IMPROVEMENTS IN THE TWISTING OF FIBROUS MATERIALS, AND IN THE MACHINES OR FRAMES USED IN SUCH TWISTING
Year: 1879

page_text: LETTERS PATENT to William Murray, of Ettrick Road, Selkirk, in the County
of Selkirk, Spinner, for the Invention of "IMPROVEMENTS IN THE TWISTING
OF FIBROUS MATERIALS, AND IN THE MACHINES OR FRAMES USED IN SUCH
TWISTING."
Sealed the 4th July 1879, and dated the 24th January 1879.
PROVISIONAL SPECIFICATION left by the said William Murray at the Office
of the Commissioners of Patants on the 24th January 1879.
WILLIAM MURRAY, of Ettrick Road, Selkirk, in the County of Selkirk, Spinner.
"IMPROVEMENTS IN THE TWISTING OF FIBROUS MATERIALS, AND IN THE MACHINES
OR FRAMES USED IN SUCH TWISTING."
"
The said Invention relates to improvements in the twisting of fibrous materials,
and in the machines or frames used in such twisting, and has for its object 80 to
construct the said machines or frames that an amount of twist is given to the
fibrous materials or threads double or about double that which is given in such
machines or frames as ordinarily constructed when the said machines or frames are
driven at the same speed. For this purpose the " creel-pins which carry the
bobbins from which the fibrous material or threads to be twisted are drawn instead
of being stationary are upon the upper ends of spindles which extend downwards,
and are rotated when the machine or frame is at work from the spindles of the
bobbins upon which the twisted material is wound. This rotation is effected by
means of bands passed over pulleys upon the last mentioned spindles and over
pulleys upon the aforesaid "creel-pin" spindles. A bobbin upon which the threads
or fibres to be twisted have been wound in a winding machine is placed upon each
of the "creel-pins," being compelled to turn with the spindles of the said "creel-
pins" by pins
or squared portions engaging in the said hobbins, and the threads or
fibres are led from the said bobbins over guides and through the travelling rollers,
and thence through the ordinary guide eyes to the bobbins upon which the twisted
threads or fibres are to be wound. Thus when the machine or frame is at work by

page_text: reason of the revolution both of the bobbins from which the untwisted threads or
fibres are drawn, and of the bobbins upon which the twisted threads or fibres are
wound, a twist is given to the threads or fibres before they pass through the
travelling rollers, and thereafter additional twist (the ordinary twist) is given to
the threads or fibres after they pass from the said rollers, whereby double or about
double that amount of twist is given to the threads or fibres which is given by the
ordinary machine or frame working at a corresponding speed, and this in the same
time without raising the speed of the frame, and with the expenditure of the same
power as that, or but little more power than that required to give the ordinary
twist thereto.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Murray in the Great Seal Patent Office on the 22nd
July 1879.
WILLIAM MURRAY, of Ettrick Road, Selkirk, in the County of Selkirk, Spinner.
"IMPROVEMENTS IN THE TWISTING OF FIBROUS MATERIALS, AND IN THE MACHINES
OR FRAMES USED IN SUCH TWISTING."
My Invention relates to improvements in the twisting of fibrous materials, and
in the machines or frames used in such twisting, and has for its object to give
double or more than double the usual amount of twist given by the ordinary
machines or frames driven at the same speed, and taking but little more power.
To effect this I construct or arrange the machines or frames as follows:-The cree!
spindles which, as before, carry the bobbins on which is wound the fibrous yarn to
be twisted, were before stationary, I carry the lower end down and into a footstep,
and fix on the lower part of such extended spindle a grooved pulley, to which
motion is given by a band from the front take up spindle carrying the tube or pirn
on which the twisted material is wound. The untwisted threads are led from the
bevil ended bobbins on the creel spindles (such bobbins being secured to the top
end of such spindles in the usual way) through guide oyelet and over guide rods
through travelling rollers, and thence through the ordinary guide eyes to the tube
or pirn on the front take up spindle on which the twisted threads are wound.
Thus a twist is given to the threads both before they pass through the travelling
rollers and after they have so passed by the front take up spindle. And in order
that my Invention may be better understood I will now proceed to more particu-
larly describe the system, mode, or method by which the same may be carried
into practical effect by the several figures and letters on the annexed Sheet of
Drawings.
Figure 1 is an elevation of my improvement shewing three spindles, two with
delivering bobbins with yarn passing from them through guide, over rods, through
rollers, through guide again to take up tube or piro.
Figure 2 is a plan of the same.
A, A, are creel spindles; B, B, bevil flanged bobbins from which the yarn is
drawn bearing against the upper flange as it comes off such upper flange, acting as
a delivery flyer in off drawing; D is the pirn or tube spindle for taking up the
twisted or finished yarn; E, band for driving spindles A, A, from wharve or
pulley F to wharve or pulley G on spindle A; H, H, are two guide rods over which
the yarn passes on its way to rollers I through eyelet or guide J to take up pirn or
tube L; K is an ordinary guide frame through which the yarn has to pass on its
way. Having described the various parts of my Invention, their positions, and
use, I now proceed to describe its action and effect. The yarn in most instances is
now (by the old system) taken from a bobbin from a still creel spindle fixed possibly
in a similar position to bobbins B, merely turning sufficient to give off its yarn, as
drawn by travelling rollers and pirn or tube L. I substitute for the innert still
creel spindle lengthened moving spindles, on the top of which the giving off or
delivering bobbins are secured. These spindles, with their bobbins, are driven at
any required speed from the front take up pirn or tube spindles by bands E, E,
over or round pullies F, G, the sizes of such pullies will regulate the amount of
twist put in the yarn at the first operation. It will thus be seen that by these
means I put double or more twist in the yarn by one and the same operation, and
this I can increase or decrease at will by the size of my pullies F and G. Having
now described my Invention, and the way I carry it into practical effect, I wish it
to be 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 principal or main features of such Invention; but what I claim
as secured to me herein is,-
First. The spindles A with their connections combined for putting twist in yarn

page_text: in giving off before coming to taking up rollers, substantially as and for the
purposes hereinbefore set forth.
Second. The inward bevil edged bobbin, whereby a flyer action is obtained on
the yarn at giving off, substantially as and for the purposes herein before set forth.
Third, and last. The several parts enumerated and combined for the purpose of
putting extra twist in yarn, substantially as and for the purposes hereinbefore set
forth.
In witness whereof, I, the said William Murray, have hereunto set my hand
and seal, this Eighteenth day of July, in the year of our Lord One thousand
eight hundred and seventy nine.