IMPROVEMENTS APPLICABLE TO SELF-ACTING MULES FOR SPINNING AND DOUBLING
Year: 1858

page_text: by the Act.)
PROVISIONAL SPECIFICATION left by James Taylor, John Lang, and
James Uttley at the Office of the Commissioners of Patents, with their
Petition, on the 28th July 1858.
We, JAMES TAYLOR, JOHN LANG, and JAMES UTTLEY, of the firm Taylor,
Lang, and Company, Machine Makers, Castle Iron Works, Stalybridge, in the
County of Chester, do hereby declare the nature of the said Invention for
"IMPROVEMENTS APPLICABLE TO SELF-ACTING MULES FOR SPINNING AND DOUBLING,"
to be as follows:-
Our Invention applies to that class of self-acting mules in which the head-
stock is constructed upon that principle known as Sharp, Roberts, and
Company's, that is where a cam shaft is employed for effecting the changes in
the working of the operating parts, when such cam shaft is rotated by means
of a friction and contact pulley: Hitherto the friction pulley has been placed
on an axis in a fixed (rigid) position, and so close to the "contact pulley,"
that the leather surface of the friction pulley will give sufficient adhesion to
rotate the "contact pulley," and with it the cam shaft, spaces being cut out of
the periphery of the contact pulley so that the friction pulley can revolve
without touching the "contact pulley" when the cam shaft is stationary.
Now with this arrangement of the friction and contact pulley, the cam shaft

page_text: frequently misses or acts too late, owing to the starting spring not having
sufficient power to cause the "contact pulley" to "bite" upon the "friction
pulley," or owing to the friction pulley having insufficient adhesion or hold
upon the "contact pulley."
Our Invention consists in arranging the friction pulley, so that it will, when
acting upon the "contact pulley," be pressed against it by the force of a spring
or weight, and this is accomplished by arranging the axis of the friction pulley
in sliding bearings or in a frame capable of oscillating, the sliding bearings or
oscillating frame being acted upon so as to force the "friction pulley " against
the contact pulley by a weight or spring, a suitable stop being provided to
prevent the friction pulley" from being forced against the space or spaces
removed from the periphery of the "contact pulley," when the cam shaft is
held by the "escape plate."
escape plate." Our Invention also consists in arranging the
action of the friction pulley so as to dispense with the spaces formed in the
periphery of the "contact pulley," by means of a cam or a cam surface attached
to or formed on the edge of the" contact pulley," which will be shaped to push
back the "friction pulley" (which is arranged to slide or oscillate in a frame,
as before described,) from the "contact pulley" in those positions where the
cam shaft is brought to a stand by the escape plate, which cam or cam surface
will allow the "friction pulley" to come upon the "contact pulley" the
moment it is moved by the starting spring; by this arrangement the operation
of the cam shaft is made more certain and less difficult to start. Our Inven-
tion also consists in driving the friction pulley by geering from the short
intermediate or "going in shaft."