IMPROVEMENTS IN TWISTING MACHINES, LIKEWISE APPLICABLE TO WARP WINDING AT THE SAME OPERATION.
Year: 1878

page_text: LETTERS PATENT to Thomas Unsworth, of Manchester, in the County of
Lancaster, for the Invention of "IMPROVEMENTS IN TWISTING MACHINES,
LIKEWISE APPLICABLE TO WARP WINDING AT THE SAME OPERATION.".
Sealed the 20th August 1878, and dated the 22nd February 1878.
"
COMPLETE SPECIFICATION filed by the said Thomas Unsworth at the Office
of the Commissioners of Patents on the 22nd February 1878.
" IMPROVE-
THOMAS UNSWORTH, of Manchester, in the County of Lancaster.
MENTS IN TWISTING MACHINES, LIKEWIS APPLICABLE TO WARP WINDING AT THE
SAME OPERATION."
On the Seventeenth day of January 1873, Letters Patent were granted to me for
Improvements in Doubling Machines." In that as in my present improvement
I have a double arrangement of spindles (each side) and flyers for giving off and
twisting at the same time. In that machine I- double the yarn and stretch it
over my Patent conical rollers, and thence to the take-up bobbins worked hori-
zontaly.
In my present improvement I place the wound bobbin with any number of
threads on, on a spindle in the inverted flyer, and the twist is put in as the yarn
is drawn from the flyer by the twist rollers, and is delivered on to one of the
vertical take-up bobbins on the creel.*
I use for hard yarn for twist rollers my before-named conical rollers, which will
firmly stretch the already twisted yarn; but for soft yarn I use two plain friction
rollers (for drawing the yarn from the delivery bobbins), between which it passes,
and thence to vertical take-up bobbins. The take-up bobbins being vertical is of
great advantage. It simplfys doffing considerably, the bobbins being merely lifted
from the spindles and replaced, which is done instantly.
Another great advantage is, that any variety of sizes of bobbin may be used in
the same machine, as, for instance, bobbins fitting a warping creel may be used, so
that warp winding (as well as twisting) may be done on this machine at one opera-
tion, thus saving the present process of warp winding.

page_text: And in order that it may be better understood I annex herewith a Sheet of
Drawings, the several Figures of which are marked by corresponding letters of
reference.
Fig. 1 is an "end view" of one of my machines, showing my method of twisting
soft yarns; Fig. 2 is a “plan” of same, broken off, yet sufficient to show the improve-
ment.
Fig. 3 is an "end view" of one of my machines, showing my method of twisting
hard yarns that require firm stretching; Fig. 4 is a "plan "of the same broken, as in
Fig. 2.
A, A, is machine frame; B, driving drum; C, delivery bobbin spindle; D, pulley
by which it is driven; E, delivery bobbin; F, flyer; G, round rod, pulley, or other
equivalent, over which the yarn passes to, between friction rollers H, H, in Figs. 1
and 2, and over conical stretching rollers in Figs. 3 and 4; I is a guide, over which
the yarn passes to take up bobbin L, on spindle K; J is the traverse guid rod,
which runs through tables M and N, the lower ends of which are lifted by
the ordinary under traverse motion, not necessary here to describe. The rod o, o,
runs the whole length of the machine, each side to which the guides I are
secured.
The yarn a passes from bobbin E, round smooth leg b of flyer F, and thence to long
or eyelet leg marked b, over rod or pulley G, between friction pullies or rollers'H, H,
Fig. 1 (for soft yarn) (and over conical rollers for hard yarn, Fig. 3), between
which and flyer leg the yarn gets its twist; it passes from thence to the take-up
bobbin I finished.
"
Having enumerated the several advantages, and fully described my Invention, I
wish it to be distinctly understood that I do not confine myself to the "precise
details I have had occasion to describe and refer to, as many variations may be
made in detail without deviating from the principle, but what I claim as novel and
therefor secured to me herein is,―
First. The vertical taking-up bobbin L, substantialy as and for the purposes
herein-before set forth.
Second. The friction rollers H, H, in Figs. 1 and 2, substantialy as and for the
purposes herein-before set forth.
Third. The use of the several parts, either combined or separate, substantialy as
and for the purposes herein-before set forth.
In witness whereof, I, the said Thomas Unsworth, have hereunto set my hand a
and seal, this Twentieth day of February, in the year of our Lord One
thousand eight hundred and seventy-eight.
THOMAS UNSWORTH
(LS)