening liquor as possible. The liquor
thus wiped off falls into the depression B 8 and flows from thence by the pipe B 9
which may be connected to the pipe C 2.
Figure 3, represents a side view on a larger scale of a doubled piece of card
clothing foundation with the wire passing through it. Two or more pieces are
preferably employed in this way for each wire and the several pieces are preferably
held a little distance apart in any convenient manner."
The wire passes directly into the usual lead or other tempering bath K and
from thence through the box or chamber H which is preferably open at the top
and is provided with a passage J below through which air is forced or drawn with
the object of rapidly cooling the wire.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
⚫claim is :
F
1. The combination with a wire hardening bath, of a chamber from which air
is excluded which chamber is located between the ends of the furnace pipes A. and
the hardening liquor, substantially as herein shown and described and for the
purpose specified.
.
2. The use of doubled card-clothing foundation or the like arranged so that the

page_text: wire is passed through it to wipe off the hardening liquor, substantially as herein
shown and described.
3. The combination with a wire tempering bath and a pickling bath, of a.
cooling chamber located between said baths and through which chamber a current.
of air is passed to cool the wire, substantially as herein shown and described.
Dated this 18th day of February 1896.
DRACUP & NOWELL,
Bradford, Patent Agents.