NEW MODE OP.TWISTING, SPINNING, OR THROWING SILK, COTTON, WOOL, LINEN, OR. OTHER. THREADS OF FIBROUS SUBSTANCES
Year: 1824

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
LEIGH BRADBURY, of Manchester, in the County Palatine, of Lancaster,
Gentleman, send greeting.
WHEREAS His most Excellent Majesty King George the Fourth did,
by His Letters Patent, under the Great Seal of the United Kingdom of
Great Britain and Ireland called England, bearing date at Westminster, the
Third day of July, One thousand eight hundred and twenty-four, give and
grant unto me, the said John Leigh Bradbury, my executors, administrators,
and assigns, His special licence, full power, and sole privilege and authority,
that I,. the said John Leigh Bradbury, my, executors, administrators, and
assigns, during, the term of years therein expressed, shall and lawfully might
make, use, exercise, and vend, within England, Wales,. and the Town of
Berwick-upon-Tweed, my invented or found out "NEW MODE OP.TWISTING,
SPINNING, OR THROWING SILK, COTTON, WOOL, LINEN, OR. OTHER. THREADS OF
FIBROUS SUBSTANCES;" in which said Letters Patent there is contained.a pro-
viso,, obliging, me, the said John Leigh Bradbury, by an instrument in writing.
under my hand and seal, to cause a particular description of the nature of
my said Invention, and in what manner the same is to be performed, to be
inrolled in His Majesty's High Court of Chancery within two calendar months
next and immediately after the date of the said recited. Letters Patent, as
in and by the same, relation being thereunto had, may more fully and at.
large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
John Leigh Bradbury, do hereby declare that the nature of my said Inven-
tion, and the manner in which the same is to be performed, are particularly
described and ascertained in and by the Drawing hereunto annexed, and
the following description thereof (that is to say):-
My said Invention consists in certain new improvements and variations in
and on my former Patent, dated March Ninth, One thousand eight hundred
and sixteen, for certain improvements in the machinery for spinning of
cotton, flax, wool, tow, worsted, or any other fibrous substances, and in the
adaptation of the cotton spinning frame, usually called or known by the name
of the mule, to the purpose of twisting or throwing silk in its natural fibre.
In the aforesaid Patent I have specified certain means or methods of causing
the motion of the mechanism for each thread to depend on the continuity of
its texture, insomuch as to stop a portion of that mechanism the moment any
rupture happens to such thread by the drag of the bobbin, or from any other
cause. The form and disposition of these my said new invented improvements
are shewn in Figures 1, 2, and 3 of the annexed Sheet of Drawing; their
object, as before observed, is to cause that portion of machinery attached
to one twisting spindle to stop when the thread which it usually acts upon is
broken, and thus to avoid waste, a thing of much importance when the
material used is of a costly nature. The manner of performing this operation,
mechanically speaking, has been explained in my fore-cited Specification; but
here the process itself is somewhat different, without, however, giving rise to
any change of principle. In Figures 1, 2, and 3, this process is represented
at a, b, c, d, e, f, o. e, o, is the lever-revolving axis (shewn at U, U, of my former
Specification). In the present Figures, f is the balance lever, which by the
pressure of the thread (whilst whole) on the eye 9 is kept in such a position
as to permit the said axis e to revolve without any effect on that part of the
machine; from h there ascends a pushing bar up to d, where, widening and
becoming forked, so as to enter the grooves of the roller stand i, i, it supports
in the usual state of things the axis d of one of the three rollers c, d, y, placed
over each other. Underneath the middle roller d is the roller y, common to
all the threads, and which is also constantly turning and carrying round as
many spur wheels as there are threads, and which said wheels geer with
similar ones connected with the rollers d. Finally, over the rollers d run the
top rollers 2, under and around which the threads pass from the feeding
bobbins a to the receiving bobbins below f, g. On the bar f is an inclined
plane h, which, when the bar is drawn out by the engagement of the part o

page_text: with the revolving pin e, lifts up the roller d by the forked bar h, d, and thus
disengages the two geering wheels z, d, stopping thereby both the upper rollers
d, d, and preventing the production of waste. All this then is the consequence
of a thread breaking; nor can the machinery in that place commence going
till the thread is mended and the barf pushed into its present position; but when
that is done, the rollers 1, d, will resume their former situations by the retro-
cession of the inclined plane h, and thus is the important effect brought about
of preventing the accumulation of filament on the rollers from the continued
motion of the machine in the absence of the attendant. It is to be observed,
that the twisting spindle below 9 is a common spindle, and is treated in exactly
the same way as in the spinning machine termed the throstle; and, moreover,
s is the place of an horizontal drum like that of that machine, and the further
description of which, therefore, would be superfluous in this place. In order
better to fulfil the proviso contained in His Majesty's said Letters Patent, I
have given this stopping machinery on a larger scale in Figures 2 and $, but
without any framing, whence the size of its parts and their mode of acting
will be the more clearly seen. The scale of the latter Figures is four inches
to a foot, and that of Figure 1 two inches. The similar parts are marked
with the same letters in all the Figures, either of which, therefore, may be
adverted to in reading the above description..
Secondly, I claim as my Invention the application of a portion of the spinning
machine called a mule to the purposes of twisting or throwing of silk or other
fibre already formed, which machine is now in use, but not for the above
stated purpose. The silk or fibre is first wound single or double on bobbins,
which bobbins are to be placed at the back of the mule, as shewn at A, in
Figure 4, where what are now called the rovings are usually placed. The
silk (for in this part of the description I confine myself to silk, in the natural
fibre, not waste silk,) already formed then passes between two rollers at B and
on to the spindle C. D is the moveable carriage, having the spindles upon it,
in every respect similar to those on the mules in use; but the operation of
which, for the purpose of twisting silk or other fibre, already formed as afore-
said, is as follows:-As the rollers B turn out the silk, &c. the carriage D
recedes, the spindles C at the same time twisting the silk, &c.; when at the
proper distance, the rollers B and carriage D stop, and the silk, &c. so turned
out and twisted is guided by the drop rod E, and wound upon the spindle C
as the carriage D is pushed back. Other modes may be devised for the pur-
pose of delivering the silk, &c. to the spindles; but I claim the application of
the receding and approaching carriage and spindles for the purpose of twisting

page_text: silk, &c. as my Invention. Any of the spinning machines called mules may
be made applicable to this purpose by removing all the rollers except those
termed the front rollers.
In witness whereof, I, the said John Leigh Bradbury, have hereunto set
my hand and seal, this Thirty-first day of August, One thousand eight
hundred and twenty-four.
JOHN LEIGH (L.s.) BRADBURY.
Signed, sealed, and delivered, being first duly
stamped, in the presence of
WILL. ALLWAY,
12. George Street. Adelphi.
AND BE IT REMEMBERED, that on the First day of September, in the
year above mentioned, the aforesaid John Leigh Bradbury came before our
Lord the King in His Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained, in form above written. And 1
also the Specification aforesaid was stamped according to the tenor of the
Statute in that case made and provided.