US1687467A - Automatically-threading loom shuttle - Google Patents

Description

Oct. 9, 1928.

W. l. STIMPSON AUTOMATICALLY THREADING LOOM SHUTTLE J12 V811 1 01 I Filed Nov. 29, 1927 AfOI'JI V 6 H n V Patented Oct. 9, 1928.

UNITED STATES WALLACE I. STIMIPSON, F HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DBAPER COB- I 1,687,467 PATENT OFFICE.

PORATION, 0E HOPED'ALE,. MASSACHUSETTS, A CORPORATION OF MAINE.

. AUTOMATICALLY-THREADING 'LOOM SHUTTLE.

Applioatiim filed November This invention relates to automatically threading loom shuttles and is more particularly directed to means for controlling the yarn as it is withdrawn from the shuttle.

It has been proposed to control the delivery,

of the thread or filling from the shuttle by securing bristles or brushes in the bobbin chamber which bear upon the filling or engage the bobbin itself. In some cases, however,

the filling becomes entangled with the bristles or brushes to such an extent that it is liable to be broken, and this is especially so in cases where the filling is of light count or of kinky tofore to secure to the sides of the bobbin chamber a piece of fabric so that as the filling unwinds from the bobbinits outward swirling movement will'carry it into contact with the fabric and to an extent control the delivery of the thread from the shuttle. Where fabric is employed for this purpose, the unwinding yarn has to bear the burden of displacing the fabric, especially where it is in contact with the end portion of the bobbin, and in certain classes of yarn this is frequently the cause of thread breakage.

The object of the present invention is to provide an unwinding yarn engaging controller formed of soft independently yieldable fibres which extend from the material to which they are attached and bear upon the under side of the conical endwinds and also the tip of the bobbin, the effect being that while the soft yielding fibres, such, for instance, as project from the skin of animals, as sheep-skin and the like, may effect a proper control of the yarn as it unwinds, the fibre itself will individually yield to the passage of the yarn or thread, and, at the same time close the opening about the tip portion of the bob bin, so that in case of an overthrow or slack thread, the thread itself will not fall through the opening in the shuttle and be caught between the bottom of the shuttle and shuttle race.

An important feature of the present invention consists in providing an unwinding yarn engaging controller about the tip end portion of the bobbin, formed of individually loose and yielding skin fibres which may yield to the passage of the yarn and yet prevent the yarn from passing to the bottom portion of the shuttle to be subsequently broken.

The invention and novel features thereof 29, 1927. Serial no. 236,434.

will best be. made cle r from the following description and the pzcompanying drawings of one good form thereof.

In the drawings:

1 's a top plan view of a shuttle contaming the present invention;

Fig. 2 is a bottom view showing the loose, anlmal fibres, disposed below and about the end of the bobbin;

Fig. '3is a detached view of the controller, showing the loose fibres extending from the backing towards each other and forming a seat of individual loose fibres for theend of the bobbin; and

Fig. 4 is a section on the line 4-4 of Fig. 1. The shuttle 1 is of the replenishing type wherein the filling carrier or bobbin is held in the bobbin chamber 2 by means of the usual yielding bobbin holding aws 3. Frontward of the bobbin chamber is the side delivery eye 4 and between the side delivery eye and the bobbin chamber is the longitudinally extending threading passage 5.

Secured in the'bobbin chamber of the shuttle is the unwinding yarnengaging controller which is constituted by loose, individually yieldable fibrous material such as is found on the skin of animals, sheep-skin, for instance, although, of course, any other character of individually yieldable fibrous material could be advantageously used within the purport of the present invention.

The bobbin 6 has its tip end portion adjacent the entrance to the longitudinally extending threading passage 5, as usual, and secured to the side and end walls of the bobbin chamber is the strip of material 7 from which project the loose individually yieldable fibres or hair 8.

The strip of material from which the fibres project may be advantageously formed of animal skin, such as sheep-skin or the like, having the animal fibres or wool extending therefrom. The skin or other material 7 may be secured to the walls of the bobbin chamber by various means but in. the present instance of the invention the side and end walls of the bobbin chamber have a countersink 9 of sufficient depth to accommodate the thickness of the skin 7 which is seated therein and preferably secured in place by an adhesive. The particular means for securing the skin to the walls of the bobbin chamber is, of course, not material.

When the animal skin 7 is secured in the bobbin chamber, the individually yieldable fibres 8 thereof extend inwardly of the bobbin chamber and engage the under side of the end conical winds 10, as more clearly indicatcd in Figs. 1 and 4, and since the individually yieldable fibres extend from all parts of the skin or material 7 when in place, a seat 11 is formed of the yielding fibre or wool, as the case may be, in which the end of the bobbin may rest during weaving.

It will be noted that the fibre 8 of the skin or material 7 completely closes the opening through the shuttle about the tip end of the bobbin, with the result that on the occurrence of an overthrow or slack yarn during weaving, the yarn will be prevented from dropping through the shuttle on to the race where it might be broken on the next pick.

The individually soft yieldable character of the skin fibre or wool, in case sheep-skin is used, permits the yarn to be withdrawn from the bobbin without danger of entanglement with the controller itself, as is liable to happen where bristles are employed, and likewise this characteristic individual yieldability of the fibre or wool obviates the necessity of the displacement of the entire body of the controller, as is frequently the case Where fabric of some sort is employed.

When replenishment of filling occurs, the individually yieldable nature of the fibres 8 permits the bobbin to pass downwardly through the fibres without displacng the entire body of the controller itself, and the elasticity inherently present in such fibres returns them to their original position beneath the end portion of the incoming filling carrier or bobbin, as indicated in Fig. 4, so that during weaving, the end of the bobbin rests in a seat of the soft, individually yieldable fibres which not only impart to the yarn the desired tensioning eifect, but prevent the undesirable occurrence of breaks in the filling or thread during weaving.

What is claimed is:

An automatically threading loom shuttle having a bobbin chamber, the end and side walls of which adjacent the delivery end of the shuttle are provided with a continuous countersink, a side delivery eye, and a longitudinally extending threading passa e, and an unwinding yarn engaging control er constituted as a strip of animal skin seated and secured-in. the continuous countersink of the end and side Walls of the bobbin chamber and having loose individual fibres which extend from the countersunk skin inwardly of the bobbin chamber and bear upon the under portion of the conical winds of thread and the end of the bobbin and form an individual yielding fibrous seat in which the end of the bobbin rests during weaving.

In testimony whereof, I have signed my name to this specification.

WALLACE I. STIMPSON.

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