In- PROVEMENTS IN SHEARS TO BE USED FOR PREPARING METAL STRIPS FOR WIRE DRAWING
Year: 1875

page_text: LETTERS PATENT to Jules Joseph Laveissière, of No. 58, Rue de la
Verrerie, in the City of Paris, Merchant, for the Invention of “In-
PROVEMENTS IN SHEARS TO BE USED FOR PREPARING METAL STRIPS FOR
WIRE DRAWING.”
Sealed the 26th November 1875, and dated the 23rd June 1875.
PROVISIONAL SPECIFICATION left by the said Jules Joseph
Laveissière at the Office of the Commissioners of Patents, with his
Petition, on the 23rd June 1875.
I, JULES JOSEPH LAVEISSIÈRE, of No. 58, Rue de la Verrerie, in the
City of Paris, Merchant, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN SHEARS TO BE USED FOR PREPARING METAL
STRIPS FOR WIRE DRAWING," to be as follows:-
This Invention has for its object improvements in shears to be used
for preparing metal strips for wire drawing.

page_text: •
In place of rolling or casting bars or rods, whose length must always
be limited, I use ordinary rolled plates either rectangular or by pre-
ference to avoid angles round discs, and I then cut them with the
circular shears, whilst gradually bringing the centre of the disc up to
the point of contact of the jaws of the circular shears, so that the shears |
cut round and round the disc, detaching a band of metal of a width
equal to the distance that the two points are caused to approach each
other at each revolution of the disc. The disc is then cut in a spiral,
which constantly tends to the centre, and a band rolled up on itself
is obtained, which, if the original diameter of the disc was large, is of
great length.
The apparatus which I employ is shown in the accompanying
Drawing.
A, circular shears; B, iron frame; C, moveable table for holding the
diso and carrying the toothed wheel D; D³, toothed wheel fixed on the
same axis as the bevil pinion E; F, bevil wheel driven by the pinion E,
and fixed on the axis G for driving through the toothed wheels H, Í,
the axis I, which by means of a nut and screw advances or withdraws
the carriage on which the frame B is fixed; M, screw for tightening the
discs between the moveable table O; N, screw to regulate the transverse
movement of the carriage carrying the frame B, so as to obtain the
desired point of contact between the disc and the jaws of the shears.
In working the disc or plate is placed between the two tables O, and is
brought under the action of the circular shears. The action of the
shears causes the disc to rotate, and the toothed wheel D is thus driven,
and motion is transmitted to the toothed wheel E, which again drives F,
which is mounted on a square or angular axis along which it can slide;
it transmits the motion to the screw I through the toothed wheels H, H.
These wheels can be changed to vary the speed. The carriage J receives
its motion from this screw by means of a nut, which is freed or locked &
either by a screw, excentric, or lever.
In the arrangement I have described motion is given to the carriage
by screws and toothed wheels, but this may be done by other mechanical
devices. I have also described the frame B as advancing, it may how-
ever remain fixed, and the shears themselves be advanced to obtain the 3
same result.

page_text: filed by the said Jules Joseph Laveissière in the Great Seal Patent
Office on the 22nd December 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JULES
JOSEPH LAVEISSTÈRE, of No. 58, Rue de la Verrerie, in the City of Paris,
Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of June, in the year of
our Lord One thousand eight hundred and seventy-five, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Jules Joseph Laveissière, Her
special license, that I, the said Jules Joseph Laveissière, my executors,
administrators, and assigns, or such others as I, the said Jules Joseph
Laveissière, 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, 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 SHEARS TO BE USED FOR PREPARING METAL STRIPS FOR
WIRE DRAWING," upon the condition (amongst others) that the said
Jules Joseph Laveissière, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals,
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 I, the said Jules Joseph Laveissière, do
hereby declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, that is to say :—
-

page_text: In place of rolling or casting bars or rods, whose length must always
be limited, I use ordinary rolled plates either rectangular or by pre-
ference to avoid angles round discs, and I then cut them with the
circular shears, whilst gradually bringing the centre of the disc up to
the point of contact of the jaws of the circular shears, so that the shears
cut round and round the disc, detaching a band of metal of a width
equal to the distance that the two points are caused to approach each
other at each revolution of the disc. The disc is thus out in a spiral,
which constantly tends to the centre, and a band rolled upon itself is
obtained, which, if the original diameter of the disc was large, is of great
length.

page_text: What I claim is, the construction of shears for preparing metal strips
for wire drawing, substantially as described.
In witness whereof, I, the said Jules Joseph Laveissière, have
hereunto set my hand and seal, this Eleventh day of December
in the year of our Lord One thousand eight hundred and seventy-
five.