US2690643A

US2690643A - Telescopic supporting device for thread guides

Info

Publication number: US2690643A
Application number: US278991A
Authority: US
Inventors: Vella Luigi
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-03-28
Filing date: 1952-03-28
Publication date: 1954-10-05
Anticipated expiration: 1971-10-05

Description

Oct. 5, 1954 VELLA 2,690,643

TELESCOPIC SUPPORTING DEVICE FOR THREAD GUIDES Filed March 28, 1952 2 Sheeis-Sheet 1 INVENTOR.

TELESCOPIC SUPPORTING DEVICE FOR THREAD GUIDES Filed March 28, 1952 L.. VELLA Oct. 5, 1954 2 Sheets-Sheet 2 INVENTOR. L,1 &6a/

Patented Dot. 5, 1954 UNITED STATES PATENT OFFICE TELESCOPIC SUPPORTING DEVICE FOR THREAD GUIDES 4 Claims.

My invention relates to a telescopic supporting device for thread guides in ring spinning frames, and attains over conventional devices the advantages hereinafter specified.

Figures 1 and 2 show devices as conventional in most of the ring spinning frames used at present, where the thread guides are fixed and the spindle rail too is fixed. At the beginning of winding, the balloon is ample and of a certain length proportional to the lift (see Fig. 1); then as winding is progressing, the balloon is reduced more and more until disappearing almost completely toward the top of the pirn (Fig. 2). To this progressive reduction there corresponds, as it is known, a proportional increase of the stresses in the thread, which finally reach values so high as to overcome the resistance of the thread, breaking it and thus creating defects in the yarn, unless the speed of the spinning frame is greatly reduced.

It is an object of my invention to provide a device permitting obtaining a balloon, which after attaining the length of maximum yield, keeps said length constant till winding is completed, and keeps a convenient amplitude. The Variations of length and width undergone by the balloon being thus reduced to minimum, the stresses induced on the thread are reduced to an analogous extent. Moreover, since the balloon is sufficiently ample and regular, it absorbs any possible instantaneous extra stresses caused in the thread by irregular running of the traveller and avoids breakage thereof, while if as in conventional cases the balloon is reduced specially in the last part of winding in length and in amplitude and is already charged with other extra stresses at any increase of the latter, even if transitory, breakage of the thread is inevitably produced. Said device shows the following characteristic features, each of which constitutes a particular object of my invention.

(a) The ring-carrier plate and the thread guides are accommodated on the spinning frame and connected with one another in such a manner as to permit first the ring-carrier plate to rise alone for a certain section of the formation of the cop, whereafter the ring-carrier plate subsequently rises together with the thread guide;

(b) Between said movable parts, there is inserted a dampending system whence the weight of the part relative to the thread guide, which is at standstill initially, operates rapidly from zero to the maximum value during said section of the formation of the cop, after reaching which, also the thread guides rise with the plate. Ihe elastic deformations occurring in the different members grow and the defects of formation of the cop which are a consequence of said deformations, are diluted in vertical sense over a certain cop section in such a manner as to prove practically insignificant.

(0) During the stage of doffing, in order to facilitate the extraction of the full cops and replacement with the empty pirns, the support of the thread-guides can be lifted, while the bracket separators go from the horizontal position to the vertical position.

My invention will now be further described with reference to the accompanying drawings illustrating by way of example one embodiment of my invention.

In the accompanying drawings:

Figs. 1 and 2 show two conventional devices wherein the thread guides and the spindle rails are stationary.

Fig. 3 shows partly in section the thread guide support mounted on the spinning frame, in the starting position.

Fig. 4 shows the front arrangement on the ring spinning frame, of the members composing the telescoping assembly.

Fig. 5 shows the final winding position of the ring-carrier plate in respect to the thread guides.

Fig. 6 shows the position of the horizontal bracket separators during reeling.

Fig. 7 shows the position of the bracket separators when they are tilted automatically during the doffing operations.

The parts of the spinning frame which do not relate to the invention are marked in the accompanying drawings with thin solid lines and are distinguished with reference numerals subsequent to those of the members composing the device according to the invention, viz.: the spindle rail 23 carries fixed thereon the stocks 24 which contain the pins of the spindles 25 onto which the empty pirns are fitted and on which the yarn is wound in superimposed conical layers by means of the ring-carrier plate 2 in its alternate and progressive movement in building up the cop; the drawing frame 26 instead serves to support all the drawing members of the spinning frame.

With reference to the accompanying drawings, the device according to the invention is composed of a tubular guide 3 fixed by means of the support 1 to the ring-carrier plate 2; in said tubular guide 3, which is provided with a lower stop 3 located in the bottom thereof, a rod 4 is freely slidable and carries at one end the traverse I which supports the curled thread guide 5, while at 3 the other end there is provided the dampening spring 6.

