IMPROVEMENTS IN MULES FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS
Year: 1879

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 COTTON AND OTHER FIBROUS MATERIALS."
PROVISIONAL SPECIFICATION left by the said John Dodd at the Office of
the Commissioners of Patents on the 7th January 1879.
JOHN DODD, of Oldham, in the County of Lancaster, Mechanical Engineer.
"IMPROVEMENTS IN MULES FOR SPINNING AND DOUBLING COTTON AND OTHER
FIBROUS MATERIALS."
My Invention refers to improvements upon that principle for which Letters
Patent were granted to me, dated May 30th, 1870, No. 1376. My said Invention
consisted in the use of a winding on drum with decreasing diameters, in combi-
nation with apparatus connected to the radial arm for removing lengths of chain
from the said winding on drum, the operation of removing the chain having been
effected by a lever handle which was turned by the attendant according to require-
ments, but now propose an arrangement by which the same result is obtained
automatically. To effect this I mount upon the axis of the ratchet wheel of my
former Invention a spiral drum, to which one end of a chain is attached, the other
end after passing over pullies being connected to what I will for the present
consider a fixed point. The pullies over which the chain passes are mounted upon
a lever turning upon a centre, which lever carries an arm turning in one direction
only, and having a bowle against which an incline on the radial arm may arrive
in contact on the return motion of the carriage so as to turn the aforesaid lever on
its centre, thus causing the chain to be unwound from the scroll so as to take up a
sufficient quantity of winding on chain. I have above assumed that the chain is
attached to a fixed point, but a special part of my Invention consists in connecting
it to apparatus against which the nut of the shaper screw or other part connected
therewith arrives at a certain time in contact with the attachment of the chain, and
thus moving it periodically gradually draws the said chain, thus causing the afore-
said lever to be brought into contact with the radial arm incline, which thus draws
a further length of chain from the scroll and winds a similar length of winding on
chain, and consequently causing the chain to be unwound from a portion of the
scroll part of the winding on drum, and so on.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Dodd in the Great Seal Patent Office on the 7th July 1879.
JOHN DODD, of Oldham, in the County of Lancaster, Mechanical Engineer.
"IMPROVEMENTS IN MULES FOR SPINNING AND DOUBLING COTTON AND OTHER
FIBROUS MATERIALS."
My Inventions refers to improvements upon that principle for which Letters
Patent were granted to me dated May Thirtieth, One thousand eight hundred and
seventy, No. 1376. My said Invention consisted in the use of a winding on drum
with decreasing diameters in combination with apparatus connected to the radial
arm for removing lengths of chain from the said winding on drum, the operation
of removing the chain having been effected by a lever handle which was turned by
the attendant according to requirements, but I now propose an arrangement by
which the same result is obtained automatically. Fig. 1 represents in side eleva-
tion, partly in section, so much of a mule as is necessary to explain my Invention,
and Figs. 2 and 3 other similar views with different positions of the parts to be
hereafter referred to. In Fig. 1 the parts connected to the nut of the radial arm
are shewn in two positions, one being represented by dotted and the other by full
lines, and for the present I refer to the latter. At a is the ratchet wheel of my
former arrangement aforesaid, carried by the slide b, which is traversed by the usual
screw, and at c is the winding on chain, and at d the drum of decreasing diameter
described under my former Patent aforesaid. Fast with the ratchet wheel a is a
scroll shewn detached in two views, Fig. 1, to the end of which is attached a
chain, which after traversing the said scroll (according to the position shewn by
the full lines) passes over a pulley g, and from thence over two other pullies h, i,
carried by a lover which is capable of turning upon a centre at h, and the end of
the said chain is then made fast to the carriage l, which is traversed by the ordinary
shaper screw m, such carriage being prevented for the time from moving backwards.
Upon one of the arms of the quadrant is a tappet n which arrives in contact as the
quadrant moves downward, with an arm o mounted on the lever k in such manner
that it can turn upward but not downward. According to the positions of the
parts as shown by the full lines the quadrant nut is in the situation for building
the base of the cop, but as the said nut advances upward it takes up the slack of
tho chain fand then draws the said chain forward, by which means the lever k is
turned upon its centre h so as to bring the arm o within range of the tappet n,
and the said lever being then turned back by the said tappet, unwinds the chain f
from the scroll c, and causes the ratchet wheel a to turn upon its centre and wind
up a portion of the winding on chain as in my former Invention, and this goes on
until the nut is in the dotted position. When the cop bottom has been formed and
nosing begins the nut of the shaper screw m carries forward the lower point of
attachment of the chain f, by which means the lever is caused to turn upon its
centre and bring the arm o within range of the tappet n, which tappet on the
descent of the quadrant will cause the lever le to turn backward on its centre as
before and drag a length of chain from the scroll e, thereby causing it and conse-
quently the ratchet wheel a to turn a portion of a revolution so as to take up a
length of winding on chain, as explained under my former Patent aforesaid.
the quadrant rises the tappet n passes the arm o by turning it upward, and then
the operation continues, the shaper screw gradually advancing the point of attach-
ment of the chain f and bringing the arm o within range of the tappet . Fig. 2
represents the positions of the parts when the cop bottom is formed, and Fig. 3
when the cop is completed. Having thus described and ascertained the nature of
my said Invention, and the manner in which the same is to be performed, I desire
As

page_text: 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 the chain f and parts
connected therewith, acting substantially as described.
In witness whereof, J, the said John Dodd, have hereunto set my hand and
seal, this Fifth day of July, in the year of our Lord One thousand eight
hundred and seventy nine.
JOHN DODD. (LS.)