IMPROVEMENTS IN DRAWING METALS. AND IN THE MACHINERY OR APPARATUS PROVISIONAL SPECIFICATION
Year: 1862

page_text: LETTERS PATENT to Louis Christoph, of Paris, in the Empire of France,
William Hawksworth, of Linlithgow, North Britain, Steel Manufacturer,
and Gustavus Palmer Harding, of Paris, Merchant, for the Invention of
"IMPROVEMENTS IN DRAWING METALS. AND IN THE MACHINERY OR APPARATUS
PROVISIONAL SPECIFICATION left by the said Louis Christoph, William
Hawksworth, and Gustavus Palmer Harding, at the Office of the Com-
missioners of Patents, with his Petition, on the 10th April 1862.
We, LOUIS CHRISTOPH, of Paris, in the Empire of France, WILLIAM
HAWKSWORTH, of Linlithgow, North Britain, Steel Manufacturer, and GUSTAVUS
PALMER HARDING, of Paris, Merchant, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN DRAWING METALS, AND IN THE MACHINERY
OR APPARATUS EMPLOYED THEREIN," to be as follows:-
This Invention relates to a peculiar system or mode of drawing metals,
whether of a tubular, hollow, or solid section, and consists in the application to
that purpose of hydrostatic pressure in lieu of the ordinary mechanical power
heretofore adopted. In carrying out this Invention we employ a hydrostatic
cylinder and ram, the gripper bars being secured to the end of the ran, whilst
the draw plates or "wordles" are fitted into a suitable support or flange cast
on the cylinder.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Louis Christoph, William Hawksworth, and Gustavus Palmer
Harding, in the Great Seal Patent Office on the 10th October 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, Louis
CHRISTOPH, of Paris, in the Empire of France, WILLIAM HAWKSWORTH,
of Linlithgow, North Britain, Steel Manufacturer, and GUSTAVUS PALMER
HARDING, of Paris, Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Tenth day of April, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-fifth year of Her reign,
did, for Herself, Her heirs and successors, give and graut unto us, the said
Louis Christoph, William Hawksworth, and Gustavus Palmer Harding, Her
special license that we, the said Louis Christoph, William Hawksworth and
Gustavus Paliner Harding, our executors, administrators, and assigns, or such
others as we, the said Louis Christoph, William Hawksworth, and Gustavus
Palmer Harding, our executors, administrators, or 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, use,
exercise, and vend,, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN DRAWING METALS AND IN THE MACHINERY OR APPARATUS EMPLOYED THEREIN,"
upon the condition (amongst others) that we, the said Louis Christoph,
William Hawksworth, and Gustavus Palmer Harding, our executors or ad-
ministrators, by an instrument in writing under our hands and seals, or under
the hand and seal of one of them, 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 Seal Patent Office,
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that we, the said Louis Christoph, William Hawks-
worth, and Gustavus Palmer Harding, do hereby declare the nature of our
said Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement,
reference being had to the accompanying Drawings, and to the letters and
figures marked thereon, that is to say :-
Our said Invention relates to a peculiar system or mode of drawing metals,
whether of a tubular, hollow, or solid section, and consists in the application

page_text: to that purpose of hydrostatic pressure in lieu of the ordinary mechanical
power heretofore adopted. In carrying out this Invention, we employ a
hydrostatic cylinder and ram, the gripper bars being secured to the end of the
ram, whilst the draw plates or "wordles" are fitted into a suitable support or
flange cast on the cylinder.
And in order that our said Invention may be fully understood, we shall now
proceed more particularly to describe the same, and for that purpose we shall
refer to the Figures on the Sheet of Drawings hereunto annexed, the same
letters of reference indicating corresponding parts in both Figures.
:
Figure 1 of our Drawings represents a partial vertical section and elevation
of one form of hydrostatic apparatus, whereby a number of cylindrical tubes
of the same or different diameters may be drawn simultaneously, and Figure 2
is a horizontal section of the same taken along the line 1, 2, in Figure 1.
This apparatus is actuated by hydrostatic pressure. It consists of a long
hydrostatic cylinder A, securely fixed to the brickwork B, and having within
it a strong hollow cast iron piston rod or ram C, provided at its lower end
with a double-cup leather packing D, fitting accurately the bore of the
cylinder. The cylinder A is terminated at its lower extremity by a strong
cover E bolted thereon, and having a pipe F attached thereto for the inlet of
the water, which is pumped therein in the usual manner adopted for hydro-
static presses. The body of the rain is made in one piece, with a strong and
wide flange or collar G, which is cast or otherwise formed or fitted thereon
near its upper extremity, in which flange or collar are made a series of apertures
for the reception of the ends of the draw rods H, H, which are firmly secured
at their lower extremities to the corresponding tubes I, I, to be drawn, and are
retained at their upper ends by the strong nuts J, J. Near the middle of the
cylinder A is formed a somewhat similar flange or collar K, in which are made
a series of holes, corresponding in position to those in the flange G, in which
apertures are fitted the draw plates or "wordles" L, L. To the flange of the
cylinder cover E are secured, in any convenient manner, the lower ends of the
several mandrels M, M, by means of which, in combination with the draw
plates, the tubes are drawn. In working the apparatus, the piston or ram is
first lowered to the bottom of its stroke, when the smaller end of the tube or
tubes is secured to the rod or rods H, H, in any well known or suitable
manner. The mandrils are then so adjusted that the enlargements or swellings
will be within the tubes, and about the middle of the draw plates or " wordles."
The pump is now operated, when the ram will commence to rise, and will
draw with it the several draw rods H, and the tubes attached thereto. By

page_text: this means a steady and powerful tractive power is applied to the tubes, which
will be all drawn simultaneously through the draw plates. The same arrange-
ment is, of course, applicable to tubes of various sections other than circular.
Having now described and particularly ascertained the nature of our said
Invention, and the manner in which the same is or may be used or carried
into effect, we would observe in conclusion, that what we consider to be novel
and original, and therefore claim as the Invention secured to us by the herein-
before in part recited Letters Patent, is the general construction, arrangement,
and combination of machinery or apparatus for drawing metals, as herein-
before described.
In witness whereof, I, the said Gustavus Palmer Harding, on behalf of
myself and the said Louis Christoph and William Hawksworth, have
hereunto set my hand and seal this First day of October, One thousand
eight hundred and sixty-two.
G. P. HARDING. (L.S.).