IMPROVEMENTS IN 'THROSTLES" AND DOUBLING FRAMES FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS
Year: 1856

page_text: caster, Manufacturer, for the Invention of "IMPROVEMENTS IN 'THROSTLES"
AND DOUBLING FRAMES FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS
MATERIALS."
Sealed the 16th January 1857, and dated the 16th July 1856.
PROVISIONAL SPECIFICATION left by the said David Bowlas at the
Office of the Commissioners of Patents, with his Petition, on the 16th July
1856.
I, DAVID BOWLAS, of Reddish, in the County of Lancaster, Manufacturer,
do hereby declare the nature of my said Invention for "IMPROVEMENTS IN
THROSTLES' AND DOUBLING FRAMES FOR SPINNING AND DOUBLING COTTON AND OTHER
FIBROUS MATERIALS," to be as follows:-
My Invention relates to well-known machines called "throstles" and
"doubling frames," and particularly to those parts of such machines called the
spindle and flyer," and consists in the particular arrangement, construction,
and use of such parts, the novelty and improvement of which being entirely
dependent upon their peculiar combination. I employ a spindle which is not
driven as in ordinary machines, nor is it fixed or stationary, as in some well-
known machines,) the lower end of which is somewhat stouter or thicker than
the upper portion. The lower end of the spindle is supported-in-a-step-piece-in-
the copping or lifting rail; the upper part of the spindle is provided with a

page_text: "braid" or plate upon which the bobbin is placed, and with which it runs as
required by means of the rotation of the bobbin upon the spindle and its
disc. The flyer is of the "inverted" form, that is, having its arms extending
upwards, and which may either be furnished with eyes or crooks for the passage
of the thread, or provided with a light ring for the same purpose. The flyer
is mounted at the upper end of a tube surrounding and supporting the spindle,
and of about one-third its length, and is driven by means of a whirl or pulley
cast or fixed upon it, and revolves in boulster or guide rails above and below
the driving whirl. The lower end of the spindle is provided with a "drag
band" passed around it, in order to equalize the drag or pull as required.
This improved arrangement of spindle and flyer will be found to be most
important in "doubling" yards or threads, as they may be run at a greatly
increased speed, and the "drag" will be more regular and steady with the use
of only about one-third of the power required for driving, and also affording
an increased facility in "doffing or removing the full bobbins of yarn when
required.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said David Bowlas in the Great Seal Patent Office on the
16th January 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DAVID
BOWLAS, of Reddish, in the County of Lancaster, Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixteenth day of July, One thousand eight hundred
and fifty-six, in the twentieth year of Her reign, did, for Herself, Her
heirs and successors, give and grant unto me, the said David Bowlas, Her
especial license that I, the said David Bowlas, my executors administrators;
and assigns, or such others as I, the said David Bowlas, my executors,
administrators, and assigns, shall at any time agree with, and no others,
from time to time and at all times thereafter during the term therein ex-
pressed, 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 MACHINERY OR APPARATUS
FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS," upon the
condition, amongst others, that I, the said David Bowlas, 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.

page_text: 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, tho said David Bowlas, do hereby declare the
nature of my said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
and accompanying Drawings, that is to say:-
:
My Invention relates to well-known machines called throstles and doubling
frames, and particularly to those parts of such machines called the spindle and
flyer, and consists in the particular-arrangement, construction, and use of such
parts, the novelty and improvement of which being entirely dependent upon:
their peculiar combination. I employ a spindle (which is not driven as in
ordinary machines, nor is it fixed and stationary, as in some well-known
machines), the lower end of which is somewhat stouter or thicker than the
upper portion. The lower end of the spindle is supported in a step piece in the:
copping or lifting rail; the upper part of the spindle is provided with a
"braid" or plate, upon which the bobbin is placed, and with which it runs as
required by means of the rotation of the bobbin upon the spindle and its disc.
The flyer is of the inverted form, that is, having its arms extending upwards,
and which may either be furnished with eyes or crooks for the passage of the
thread, or provided with a light ring for the same purpose. The flyer is
mounted at the upper end of a tube surrounding and supporting the spindle,-
and of about one-third its length, and is driven by means of a "whirl" or
pulley cast or fixed upon it, and revolves in boulster or guide rails above and
below the driving "whirl" the lower end of the spindle is provided with a
"drag band" passed around it, in order to equalize the drag or pull as required.
This improved arrangement of spindle and flyer will be found to be most im-
portant in doubling yarns or threads, as they may run at a greatly increased
speed, and the drag will be more regular and steady with the use of only about
one-third of the power required for driving, and also affording an increased
facility in "doffing" or removing the full bobbins of yarn when required.
In order that this Invention may be better understood I have hereunto
attached a Sheet of Drawings made about full size, having similar letters of
reference marked upon corresponding parts of the examples illustrated.
Fig. 1 is an elevation of the improved spindle and flyer, shewing the
situation of the disc or plate for supporting the bobbin and steadying rails
above and below the pulley secured to the flyer and also the copping rail and
wharve, by means of which a drag is-imparted to the spindle. Fig. 2 is a
sectional elevation of the same, shewing the boulster or bush to which the flyer

page_text: and pulley is attached, and the ring carrying the points or pegs as a substitute
for the eyes upon the flyer. In Fig. 1, a, a, is the spindle, which is not driven
as in ordinary machines, but receives motion from the pull or tension of the
yarn upon the bobbin, the lower end of the spindle being supported in the
copping rail b; c, c, are the two steadying rails above and below the pulley d,
which is attached to and drives the flyer e. The "drag" cord or band fis
placed either in the form of an endless band alternately before and behind the
wharves in a row or set of spindles at the lower end of the spindle, or each
spindle may have a separate band, the "drag" upon such spindles and bobbins
being regulated or governed according to the greater or lesser tension of the
said drag band. The plate or disc h, upon which the bobbin is placed, is fur-
nished with a number of slots or holes for the reception of a projecting pin or
studi upon the lower end of the bobbin, so as to cause the bobbin to revolve
with the spindle at a speed regulated by the "drag" cord f. k is the light ring,
supported near the top of the flyer, sustaining the bearing points for the thread,
substituted instead of eyes upon the flyer arms.
In witness whereof, I, the said David Bowlas, have hereunto set my
hand and seal, this Fourteenth day of January, in the year of our Lord
One thousand eight hundred and fifty-seven.
DAVID BOWLAS. (L.S.)