IMPROVEMENTS IN APPARATUS FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS SUBSTANCES."
Year: 1880

page_text: LETTERS PATENT to Charles Edward Thompson, of Harpurhey, near
Manchester, in the County of Lancaster, for an Invention of "IMPROVEMENTS
IN APPARATUS FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS
SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said Charles Edward Thompson
at the Office of the Commissioners of Patents on the 22nd November 1880.
"
CHARLES EDWARD THOMPSON, of Harpurhey, near Manchester, in the County of
Lancaster. IMPROVEMENTS IN APPARATUS FOR SPINNING AND DOUBLING
COTTON AND OTHER FIBROUS SUBSTANCES."
This Invention relates to that class of throstle and doubling frame, in which the
spindles revolve in fixed vertical tubes secured in the lifting rail, and upon each of
which fixed tubes is mounted a loose tube for carrying the bobbin, and consists in
the employment of a ring of metal inserted in an annular cavity between the two
tubes, a slight shoulder being formed inside the loose tube, and a similar shoulder
on the fixed tube to from bearings for the ring, the edges of which are feathered or
reduced to the smallest possible diameter.
In this manner I reduce the bearing surface of the loose tube, and bring it as
near as possible to the diameter of the spindle, and at the same time I diminish the
drag upon the bobbin (which rests upon a flange or conical surface formed upon
the lower end of the loose tube), and am thus enabled to spin and double finer
numbers than has hitherto been practicable upon the throstle and double frame.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Charles Edward Thompson in the Great Seal Patent Office on
the 21st May 1881.
"
CHARLES EDWARD THOMPSON, of Harpurhey, near Manchester, in the County of
Lancaster. IMPROVEMENTS IN APPARATUS FOR SPINNING AND DOUBLING.
COTTON AND OTHER FIBROUS SUBSTANCES."
This Invention relates to that class of throstle and doubling frames in which the
spindles revolve in fixed vertical tubes secured in the lifting rail, and upon each of
which fixed tubes is mounted a loose tube for carrying the bobbin, and consists in the
employment of a ring of metal inserted in an annular cavity between the two tubes, a
slight shoulder being formed inside the loose tube, and a similar shoulder on the
fixed tube to form bearings for the ring, the edges of which are feathered or reduced
to the smallest possible diameter. And in order that this my said Invention may
be the more readily understood and carried into practical effect, I have hereunto
annexed a Drawing illustrative of my improvements in apparatus for spinning and
doubling fibrous substances, and will now proceed to describe the same by reference
to the various figures and letters marked thereon.
Figs. 1 and 2 are exterior views (the latter shewing the bobbin in section) of
one set of the vertical tubes for carrying the bobbin used in throstle and doubling
frames, and constructed in accordance with my Invention; Fig. 3 represents a
sectional view of both the fixed and loose vertical tubes, shewing also the application
of my improved bearing ring, and Figs. 4 and 5 are respectively sectional views of
the fixed vertical tube and loose vertical tubes. In all the views A is the fixed vertical
tube arranged to be secured to the lifting rail in the ordinary manner, and B is the
loose tube mounted upon the outside of the fixed tube A and designed to carry the
bobbin C. Between these two tubes A and B an anular cavity D is formed, and
a shoulder E is also arranged inside the loose tube B, and a similar shoulder G on
the outside of the fixed tube A to form bearings for the ring H, the lower edge of
which ring is feathered or reduced in diameter (seen more clearly in detached
sectional view, Fig. 6), as illustrated. Instead of having the lower edge of this
ring only feathered, the upper edge of the same may be similarly treated.
It will thus be observed that this ring H forms the bearing surface of the loose
tube B which is suspended upon it, and that the bearing surface of such tube is
thus reduced and brought as near as possible to the diameter of the spindle. I also
diminish the drag upon the bobbin by mounting it upon a shoulder. I formed upon
the loose tube, and in some cases I form a groove J below this shoulder I, in which
I insert a rubber ring in order that when the bobbin shrinks it shall shrink on to
such rubber ring instead of on to the tube itself; the bobbin in this case being
bored slightly larger to allow for the insertion of the rubber ring. The loose ring K,
seen upon the outside of the fixed tube A, immediately above the shoulder L there
formed, is to increase the drag when required, and one or more (as indicated by the
dotted lines) of these rings may be used accordingly.
To prevent dirt getting in between the fixed and loose tubes, and also to prevent
the loose tube coming off when doffing, I prefer to employ a loose cap M, which is
secured in position upon the flange of the fixed tube A by means of the bayonet
joint o.
By reducing the bearing surface as aforesaid I am enabled to spin and double
fine numbers with my improved apparatus than has hitherto been practicable upon
the throstle and doubling frame.
Having thus particularly described and ascertained the nature of this my said
Invention, together with the best methods with which I am acquainted for carrying

page_text: the same into practical effect, I wish it to be distinctly understood that I make no
claim to the fixed and loose tubes nor to the bobbin hereinbefore described, nor do
I confine myself to the precise position of the bearing ring illustrated on the
accompanying Drawing, as the same may be considerably varied without
departing from the Invention, but what I do claim is,-
The employment of a loose ring inserted between the fixed and loose tubes
of throstle and doubling frames, substantially as and for the purposes hereinbefore
described and illustrated on the accompanying Drawing.
In witness whereof, I, the said Charles Edward Thompson, have hereunto set
my hand and seal, this Nineteenth day of May, in the year of our Lord
1881.
CHARLES EDWARD THOMPSON. (L.S.)