IMPROVEMENTS IN MULES USED IN SPINNING WOOL and other FIBROUS SUBSTANCES
Year: 1877

page_text: LETTERS PATENT to John Thurlow, of Wakefield, in the County of York,
for the Invention of "IMPROVEMENTS IN MULES USED IN SPINNING WOOL
and other FIBROUS SUBSTANCES.”
Sealed the 6th July 1877, and dated the 9th January 1877.
PROVISIONAL SPECIFICATION left by the said John Thurlow at the Office
of the Commissioners of Patents on the 9th January 1877.
JOHN THURLOW, of Wakefield, in the County of York. "IMPROVEMENTS. IN
MULES USED IN SPINNING WOOL AND OTHER FIBROUS SUBSTANCES."
My Invention has reference to mules used in spinning wool and other fibrous
substances, and to that part thereof whereby the change of speed or what is known
as the
double speed motion" is obtained.
<<
On the motion rod which is used for shipping and unshipping the belts I provide
an adjustable stop, which may be fixed in any suitable position thereon. In con-
nection with this stop is provided a catch arrangement, this arrangement being
actuated by the movement of the mule frame. This stop motion being adjustable
the attendant can so adjust it as to allow the change from the fast to the slow speed
or vice versa, at any position of the traverse of the frame. On a suitable carrier I
provide a bracket on which is mounted a tappit lever actuated by the travelling
frame; this lever is attached to the herein-before mentioned motion rod and belt
fork bar; this tappit motion has the effect of changing the speed of the machine. I
dispense with the spring ordinarily used for assisting in the change of speed and
attach a weight to the belt fork bar, or any other convenient part in connection
therewith, to produce the same effect; this prevents the great strain on the frame-
work which is caused when the spring is used and renders the change of speed
much more easily effected.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Thurlow in the Great Seal Patent Office on the 9th July
1877.
JOHN THURLOW, of Wakefield, in the County of York.
"IMPROVEMENTS IN
MULES USED IN SPINNING WOOL AND OTHER FIBROUS SUBSTANCES."
My Invention has reference to mules used in spinning wool and other fibrous
substances, and to that part thereof whereby the change of speed or what is known
as the "double speed motion" is obtained.
On the motion rod which is used for shipping and unshipping the belts I provide
an adjustable stop which may be fixed in any suitable position thereon. In con-
nection with this stop is provided a catch arrangement, this arrangement being
actuated by the movement of the mule frame. This stop motion being adjustable
the attendant can so adjust it as to allow the change from fast to the slow speed, or
vice versa, at any position of the traverse of the frame. On a suitable carrier I
provide a bracket on which is mounted a tappit lever actuated by the travelling
frame; this lever is attached to the herein-before mentioned motion rod and belt
fork bar; this tappit motion has the effect of changing the speed of the machine.
I dispense with the spring ordinarily used for assisting in the change of speed and
attach a weight to the belt fork bar or any other convenient part in connection
therewith to produce the same effect; this prevents the great strain on the frame-
work which is caused when the spring is used, and renders the change of speed
much more easily effected.
And in order that my Invention may be more completely understood, reference
is given to the accompanying Sheet of Drawings and to the letters and marks
thereon.
DESCRIPTION OF DRAWINGS.
Figure 1 is an elevation of part of a frame of a mule sufficient to shew my
improvements as applied thereto; Figure 2, a plan view of Figure 1.
Figures 3 and 4 are end elevations of various parts to be described hereafter.
a is a portion of the framework of the mule; b is the motion rod which is used for
This
shipping and unshipping the belts on which is provided the adjustable stop c.
may be fixed in any suitable position on the motion rod b. In connection with this
stop is provided a catch d mounted on the stud e which may readily be adjusted in
the slot on the framework; g is the traversing carriage of the mule, the movement
of which operates on the catch d. For this purpose I provide on the carriage g an
arm or bracket h on which is mounted so as to run freely a runner i; this runner i
at a certain point of the traverse G comes in contact with the catch dat j, by which
the catch d causes the stop c to move in the direction shown by arrow, carrying
with it the motion rod b, which movement is transmitted through the lever k to the
rod l, to which I connect the strap-fork lever m which is attached to the bar n. By
this operation the belt fork or strap is transferred from pulley o to the pulley p
and thereby effecting a change in the speed of the machine. I dispense with the
spring which is usually placed at q on the rod b, and use for assisting the change of
the speed a weight rattached to the belt fork bar n by means of the rope or chain s
or to any other convenient part of the machine; this prevents the great strain on
the framework which is caused when the spring is used; t is a tappit lever which is
caught on the return motion of the frame by the finger u, whereby the belt is re-
turned to the pulley o. Other parts shewn in the Drawings but not explained are
of ordinary construction.
Having now described the nature of my said Invention and shewn by Drawings
how the same may be carried into practice, I would have it understood that
I do not limit myself to the exact limits, details, or configuration of the various
parts I have explained and shewn, as the same may of course be varied or modified
without in any way departing from the nature of my said Invention, but what I do

page_text: claim and desire to be secured to me by Letters Patent, is the means or apparatus
employed for shipping and unshipping the belts of mules, substantially as and for
purposes herein set forth.
In witness whereof, I, the said - John Thurlow, have hereunto set my hand
and seal, this Sixth day of July, in the year of our Lord One thousand
eight hundred and seventy-seven.
Witness,
J. W. HARDING,
I
Engineer and Patent Agent,
2, East Parade,
Leeds.
JOHN THURLOW. (L.S.)