IMPROVEMENTS IN MULES FOR. SPINNING AND DOUBLING
Year: 1865

page_text: LETTERS PATENT to John Dodd, of Oldham, in the County of Lancaster,
Mechanical Engineer, for, the Invention of "IMPROVEMENTS IN MULES FOR.
SPINNING AND DOUBLING."
Sealed the 6th March 1866; and dated the 13th September 1865.
PROVISIONAL SPECIFICATION left by the said John Dodd at the Office
of the Commissioners, of Patents, with his Petition, on the 13th
September 1865.
.J
I, JOHN DODD, of. Oldham, in the County of Lancaster; Mechanical
Engineer, do hereby declare the nature of the said Invention for IMPROVE-
MENTS IN MULES FOR SPINNING AND DOUBLING," to be as follows:
My Invention relates to a method of effecting the necessary intermittent
motion of the "cam shaft" of mules, and is an 'improvement upon that
arrangement for which Letters Patent were granted to me bearing.date 21st
October 1863, No. 2590. According to the Specification of that Patent I
used an incline and stop. capable of turning upon a centre, for separating the
two portions of the clutch box or friction cones, by which the cam shaft is
driven. In that case the centre upon which the said incline and stop turned
was fixed, and they were drawn back after having been moved outward by the
force of a spring. I now propose to make the said centre itself moveable;
and to draw back the incline and stop by a positive motion. In the arrange-
ment I employ for effecting this the lever which carries the incline and stop
is mounted upon a sliding bolt, connected at its
cam shaft." After the usual motion of the
other end to a cam upon the
sliding rod or other part.has

page_text: turned the above-mentioned lever so as to have moved the incline and
allowed the cam shaft to revolve the rotation of the aforesaid cam will,
by shifting the fulcrum of the lever restore the incline and stop to their
former position. In this arrangement the sliding fulcrum of the lever
and the connection thereof with the sliding rod act alternately as centres of
motion.
SPECIFICATION in pursuance of the conditions of the Letters-Patent, filed
by the said John Dodd in the -Great Seal Patent Office on the 13th
March 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
DODD, of Oldham, in the. County, of Lancaster,. Mechanical Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of September, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Dodd, Her special license that I, the said John Dodd, my
executors, administrators, and assigns, or such others as I, the said John
time agree
Dodd, my executors, administrators, and assigns, should at any
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 MULES FOR
SPINNING AND-DOUBLING," upon the, condition, amongst others, that I, the said
John Dodd, by an instrument in writing under my hand and seal, should
particularly describe and ascertain the 'nature of the. said Invention, 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.
3
NOW KNOW YE, that I, the said Jolin Dodd, do hereby declare the nature
of my said Invention, and in what manner the same is to be-perfornied, to
be particularly described and ascertained-in' and by the following statement
and accompanying Drawings, that is to say:-
4
My Invention relates to a method of effecting the necessary intermittent
motion of the "cam shaft" of mules, and is an improvement upon that
arrangement for which Letters Patent were granted to me, bearing date
Twenty-first October One thousand eight hundred and sixty-three, Number

page_text: 2590. According to the Specification of that Patent I used an incline and
stop, capable of turning upon a centre for separating the two portions of the
clutch box or the friction cones by which the cam shaft is driven. In that
case the centre upon which the said incline and stop turned was fixed, and
they were drawn back after having been moved outward by the force of a spring.
I now propose to make the said centre itself moveable and to draw back the
incline and stop by a positive motion. In the arrangement I employ for
effecting this the lever which carries the incline and stop is mounted upon a
sliding bolt connected at its other end to a cam upon the cam shaft.
After the usual motion of the sliding rod or other part has turned the above-
mentioned lever so as to have moved the incline, and allowed the cam shaft to
revolve, the rotation of the aforesaid cam will by shifting the fulcrum of the
lever restore the incline and stop to their former positions. In this arrange-
iment the sliding fulcrum of the lever and the connexion thereof with the
sliding rod act alternately as centres of motion.
Fig. 1 is an end view of the apparatus; Fig. 2 a plan view or section, and
Fig. 3 a longitudinal view of part of the framework of the mule and the
carriage, the arrangement being similar in general character to that for which
a Patent as aforesaid was granted to me, dated Twenty-first October, One
thousand eight hundred and sixty-three, Number 2590.
The cam shaft is shewn at a driven by the upright shaft b, through the
medium of usual friction cones c, d, the former constantly running with the
shaft b, while the latter is loose thereon and carries a bevil pinion e, gearing
into a wheel f, mounted upon the cam shaft. The cone c has a tendency to
be forced into contact with the cone'd by the spring g, but is prevented at
certain times by the sliding pin h which is carried by and revolves with the
cone d.
It is the apparatus which acts upon this pin to which my Intention
refers, and which I will now describe. Around the shaft b is a boss k, carried
by a fixing *, and having an incline upon its face leading to a separate
incline l, formed upon a lever m, and provided at its end with a stop n. The
lever m turns upon a centre o, and so far the arrangement is the same as that
described under my former Patent aforesaid. In this instance, however, the
centre pin o is carried by a rod p, mounted so as to be capable of sliding in a
guide 9. s
The rod p at one end is provided with a groove within which is
situate a cam r formed upon the periphery of the wheel f. The lever mis
prolongued beyond the centre o, and is at its end connected to a rod s,
mounted so as to be capable of sliding in guides earried by the framework of
the mule. According to the positions of the parts shewn in the Drawing, the
pin h is at the top of the incline 1, is therefore thrust upward, and by acting

page_text: +
against the cone c has separated it from the cone d, which is not therefore
driven, and the cam shaft is at rest.. The carriage now running in the
direction of the arrow will bring a roller t in contact with the inclined end of
the bell-crank lever u, and this lever being thus caused to turn upon its
centre will cause the rods to slide in the direction of the
arrow, Fig. 2,
and thus the lever m will turn upon its centre o carrying with it the stop n in
tbe direction of the arrow thereon. This movement will also carry the incline l
from under the pin 'h, which being no longer supported thereby will be allowed
to pass. downward-and-permit the-spring g to force the cone cinto contact
with the other cone d, and thus., the cam shaft will be caused to revolve, and
the required change will be effected. This rotation of_the_cam shaft will
cause the cam to travel in the groove of the rod p, whereby the said rod p
will be thrust outward in the direction of the arrow, carrying with it the centre
of the motion o of the lever m, the end of the said lever and stop n will there-
fore turn upon the rod s as a fulcrum; and will be returned to the position
shewn in, the Drawing, during which operation the pin h will run up the
incline to the stop n, thus lifting the cone c from gear with the other cone d
and arresting the motion of the cam shaft. For another change the carriage
now running in the other direction may arrive against a stop w and draw the
rods forward so as to turn the lever m, incline 1, and stop n in a direction
opposite to that of the arrow on the said stop, and the pin h will again pass
downward with the like results, after. which the camr by completing its
revolution will draw the rod p and centre of motion o back again to the
position shewn in the Drawing, when the end of the rod s. again acting as a
fulcrum for the lever m will cause that lever.to restore the incline and stop n
to the position.shewn, the cones being again thrown out of gear by the
pin h running up the incline l.
Having thus described the nature of my said Invention, and the manner
of carrying the same into effect, I desire it to be understood that I claim as
:secured to me under the above in part recited Letters Patent, the use of a
moveable centre of motion as illustrated at o.
In witness whereof I, the said .Jolin Dodd, have hereunto set my hand
and seal, this Twelfth day-of-March; in-the-year of our Lord One
thousand eight hundred and sixty-six..
JOHN DODD. (L.S.)