Improvements in Spinning Frames.
Year: 1892

page_text: Date of Application, 26th Apr., 1892
Complete Specification Left, 26th Jan., 1893-Accepted, 4th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Spinning Frames.
I, FRANZ BLÜMEL, of Jungbuch, near Trautenau, Province of Bohemia, in
the Empire of Austria, do hereby declare the nature of this invention to be as
follows:-
This invention relates to spinning frames of the throstle frame type, by which
the roving produced by the roving frame is worked into fine-spun yarn by stretching
and twisting it again.
The invention has for its main purpose so to arrange the parts of the spinning
frame that the inoment of inertia in the portion of yarn between the drawing-frame
and the spindle is reduced as far as possible, and that at the same time the
said portion of the yarn does not bear against guiding parts, whereby friction
and breakage of the yarn is avoided and the spindles can be run at greater speed
than hitherto.
As it is a consequence of this arrangement that the pull which the yarn exerts
on the circumference of the spool is considerably diminished, it is necessary to
provide for more exact braking of the spools, and for this purpose the invention
also comprises improved braking devices.
According to my invention, the drawing-frames are so arranged above the spindles
that the threads pass down vertically to the central portion of the flyers; thus the
thread is practically brought into the axis of rotation, or at least will but little
deviate from the same, and consequently no appreciable momentum can be created
in the thread, provided that it always is kept suitably stretched by the braking of
the spool. As the thread does not touch any of the usual guides between the
drawing rollers and the flyer, twisting is performed in the whole length of yarn
between the said parts.
Each flyer is provided with a cylindrical hollow cap, closed at its top, and in
this cap there is formed a central hole and a lateral hole situated outside the plane
of the flyer, so that the thread passing through both holes does not hear against
the flyer in running downward to the lower end of one flyer arm, which carries an
eye formed of a coiled wire. As the two holes in the guide cap are united by an
inclined or helical slot, the yarn can be laid into the three guide openings of the
flyer without being obliged to thread it in.
Diametrically opposite to the lateral guide hole of the flyer cap, there is a larger
hole through which dust and small fibres are ejected.
In order to more exactly control the braking of the spools, which is necessitated
by the considerably diminished pull of the yarn on the spools, the usual notches in
the front flange of the spool rail, for receiving the cords carrying the braking
weights, are dispensed with, and there is mounted on the edge of the said flange,
near each spool, a small sliding carriage, in which a notch for the braking cord is
formed. By a suitably arranged spring, each sliding carriage is held in the position
given it with comparatively great friction.
For the purpose of increasing the brake power in proportion to the increase in
diameter of the spools the said flange of the spool rail, on which the sliding carriages
are mounted, is not rigidly connected to the said rail, but is made movable in
suitable guides along the rail and it is coupled with a weighted lever, which is
allowed to move at a given rate, under the action of its weight, every time the
spool rail is raised or lowered. To this end a spiral cam is provided, against the
circumference of which one end of the said weighted lever, or of a lever coupled
with it, bears, and the shaft of the said cam, which tends to turn in the required
direction under the action of a wound up weight or spring, is geared with an

page_text: escapement similar to that of time-pieces and periodically acted upon by a rod, to
which motion is imparted by a crank of the shaft effecting the raising and lowering
of the spool rail.
Dated the 26th day of April 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Spinning Frames.
I, FRANZ BLUMEL, of Jungbuch, near Trautenau, Province of Bohemia, in
the Empire of Austria, 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 spinning frames of the throstle frame type, by which
the roving produced by the roving frame is worked into fine-spun yarn by stretching
and twisting it again.
The invention has for its main purpose so to arrange the parts of the spinning
frame that the moment of inertia in the portion of yarn between the drawing-frame
and the spindle is reduced as far as possible, and that, at the same time the said
portion of the yarn does not bear against guiding parts, whereby friction and
breakage of the yarn is divided, and the spindles can be run at greater speed
than hitherto.
As it is a consequence of this arrangement that the pull which the yarn exerts
on the circumference of the spool is considerably diminished, it is necessary to
provide for more exact braking of the spools and for this purpose the invention
also comprises improved braking devices.
According to my invention, the drawing-frames are so arranged that the threads
pass down vertically to the central portion of the corresponding flyers, which are
provided with a cylindrical hollow guide-cap, having a central hole and a lateral
hole situated outside the plane of the flyer.
In order to more exactly control the braking of the spools, which is necessitated
by the considerably diminished pull of the yarn on the spools, the usual notches
in the front flange of the spool rail for receiving the cords carrying the braking
weights, are replaced by a small sliding carriage near each spool and provided with
a notch.
For the purpose of increasing the brake power in proportion to the increase in
diameter of the spools, the said sliding carriages are mounted on an end wise
movable bar, which is connected with a lever conveniently displacing itself under
the action of a spiral cam.
In order to enable my invention to be fully understood, I will describe how
it can be carried into practice by reference to the accompanying drawing, in
which :-
:―
Figure 1 is a front elevation of one end portion of a spinning-frame constructed
according to my invention, and,
Figure 2 is a transverse section of the same.
Figure 3 is a plan of part of the thread guide bar.
Figure 4 is a sectional elevation drawn to a larger scale of one of the spindles
with its flyer and guide cap.
Figure 5 is a front elevation of the guide cap and
Figure 6 is a horizontal section of Figure 4 taken through the guide cap..
Figures 7 and 8 are a front elevation and sectional end elevation respectively of
the braking rail and one of the braking carriages.
Referring to Figures 4, 5 and 6, a is the flyer having its central portion, in
which the screw-threaded hole for its connection with the spindle 6 is formed,

