IMPROVE- MENTS IN MACHINERY FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS
Year: 1870

page_text: LETTERS PATENT to John Dodd, of Oldham, in the County of
Lancaster, Mechanical Engineer, for the Invention of "IMPROVE-
MENTS IN MACHINERY FOR SPINNING AND DOUBLING COTTON AND OTHER
FIBROUS MATERIALS."
Sealed the 4th November 1870, and dated the 18th May 1870.
PROVISIONAL SPECIFICATION left by the said John Dodd at the
Office of the Commissioners of Patents, with his Petition, on the
13th May 1870.
I, JOHN DODD, of Oldham, in the County of Lancaster, Mechanical
Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING COTTON AND
OTHER FIBROUS MATERIALS," to be as follows:-
My Invention refers to that part of self-acting mules or twiners
known as the winding-on motion, and is designed to impart an increased.
velocity to the spindles, when the yarn is being wound on the tapered
portion thereof and the cop nose is being formed. To accomplish this
I employ the ordinary winding-on drum, but form upon one end thereof a

page_text: scroll gradually decreasing in diameter in proportion to the required
differential motion of the spindles, and I provide means for taking up
any length of chain, so that it may be unwound from any part of the
said scroll.
The arrangement I propose is to attach one end of the chain to the
smaller end of the drum, and the other to a pulley carried by the winding-
on nut, and which may be retained in any desired position by a ratchet
wheel and click. When for the aforesaid reason the spindles are to
run at a greater speed, the attendant turns the said pulley, and by thus
winding up a portion of the chain causes it to be unwound from a 1
decreased diameter of the drum, and by these means he can regulate at
pleasure the velocity of the spindles. Or the arrangement may be
adapted to self-acting apparatus.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Dodd in the Great Seal Patent Office on
the 12th November 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
DODD, of Oldham, in the County of Lancaster, Mechanical Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of May, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said John Dodd, Her special license that I,
the said John Dodd, my executors, administrators, and assigns, or such
others as I, the said John Dodd, 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 MACHINERY FOR
SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS," upon the
condition, amongst others, 'that I, the said John Dodd, 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

page_text: 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 John Dodd, do hereby deolare 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 refers to that part of the self-acting mule or twiner,.
known as the winding-on motion, and is designed to impart an increased
velocity to the spindles when the yarn is being wound on a tapered.
portion thereof, and the cop nose is being formed.
The arrangement most commonly in use for winding on is that of a
quadrant or radial arm, winding-on chain, and drum, and it is to these.
parts that my Invention has reference.
To accomplish the object of my said Invention I employ the ordinary
winding-on drum, but form upon one end thereof a scroll gradually
decreasing in diameter in proportion to the required defferential motion.
of the spindles, and I provide means for taking up any length of chain,
so that it may be unwound from the said scroll when desired, or from a
portion thereof.
In the accompanying Drawing Fig. 1 represents a partial view of
mule in cross section with my improvements adapted; Fig. 2, a detached.
view of the winding-on drum; and Fig. 8, a detached view of the radial.
arm.
The framework of the mule is shewn at a, the end A being the roller
beam and thereof. Upon this frame is mounted the usual quadraṇt 6,.
to which motion is communicated from the shaft c, and at d is the radial
arm; at fis the nut which is traversed in the ordinary manner by the
screw e, and at g is what may be considered the usual point of attach-
ment of the winding-on chain h, but according to my Invention this
part of the machine is constructed in a peculiar manner.
Within an ex-
tension i of the nut is mounted a short shaft j, upon which is a pulley k,
and upon the same axis are ratchet wheels 1, and also a lever handle m.
The part i carries a click n which prevents the ratchet wheels from
turning in one direction, but leaves them free to do so in the other. At.o
is the carriage, within which is mounted as usual the winding-on drum
p, and which communicates motion to the tin drums o̟ in the ordinary

page_text: manner. The winding-on drum p is constructed as a cylinder from
r to 8, and so far it is as usual, but according to my Invention one end
thereof is provided with a scroll tapering towards one end. The
winding-on chain is attached to the smaller end of the scroll t, is then
coiled around the said scroll, and subsequently around the parallel part
of the drum. From thence it passes over a roller at g, then extends
upwards and is made fast to the pulley k.
The operation is as follows:-According to the positions of the parts
shewn, the winding on in order to form a cop is just commencing, the
nut being at the bottom of the radial arm, as usual. The machine
being now put in motion the spinning and winding on will go on in the
ordinary manner, the nut f being traversed by the screw e until it
arrives at the position shewn by dotted lines, by which time the base
or full diameter of the cop will have been attained, and the operation
will then go on, as is well understood, until the nose of the cop is being
formed on the tapered portion of the spindle, at which time my Inven-
tion is particularly designed to come into operation, although it may be
varied in this particular, as will hereafter be mentioned. During the
operation above alluded to the chain h has been unwound from the
parallel part only of the drum p, a sufficient length of the said chain
being wound thereon to prevent the motion of the carriage from causing
it to proceed from the scroll t, but that part of the apparatus now comes
into operation. Suppose the spindles to continue to revolve at the same
speed as they have hitherto done, their gradually decreasing diameter
would not afford a proportionate winding-on or taking-up power, a
deficiency which, as is well known, leads to looseness in the formation
of the nose of the cop, and to remedy which my Invention is chiefly
designed, and operates in the following manner :-The attendant by
means of the hand leaver m turns the pulley k a portion of a revolution,
by which means a certain length of chain is drawn off the drum. P
is wound upon the pulley k, and the length of the said chain between
the point g and the point of attachment on the drum p is necessarily
shortened, when therefore the carriage runs in there will not be sufficient
length of chain to remain upon the parallel part of the drum and it
will of necessity pass on to a portion of the scroll t, which being of
smaller diameter than the driving surface hitherto used will impart an
increased rate of speed to the spindles in proportion to their decreasing
diameter. As the work goes on the attendant occasionally (as he may
and

page_text: see necessary) winds further lengths of chain upon the pulley k, by
which means the several shortenings of the chain cause it to be unwound
from successively decreasing diameters of the scroll t, and thus the
operation goes on until the cop is completed.
I have above particularly alluded to my Invention as coming into
operation at a certain time for forming the nose of the cop, that being
the point of greatest importance, but it will be evident that if desired
the scroll may be brought into operation at an earlier stage of the
formation of the cop, in order in like manner to compensate for the
taper of the spindle at lower positions.
Having thus described and ascertained the nature of my said Inven-
tion, and the manner in which the same is to be. performed, I desire
it to be understood that I am aware that scrolls have hitherto been
formed upon winding-on drums and therefore lay no claim thereto,
but what I claim as my Invention and for the purpose above set
forth is, the use of a winding-on drum with decreasing diameters in
combination with apparatus connected to the radial arm for removing
lengths of chain from the said drum..
In witness whereof, I, the said John Dodd, have hereunto set my
hand and seal, this Tenth day of November, in the year of our
Lord One thousand eight hundred and seventy.