IMPROVEMENTS IN MULES POR SPINNING AND DOUBLING
Year: 1864

page_text: LETTERS PATENT to John Dodd, of Oldham, in the County of Lancaster,
Mechanical Engineer, for the Invention of "IMPROVEMENTS IN MULES
POR SPINNING AND DOUBLING."
Sealed the 23rd June 1865, and dated the 29th December. 1864.
PROVISIONAL SPECIFICATION left by the said John Dodd at the Office
of the Commissioners of Patents, with his Petition, on the 29th
December 1864.
I, JOHN DODD, of Oldham, in the County of Lancaster, Mechanical Engi-
neer, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN MULES FOR SPINNING AND DOUBLING," to be as follows:-
My Invention relates to a method of arresting the motion of the winding-on
drum during the latter part of the stretch, and through the same space on the
return motion of the carriage, when such suspension is required.
In order to accomplish this I cause the band, which is fixed at both ends,
and gives motion to the winding drum, to pass over two pullies mounted upon
a rocking lever. When the winding-on chain is intended to be coiled the lever
is held stationary, and the pullies thereon act as simple guide pullies; but
when the carriage arrives at that part of the stretch at which it is desired to
arrest the motion of the drum then the above-mentioned lever is released,
and allowed, together with the pullies, to turn upon a centre of motion, so
that the power of the band is neutralized, and the drum ceases to revolve. On
the return motion of the carriage the same effect takes place by the rollers
rocking in the opposite direction.

page_text: The above-mentioned rocking of the rollers I propose to effect by causing
the end of their lever to pass along an inclined slot, and the locking thereof.
When the drum is to revolve I secure by a catch, which is liberated by an
incline arriving in contact with a stud.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Dodd in the Great Seal Patent Office on the 29th
June 1865.
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 Twenty-ninth day of December, in the year of
our Lord One thousand eight hundred and sixty-four, in the twenty-eighth
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 Dodd, 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 "Im-
PROVEMENTS 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.
NOW KNOW YE, that I, the said John Dodd, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement and accompanying Drawings, that is to say :-
My Invention relates to a method of arresting the motion of the winding-on
drum during the latter part of the stretch, and through a similar space on the
return motion of the carriage when such suspension is required.
The method by which I put my Invention into practice is shewn at Figs. 1

page_text: and 2 of the accompanying Drawing, in which a represents a portion of the
mule carriage, and 6 the winding-on drum mounted upon the shaft c. At d is
the winding-on band passing over the drum 6, and made fast at both ends, as
usual. On its passage, however, to each end, it passes under rollers e, carried
by a lever f, which is mounted so as to turn loosely upon the shaft c of the
winding-on drum b. This leverf carries a roller g, the axis of which projects,
and at such projection is formed square, as at h. Resting upon this square
axis (according to the position shewn) is a lever i, mounted so as to turn upon
a centre k, carried by a bracket attached to the carriage. The lever i is shewn
detached at Fig. 3, together with the square axis h, the said square being
situate within a notch formed in the lever i, which lever is also provided with
an incline . At the outward end of the stretch is a standard m, fixed to the
floor, and carrying a plate n, within which is formed an angular slot o. The
said plate is also provided with a projecting stud p, shewn by dots in Fig. 1.
According to the positions of the parts shewn, the carriage is supposed to be
running out in the direction of the arrow, and the band d is giving motion to
the winding-on drum b, the lever f being prevented from turning upon its
centre c because it is held in a fixed position by the lever i, the notch g of
which forms an abutment for the squared axle h. A further travelling of the
carriage will bring the roller g against an inclined part n* on the plate n,
which will slightly lift the lever i from the square h, so as to relieve the pres-
sure, and then the incline upon the lever i comes into contact with the pro-
jecting stud p, by which means the said lever will be turned upward upon its
centre of motion k, so as to entirely liberate the square h, and render the
leverf capable of turning upon its centre c. This turning is, however, for the
moment prevented by the top of the plate n, upon which the roller 9 then
rests, which roller then glides along the top of the plate n until it arrives at
the inclined slot o, when the carriage still advancing, the roller ġ will pass
downward in the said inclined slot, thus causing the lever f to turn upon its
centre c, as shewn by the dotted lines. The moment this descent of the
roller 9, and consequent turning of the lever f, takes place, the guide rollers e
will cause the part of the winding-on band to unlap from the surface of the
drum b, while at the same time the part d' thereof will be lapped thereon, and
thus the action of the said band, which has heretofore imparted rotatory motion
to the drum b, is neutralized, and it will cease to revolve during the remainder
of the outward run of the carriage. The dotted position shews the roller g
down the inclined slot, but by the time the carriage has completed its stretch,
it may,
if desired, have advanced further therein or not so far. Upon the
return motion of the carriage commencing, the roller g will be drawn upward

page_text: in the slot o by the tension of the band turning the lever f, and the said lever f
thus turning backward upon its centre, that is, in the opposite direction to that
above described, will now unlap the part from the drum 6, while the part d'
thereof will be lapped thereon, and thus the action of the said band upon the
drum will still be neutralized. As soon as the roller g leaves the prolongued
end o* of the slot, the lever f arrives in contact with a stop z, by which means
the said lever will be prevented from turning further, and the notch q will be
at liberty to fall on to the square h as soon as the flat part of the lever i shall
have travelled onward and have brought the incline 2 on to the stud p, and
thus the parts will again be in the relative positions shewn by the full lines,
and the lever being no longer able to turn upon its centre c, will cause the
band d to act after the usual manner. The tail ends of the lever i is simply
to prevent the other end of the said lever from falling should the band d
accidentally break.
Having thus described and ascertained 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, and
for the purpose above set forth, the use of rocking or otherwise moveable
pullies in connexion with the winding-on band, as illustrated at e in the
Drawing.
In witness whereof, I, the said John Dodd, have hereunto set my
hand and seal, this Twenty-eighth day of June, in the year of our
Lord One thousand eight hundred and sixty-five.
JOHN DODD.
(L.S.)