AN IMPROVED MODE OF PRODUCING A 'Lock Tor' FOR ROVING FLYERS AND SPINDLES
Year: 1876

page_text: LETTERS PATENT to Thomas Kilvington Hattersley, of Leeds, in the County of
York, Spindle Manufacturer, for the Invention of "AN IMPROVED MODE OF
PRODUCING A 'Lock Tor' FOR ROVING FLYERS AND SPINDLES."
Sealed the 24th April 1877, and dated the 15th December 1876.
PROVISIONAL SPECIFICATION left by the said Thomas Kilvington Hattersley
at the Office of the Commissioners of Patents on the 15th December 1876.
THOMAS KILVINGTON HATTERSLEY, of Leeds, in the County of York, Spindle
Manufacturer. "AN IMPROVED MODE OF PRODUCING A 'Lock Top' FOR ROVING
FLYERS AND SPINDLES."
In fitting roving flyers to their spindles it is necessary to provide for the facile
doffing of the flyer to allow of the removal from the spindle of the cop or bobbin.
This fitting has commonly been effected by forming in the socket of the flyer a
straight feather or rib, which entered a groove in the top of the spindle. This
arrangement however had the disadvantage of allowing the flyer to rise out of place
while at work. Plans for temporarily locking the flyer to the spindle have also
been devised, but they have been costly to carry out. Now the object of the present
Invention is to provide a simple and efficient "lock top" for the flyer and spindle
without adding to the cost of their manufacture. This I effect in the following
manner-The coned top of the spindle I submit to the action of an annular rotating
cutter, setting the spindle in such a position with regard thereto as to obtain from
the cutter a diagonal segment-shaped groove. In the socket of the flyer I fit a
stud, the head of which will in cross section correspond with the groove cut in the
spindle, and will fit closely against the inner periphery of the socket. This stud I
secure to the flyer by rivetting, and when applying the fyer to the spindle
the stud will drop into the groove and lock the flyer in place.
The spindle may be similarly grooved on its opposite sides to facilitate the fitting
of the flyer thereto. This arrangement of "lock top" admits of the flyer being
doffed with the same facility as when a straight feather is used, and the cost of thus
producing a "lock" will not exceed the simplest arrangement hitherto adopted for
fitting the spindle and flyer together.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Kilvington Hattersley in the Great Seal Patent Office on the
14th June 1877.
"
THOMAS KILVINGTON HATTERSLEY, of Leeds, in the County of York, Spindle
Manufacturer. AN IMPROVED MODE OF PRODUCING A 'LOCK TOP' FOR ROVING
FLYERS AND SPINDLES."
In fitting roving flyers to their spindles it is necessary to provide for the facile
doffing of the flyer to allow of the removal from the spindle of the cop or bobbin.
This fitting has commonly been effected by forming in the socket of the flyer a
straight feather or rib, which entered a groove of corresponding form in the top of
the spindle.
This arrangement however had the disadvantage of allowing the flyer
to rise out of place while at work. Plans for temporarily locking the flyer to the
spindle have also been devised, but they have been costly to carry out. Now the
object of the present Invention is to provide a simple and efficient "lock top" for
the flyer and spindle without adding to the cost of their manufacture. This I effect
in the manner illustrated in the accompanying Drawing, where Fig. 1 is a side
elevation partly in section of a roving flyer fitted to its spindle according to my
Invention; Fig. 2 is a transverse vertical section taken in the line of the axis of the
flyer;
and Fig. 3 is a horizontal section taken in the line 1, 2, of Fig. 1.
In these Figures A is the flyer formed, as usual, with a socket a to receive the
head of the spindle B. In this spindle a groove b of peculiar form is cut to receive
a stud a¹, which projects inwards from the socket a. The spindle, which is coned
at top, as usual, I submit to the action of an annular rotating cutter for the purpose
of forming the groove b. This cutter is shewn in side elevation at Fig. 4, and in
transverse section at Fig. 5.
The spindle B, I set in such a position with regard, to the cutter marked C as to
obtain from the cutter a segment-shaped groove lying diagonally to the axis of the
spindle and parallel to the plane of its axis. This is clearly illustrated at Figures 4
and 6, the latter of which Figures shows in plan view the position of the annular
cutter C with respect to the coned head of the spindle.
Fig. 7 shews in perspective the head of the spindle so grooved, the depth of the
groove throughout its length being equal or nearly so to the half diameter of the
spindle; the depth may however vary if thought desirable.
Fitted to the socket of the flyer is the stud a¹, the head of which will take some-
what the shape in cross section of the groove cut in the spindle. This stud I secure
to the flyer by rivetting.
The spindle may if thought desirable be similarly grooved on its opposite sides
to facilitate the fitting of the flyer thereto, and the form in transverse section of the
groove may be varied without materially affecting the efficiency of the "lock."
When applying the flyer to the spindle it need only be loosely placed on the top
of the spindle, and as soon as the spindle by the starting of the machine is set in
motion in the direction shown by the arrow in Fig. 3, the groove will by its peculiar
forn draw the flyer down tightly to its place, and prevent the flyer from being
drawn upwards by the direct pull of the sliver.
A further advantage of this peculiar form of groove is that when the machine is
suddenly stopped the tendency of the flyer to rise by its centrifugal force will be
neutralized, which would not always be the case were the groove simply a diagonal
cut or of a spiral form. When however the machine stops the flyer will loosen itself
on the spindle, and may be readily lifted off, whereas ordinarily the flyors require to
be loosened by striking the head of the bobbins smartly against them.
Having now set forth the nature of my Invention of "An Improved Mode of
Producing a Lock Top' for Roving Flyers and Spindles," 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 mode herein described for producing a
lock top" for roving flyers and spindles, whereby, without adding to the cost of

page_text: manufacture, a firm unyielding connection will be maintained between the parts
while the machinery is in action, and when it is at rest the doffing of the flyer may
be readily effected.
In witness whereof, I, the said Thomas Kilvington Hattersley, have hereunto
set my hand and seal, the Thirteenth day of June, in the year of our Lord
One thousand eight hundred and seventy-seven.
THO. K. HATTERSLEY, (L.S.)