IMPROVEMENTS IN MULES FOR SPINNING
Year: 1870

page_text: LETTERS PATENT to Thomas Rawsthorne, of Preston, in the County
of Lancaster, Cotton Spinner, for the Invention of "IMPROVEMENTS IN
MULES FOR SPINNING."
Sealed the 6th December 1870, and dated the 23rd September 1870.
PROVISIONAL SPECIFICATION left by the said Thomas Rawsthorne
at the Office of the Commissioners of Patents, with his Petition,
on the 23rd September 1870.
I, THOMAS RAWSTHORNE, of Preston, in the County of Lancaster,
Cotton Spinner, do hereby declare the nature of the said Invention for
“IMPROVEMENTS IN MULES FOR SPINNING," to be as follows:-
My Invention relates to mules for spinning, and is an improvement of
an Invention of mine, and patented November 23rd, 1864, in the names
of John Paley and Thomas Rawsthorne, No. 2922. In that Invention a
positive motion was obtained for the cam shaft in self-acting spinning
mules.
In my present Invention I use the band motion invented and patented
by me in 1864 in all its entirety, but I add a certain, simple, and
effectual method of removing the strap or band from fast to loose pully,

page_text: and vice versa the moment it is required. This in my former arrange-
ment was uncertain, and caused great wear and destruction to bands and
waste of power.
In my present Invention I use the same fast and loose pully as in
my former Patent, and in a convenient position near I fix an
lever, with a slot groove at one end and a ballance weight at the other, of
sufficient weight that by such weight the leverage on the other end will
be sufficient to draw the band from fast to loose pully. Through the
slot at the other end of this lever a rod and pivot are passed; this rod
goes alongside the headstock frame from back to front of traverse. On
the outer end of this rod is a finger tappet, regulated in or out by a set
screw on such rod. Against this tappet finger strikes the outer faller
rod; on the outer end or near is another set screw tappet, which is
lifted by a cam finger fixed on the twist shaft. When the head comes
in the inner faller rod strikes under the other end of aforesaid lever, and
throws the band again from loose to fast pully. There is a finger
working in the slot of cam, the other end of which is secured to the
aforesaid rod, the object of which is to hold up the rod during the
time the band is on the fast pully, but imediatly the carriage begins
to move in or out down goes this finger and rod, and off comes the band
through and by a fork attached to slot end of lever. By the
above arrangement I can obtain three, or, if required, four changes from
fast to loose pully during one journey of the mule in and out.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Rawsthorne in the Great Seal Patent a
Office on the 23rd March 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
RAWSTHORNE, of Preston, in the County of Lancaster, Cotton Spinner,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 3
Letters Patent, bearing date the Twenty-third day of September, in the
year of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give

page_text: and grant unto me, the said Thomas Rawsthorne, Her special licence
that I, the said Thomas Rawsthorne, my executors, administrators, and
assigns, or such others as I, the said Thomas Rawsthorne, 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
MOLES FOR SPINNING," upon the condition (amongst others) that I, the
said Thomas Rawsthorne, my executors or administrators, by an instru-
ment in writing under mine, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Inven-
tion, 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 Thomas Rawsthorne, do hereby
declare the nature of my said Invention, and in what manner the.
same is to be performed, to be particularly described and ascertained
in and by the following statement :---
This Invention relates to and is an improvement of an Invention
made by me and patented November 23rd, 1864, in my name coupled
with that of John Paley, and numbered 2922. In that I obtained a
positive motion to the cam shaft of self-acting spinning mules by a
separate and distinct band working from counter or other shaft to fast
and loose pullies on cam shaft. The method of moving the band in that
Invention was very imperfect and uncertain, it consequently caused
great wear of bands and waste of power.
My present Invention is designed specially to overcome that evil, and
by which I can obtain three, or, if required, four changes from fast to
loose pullies during one journey of the mule in and out, whereas my
former Invention only made one change in and out.
I annex hereto a Sheet of Drawings; in the several Figures similar
parts are marked by corresponding letters of reference.
Fig. 1 is a side elevation of the mule headstock shewing my
Invention; Fig. 2, end view shewing cam shaft, pullies, and counter-
shaft and pulley for driving, and the way I connect the same; Fig. 3 is
another way in which I work my Invention.

page_text: "
The twist
In Fig. 1 "A" is mule headstock; "B" a "L" shaped lever, fulcrumed
on the headstock by screw "Y;" at the end of such lever is a ballance
weight "Z," which has on its upper side a projection "A 1," which
carrys top end of angle slide lifting piece "I." "J, J," are faller rods
in carriage; "C" is cam shaft; "D," fast pulley on same;
66 E," loose
pulley with strap shewn on it; "F," strap fork; "C," a set tappet boss,
with projection "a," which fits into slot "6" in wheel "P" on twist
shaft “d,” on which shaft are two fingers "H, H," which alternately
strike bar "L," which is connected to strap fork "F."
shaft "d" is driven by screw "O" and screw wheel "V,
as usual.
The action by this method is, when the mule arrives out at its stretch
the twist shaft by its action brings one of fingers "H" in contact with
the bar "L" connected to strap fork "F," and instantly removes the
strap "F1" from loose to fast pulley, thus performing one change, and
again by the second finger "H" another change is made. It will be
observed that immediately such fingers have passed bar "L" the ballance
weight at the inner end on "L" lever "B" falling draws the band from
fast to loose pulley "E," and when the carriage comes in the inner faller
rod "J" strike the angle slide lifting piece "I," thus giving a third
change. The tappet boss " G" by the small tappet "a" drops into the
slot in wheel "P," holding it there while a change is made.
tr
Fig. 3 shews another method of working "L" lever "B" by rod "R,"
the end at "S1" being connected to lever "B" at "T1." The carriage
when it comes out the outer faller rods "J" strike the pendulum
lever "S," which by pivot pin "w" draws the rod "R" along until the
pivot "X "has traversed down incline in the end of rod "R" to "01,"
when the first change is made; then by the sliping of pivot “w
shoulder "01" and its carriage onward a second change is made. The
inner changes can be so regulated as to suit all requirements, and they
are instant and positive.
tr
"
into
Having thus described my Invention and several ways of applying it,
I may say in conclusion that I do not confine myself to the precise
details I have had occasion to describe and illustrate, as I know I shall
be compelled to deviate to suit the different makes of mules; but what
I claim as novel and substantially mine, and secured to me herein is,—
First. A method of bringing the strap from loose to fast pulley twice
while the mule is at full stretch out, and thus making two changes.

page_text: Second. That when the mule goes in the faller rod striking against
bevil lifting piece "I" immediately changes from loose to fast pulley,
and going back while the mule is in, giving way when the mule comes
back, allowing the faller rods to pass freely without change.
Third. The lever "B," lifting piece "I," fingers “H, H,” with the
bar "L," substantially as herein described and illustrated.
Fourth. The arrangement in Figure "3," substantially as herein
described and illustrated.
Fifth, and last. The general arrangements of the several parts herein
described for the purpose of making the changes instant as required, as
herein described and illustrated.
In witness whereof, I, the said Thomas Rawsthorne, have hereunto
set my hand and seal, this First day of March, in the year of
our Lord One thousand eight hundred and seventy-one.
THOMAS RAWSTHORNE. (L.S.)
Witness,
JOHN LEWIS,
Engineer and Patent Agent,
Preston.