IMPROVEMENTS IN APPARATUS FOR DOUBLING AND TWISTING YARNS AND THREADS
Year: 1865

page_text: LETTERS PATENT to William Townend, Mechanic, of 12, Wright Street,
Otley Road, Bradford, in the West Riding of the County of. York, for
the Invention of "IMPROVEMENTS IN APPARATUS FOR DOUBLING AND TWISTING
YARNS AND THREADS."
Sealed the 1st December 1865, and dated the 5th June 1865.
PROVISIONAL SPECIFICATION left by the said William Townend at the
Office of the Commissioners of Patents, with his .Petition, on the 5th
June 1865.
I, WILLIAM TOWNEND, Mechanic, of 12, Wright Street, Otley Road,
Bradford, in the West Riding of the County of York, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN APPARATUS FOR DOUBLING
AND TWISTING YARNS AND THREADS," to be as follows:-
-The apparatus consists of a lever attached to the twisting frame by a central
pivot on. which the lever freely moves. Near the end of one arm of the lever
is firmly fixed' a smooth pin or other contrivance, by means of which, so long
as the twisted thread or yarn is passing from the rollers: in its proper course,
the lever is retained in a position that keeps the other end from acting upon
the untwisted thread or yarn in its passage to the rollers. As soon however
as the continuity of the twisted thread or yarn is from any cause destroyed,
the lever is then free to act on the untwisted thread or yarn on the other side
of the rollers, which it does by a contrivance at the other end of the lever

page_text: seizing and destroying the continuity of the thread or yarn. This contrivance
consists of inclined blades fixed on an arm at the end of the lever in such a
position that when the lever is released by the breaking of the twisted thread
or yarn these blades come in contact with the untwisted thread or yarn. The
inner edge of the blades is set in the form of the letter V, and the blades are
set at such a relative angle with the central pivot of the lever and the direc-
tion of the untwisted thread or yarn that when these blades come in contact
with the untwisted thread or yarn the continued action of the rollers draws
the thread or yarn firmly into the apex of the angle of the blades by which
its continuity is destroyed and thereby much waste prevented.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Townend in the Great Seal Patent Office on the
1st December 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
TOWNEND, Mechanic, of Bradford, in the West Riding of the County of York,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of June, in the year of our Lord One
thousand eight hundred and sixty-five, in the twenty-eighth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said William Townend, Her special licence that I, the said William Townend,
my executors, administrators, and assigns, or such others as I, the said
William Townend, 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
APPARATUS FOR DOUBLING AND TWISTING YARNS AND THREAD," upon the con-
dition (amongst others) that I, the said William Townend, my executors or
administrators, by an instrument in writing under my, or their, or one of
their hands and seals, 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. >>
NOW KNOW YE, that I, the said William Townend, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-

page_text: formed, to be particularly described and ascertained in and by the following
statement:-
:
My Invention relates to machinery wherein two or more distinct threads or,
yarns, are brought in contact and afterwards doubled, or twisted together. In
machinery adapted for this purpose rollers are usually employed; the seperate,
or distinct threads or yarns are drawn betwixt these rollers from one side,
and on leaving the rollers at the other side they are doubled or twisted
together. At a convenient point I attach a central pivot on which a lever
freely moves. This lever is furnished at one end with a projecting smooth
pin or other contrivance over which the twisted or doubled thread or yarn,
after leaving the rollers freely passes, and so long as the said twisted or doubled
thread or yarn continues in its proper course-the lever is retained in such a
position that the contrivance at the other end of the lever cannot act upon
the untwisted thread or yarn. This contrivancé consists of inclined blades
fixed to a projecting arm at the other end of the lever. The inner edge of
the blades is set in the form of the letter V, and whenever the twisted thread
or yarn is broken, or its contact with the smooth pin or other contrivance
described above from any cause ceases, the lever is released and the inner
edge of the blades comes in contact with the seperate or untwisted threads.
The blades are fixed to the arm of the lever at such a relative angle with the
central pivot of the lever and the direction of the untwisted thread or yarn
that when they come in contact with this thread or yarn the continued action
of the rollers draws the thread or yarn firmly into the apex of the angle of
the blades and speedily destroys its continuity, thereby preventing much
waste.
And in order that the several parts of my Invention may be more readily
understood, I have appended to this my Specification a Sheet of Drawings
shewing arrangements of mechanism whereby the same may be carried into
practical operation, and which I now proceed to describe.
Figure 1 is an end section of the rollers, shewing the lever when retained
from acting, and dotted lines shew the position of the lever when released;
Figure 2 is an elevation of the lever; Figure 3 is a bird's-eye view of the lever.
a is the lever; b, the blades; c, the smooth pin; d, the roller frame to
which the central pivot is firmly attached; e a loop or eye through which
the seperate threads are gathered on their passage to the rollers; r, r¹, the
rollers; t, t, the untwisted or seperate threads; and t2 the twisted thread.
Having thus described the nature of my Invention, and the manner of
applying the same, I would have it understood that I claim as being of my
Invention the use of a lever or other mechanical contrivance whereby so soon

page_text: as the continuity of the twisted thread is destroyed, or by any means the said
thread gets out of its proper course, a blade or blades is at liberty to act on
the untwisted thread and destroy its continuity; but I do not confine myself
to the particular arrangement described, as the same may be varied to suit
different arrangements of doubling frames and in other ways.
In witness whereof, I, the said William Townend, have hereunto set
my hand and seal, this Twenty-fourth day of November, in the year
of our Lord 1865
Signed, sealed, and delivered by the
within-named William Townend,
in the presence of
W. H. LEATHER.
WILLIAM TOWNEND. (L.s.)