US2420952A

US2420952A - Loom selvage needle

Info

Publication number: US2420952A
Application number: US580312A
Authority: US
Inventors: Barbara O W Hoeber; William T Read
Original assignee: TEXTILE RES CO
Current assignee: TEXTILE RES CO; TEXTILE RESEARCH Co
Priority date: 1945-03-01
Filing date: 1945-03-01
Publication date: 1947-05-20
Anticipated expiration: 1964-05-20

Description

-May 26, E947. H. Hoi-:BER

LOOM SELVAGE NEEDLE Filed March l, 1945 2 Sheets-Sheetv l INVENTOR Q/Ov'O/oeew' ATTORNEYS :man Z? 3947. H, HOEBER ZZg LOOM SELVAGE NEEDLE Filed March l, 1945 2 Sheets-Sheet. 2

Patented May 20, 1947'A LooMsELvAGE NEEDLE Harold Hoeber, South Dartmouth, Mass.; Barbara 0. W. Hoeber and William T. Read, `executors of said Hamid Hoeber, deceased, asslgnors to Textileltesearch Co., a corporation of Massachusetts Application Maren 1, 194s; serial No. 580,312

(ci. 13a- 195) 8 Claims. i

This invention relates to a loom and more particularly to a needle for engaging the selvage of the fabric adjacent the fell of the cloth.

Inthe operation of a loom it is usual to set the temples at either edge of the cloth as close to the fell as practicable' so as to hold the selvages. When a strong filling tension occurs it is very difficult vto hold the selvages'out to the full width s othat puckering will not occur and frequently a selvage needle is employed upon which the filling thread loops so that this needle will hold the tension of the filling as it is laid into the shed. Such a needle usually extends rearwardly toward the reed. When the lay beats up the filling it is necessary that this needle be withdrawn from filling holding position and in the usual construction of loom the needle is lifted out of the selvage by swinging about an axis parallel to the lay and then moved-backwardly away from the reed as the beat up occurs. Some part carried by the lay usually causes such actuation of the needle. Frequently this needle may fail to be withdrawn in-which event .the needle and reed come together causing a smashing of the reed and the needle, and as the pointof the needle extends toward the reed and the movement of this needle is in an arcuate fashion toward and from the reed severe damage occurs.

One of the objects of this invention is to provide a needle so that a iiat straight selvage on the fabric may be had.

Another object of this invention is to provide a needle which will swing in a plane parallel to the plane of the reed when beat up occurs so that should any accidental fault occur whereby the needle is not Withdrawn the broad side of the needle will be engaged by the reed rather than the point of the needle to drive itself into the reed.

Another object of this invention is to provide a mounting of a needle whihwill not require loom temples to be movedfaway from the fell of the cloth for the mounting of the needle in position, but rather the loom temples may be adjusted as close to the fell of the cloth as vention 'consists of certain novel features of construction, as will be more fully described and.

particularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is a perspective view of a fragmental portion of a .loom illustrating my needle in position;

Fig. 2 is a perspective view showing a fragmental portion of a loom looking at the other side of the needle from that shown in Fig. 1;

Fig. 3 isa top plan view of the loom temple with my needle mounted thereon;

Fig. 4 is a face view of the needle showing in dot-dash lines another position thereof;

Fig. 5 is a diagrammatic view illustrating the iilling as passing about the needle in the selvage of the cloth;

Fig. 6 is a view similar to Fig. 5 but on a larger scale; l

Figs. 7, 8, and 9 are diagrammatic elevations showing the loom reed, the fabric, the shed and vthe needle, in different positions to show the previously while still permitting mounting of the loom needle in position.

Another object of this invention is to so mount the loom needle that it may be adjusted for different widths of cloth and also adjusted as to its position in front of the loom temple.

Another object of this invention is to so swing the needle that it will easily moveto or from a position in the selvage of the cloth. Y

With these and other objects in view, the 1nworking arrangement of the needle and the reed v in different positions of the reed with reference to the fell ofthe cloth;

Fig. 10 is an elevation of the needle shown as provided with a covering of softer material.

Fig. 11 is a view similar to Fig. 10 showing a modified form of needle.

