Improvements in Flyers for certain Spindles for Spinning Flax and similar Fibrous Materials.
Year: 1889

page_text: Date of Application, 14th Nov., 1889
Complete Specification Left, 13th Aug., 1890-Accepted, 13th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in Flyers for certain Spindles for Spinning Flax and
similar Fibrous Materials.
I, JOSHUA VALENTINE EVES, of The Forth River Mills, Falls Road, Belfast, in the
County of Antrim, Ireland, Mill Manager, do hereby declare the nature of this
invention to be as follows :—
This invention relates to the flyers of spindles for spinning flax or other fibrous
materials upon pirns, and is designed with the object of reducing the size and weight
of the flyer to a minimum and of keeping the woight as near to the centre of the
spindle as possible and thus remove to a great extent that vibration or shake in the
spindle which is caused by the momentum and centrifugal force set up in the flyer as
it rotates.
Hitherto flyers have been made with the legs or arms parallel throughout their
length, and sufficiently wide that the head of the bobbin and the whole bobbin of yarn
can pass in between them. Now in spinning upon a pirn or cop, or on a bobbin
without a head where the yarn is not laid in lavers extending over its whole length,
this parallelism of width is not required inasmuch as the pirn or cop is lowered on
the spindle as the yarn is built up upon it, and the part of the pirn that is filled
remains bolow the tweezle eye.
This invention consists essentially in forming the flyer narrower at the shoulders
and wider at the lower ends of the legs, so that at the one part it may be sufficiently
wide to embrace the pirn or headless bobbin only, while at the other the width will
be sufficient to extend beyond and build up the full amount of yarn.
In carrying out the invention I construct the flyer practically without shoulders or
with very narrow shoulders and make the legs parallel for the greater part of their
length with the space between them only sufficiently wide to allow the pirns to pass
through and at the end I incline or bond the legs outwards to suit or correspond with
the tapered end of the pirn or cop when the yarn is wound upon it. Or the end of
the legs may be cranked so that while the lower end of the leg may be parallel with the
upper end the distance between may be wider.
The advantage gained by this light stiff flyer with its weight near the centre of
rotation I consider will be very great in helping to keep a steady running spindle
with a long traverse.
Dated this 18th day of November 1980
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, l'atent Agents
COMPLETE SPECIFICATION.
Improvements in Flyers for certain Spindles for Spinning Flax and
similar Fibrous Materials.
I, JOSHUA VALENTINE EVES, of The Forth River Mills, Falls Road, Belfast, in the
County of Antrim, Ireland, Mill Manager, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to the flyers attached to the end of the spindles used in
spinning flax or other fibrous materials upon pirns, and is designed with the object of
reducing the size and weight of the flyer to a minimum and of keeping the weight as
near to the centre of the spindle as possible and thus remove to a great extent that
vibration or shake in the spindle which is caused by the momentum and centrifugal
force set up in the flyer as it rotates.

page_text: Hitherto such flyers have been made with the legs or arms parallel throughout their
length, and sufficiently wide that the whole bobbin of yarn can pass in between them
at any point. Now in spinning upon a pirn or cop, or on a bobbin without a head
where the yarn is not laid in layers extending over its whole length, this parallelism
of width is not required, in as much as the pirn or cop is lowered on the spindle as
the yarn is built up upon it, and the part of the pirn that is filled remains below the
tweezle eye.
This invention consists essentially in forming the flyer narrower at the shoulders
and wider at the lower ends of the legs, so that at the top or upper part it may
be sufficiently wide to embrace the pirn or headless hobbin only, while at the other
end it will be of a width and shape sufficient to extend beyond the pirn and embrace
the cop nose and build up the full amount of yarn thereon.
It will be fully described with reference to the accompanying drawing in which my
improved flyer is shown in position upon a spindle and the position of the pirn and
cop thereon are shown when about two-thirds full.
The legs A of the flyer project or are bent out from the head B only a sufficient
distance to allow clearance for the pirn C, forming very narrow shoulders to the flyer.
The legs A, are as shown parallel for a greater part of their longth, or may be
approximately parallel being too close to embrace the full diameter of the cop D of
yarn, the space between them being only sufficiently wide to allow of the pirns ()
when empty to pass through.
The ends a of the legs I incline or bend outwards to correspond with the tapered
end or nose of the cop D, as the yarn is wound upon it. The distance between the
outer ends of the flyer legs A is thus about equal to the diameter of the finished
cop D, while that between the upper part of the legs is only slightly in excess of the
diameter of the pirn C.
I prefer to make the head B of the flyor level with the top of the arms A and
projecting down between then as shown at b. The diameter of the part b is the same as
that of the spindle E. By this arrangement the pirn C can travel over the head B of
the flyer and the spindle can be made shorter by an amount equal to the length of
the head, thus allowing more space between the top of the spindle and the thread
plate.
The advantage gained by this light stiff flyer with its weight near the centre of
rotation I consider will be very great in helping to keep a steady running spindle
with a long traverse.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A flyer constructed with legs running parallel or approximately parallel for the
greater part of their length and inclined or bent out at the bottom, the parallel part
of the legs having a space between them only sufficient to embrace the empty pirn or
bobbin and the bent or inclined part embracing the tapered end or nose of the cop
and at the end expanded to the diameter of the full cop substantially as described.
Dated this 8th day of August 1900.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.