AN IMPROVED MACHINE OR APPARATUS FOR WINDING YARNS OB THREADS ON BOBBINS
Year: 1870

page_text: at the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 5th April 1870, pursuant to the 9th Section of
the Patent Law Amendment Act, 1852.-A communication from
Monsieur Jules Elic Plessier, residing at Fillé, near Beauvais, in
the Empire of France.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HECTOR
AUGUSTE DUFRENÉ, of 10, Rue de la Fidélité, Paris, and 4, South
Street, Finsbury, London, Civil Engineer and Patent Agent, send
greeting.
WHEREAS I am in possession of an Invention for "AN IMPROVED
MACHINE OR APPARATUS FOR WINDING YARNS OB THREADS ON BOBBINS,"
and have petitioned Her Majesty to grant unto me, my executors,
administrators, and assigns, Her Royal Letters Patent for the same,

page_text: and have made solemn Declaration that it is a communication to me
from Monsieur Jules Elie Plessier, a person resident at Fillé, ucar
Beauvais, in the Empire of France.
NOW KNOW YE, that I, the said Hector Auguste Dufrené, do hereby
declare that the following Complete Specification under my hand and
scal fully describes and ascertains the nature of the said Invention and
the manner in which the same is to be performed, reference being had
to the Drawing hereto annexed and forming part of this Specification,
and to the figures and letters marked thereon, that is to say :-
This machine or apparatus is constructed as follows:-M, Figure 1,
is a frame on which are mounted two separate mechanisms dependent
on each other.
The first mechanism gives to the bobbin a rotatory motion on its
axis. The second mechanism gives to the thread a to-and-fro motion
which conducts it over the whole height of the spindle according
to a figure determined upon. A, Figure 1, is a cylinder which
receives its rotatory motion from a prime mover or which is turned
by hand. Two crecls arranged opposite each other above the cylinder A
receive the bobbins B of thread and the spindle C upon which this
thread is to be wound, which latter are placed on axes provided with
pulleys I put in motion by straps passing over the cylinder A. The
second mechanism gives to the thread while it is being wound a to-and-
fro movement, so as to form the shape of the bobbin according
to the figure determined upon and reproduces this figure to any
required number. I obtain this to-and-fro motion of the thread and
adjust it to the rotation of the pulley of the axis, which gives the
movement to the spindle C in the following manner:-The cylinder A
at one of its extremities is provided with a pinion which works a clock
movement or a train of wheels H, serving to reduce the speed in a
suitable proportion and forming the connection between the two
mechanisms. This reduction of speed varies according to the number
of the thread, allowance being made for the height on the bobbin; but
these changes which only effect one wheel do not in any way change the
action or arrangement of the parts which assist in the winding on or
making the bobbins.
The second mechanism is constructed as follows:-A horizontal wheel D.

page_text: Figure 1, working at a low speed is provided on its circumference with
a band of thin metal (a sheet of copper for instance about four and
a half inches in height) which is cut with saw teeth (or projections of
any suitable height and curve) the dimensions of which are in direct
proportion with the different heights of the thread on the bobbin.
A lever E of the form of a scale beam has on one side arms; the
arm E, D, Figure 3 is provided with a weight F, which slides on it,
the end of the other arm is provided with a strong needle C which
is supported on the said teeth of the metal band and follows their
contours. The other side of the lever is provided with a number of
arms G, G, Figure 3, in proportion to the number of axes. The ends of
these arms carry metal rods F, Figure 1, hanging therefrom, and so
arranged as to fall between the two creels of the bobbins, and at a short
distance from the spindle C. Another metal rod G', Figure 1, is fixed at
a suitable height perpendicularly on the vertical rod F, and presses the
thread from top to bottom, following the to-and-fro motion which it
reccives from the lever put in motion by the saw teeth. This rod G
slides on the fixed rods which prevent it moving out of the straight line
which it has to follow in front of the bobbin.
I calculate the dimensions of the saw teeth or projections in the
following manner :-The cylinder A, Figure 1, travels over about fifteen
meters (French). The pulley of the axle of the spindles C are ten
centimeters in circumference, and the fifteen meters speed they receive
direct from the cylinder causes them to rotate one hundred and fifty times.
On the other hand, the saw teeth by means of the clock movement H
travel ten centimeters during the same time. It follows therefore that I
obtain the proportion following, videlicet, one hundred and fifty rotations
of bobbins give ten centimeters to the saw teeth, or three meters of the
bobbins give two centimeters to the saw teeth. Therefore in calculating
the number of rotations that the thread has to wind to fill one centi-
meter, for instance, I obtain this formula,-X being the number of
rotations Y, Y is the speed of the saw teeth, hence I have only
to draw a bobbin of full size in all respects similar to the model which
I wish to reproduce I divide the bobbin into an inclined parallelogram
favourable to its unwinding in a section of a centimeter which I develop
successively, counting the number of turns which the thread makes to
fill one of its sections in its whole height, and I apply the above stated
2X
=

page_text: formula (see Figure 2). The height of the saw teeth corresponds to the
precise height of the thread on the cops A, E, and B, D, Figure 2.
The developement of their base A, E, B, D, on the same plane corresponds
with the number of turns which are superposed in order to fill each
section (see Figure 4).
A similar bobbin may be obtained with threads of all sizes. If the
same spindle be employed the clock movement is advanced or put back.
If spindles of different heights and the same number of turns be
employed the axis of the lever is changed as herein-after described.
It will be understood that by the action of the lever E, Figure 1,
the guide thread will act in an opposite direction to the saw teeth,
for this reason the bobbin is presented in a reversed position, Figure 2.
This bobbin has been arranged in the form of a parallelogram inclined
on its axis and calculated so as to facilitate its unwinding during the
play of the shuttle. The lever receives the to-and-fro motion from the
saw teeth and transmits it to the thread guide.

page_text: thread guide, substantially as herein-before described and represented in
the accompanying Drawing.
In witness whereof, I, the said Hector Auguste Dufrené, have
hereto set my hand and seal, this Thirty-first day of March One
thousand eight hundred and seventy.