CERTAIN IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING
Year: 1878

page_text: LETTERS PATENT to Thomas Brookes, of Manchester, in the County of Lan-
caster, Engineer, for the Invention of "CERTAIN IMPROVEMENTS IN MACHINERY
FOR SPINNING AND DOUBLING."
Sealed the 4th April 1879, and dated the 15th October 1878.
PROVISIONAL SPECIFICATION left by the said Thomas Brookes at the Office
of the Commissioners of Patents on the 15th October 1878.
THOMAS BROOKES, of Manchester, in the County of Lancaster, Engineer. "CERTAIN
IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING."
My Invention consists in an improved combination of machinery for facilitating
the doffing of the bobbins or spools when full, and it is particularly applicable to
those machines known as the ring and traveller spinning and doubling frames, in
which the bobbins or spools are turned round by the friction of the spindles. In
these frames considerable power is required to raise the bobbins or spools on the
spindles previous to doffing them, and this not only necessitates a loss of time, but
frequently is the cause of straining the spindles. Now my Invention consists in
raising the bobbins or spools by means of plates or rails in which are holes fitting
over the bolsters; these plates or rails are brought in contact with the under side of
the bobbins or spools by levers having bosses with inclined grooves acting on keys
in the holes in the plates or rails. The levers are moved sideways by rails or rods
in front of the spindles. Projections on the rails or rods act on the levers, and a
longitudinal motion is given to the rails or rods by chains passing around a cross
shaft at the end of the frame, or by levers or other equivalents. When the bobbins
or spools are full the rails or rods are moved endwise; the inclined grooves in the
levers then acting on the keys in the plates or rails cause them to rise, thereby
raising simultaneously all the bobbins or spools.
Another part of my Invention consists in an improved mode of breaking the yarn
when the full bobbin or spool has been taken off the spindle, and for holding the
end that is connected to the roller, whereby the connection between the roller and

page_text: the traveller is not broken. Above and near to the bolster bearing is a spring clip
fitting on the spindle, which clip is provided with one or more prongs or catches.
As soon as the full bobbin or spool has been taken off the spindle, the attendant
presses the yarn between the spindle and the prong or catch on the clip, which not
only breaks the yarn, but binds the yarn to the spindle, as described. When empty
bobbins or spools have been put on the spindles the frame is ready to start, and very
little or no waste is made. The prongs or catches may be made to bind the yarn
against the spindle, or to hold the end underneath the prongs or catches when bent
downwards.
Or, instead of the spring clip above referred, a bush with one or more catches or
prongs may be used.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Brookes in the Great Seal Patent Office on the 12th April
1879.
THOMAS BROOKES, of Manchester, in the County of Lancaster, Engineer. "CERTAIN
IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING."
In the machines for spinning and doubling known as the ring and traveller
spinning and doubling frames, in which the bobbins or spools are turned round by
the friction of the spindles, considerable power is required to raise the bobbins or
spools on the spindles previous to doffing them, and this not only necessitates a loss
of time, but frequently causes the spindles to be strained.
My Invention consists, first, in an improved combination of machinery for par-
tially raising the bobbins or spools to set them free on the spindles; and, secondly,
in an improved mode of breaking the yarn when the full bobbin or spool has been
taken off the spindle, and for holding the end that is connected to the roller, whereby
the connection between the roller and the traveller is not broken.
And in order that my Invention may be fully understood I will proceed to
describe the accompanying Sheet of Drawings, in which Fig. 1 is an elevation partly
in section of part of a ring and traveller throstle spinning and doubling frame to
which my improvements are applied; Fig. 2 is another elevation, and Fig. 3 a front
view of the same; Fig. 4 is a plan of part of the same. a is the ring rail; b, the
bolster rail; c, the spindle, which revolves in a footstep and bearing in the tube d,
fixed in the bolster rail; e is the bobbin or spool fitting on the spindle, and secured
to it by friction. These parts are made as usual.
My improved machinery for partially raising the bobbins or spools on the spindles
consists of the lifting plate f, at the under side of which are bosses with holes fitting
over the bolster tubes d; these plates are brought in contact with the under sides
of the bobbins or spools e by means of the levers g, which are hinged on some of the
bolster tubes. The bosses of the levers g have inclined grooves which act on keys
in the holes of the lifting plates, as shewn in Fig. 4. The levers g enter into notches
in the longitudinal flat rod h, which is supported in brackets fixed to the bolster
rail b, and a longitudinal motion is given to the flat rods h by the chains i, sec
Fig. 3, which are attached to the pulleys j¹ on the cross shaft j, supported in bearings
at each end of the frame; this shaft is turned partly round when required by a
handle fixed to the square end, shewn in Fig. 1.
My improved machinery for breaking the yarn when the bobbin is full, and for
holding the broken end, consists of the spring clip k, shewn best in Fig. 2; this clip
fits on the spindle near to and above the bolster bearing, and it is provided with
one or more prongs or catches. The prongs or catches may be made to bind the
yarn against the spindle. The mode of operation is as follows:-When the bobbins
or spools are full and ready to be doffed, the ring rail a is lowered to the position
shewn in Fig. 2; a few coils of yarn are then allowed to be wrapped on the bottom
of the bobbin or spool before the frame is stopped; then the attendant by means of
the shaft winds the chain i partly on the pulley j', thereby moving the longitu
dinal flat rod h endwise, by which means the levers g are turned partly round on
their axes.
The inclines on the bosses of the levers 7 acting on the keys iu
the bosses of the lifting plates raise the lifting plates f until they come in contact
with the bottom of the bobbins or spools and partially raise them, thereby making
the bobbins or spools quite free on the spindles.
After this operation the attendant takes the full bobbins or spools off the spindles,
and at the same time passes the yarn into the sinall steel clip on the spindle, by
which means the ends of the yarn are held when broken; the empty bobbins are
then put on the spindles, and the frame is ready for starting.
Thus it will be seen that the yarn is never disconnected between the rollers and
spindles during the operation of doffing.

page_text: Having thus stated the nature of my Invention, and described the manner of per-
forming the same, I wish it to be understood that I do not intend to limit myself to
the details given, and that I claim as my Invention,-
First. The improved machinery, shewn and described, for partially lifting the
bobbins or spools to make them free on the spindles; and
Secondly. The spring clip k or any equivalent instrument for breaking the yarn
and holding the end, as shewn and described.
In witness whereof, I, the said Thomas Brookes, have hereunto set my hand
and seal, this Tenth day of April, One thousand eight hundred and seventy-
nine.
T. BROOKES. (L.S.)