IMPROVEMENTS IN THE CONSTRUCTION OF SELF ACTING MULES AND TWINERS USED FOR SPINNING AND DOUBLING WOOL AND OTHER FIBROUS SUBSTANCES
Year: 1879

page_text: LETTERS PATENT to John Chisholm, of Oldham, in the County of Lancaster,
for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF SELF ACTING
MULES AND TWINERS USED FOR SPINNING AND DOUBLING WOOL AND OTHER
FIBROUS SUBSTANCES."
Sealed the 3rd October 1879, and dated the 12th July 1879.
PROVISIONAL SPECIFICATION left by the said John Chisholm at the Office
of the Commissioners of Patents on the 12th July 1879.
"IMPROVEMENTS IN
JOHN CHISHOLM, of Oldham, in the County of Lancaster.
THE CONSTRUCTION OF SELF-ACTING MULES AND TWINERS USED FOR SPINNING
AND DOUBLING WOOL AND OTHER FIBROUS SUBSTANCES."
My Invention is designed principally to be applied to woollen mules and twiners,
but may also be adapted to mules and twiners employed for spiuning and doubling
other fibrous substances.
The Invention relates to the "jacking-in".or "twisting in" motion, and is
intended to prevent the possibility of the "winding click "falling into gear before
the "backing-off" of the yarn from the spindles has been completely effected.
"
For this purpose I apply a brake to the "winding click plate" with sufficient
pressure to prevent the winding chain from getting slack during the "jacking-in
of the mule and "backing-off" of the spindles..
The brake when out of action rests upon the extreme end of a vertical lever.
The other end of this lever rests upon a projection from the "latch lever" of the
ordinary motion for "jacking-in." The winding click is kept out of action by a
sliding disc on which rests a projecting pin from the winding click.
The sliding disc has a groove in which the end of a bell crank lever is inserted,
the other arm of this lever being extended so as to be acted upon by an arm from
the "fish jaw" or from the "monkey-tail-shaft."
To the bell crank lever is attached a spiral spring for keeping the sliding disc
under the projecting pin in the winding click.

page_text: "
"
The mule having made its run out and adjusted to the amount of "jacking
required the jacking motion and brake are put into action simultaneously. When
the backing-off" is completed_the_arm from the "fish_jaw "depresses-the-arm-of-
the bell crank lever, and simultaneously removes the sliding disc from under the
winding-click, raises-the-brake-from-the-click- plate, and allows the vertical lever to
be placed under the brake: The winding and "run in."-of-the-carriage takes place.
in the usual way.
When the fallers are unlocked the arm from the "fish jaw" is removed from the
bell crank lever and allows the spiral¯spring to place the sliding disc under the
click pin, and the brake to drop on the top of the vertical lever.
By these improvements I dispense with the ordinary holding out latch.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Chisholm in the Great Seal Patent Office on the 12th January
1880.
JOHN CHISHOLM, of Oldham, in the County of Lancaster.
"IMPROVEMENTS IN
THE CONSTRUCTION OF SELF-ACTING MULES AND TWINERS USED FOR SPINNING
AND DOUBLING WOOL AND OTHER FIBROUS SUBSTANCES."
My Invention is designed principally to be applied to woollen mules and twiners,
but may also be adapted to mules and twiners employed for spinning and doubling
other fibrous substances.
The Invention relates to the "jacking in" or "twisting in," motion and is
intended to prevent the possibility of the "winding click" falling into gear before
the backing off of the yarn from the spindles has been completely effected.
Such being the nature and object of my said Invention, I will now proceed to
describe in detail the manner in which the same is to be or may be performed or
carried into practical effect, and in order that the same may be clearly understood
I have annexed hereunto a Sheet of Drawings illustrative thereof, and have marked
the same with figures and letters of reference corresponding with those in the
following explanation thereof.
Fig. 1 in the annexed Drawing is a, side elevation, Fig. 2 a plan view, and Fig. 3
a front elevation of so much of a woollen mule as is necessary to illustrate my
Invention. a, a, is the "tin roller shaft ";" b, b, the "backing off" cam; and c, c,
the monkey tail shaft ;" and d, d, the "winding click plate.'
To this plate I apply a brake e, e, with sufficient pressure to prevent the winding
chain f, f, from becoming slack during the "jacking-in" of the mule and "backing.
off" of the spindles.
The brake e, e, when out of action rests on the upper end of a vertical stop
lever g, g.
The other end g* of this lever rests upon a projection h* from the "latch lever "
h, h, of the ordinary motion for "jacking-in."
The winding chick i, i, is kept out of action by a sliding disc or cone k, k, on
which rests a pin l, l, projecting from the winding click.
The sliding disc or cone k, k, is provided with a groove or neck in which the end
of a bell crank lever m, m, is inserted, the other or horizontal arm m* of this lever
being extended so as to be acted upon by an arm n, n, from the "fish jaw" o, o, or
the "monkey tail" shaft c, c.
To the bell crank lever m, m, is attached a spiral spring p, p, (see Fig. 3,) for
keeping the sliding disc or cone k, k, under the projecting pin l, l, of the winding
click.
The mule carriage having made its "run out," and having been adjusted to the
amount of "jacking-in" required, the "jacking" motion and the brake e, e, are put
into action simultaneously by the latch lever h coming in contact with the adjustable
rod attached to the framing.
When the "backing-off" is completed the arm n, n, from the "fish-jaw" o, o,
depresses the arm m* of the bell-crank lever, and thus simultaneously causes the
arm m to remove the sliding disc or cone k, k, from under the pin l, l, of the winding
click i, i, so as to let the latter fall into action. And at the same time the projecting
finger mx of the bell crank lever (see Fig. 3) acting against the incline ex at the
end of the brake e, e, raises the brake from the "click-plate" d, d, and allows the
vertical stop lever g, g, to come under and support the brake out of action.
The "winding-on" and the "run-in" of the carriage take place in the usual
manuer.
When the "fallers" are unlocked the arm n, n, from the "fish-jaw" o, o, is
removed from the bell-crank lever m, m, and allows the spiral spring p, p, to place

page_text: -with-
Having now described the nature and object of my said Invention, together with
the manner in which the same is to be or may be performed or carried into practical
effect, I wish it to be understood that I claim as my Invention,―
First. The application of a brake (substantially as shown and described) to arrest
the motion of the "winding-click-plate" during the "twisting-in" and "backing-
off" of the mule.
Secondly. I claim the connection of the said brake to the ordinary "latch-lever"
-of-the-draw-back-"-motion--for applying-the brake, substantially-as-shown-and-
described; and,
Thirdly. I claim the arm projecting from the "monkey-tail-shaft," or from the
"fish-jaw," for the purpose of throwing the brake off, substantially as shown and
described.
In witness whereof, I, the said John Chisholm, have hereunto set my hand
and seal, this Ninth day of January, in the year of our Lord One thousand
· eight hundred and eighty.
JOHN CHISHOLM. (L.S.)