IMPROVE- MENTS IN MACHINERY OF ADDANAMUS
Year: 1861

page_text: LETTERS PATENT to Richard Threlfall, of Bolton, in the County of Lan-
caster, Machine Maker and Founder, for the Invention of "IMPROVE-
MENTS IN MACHINERY OF ADDANAMUS
a
Sealed the 21st January 1862, and dated the 24th July 1861.
PROVISIONAL SPECIFICATION left by the said Richard Threlfall at the
Office of the Commissioners of Patents, with his Petition, on the 24th
July 1861.
I, RICHARD THRELFALL, of Bolton, in the County of Lancaster, Machine
Maker and Founder, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SPINNING COTTON OR OTHER
FIBROUS MATERIAL," to be as follows:-
This Invention relates to improvements in the self-acting mule for governing
the chopping faller whilst coiling the yarn on the spindles at the time the
carriage has receded to the roller beam by connecting the faller with the
backing-off scroll, to which scroll is attached a friction pulley with band, strap,
or other material acting as such, lapped one or more times round, each end of
the band or other material being fastened to a stud with a screw at one end to

page_text: adjust the required friction on the pulley. By this means the backing-off
scroll is kept in its proper position till the carriage bas receded to the roller
beam, when it commences governing the faller whilst rising to the spindle
point.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Threlfall in the Great Seal Patent Office on the
24th January 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
THRELFALL, of Bolton, in the County of Lancaster, Machine Maker and
Founder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of July, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fifth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Richard Threlfall, Her special licence that I, the said Richard Threlfall,
my executors, administrators, and assigns, or such others as I, the said
Richard Threlfall, 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
MACHINERY OR APPARATUS FOR SPINNING COTTON OR OTHER FIBROUS MATERIAL,"
upon the condition (amongst others) that I, the said Richard Threlfall, 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 per-
formed, 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 Richard Threlfall, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement (that is to say) :-
This Invention relates to the self-acting mule, and consists in an improved
mode of governing the copping faller whilst the yarn is being coiled on the
spindles, at the time the carriage has receded to the roller beam; and also in

page_text: an improved mode of receding the carriage at any desired speed, according to
the number of the yarn to be spun.
This Invention will be clearly understood by referring to the letters on the
Figure in the accompanying Drawing, which represents a transverse view of
the carriage, and parts connected with it, of a self-acting mule having my
improvements attached.
In order to govern the motion of the copping faller, I attach to the backing-
off scroll a a friction pulley, lapped one or more times by a strap or band b,
or other material acting as such. One end of the said band or material is held
by a knot c, or other contrivance, and the other end connected to a screw d,
passing through the nut e, for the purpose of adjusting the required friction on
the pulley. By means of the friction band b, the backing-off catch fis held in
contact with the ratchet wheel g, when the carriage has arrived at the roller
beam; and as the copping faller is unlocked, it is prevented from rising too
suddenly by the said catch, only allowing it to rise according to the speed of
the tin roller by the action of the friction band on the periphery of the
scroll plate.
3 per-
In order to cause the carriage of the self-acting mule after the stretch is
formed to recede towards the roller beam at any desired speed, according to
the number of the yarn to be spun, I fix to the twist shaft k, which makes one
revolution in a stretch, a tappet or curved plate l, which acts against the sus-
pended lever m, and, moves it in the direction of the arrow, whilst the last
portion of the twist is being put into the yarn. The said lever m is connected
to the rod n, jointed to the upright lever o, working on the stud p, fixed to the
framework q. The upright lever o carries the ordinary catch lever r, working
on the stud s, there being a bracket t to regulate the position of the said catch
lever. In the Figure the carriage is represented as going out in the action
of spinning, and the stud u has to travel over the curved part v, and finally to
fall in the slot w, which allows time for the second stretch to be performed.
When the stud has fallen into the slot, the receding of the carriage takes place,
the distance of which is regulated by the tappet or curved plate l, which
shortens the distance of the length of stretch, and enables the mule to spin
counts of yarn never before accomplished, the form of the tappet / being
varied as required to suit the number of yarn to be spun. The unlocking of
the catch lever r is performed in the ordinary manner by the descent of the
rod x, having upon it the tappet or presser y, which acts upon the projection z
and depresses the catch lever r, so that the stud u is liberated from the slot w,
and allows the carriage to be put up, the rod a being acted upon by the
putting-up rod.

page_text: Having now described the nature and particulars of my said Invention, and
the manner in which the same is to be performed, I desire it to be understood
that I claim in self-acting mules, the improved mode of causing the faller to
rise exactly in proportion to the speed of the tin roller, and also the improved
mode of receding the carriage towards the roller beam at any desired speed.
according to the number of the yarn to be spun, as such improvements are
herein described and illustrated in the accompanying Drawing.
In witness whereof, I, the said Richard Threlfall, have hereunto set
my hand and seal, this Twenty-second day of January, in the year of
our Lord One thousand eight hundred and sixty-two.
Signed, sealed, and delivered by the
within-named Richard Threlfall, in
the presence of
RICH. JONES,
Book-keeper,
Bolton.
RICHARD THRELFALL. (L.s.)