To the traverse I there are fixed also the suspended or hanging supports 8 supporting a shaft I free to rotate in its bearing seats and on which, along the longitudinal axis and rigid therewith, the tiltable separators E i interposed half-way between the spindles are carried.

Some separators carry a conveniently shaped tail I2 and vertically thereabove, fixed to the drawing frame 26, there are two stop noses: the upper one I3 is fixed and bent downward, while the nose I6 is pivoted and oscillates about the upper end and has its tip directed upward.

To the same traverse I and in convenient position there are also fixed the angle-pieces I5 the lower ends of which rest at determined times on the members 9 limiting the down stroke of the traverse I and slidably mounted each in a vertical guide I6. The guide It is fixed to a support I"! by means of a screw IE so that the guide may be adjusted vertically; The support I! is rigid with the ring spinning frame and is also provided with the sheave I8 necessary as a guide for the rope I8 which causes the vertical displacement of the members 9 in their own guides. One end of the rope is is suitably connected to the upper end of the member 9 as shown in Fig. 3.

As a consequence of the displacement of the stroke limiting members 5, the displacement of the angle pieces I5 of the traverse I is caused and, consequently, of the parts associated therewith; this independently of the displacement of the ring-carrier plate 2, due to the telescoping connection 3 and 4.

Operation of the device is as follows:

The empty pirns are placed onto the spindles 25, the ring-carrier plate 2 is placed in the starting position (Fig. 3), and thus the angle-pieces I5 come to rest on the members 9, which in turn rest on the fixed parts ISA of the vertical guides I5, in such a manner as to leave between the tip of the pirn and the curled thread guides 5 a distance which is adjusted in setting the machine by adjusting each vertical guide I6 in its support I! after release of the screen It.

While the ring-carrier plate 2 starts its movement for the formation of the conical part and the progressive vertical movement of formation of the body of the cop, the rod 4 and the whole assembly fixed thereto (resting on the members 9) does not partake of the movement of the ringcarrier plate 2 and the relative movement of lifting of the tubular guide 3 in respect of the rod 4 produces a progressive deformation of the dampening spring 6. If then the distance a has become zero and the spring 6 .has been closed (Fig. 5) the rod I resting on the bottom or lower stop 3 of the tubular guide 3 forms a unit therewith and, therefore, partakes of its movement.

Also the distance a is adjusted according to need by adjusting the tubular guide 3 in its support 7 provided with special adjusting and fastening screws.

From this time on, the rod 4 and the Whole upper assembly rests on the ring-carrier plate 2, whence the distance from the latter to the curled thread guides 5 remains unaltered until completion of the cop (as visible in Fig. 5)

The angle-pieces I5 then detach from the members 9 which are excluded from operation, during the entire following period of time.

When the cOpS are completely full with yarn, the members I and 2 are returned to their initial position, with which the angle-pieces I5 come to rest again on the members 9; then each rope I9 running toward the right (in the drawing) is actuated to make the members 9 slide vertically upwards in their vertical guides I6.

Together with the members 9 are lifted also the angle-pieces I5 resting thereon, hence also the traverse I and the respective thread guides 5 as far as a certain limit, determined beforehand (visible in Fig. 7), such as to leave a space between the tip of the pirn and the thread guide 5, so as to permit extraction of the full cops and fitting the empty pirn onto the spindles 25 without having to tilt the curled thread guides 5 and the separators as in conventional spinning frames.

This lifting movement is effected while the ring is at standstill, that is to say while the ring-carrier plate is at standstill, because the rod slips out the tubular guide 3 by a length corresponding to the lifting effected.

In the stage of lifting the whole assembly fixed to I, the tail I2 comes to abut, at a certain point of its stroke, against the lower inclined portion of the stop nose I4, whence as this nose is free to oscillate about its fulcrum at its contact with the tail it is pushed by the latter toward the inside of the spinning frame (in the drawing, towards the right), leaving passage free.

In the subsequent instant, the tail I2, on getting past the previous position, meets this time the fixed stop nose I 3 and is compelled to assume together with the vertical translatory movement also the rotary movement about the axis of shaft IE! and a sliding movement about the tip of the nose.

Since the tail is rigid with the shaft II], the latter must assume the movement of rotation imparted to it and, consequently, the bracket separators I I, which too are fixed to the shaft at the opposite side of the tail, must also rotate through the same angle, so as to assume a nearly vertical position (Fig. '7).

In that position, the whole space above the spindles as well as the interspaces between said spindles, is completely free and without any members that might hinder the replacing of the cops.

After replacing the cops, the members 9 are lowered again by means of reverse movement of ropes I9 and, consequently, all the parts resting on said members 9 return to the initial position (Fig. 3).

