IMPROVEMENTS IN THE DRAWING OF FLAT OR NEARLY FLAT WIRE, OR OF TRIANGULAR OR SECTORAL WIRE
Year: 1872

page_text: LETTERS PATENT to John Holt, of Rochdale, in the County of Lan-
caster, Card Manufacturer, for the Invention of "IMPROVEMENTS IN
THE DRAWING OF FLAT OR NEARLY FLAT WIRE, OR OF TRIANGULAR OR
SECTORAL WIRE."
Sealed the 26th November 1872, and dated the 28th September 1872.
PROVISIONAL SPECIFICATION left by the said John Holt at the
Office of the Commissioners of Patents, with his Petition, on the
28th September 1872.
I, JOHN HOLT, of Rochdale, in the County of Lancaster, Card Manu-
facturer, do hereby declare the nature of the said Invention for "Ix-
PROVEMENTS IN THE DRAWING OF FLAT OR NEARLY FLAT WIRE, OR OF TRIANGULAR
OR SECTORAL WIRE," to be as follows:-
My Invention relates to the drawing of flat or nearly flat, or trian-
gular, or sectoral wire, that is to say, of wire which is produced in the
form of a riband, or is made of an elliptical, or triangular, or other
similar section, and has for its object to produce such wire more readily

page_text: than can be done when the ordinary draw plates or wordles are alone
used. For this purpose I draw the wire through a draw plate or
perforated guide plate, and thence between the smooth edges of the two
hardened steel plates. The said edges of the steel plates are suitably
rounded or shaped, and the said plates are fitted in a frame, and the
distance between the said edges is capable of adjustment. The said
plates may be so adjusted as that the said edges shall be slightly nearer
to each other at one end so that the wire may be more or less flattened
or shaped according as it is drawn through one hole or another in the
said guide plate, or according to the number of holes through which the
said wiro is successively drawn, or the said plates may be so adjusted as
that the edges thereof shall be parallel to each other.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Holt in the Great Seal Patent Office on
the 13th March 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, Jonn
HOLT, of Rochdale, in the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of September, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Holt, Her special license that
I, the said John Holt, my executors, administrators, and assigns, or
such others as I, the said John Holt, my executors, administrators,
and assigns, should at any time agree with, and no others, from time
to time and at all times thereafter during the term therein expressed,
should and lawfully might make, usc, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN THE DRAWINg of Flat
OR NEARLY FLAT WIRE, OR OF TRIANGULAR OR SECTORAL WIRE," upon the
condition, amongst others, that I, the said John Holt, by an instrument
in writing under my hand and seal, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Scal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.

page_text: NOW KNOW YE, that 1, the said John Holt, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement and accompanying Drawings, that is to say:-
My Invention relates to the drawing of flat or nearly flat, or trian-
gular, or sectoral wire, that is to say, of wire which is produced in the
form of a riband, or is made of an elliptical or triangular or other similar
section, and has for its object to produce such wire more readily than
can be done when the ordinary draw plates or wordles are alone used.
For this purpose I draw the wire through a draw plate or perforated guide
plate, and thence between the smooth edges of the two hardened steel
plates. The said edges of the steel plates are suitably rounded or shaped,
and the said plates are fitted in a frame, and the distance between the
said edges is capable of adjustment. The said plates may be so adjusted
as that the said edges shall be slightly nearer to each other at one end
so that the wire may be more or less flattened or shaped according as it
is drawn through one hole or another in the said guide plate, or
according to the number of holes through which the said wire is
successively drawn, or the said plates may be so adjusted as that the
edges thereof shall be parallel to each other.
And in order that my said Invention may be fully understood I will
now refer to the accompanying Sheet of Drawings made about the full
size, and marked with letters of reference, corresponding letters indicating
the same parts in the various Figures.
In the said Drawings Fig. 1 represents a front elevation of the
apparatus which I employ in the flattening of wire; Fig. 2 is a vertical
section on the line A; and Fig. 3 a horizontal section on the line B in
Fig. 1.
In the said Figs. a is a metal frame in which is fitted the two
hardened steel plates or dies b and c, the opposed edges of the said
plates being chamfered or "rounded off" somewhat as shown in Fig. 2.
The plate 6 is fitted to slide up and down in the frame a, and is capable
of being set to any required distance from the plate c by means of the
adjusting screws d, d, and e, the former being screwed into the frame
and the latter into the plate b. Screws ƒ and g are mounted in bearings
formed in the brackets h, h, which are secured to the frame a, and two
guides i and are tapped to suit the said screws, so that by turning either
of the said screws the corresponding guide may be moved to and fro.

page_text: Each guide is formed with a projection which enters between the edges
of the two plates 6 and c. When operating with the said apparatus it is
fixed in a draw bench or in a suitable drawing apparatus, and the end of
the wire to be flattened is introduced into the space between the plates
b and c and the guides i and j. The plates 6 having been adjusted the
wire is drawn through the said space, and becomes more or less flattened
according to the adjustment of the plate b. Both of the guides are
moved at intervals so that the wire may be operated upon by different
portions of the edges of the plates b and c in order to prevent or to lessen
the grooving of the edges of the said plates.
Having now fully described and indicated the nature of my said In-
vention, I would have it to be understood that I claim the employment
of the herein-before described and indicated means for drawing flat or
triangular wire, the important feature being the action of the edges of
the aforesaid steel plates.
In witness whereof, I, the said John Holt, have hereunto set
my hand and seal, this Tenth day of March, in the year of our
Lord One thousand eight hundred and seventy-three.