IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS
Year: 1878

page_text: LETTERS PATENT to John Dodd, of Oldham, in the County of Lancaster,
Mechanical Engineer, for the Invention of "IMPROVEMENTS IN MACHINERY FOR
SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS."
Sealed the 9th July 1878, and dated the 12th January 1878.
PROVISIONAL SPECIFICATION left by the said John Dodd at the Office of the
Commissioners of Patents on the 12th January 1878.
JOHN DODD, of Oldham, in the County of Lancaster, Mechanical Engineer.
"IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING COTTON AND OTHER
FIBROUS MATERIALS."
My Invention refers to those machines for spinning and doubling, which are
commonly called ring and traveller frames, and consists in a method of building the
base of the cop upon the spool, whereby I am enabled to accumulate the yarn or
thread upon the said base.
The heart wheel and rack for effecting the lifting of the rail are of any usual
construction, and the said rack gives motion to a train of gearing also of ordinary
arrangement, but instead of causing such ordinary gearing to act upon the lifting
apparatus I interpose a novel arrangement for effecting the purpose of my Inven-
thus I
tion, such arrangement consisting of volute or excentric toothed wheels;
place upon the axis of the last of the ordinary train a volute wheel in gear with
another which gives motion to the lifting rack, and. when the base of the cop is
being formed the lesser radii of the former keep in gear with the larger of the
latter, whereby the amount of lifting motion is retarded, but when the said base has
been formed concentric parts of the said wheels pass into gear, and the ordinary
winding of the cop takes place.
The volute wheels above mentioned need not act direct on the lifting rack, but
may be placed anywhere in the train of gearing.

page_text: 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 July 1878.
JOHN DODD, of Oldham, in the County of Lancaster, Mechanical Engineer.
IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING COTTON AND OTHER
FIBROUS MATERIALS."
"
My Invention refers to those machines for spinning and doubling, which are
commonly called ring and traveller frames, and consists in a method of building the
base of the cop upon the spool, whereby I am enabled to accumulate the yarn or
thread upon the said base.
The heart wheel and rack for effecting the lifting of the rail are of the usual
construction, and the said rack gives motion to a train of gearing also of ordinary
arrangement, but instead of causing such gearing to act upon the lifting apparatus
direct I interpose a novel arrangement for effecting the purpose, such arrangement
consisting of volute or excentric toothed wheels.
In the accompanying Drawing Fig. 1 represents a partial transverse section of a
ring and traveller frame with my Invention adapted thereto; and Fig. 2 is a partial
side view of the same.
Fig. 3 is a diagram representing a cop spur in a ring and traveller frame, and
which I shew for the purpose of explaining the object of my Invention, such object
being to retard the lifting while the base from a to b is being formed, so as to get
an accumulation of yarn, and impart to the said base a suitable form and solidity.
I would however here observe that I do not claim this retarding of the lifting in
itself, as I am aware that it is already in use, but it is the method of effecting it
which constitutes my Invention.
Referring to the right-hand side of Fig. 1, at 1 is the heart wheel for traversing
the bar 2 moving in guides 3, and which carries the screw 4 for shifting the positions
of the racks 5, 6, such screw being periodically turned by the lever 7 running along
the incline 8, and acting by its click upon the ratchet 2, all of which parts are old,
and do not therefore require further description. In gear with the rack 5 (the
pitch line of which as well as the other gearing to be described are shewn by dotted
lines) is a toothed wheel 10 driving another, 11, mounted on a shaft 12, which also
carries a volute or excentric toothed wheel 13 in gear with another of such formed
wheels 14 mounted on a shaft 15, which carries the ordinary wheel 16 in gear with
the rack 17 on the usual poker 18, by which the lifting is effected.
According to the positions of the parts shewn the base of the cop is about to be
made, and the smallest radius of the toothed volute 13 is in gear with the largest
radius of the other volute 14; when therefore the rack 5 communicates motion to
the wheel 10 the poker 18 will be lifted at a slow rate, and through a compara-
tively short space, so as to permit an accumulation of yarn upon the spool, but as
the screw 4 causes the rack 5 to traverse in the ordinary manner the larger radii of
the volute 13 become in gear with smaller radii of the volute 14, whereby the
lifting becomes quicker, and is also lengthened, and this operation goes on until the
base of the cop is formed, and it will be evident that the form of such base may be
determined at will by varying the configuration of the volutes. The base having
been thus formed the concentric parts c, d, e, f, which form continuations of the
volutes, come into operation for effecting the lifting, and then uniform layers of
yarn are wound as usual, until the cop is completed.
I have above referred to the right-hand side of Fig. 1, but the arrangement on
the left is precisely the same, excepting that the carrier 10 is not used, the
omission simply being to cause both rails to rise and fall at the same time..
By reference to Fig. 2 it will be seen that the volute wheels are situate about the
middle of the frame, so as to avoid tonsion.
Having thus described and ascertained the nature of my said Invention, and the
manner in which the same is to be performed, I desire it to be understood that I do

page_text: not limit myself to the disposition of gearing above described, but claim as secured
to me under the above in part recited Letters Patent, and for the purpose above
set forth, the interposition in the lifting gearing of volute or excentric toothed
wheels.
In witness whereof, I, the said John Dodd, have hereunto set my hand and
seal, this Eleventh day of July, in the year of our Lord One thousand eight
hundred and seventy-eight.
JOHN DODD. (L.S.)