IMPROVEMENTS IN TM ALAVALNERI TUM SPINNING FIBROUS MATERIALS.
Year: 1873

page_text: LETTERS PATENT to William Jenkinson, of the Ham Mills, Stroud, in
the County of Gloucester, for the Invention of "IMPROVEMENTS IN
TM
ALAVALNERI TUM
SPINNING FIBROUS MATERIALS.
Sealed the 23rd December 1873, and dated the 24th October 1873.
PROVISIONAL SPECIFICATION left by the said William Jenkinson at the
Office of the Commissioners of Patents, with his Petition, on the
24th October 1873.
.
I, WILLIAM JENKINSON, of the Ham Mills, Stroud, in the County of
Gloucester, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY FOR SPINNING FIBROUS MATERIALS," to be as
follows:
The object of this Invention is to improve the backing off mechanism
of self-acting mules to allow of the driving strap of the mule being
thrown out of action without at once throwing into gear the backing-off
motion, in order to allow the speed of the mule to partially die away
before bringing into action the backing-off gear. For this purpose I

page_text: employ two catches, one for controlling the time of throwing off the
driving strap from the fast pulley which drives the spindles to the pulley
which backs off the mule, and the other for letting into action the
friction wheel for backing off, and I provide means for readily governing
the interval between the time of throwing off the one catch and the
other.
According to one arrangement a lever arm is fixed on to the cross
shaft which actuates the friction box for backing off.
At the extremity of the arm is a stud, to which is jointed a lever
catch resting upon and held by the twist gear of the mule. Another
catch lever is jointed to the usual strap lever of the mule; this catch
also hooks over and is retained by the twist gear before mentioned, and
its nose rests upon a screw set pin carried at the extremity of the lever
catch first mentioned; this catch is lifted by the usual finger or stud of
the twist wheel, and as it is raised it raises the lever catch which is
jointed to the strap lever, and releases this catch before it is itself
released, so throwing the strap at once on to the pulley which backs off
the mule, thus decreasing the speed of the spindles, and as by their
momentum the spindles continue to rotate the finger or stud continues
to lift the catch which is jointed to the arm on the shaft which actuates
the friction box for backing off, and releases this catch, so throwing the
backing-off mechanism into gear.
According to another arrangement a lever catch is attached to the
usual strap lever, with its catch resting upon and held by the twist gear
of the mule; this lever is lifted by the usual stud on the twist wheel,
and its catch being liberated the driving strap is allowed to run imme-
diately on to the pulley for backing off.
Another lever, which may be jointed to the headstock, has jointed to
it at one end a catch, which also rests upon the twist gear. The other
end. of the lever has resting against it the ordinary lever for forcing in
the friction wheel for backing off. The catch above mentioned is raised
by means of the stud on the usual twist wheel of the mule, and when it
is thus raised it shifts the lever to which it is jointed, and brings the end
of the lever opposite a notch formed in the lever, which forces in the
friction clutch for backing off, and allows this lever to come forward and
throw in the friction clutch.

page_text: Means of adjustment are provided either in the connection between
the catch and the lever to which it is jointed, or in the portion of the
catch connected with the strap lever, which is acted upon by the stud. on
the twist wheel to allow of the time of throwing in the friction clutch
for backing off, being regulated so that the speed of the spindles may be
decreased at the desired time before throwing in the backing-off. gear.
SPECIFICATION in pursuance of the conditions of the Letters Patent,-
filed by the said William Jenkinson in the Great Seal Patent Office.
on the 24th April 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
JENKINSON, of the Ham Mills, Stroud, in the County of Gloucester; send'
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of October, in the
year of our Lord. One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Jenkinson, Her special.
license that I, the said,William Jenkinson, my executors,, administrators,
and assigns, or such others as I, the said William Jenkinson, 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 FOR SPINNING FIBROUS MATERIALS," upon the condition (amongst
others) that I, the said William Jenkinson, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain tho
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 Jenkinson, do hereby declare;

page_text: performed, to be particularly described and ascertained in and by the,
following statement thereof, that is to say :-
The object of this Invention is to improve the backing-off mechanism
of self-acting mules to allow of the driving strap of the mule being.
thrown out of action without at once throwing into gear the backing-off
motion, in order to allow the speed of the mule to partially die away
before bringing into action the backing-off gear. For this purpose I
employ two catches, one for controlling the time of throwing off the
driving strap from the fast pulley which drives the spindles to the pulley
which backs off the mule, and the other for letting into action the
friction wheel for backing off, and I provide means for readily governing
the interval between the time of throwing off the one catch and the
other. For this purpose a lever arm is fixed on to the cross shaft which
actuates the friction box for backing off.
At the extremity of the arm is a stud, to which is jointed a lever
catch resting upon and held by the twist gear of the mule. Another
catch lever is jointed to the usual strap lever of the mule; this catch
also hooks over and' is retained by the twist gear before mentioned.
Through the nose of this lever passes a screw set pin, which rests upon.
the extremity of the lever catch before mentioned; this catch is lifted
by the usual finger or stud of the twist wheel, and as it is raised it raises.
the lever catch which is jointed to the strap lever, and releases this catch
before it is itself released, so throwing the strap at once on to the pulley:
which backs off the mule, thus decreasing the speed of the spindles, and
as by their momentum the spindles continue to rotate the finger or stud a
continues to lift the catch, which is jointed to the arm on the shaft
which actuates the friction box for backing off and releases this catch, so
throwing the backing-off mechanism into gear.
In order that my Invention may be fully understood, and readily
carried into effect, I have shewn in the Drawings hereunto annexed side a
views of the lever catches I employ, and also a side view of the lever
arm which is fixed on to the cross shaft which actuates the friction box..
A shews the lever arm; B is the lever catch which is jointed to the
arm A. by the stud a. The catch b rests upon and is retained by the
twist gear of the mule. C is the lever catch which is jointed at c on to g
the usual strap lever of the mule; the catch d of this lever is also'
retained by the twist gear of the mule. The screw set pin e passes:

page_text: through the end of lever C, and rests upon the nose fof lever B, so that
as the lever B is raised by the usual stud of the twist wheel of the mule,
the lever C is also raised and the catch d liberated from the twist gear,
the time of liberation being adjusted by the screw set pin e.
d* is an
incline or curve to throw the catch up so that the set screw shall fall
upon the top of the nosef of catch B, when it again comes into action.
The arrangement above described is mainly applicable to the mules
known as Tatham's mule.
Having thus described the nature of my Invention, and the manner
of performing the same, I would have it understood that I claim, the
combined arrangement of catches substantially as herein described for
controlling the throwing into gear of the backing-off mechanism of self-
acting mules.
In witness whereof, I, the said William Jenkinson, have hereunto
set my hand and seal, this Nineteenth day of April, in the year of
our Lord One thousand eight hundred and seventy-four.