IMPROVEMENTS IN SPINDLES AND FLYERS
Year: 1879

page_text: LETTERS PATENT to Sinclair Hunter, of Belfast, in the County of Antrim,
Ireland (Mechanic), for the Invention of "IMPROVEMENTS IN SPINDLES AND
FLYERS."
Sealed the 2nd January 1880, and dated the 7th July 1879.
16
PROVISIONAL SPECIFICATION left by the said Sinclair Hunter at the Office
of the Commissioners of Patents on the 7th July 1879.
SINCLAIR HUNTER, of Belfast, in the County of Antrim, Ireland (Mechanic).
IMPROVEMENTS IN SPINDLES AND FLYERS."
This Invention consists of a new contrivance for fastening or attaching flyers to
spindles, and is applicable to twisting, spinning, roving, and such like frames for
flax, hemp, jute, cotton, wool, and other fibrous materials.
The contrivance is a peculiar form or arrangement of the flyer and spindle top.
The top of the spindle which passes through the head of the flyer has a flat or flats
formed upon it for a portion of its length: Below this flattened portion the
remainder of the part of the spindle which enters the flyer is cylindrical, and the
head of the flyer is made to fit thereon. A socket is bored in the head of the flyer
of a diameter corresponding to that of the top of the spindle for a portion of its
depth only, and the remainder of the socket is inade a counterpart of the flattened
extremity of the spindle. To prevent the flyer from rising out of place during the
rotation of the spindle a locking notch is formed by bevelling off a portion of one
edge of the flattened part equal in length to the depth of the flattened portion of
the socket. The notch may be angled slightly so as to press the flyer down on the
shoulder of the spindle.
By this arrangement a simple and durable means of attachment is obtained,
screws, slots, and pins or keys are dispensed with, and the heads of the spindle and
flyer are free from any projections or nicks; thus there is nothing to accumulate
dirt or make waste by catching the "end."
By having the notch in the face of the flats on both sides thereof the spindle
may be driven in either direction as is desired, but as usually the flyers are only
required to run in one direction one notch will suffice.
When doffing or removing the flyers from the spindles it is only necessary to
turn them back a small portion of a revolution when they are free to be lifted off,
and as they can only go sufficiently backwards to be free it is rendered practicable
to doff the frame without breaking the ends between the flyers and the delivery
rollers, which is the common method of doffing in spinning frames with screwed
flyers; but by means of this Invention the end can be left in the flyer of spinning
or twisting frames, as is now done in roving frames where keyed flyers are used.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said-Sinclair-Hunter-in-the-Great Seal Patent Office on the 7th January
.1880.
SINCLAIR HUNTER, of Belfast, in the County of Antrim, Ireland, Mechanic.
" IMPROVEMENTS IN SPINDLES AND FLYERS."
This Invention consists of a new contrivance for fastening or attaching flyers to
spindles, and is applicable to twisting, spinning, roving, and such like frames for
spinning or twisting various fibrous materials.
The nature of this Invention will be understood from the following description,
reference being had to the accompanying Drawing, wherein the same figures and
letters of reference always apply to the same or like parts.
Figures 1, 2, 4, and 5 are different views of the spindle tops c; Fig. 3 is a section
of the flyer head a through the socket; Figures 6 and 7 are top and side views of
flyer a and spindle c attached; Figures 8, 9, and 10 shew the spindle top c with
two flats c² and the flyer a locked thereon; Fig. 11 is a detached top view of
flyer a; Figures 12, 13, and 14 illustrate the form of attachment employed when
the spindle c is required to turn in either direction.
The contrivance is a peculiar form or arrangement of the flyer a and spindle
top c.
That portion of the spindle c which passes through the head of the flyer a has a
flat c¹ or flats c² formed upon it for; say, one half its length; thus instead of being
circular in plan view it becomes a segment or portion of a circle. The lower
portion of the top of the spindle or that part which is immediately above the
shoulder is left cylindrical and fits the socket of the flyer a as usual. The socket
of the flyer a is bored for a portion of its depth, as at a¹, to correspond with the
cylindrical portion of the spindle top, and the remaining depth a³ of the socket is
made a counterpart of the flattened portion of the spindle, which, interlocking with
the flyer, will thus carry the flyer round with it; but to prevent the flyer a from
rising up on or coming off the spindle c on the flat face c' or faces c² of the segmental
shaped portion of the spindle top c a locking shoulder is formed on the spindle by
bevelling off a portion of one edge of the flattened part, as at e and e'.
The locking shoulders are bevelled slightly on their under faces so as to press
the flyer a down upon the shoulder of the spindle; thus the flyers are brought into
and kept in line when working.
By having the locking shoulders on opposite sides of the spindle, as illustrated
in Figures 12, 13, and 14, the spindles c may be driven in either direction, as
desired, without changing either spindles or flyers, but as usually the spindles and
flyers are only required to run in one direction one shoulder will in general be used,
as illustrated in Figures 1, 2, 4, 5, 6, and 7.
Having now set forth the nature of my Invention of "Improvements in Spindles
and Flyers," and explained the manner of carrying the same into effect, I wish it
to be understood that under the above in part recited Letters Patent I claim the
"interlocking attachments constructed and operating as above described.
In witness whereof, I, the said Sinclair Hunter, have hereunto set my hand
and seal, the Third day of January, in the year of our Lord One thousand
eight hundred and eighty.
SINCLAIR HUNTER. (L.s.)