CERTAIN IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING."
Year: 1877

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."
PROVISIONAL SPECIFICATION left by the said Thomas Brookes at the Office
of the Commissioners of Patents on the 17th November 1877.
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 doubling and spinning 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 partially raising the bobbins or spools by means of
a plate, in which are slots or holes, which plate passes under the bobbins or spools,
and is raised by means of levers actuated by the attendant; by this means all the
bobbins or spools of the frame, or any required number of them, are partially
raised simultaneously, and they are then loose on the spindles, and ready to be
removed by hand.

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 16th May
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 doubling and spinning 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 a plate,
in which are slots or holes, which plate passes under the bobbins or spools, and is
raised by levers actuated by the attendant or otherwise; by this means all the
bobbins or spools of the frame, or any required number of them, are raised
simultaneously, and they are then loose on the spindles, and ready to be
removed.
And in order that my Invention may be fully understood and readily carried
into operation, I will proceed to describe the accompanying Sheet of Drawings,
reference being had to the figures and letters marked thereon.
Fig. 1 is an elevation of part of an ordinary ring and traveller throstle spinning
and doubling frame, to which my improvements are applied; and Fig. 2 is a plan
of my improved machinery.
In Fig. 1a is part of the framing of the machine; b, the roller beam; 61, the
thread guides; c, the front drawing roller; d, the spindle, supported in the bush e,
fixed to the bolster rail f; g is the ring rail; h, the bobbin or spool; and h¹, the
doffing braid; all these parts are made as usual.
i is a shaft, extending the whole length of the frame, and supported in fixed
bearings; on this shaft are fixed the levers or "pokers" j, on which fit the forked
ends of the guide pieces k, to which the doffing plate 7 is secured. In the doffing
plate are as many slots l' as there are spindles in the side of the frame, and the
slots are sufficiently wide to pass freely on each side of the doffing braids h', but
they are not large enough to pass over the end of the bobbin or spool, consequently
when the plate 7 rises, it carries the bobbins or spools with it. At the end of the
shaft i is a handle, which fits into retaining notches in a plate fixed to the end
frame;
these notches hold the pokers j in either of the positions shewn by the full
lines and the dotted lines in Fig. 1.
When the yarn is being wound on the bobbins or spools, the pokers ; and the
doffing plate are in the positions shewn in dotted lines in Fig. 1, and they remain
in this position until the bobbins or spools are full, or ready to be doffed; the ring
rail g is then lowered by the usual mechanisin into the position, shewn in dotted
lines, to wind a few coils of yarn on the doffing braids h'; the doffing plate is then
thrown forward by the attendant acting on the handle at the end of the shaft i, to
bring the doffing plate under the ends of the bobbins h, but over the rings in the
ring rail g; the ring rail is then raised by the ordinary building motion or other-
wise from the position shewn in dotted lines to that shewn in full lines, the
doffing plate and the full bobbins being carried with it, but the braids remaining
down, being held in position by a spring clip as usual; by this means the bobbins
are loosened and quite free on the spindles, and the yarns or threads are all broken
at the same time. The full bobbins can now be removed and empty ones put on
the spindles, the doffing plate is then thrown back from underneath the bobbins,
thereby allowing them to drop on to the spindles. The ring rail is then placed in
position for starting a new set of bobbins. By this means the operation of doffing

page_text: is greatly facilitated as all or any number of the bobbins or spools are released from
the spindles automatically, and the labour of the attendants is greatly reduced, while
the straining of the spindles is avoided.
Having thus stated the nature of my Invention, and described a convenient mode
of performing the same, I wish it to be understood that I do not intend to limit
myself to the details given, and that I claim, the slotted plate or its equivalent,
acting in the manner and for the purpose described.
In witness whereof, I, the said Thomas Brookes, have hereunto set my hand
and seal, this Fifteenth day of May, One thousand eight hundred and
seventy-eight.
T. BROOKES. (L.S.)