US2840980A - Flyer and paddle or presser for flyers of yarn or thread winding machines - Google Patents

Description

J y 1958 J. WHITEHEAD 2,840,980

FLYER AND PADDLE OR FRESSER FOR FLYERS OF YARN 0R THREAD WINDING MACHINES Filed May 25, 1955 AC7 MW- arramvsx United States Patent FLYER AND PADDLE OR PRESSER FOR FLYERS 0F YARN 0R THREAD WINDING MACHINES James Whitehead, Oldham, England, assignor to William Bodden & Son Limited, Oldham, England Application May 25, 1955, Serial No. 511,013

1 Claim. (Cl. 57-117) This invention relates to improved flyer tops and to the paddles or pressers for flyers of yarn or thread winding machines.

One object of the invention is to provide a presser which will produce denser packages or bobbins, so permitting a greater length of yarn to be wound onto the bobbin than has hitherto been possible, without impairing the physical characteristics (e. g. strength) of the yarn, for example by deformation or by stretching.

With this object in view, the present invention provides a presser for flyers of yarn or thread winding machines which has, at points in the path of the yarn, impedance formations whose function is to impede the travel of the yarn along the presser as it is wound onto a package, the said formations being spaced apart each by a distance which is less than the staple length of the fibres of the yarn.

By providing the said formations (hereinafter referred to as impedance formations) yarns, such as soft twisted yarns, can be wound into tighter packages since the formations function within the staple length of the fibres of the yarns so that their action does not depend in any way upon the frictional engagement of the fibres one against the other within the yarn itself to prevent their being pulled apart as a result of twist contraction.

The impedance formations may conveniently be in the form of frictional edges provided by aligned holes, preferably two, through which the yarn passes as it is wound onto the package, the said holes being spaced apart by a distance which is less than the staple length of the fibres, the material between the two holes being, however, wide enough to have formed therein, a tapered groove to form a constriction for the impeded yarn.

There are preferably constrictions provided in the thickness of the material of the presser, disposed so as to guide the yarn between the holes and to guide the yarn from the presser onto the package, these constrictions serving also to condense and keep the roving or yarn in compact form as it is wound.

The constrictions between the holes may advantageously be in the form of a U-sectioned groove, and this groove may be of constant cross-section or, if desired, it may taper in the direction of travel of the thread.

The invention will be described further, by way of example, with reference to the accompanying drawings in which:

Fig. 1 is a side view of a flyer constructed in accordance with the invention;

Fig. 2 is a corresponding view, on an enlarged scale, of the paddle or presser of the flyer showing the detail thereof; and

Fig. 3 is a rear view similar to Fig. 2.

It will be appreciated, however, that the constructional details of this example may be varied without departing from the scope of the invention.

A flyer for a yarn or thread winding machine comprises the usual inverted U-shaped structure carried upon a flyer top 11 through an aperture 12 in which roving (not 2,840,980 Patented July 1, 1958 shown) is fed. One of the legs 13 of the U-shaped structure 10 is hollow and split, and the roving is fed therein to a presser 14 which is located at the lower end thereof.

The presser 14 comprises a paddle-shaped elementin the form of an arm 15 and a flattened head 16, the arm of which is bent at a right angle to a vertical wire 17 carrying clips 18 whereby it is atached to the hollow arm of the flyer. By this arrangement the head 16 is disposed approximately medially of the ends of the two legs of the U structure 10.

In the head 16 of the presser there are two holes 19, 20, these being in alignment with the horizontal part 15 of the presser arm. Slots 21, 22, are provided, one communicating with each of these holes 19, 20, whereby the thread or yarn may readily be introduced therein. The space between the two holes 19 and 20 is less than the staple length of the fibres of the yarn or roving to be wound thereby.

Extending between the two holes in one face of the presser head there is provided a constriction in the form of a U-sectioned groove 23 so that as yarn passes from one hole to the next it is guided and compacted by this groove. This groove 23 can either be of constant section throughout or it may (as illustrated) be tapered in the direction of travel of the yarn. A second constriction 24 is provided, and this is associated with the hole 20 remote from the presser arm 15. It is in the form of a groove in the thickness of the presser head 16 at the face opposite to the face in which the first constriction 23 is provided and extends from the hole becoming progressively shallower towards the end of the presser head 16. The constriction or groove 24 is operative to further condense and compact the yarn and to guide it from the presser head onto the bobbin.

In the flyer top 11 is the usual vertical top roving hole 25 and notches 26 are provided therein.

In use, roving passes through the hole, 25 in the flyer top, out through the aperture 12, down the hollow leg 13, around the presser arm 15 several turns, through the two holes 19, 20, in the presser head 16 and then onto a bobbin (not shown). The impedance formations consist, in the example described, in the edges of the holes 19, 20, where the yarn passes thereover in frictional contact. Thus, with the two holes 19, 20, there are four points of impedance.

It is to be noted that as the roving or yarn passes through the constrictions 23 on the back or outside of the presser and, 24 on the front or inside face of the presser, the yarn is compacted and any tendency to spread is counteracted, whilst in any particular construction the distance between any two points of impedance or impedance formations must be less than the staple length of the fibres used, as also must be the distance between the last impedance formation and the point of winding on the bobbin.

The notches 26 in the flyer top work in conjunction with the presser to reduce roving breakages because of the jerking effect imparted to the yarn as it passes thereover, and thus maintain a more uniform roving as it passes down the hollow tube 13 to the presser, so producing a denser package or bobbin.

I claim:

A presser for a textile spinning machine comprising a vertical arm, pivots mounting said vertical arm on a conventional flyer whereby it can swing to and from a package whereon yarn is wound, a horizontal arm at the lower end of said vertical arm, a presser head on the end of said horizontal arm and remote from said vertical arm and constituting a continuation of said horizontal arm, two holes in said presser whose centers are on the line of the axis of. the horizontal arm, the hole nearer said horizontal arm having a slot-like opening below said horizontal arm, the other hole having an opening on the top of said presser, a tapered groove extending between said holes in the outside face of said head and aligned with the centers of said two holes, a second tapered groove on the inside face of said head and extending forwardly from said other hole toward the end'of said head whereby the yarn can be brought down the fiyer and twisted round said horizontal arm and through said holes and leave said head by the second groove as it is wound on said package.

UNITED STATES PATENTS Martin et a1. Aug. 1,

Martin Feb. 23,

Burlin July 14,

Noguera July 13,

FOREIGN PATENTS Great Britain Apr. 2,

Images