IMPROVEMENT IN SPINNING AND TWISTING FRAMES
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by the said John Erskine at the Office
of the Commissioners of Patents on the 19th April 1881.
JOHN ERSKINE, of Strabane, in the County of Tyrone, Ireland.
IMPROVEMENT IN SPINNING AND TWISTING FRAMES."
" AN
My said Invention is designed to effect a simple and convenient improvement
in spinning and twisting frames, whereby the ends of broken threads are caught
up and prevented from becoming entangled with adjacent ends, and also whereby
the centrifugal action of the thread is controlled, thus necessitating less drag on
the bobbin.
For this purpose I arrange a piece of metal or other suitable material, which
for convenience I call a "centrifugal guard," underneath the threadplate and above
each bobbin (or spindle). The centrifugal guard is conical or cylindrical in form,
or may be ring shaped with projecting points (but the cylindrical form is.
preferable), and is provided with a suitable slot or opening to allow the thread.
to be conveniently inserted. It is also provided with a tongue or point which
projects downwards, and serves to control the broken thread within the radius of
adjacent or neighboring spindles (or threads).

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Erskine in the Great Seal Patent Office on the 18th October
1881.
JOHN ERSKINE, of Strabane, in the County of Tyrone, Ireland. "AN
IMPROVEMENT IN SPINNING AND TWISTING FRAMES."
My said Invention is designed to effect a simple and convenient improvement
in spinning and twisting frames, whereby the ends of broken threads are caught
up and prevented from becoming entangled with adjacent ends, and also whereby
the centrifugal action of the thread is controlled, thus necessitating less drag on
the bobbin.
For this purpose I arrange a piece of metal or other suitable material, which for
convenience I call a centrifugal guard," underneath the thread plate and above
each bobbin (or spindle). The contrifugal guard is conical or cylindrical in form,
or may be ring-shaped with projecting points (but the cylindrical form is
preferable), and is provided with a suitable slot or opening to allow the thread
to be conveniently inserted. It is also provided with a tongue or point which
projects downwards and serves to control the broken thread within the radius of
adjacent or neighboring spindles (or threads).
In order that my said Invention may be more clearly understood and readily
applied in practice, I will describe the accompanying Drawings. Fig. 1 represents
a view of the thread-plate and spindle, showing the application of the centrifugal
guard A to the underneath surface of the thread-plate; Fig. 2 shows how the
guards are secured to the thread plate. a, a, is a continuous length of plate or
bar provided with transverse slots c, c, for the purpose of facilitating the setting
of the guards directly above the spindles. The plates or bars are fastened to the
thread-plate by screws d, d; Fig. 3 is an elevation of the centrifugal guard, per se,
as seen in position in Fig. 1.
Instead of this cylindrical-shaped guard I may use one of a ring pattern, as
shown in Fig. 4. A slit or opening is formed in the guard at f for the purpose of
passing the thread (g, g, Fig. 1,) through same.
In Fig. 1 the thread-plate is shown in dotted lines lifted up to facilitate the
removal of the bobbins from the spindles.
Having thus described the nature of my said Invention, and the manner of
applying the same in practice, I would have it understood that what I consider
new and original, and therefore claim as the Invention to be secured to me by the
herein before in part recited Letters Patent is,--
The application and use of a guard, called for convenience a "centrifugal guard,"
in connection with spinning frames, in the manner and for the purpose substantially
as herein described and set forth.
In witness whereof, I, the said John Erskine, have hereunto this my
Specification set my hand and seal, this Fourteenth day of October, in
the year of our Lord One thousand eight hundred and eighty one.