During this descending stage the tail I2 meets the upper surface of inclined portion of the oscillating nose It whence it is not pushed toward the inside, but tends to hook-in the tail, which therefore is compelled, in going down, to rotate in the sense opposed to the stage previously described, returning the bracket separators to their horizontal position (Fig. 6) whereafter a new cycle starts.

The invention brings about considerable advantages in the field of textile technique and its application to ring spinning frames provides over the other systems used at present:

Considerable increase of output;

Nearly total elimination of breakages due to reeling;

Possibility of producing also with a continuous spinning machine such very soft twists as else are obtainable only with self-acting spinning machines;

General improvement of the qualities of yarn produced.

Also the whole assembly of the dampened telescope support for the thread guide may be applied to rings of obsolete construction, with suitable modifications, renewing therewith the reeling system and bringin their operation and yield up to the standard of spinning frames of very recent;

make, with the obvious advantage of rejuvenating the textile plants working at present with obsolete machinery.

Of course, the subject matter described hereinbefore and illustrated in the drawings, may be modified in the details of embodiment without departing from the scope of the invention.

What I claim is:

1. In a continuous ring spinning frame, a fixed spindle rail, a movable ring carrier plate, a thread guide supporting device comprising a tubular guide fixed to the ring carrier plate and provided with a lower stop; a rod slidable in said tubular guide; spring means within the guide intermediate the rod and lower stop, the other end of said rod projecting from said tubular guide; a traverse rigidly connected to said projecting end of said rod; thread guides carried by said traverse; hanging supports connected to said traverse; a rotatable shaft supported by said traverse; bracket separators rigidly connected to the rotatable shaft; a limiting member and said traverse being provided with means adapted to co-operate with said limiting member to limit its downstroke.

2. In a continuous ring spinning frame, a fixed spindle rail, a movable ring carrier plate, a drawing frame, a thread guide supporting device comprising a tubular guide fixed to the ring carrier plate and provided with a lower stop; a rod slidable in said tubular guide; spring means within the guide intermediate the rod and lower stop, the other end of said rod projecting from said tubular guide; a traverse rigidly connected to said projecting end of said rod; hanging supports connected to said traverse; a rotatable shaft supported by said traverse; bracket separators rigidly connected to said rotatable shaft; a limiting member and said traverse being provided with an angle-piece adapted to cooperate with said limiting member to limit the down-stroke of the traverse, said member being guided vertically by the drawing frame of the spinning frame and means for lifting said member during dotfing.

3. In a continuous ring spinning frame, a fixed spindle rail, a movable ring carrier plate, a drawing frame, a thread guide supporting device, comprising a tubular guide fixed to the ring carrier plate and provided with a lower stop; a rod slidable in said tubular guide; spring means within the guide intermediate the rod and the lower stop, 5

the other end of said rod projecting from said tubular guide; a traverse rigidly connected to said projecting end of said rod; hanging supports connected to said traverse; a rotatable shaft supported by said traverse; bracket separators provided with tails connected to the rotatable shaft; stop noses connected to the drawing frame of the spinning frame and adapted to cooperate with said tails to move the separators to a vertical position; a limiting member; said traverse being also provided with an angle piece adapted to cooperate with said limiting member to limit its stroke and guided vertically by the drawing frame of the spinning frame; means for lifting said limiting member during dofling; comprising further stop noses carried oscillatably by the drawing frame of the spinning frame and adapted not to cooperate with said tails during the descent of the traverse to move the separators to a horizontal position. v

4. In a continuous ring spinning frame, a fixe spindle rail, a movable ring carrier plate, a drawing frame, a thread guide supporting device, comprising a tubular guide fixed to the ring carrier plate and provided with a lower stop; a rod sliding in said tubular guide and resting at one of its ends upon said lower stop, the other end of said rod projecting from said tubular guide; a traverse rigidly connected to said projectin end of said rod; thread guides carried by the traverse; hanging supports connected to said traverse; a rotatable shaft supported by the supports; bracket separators provided with tails rigidly connected to the shaft; stop noses connected to the drawing frame of the spinning frame and adapted to cooperate with said tails to move the separators to a vertical position; a limiting member; said traverse being also provided with an angle-piece cooperating with said limiting member to limit the stroke of the traverse; a guide for said limiting member fixed to said drawing frame of the spinning frame, said guide for the limiting member being adjustable vertically respecting the drawing frame; means for lifting said limiting member during dofiing; and further stop noses carried oscillatably by the drawing frame of the spinning frame and adapted not to cooperate with the tails of the separators during the rising movement of the latter, but to cooperate with said tails during descent, moving the separators again to a horizontal position.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 570,423 Bracken Oct, 2'7, 1896 600,341 Whittum Mar. 8, 1898 1,008,066 Rhoades Nov. '7, 1911 1,913,616 Sailer June 13, 1933 1,965,471 Schaaff July 3, 1934 2,030,110 Keight Feb. 11, 1936