IMPROVEMENTS IN BOBBINS FOR DANDY CAN D מAMIR VADNO
Year: 1874

page_text: LETTERS PATENT to John Jackson, of the City of Manchester, Cotton
Yarn Doubler, for the Invention of "IMPROVEMENTS IN BOBBINS FOR
DANDY CAN
D
מAMIR
VADNO
"
Sealed the 5th January 1875, and dated the 22nd August 1874.
PROVISIONAL SPECIFICATION left by the said John Jackson at the
Office of the Commissioners of Patents, with his Petition, on the
22nd August 1874.
I, JOHN JACKSON, of the City of Manchester, Cotton Yarn Doubler,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN BOBBINS FOR SPINNING AND DOUBLING COTTON AND OTHER YARNS," to be as
follows:-
In wood bobbins of the ordinary construction the upper flange is
very liable to be worn into grooves by the friction of the yarn in passing
from the roller to the bobbin, and these grooves cause frequent breakages
and waste.

page_text: Now my Invention consists in preventing the above defects by
securing a metal ring on the said upper flange of the bobbin whereby
the grooving is avoided.
The rings are forced on to the flange by a screw press or other equi-
valent, and then secured by cement.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Jackson in the Great Seal Patent Office
on the 17th February 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
JACKSON, of the City of Manchester, Cotton Yarn Doubler, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-second day of August, in the
year of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said John Jackson, Her special
licence that I, the said John Jackson, my executors, administrators, and
assigns, or such others as I, the said John Jackson, 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 BOBBINS FOR SPINNING AND DOUBLING COTTON AND OTHER YARNS," upon the
condition (amongst others) that I, the said John Jackson, my executors
or administrators, by an instrument in writing under my, or their, or
one of their hands and scals, 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.

page_text: NOW KNOW YE, that I, the said John Jackson, 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 (that is to say):
In wood bobbins of the ordinary construction the upper flange is
very liable to be worn into grooves by the friction of the yarn in passing
from the roller to the bobbin, and these grooves cause frequent breakages
and waste.
Now my Invention consists in preventing the above defects by
securing a metal ring on the said upper flange of the bobbin whereby
the grooving is avoided.
And in order that my Invention may be fully understood and readily
carried into operation, I will proceed to describe the accompanying
Sheet of Drawings, reference being had to the figures and letters
marked thereon.
Fig. 1 is an elevation, Fig. 2, a section, and Fig. 3, a plan of a wooden
bobbin for a ring and traveller doubling frame to which my improve-
ments are applied.
a is the upper flange of the bobbin over which the yarn passes when
it is being wound on the barrel of the bobbin. In ordinary bobbins the
friction of the yarn wears grooves in the flange, and these grooves catch
the yarn and cause it to break, thereby producing waste and loss of
time in piecing up; now in order to prevent these inconveniences I
secure the metal ring 6 on to the circumference of the flange a, so that
the yarn may always have a hard smooth surface to work upon, and the
grooving is avoided.
In order to secure the ring to the flange I heat the ring before it is
pressed on to the flange by a screw press or otherwise; by this means
the contraction of the ring when cold keeps the ring firm on the flange.
The ring may be secured in various other ways.
The ring is or may be tapered internally from both sides, as shewn in
Fig. 2, to retain its hold on the wood.
Instead of making the metal rings of the section shewn in Fig. 2,
they may be made rounded as shewn in Fig. 4, which shows an ordinary
throstle bobbin constructed according to my Invention.

page_text: My improved bobbins are also more durable than those made in
the ordinary manner, as the metal ring prevents the upper flange from
being broken when the bobbin falls on the ground, or when roughly
handled in doffing.
Having thus stated the nature of my Invention, and described two
convenient modes of performing the same, I wish it to be understood
that I do not intend to limit myself to the details given; but that I
claim, securing metal rings to the upper flanges of bobbins for the
purposes described.
In witness whereof, I, the said John Jackson, have hereto set 1
my hand and seal, this Thirteenth day of February, One thou-
sand eight hundred and seventy-five.