IMPROVEMENTS IN SELF ACTING MULES FOR SPINNING WOOL AND OTHER FIBRES
Year: 1879

page_text: LETTERS PATENT to William Hunt, of Diggle, in the County of York, Spinner,
and William Buckley Hollingworth, of Dobcross, in the County of York, for
the Invention of "IMPROVEMENTS IN SELF ACTING MULES FOR SPINNING WOOL
AND OTHER FIBRES."
Sealed the 12th August 1879, and dated the 15th February 1879.
PROVISIONAL SPECIFICATION left by the said William Hunt and William
Buckley Hollingworth at the Office of the Commissioners of Patents on
the 15th February 1879.
WILLIAM HUNT, of Diggle, in the County of York, Spinner, and WILLIAM
BUCKLEY HOLLINGWORTH, of Dobcross, in the County of York. "IMPROVEMENTS
IN SELF ACTING MULES FOR SPINNING WOOL AND OTHER FIBRES."
The object of this Invention is to gradually move the straps from one pulley to
another pulley after the twist has been put in the yarn, whereby the sudden jerk
caused by the change and backlash of the wheels and bands is avoided.
The improvements consist in attaching a catch to the. strap guide, which takes
into a worm or scroll placed on the change shaft or "backing off shaft," so that
when the straps are being transferred from one pulley to the other (after the twist
has been put in the yarn) it is moved gradually by the worm or scroll, thus
bringing the working parts of the machine to a gradual stand before reversing the
direction of the carriage. Worms or scrolls of various pitch may be used for
regulating the transfer of the strap from pulley to pulley.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Hunt and William Buckley Hollingworth in the Great Seal
Patent Office on the 15th August 1879.
WILLIAM HUNT, of Diggle, in the County of York, Spinner, and WILLIAM
BUCKLEY HOLLINGWORTH, of Dobcross, in the County of York. "IMPROVEMENTS
IN SELF-ACTING MULES FOR SPINNING WOOL AND OTHER FIBRES."
The object of this Invention is to move the driving strap from one pulley to
another after the yarn has been twisted, whereby the sudden jerk caused by the
change and the back lash of the wheels and bands is avoided.
Our improvements consist in attaching a catch to the strap guide, which takes
into or lodges in a worm or scroll placed on the change shaft or backing-off shaft,
so that when the strap is being transferred from one pulley to the other (after the
twist has been put in the yarn) it is moved gradually by the worm or scroll, thus
bringing the working parts of the machine to a gradual stoppage before reversing
the direction of the carriage. The actual time occupied by the transfer of the strap
will of course depend upon the pitch of the worm or scroll.
In the accompanying Sheet of Drawings, Fig. 1 is an elevation of so much of the
headstock as is necessary for the purpose of illustrating our Invention; Fig. 2 is
detail.
-
A is the strap guide to which is attached a catch B which rests upon a screw or
worm C placed on the change shaft D. When the strap guide is released the spiral
springs E draw it from the pulley F to the pulley G, but as soon as the movement
commences the catch B enters the groove or channel of the screw or worm C and
the motion is retarded according to the " 'pitch' of the screw. The strap thus
passes gradually from one pulley to the other and so prevents the sudden jerk
which now occurs at every change, causing vibration of machinery and damage to
the bands and straps, besides causing them to slip. The backing-of clutch being
actuated by the strap guide is placed in gear gradually, thus reducing the noise and
liability to breakage.
Having thus described the nature of our Invention, and shewn by Drawings
how the same is to be or may be carried into practice, we would have it understood
that we claim,-
The employment of the parts B and C or their mechanical equivalent for
retarding the passage of the strap from one pulley to the other, substantially as
herein shewn and described.
In witness whereof, I, the said William Buckley Hollingworth, for and on
behalf of myself and William Hunt, have hereunto set my hand and
seal, this Twelfth day of August, in the year of our Lord One thousand
eight hundred and seventy nine.
T
W. D. HOLLINGWORTH. (L.S.)