page_text: made into an upwardly extending and externally threaded short tube a', the closed
top end of which is conical. This tube or cap a¹ made integral with the flyer
forms an abutment for the spindle and prevents the straining of the screw
threads of the flyer and spindle while the latter is running besides which, as the
cap a' is closed at its top, it also protects the screw threads against the penetration
of dust or water so that they wear during a considerably longer time than
heretofore. The shoulder of the spindle, for which a seat is formed at the
lower end of the female screw threads of the flyer, has a similar purpose, viz. to
serve as an abutment, by which the screwing home of the flyer is limited.
Upon the external screw threads of the cap a' is screwed the guide-cap c by
preference made of brass and having the shape of a hollow cylinder closed at its
top, where a central hole c is provided for the thread d to pass in. The said
hole c¹ is bushed with a ring made of phosphor-bronze or hardened steel. For
the passing out of the thread from the guide-cap c, a lateral hole c³ is formed in
the said cap outside the plane of the flyer, so that the thread passing through both
holes cand does not bear against the flyer in running downward to the lower
end of one flyer arm, which carries an open eye a³ formed of coiled wire. As
the two holes c' and cof the guide-cape are united by an inclined or helical
slot c, the yarn can be laid into the three guide openings of the flyer without
being obliged to thread it in. Diametrically opposite to the lateral guide-hole c³
of the flyer cap c, is a larger hole c, through which dust and small fibres are
ejected.
Unlike the usual arrangement, the drawing-frames fhave such a position that
the threads & pass down vertically from the stretching rollers to the upper holes e¹
of the guide caps c, without touching the edges of the openings g' in the guide-
bar 9, Figures 1, 2 and 3.
As the main part of the portion of yarn between the drawing frame and the
spool is thus practically brought into the axis of rotation so that no appreciable
momentum can be created in the thread, and as on the other hand, there is no
retarding friction in guides, the tension of the yarn d, and consequently the pull
exerted by the same on the circumference of the spool h are considerably
diminished. This fact necessitates a lesser braking of the spools and provisions
for exactly adjusting the reduced braking to the existing pull.
The device with which my spinning frame is provided for admitting of an exact
control of the braking of the spools, consists of a bar jarranged near the front
edge of the spool rail k and of small sliding carriages 1 movable along the said
bar. Each sliding carriage has the shape of a small oblong block with
upward projections forming a guide between which the cord i carrying the
braking weight is placed. A circularly bent flat spring ³, the ends of which
are sprung into grooves 7, j' on both sides of the bar j, holds each sliding
carriage in the position given it for the time being.
In order to admit of the automatic increase of the braking of the spools / at the
same rate as their diameter is increasing, the bar jis not rigidly connected to the
spool rail k, but is adapted to slide in hooks j³, secured to the said spool rail, and
by means of a connecting rod or link m', it is connected with a lever m which,
after each raising and each lowering of the spool-rail & displaces the braking bar j
at a certain rate, whereby the braking cords i are brought into contact with a
greater portion of the circumference of the braking whirls of the spools h.
The lever m makes its periodical movements under the action of the weight m³,
every time the lever n, which is connected with the lever m by mears of a link n',
allows the displacement; this takes place when the spiral camo against the
circumference of which bears the anti-friction roller n of the lever n, makes an
angular movement in the direction induced by its driving weight o. In order that
these angular movements of the spiral cam o may be controlled by the rising and
lowering of the spool rail k, the shaft o² of the said cam is provided with an
escapement, the pawls of which are alternately engaged and disengaged under the
action of the shaft, which causes the spool rail k to rise and fall.

page_text: The said escapement consists of the ratchet wheel p mounted on the shaft o³,
and of the two pawls p' and 3, which are raised and lowered by the engaging and
disengaging rod p³. The said rod p has the necessary movements imparted to it
by means of a crank pin secured to the disc q', which is carried by the rock-
shaft q causing the spool rail k to rise and descend in a well known way.
By means of the hand-wheel r the weight o¹ can be wound up when it has run
down.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:―
1. In a spinning frame provided with flyers, an arrangement of the drawing
frames in which the yarn threads run vertically downward to the spindles, the
flyers of which carry at their centre a hollow guide cap, having a central hole in
its top and a lateral hole situated outside the plane of the flyer, substantially as
and for the purpose described.
2. A guide cap such as is referred to in the 1st claiming clause having an
opening diametrically opposite to and larger than the lateral thread guide hole
and serving for the ejection of dust, substantially as described.
3. A guide cap such as is referred to in the 1st claiming clause having an
inclined slot uniting the two holes so as to allow the yarn to be easily inserted,
substantially as hereinbefore described.
:
4. In a spinning frame, an adjustable spool braking device, consisting of small
sliding carriages, movable along the spool rail and each having a tranverse guide
for the reception of the cord, carrying the braking weight. +
5. In a spinning frame, a device for the automatic increase of the braking
power in proportion to the increase of the diameter of the spools, this device being
characterized by a bar, adapted to slide along the spool rail and provided with
guides for the braking cords and by a weighted lever connected to the said bar
and allowed to move at a certain rate, under the action of the weight, after every
raising and lowering of the spool rail; the shaft which causes the spool rail to
rise and descend reciprocating a rod, by means of which an escapement is so acted
upon, as to periodically set free a shaft driven by a spring or weight and carrying
a spiral cain against which the weighted lever bears directly or indirectly,
substantially as described.
6. The improved spinning frame hereinbefore described and illustrated in the
accompanying drawing.
Dated the 26th day of January 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.