In proceeding with this invention I mount a flat arcuate needle on the end of a pin which is both slidably and rotatably mounted in a bear.. ing provided lon the loom temple. An arm extends from the pin so that when a cam surface which I mount upon the cap bar of the lay engages the arm it will first rotate the pin to withdraw the needle from the fabric, and then will 'slide the pin axially to movethe needle away from the reed as the beat up occurs. This occurs at both selvage edges of the fabric at each beat up of the'lay.

With reference to the drawings lll designates the breast beam of a loom having a, temple designated generally II mounted thereon by the adl justable gib I2 and slide I3, while forward and rearward adjustment may occur by reason of the slot I4 and the screw I5 which pass therethrough. The temple rolls are mounted on axis I6, and l1, while the cap I8 of the temple is provided with a tongue or gib I9 for slidably mounting the block 20. This block may be secured through slots 2| by screws 22 engaging the cap IB. This block carries a bearing 23 for rotatably and slidably mounting a pin 24 which has a needle 25 having flat back and front surfaces xed to one end of the pin while a spring 2l acts between the needle and the rearward end of the bearing 28 tending to slide the pin axially ofthe bearing until the hub 21-of the actuating arm 28. which is nxed on the pin, engages the shoulder 28' of the bearing 2l. A spring Il encircles the pin 24 and is secured to a collar 3l which is fast upon the pin by a set screw I2. The other end 84 of this spring 80 engages some fixed part so as to tend to rotate the pin until the arm 28 or its hub engages the stop 28 to limit the rotation of the pin and position the arm 28 upright. By loosening the set screw l2 and rotating the collar 8i on the pin 24 the tension of the spring may be adjusted.

The fabric 2li is fragmentaily shown in Fig. 1 with the warp threads Il extending through the reed Il which is mounted upon the lay 38. 'I'he shuttle I8 is shown in its box i8. Cap bar 4i is provided with a track member 42 for mounting the bracket 48 adjustably thereaiong by means of bolt 44. This bracket 43 supports a cam sur.

face 46 so located that it will engage the arm 28 and rock thepin 24 clockwise as shown in Fig. 1 or counterclockwise as shown in Fig. 2 so as to swing the needle 2E about the axis of this pin as a center to withdraw it from the warp thread at a location closely adjacent the fell 46 of the cloth. The cam surface is such that after rocking the pin 24 so as to cause this withdrawal, the pin 24 will be slid axially through the bearing 2l to slide the iiat surface of the needle 25 toward the L-shaped arm 41 of the cap I8 of the temple as shown in dotted lines at 48. This L-shapedarm portion 41 of the cap may be recessed as at 41 at this point suilicient to wholly receive the thickness of the needle 28 plus some clearances. As the arm 28 reaches the end of the cam 45 it engages the end of bolt 48 which extends outward beyond the surface 48 and may be adjusted. A stop 49' will prevent arm 28 from dlsengaging the end of bolt 49. When arm 28 is engaging arm 48 further movement of the lay pushes arm 28 back and the needle with it to insure clearance of the needle and reed.

The outer edge of arcuate portion 50 of the needle 2l (see Fig. 4) is `,concentric with the axis of the pin 24 so that as the needle swings about the axis of pin 24 as a center no strain will be brought upon the warp threads as the withdrawal of the needle occurs.

As the lay 38 swings away after beating up a pick such for instance as the pick shown in Fig. 5, the needle 25 iirst slides forward under action of its spring 28 and then as the cam 45 moves away from engagement with the arm 28 spring 3|) swings the pin to swing the needle 25 so that it moves just inside of the outer warp i2 of the fabric being woven as shown in Fig. 5. The shuttle then'passes across through the shed to lay the pick 58 which extends around the needle 25 (see Fig. 5) and this needle withstands the tension or pull on the selvage which is exerted by the laying in of the filling 53. This tension can be very substantial especially if there is a warped bobbin in the shuttle. l

In some cases instead of the needle being positioned within the outer selvage warp l2 (see Fig. 5) the needle may be positioned outside of this selvage so that loops 88 are provided (see Fig. 6). In this case the needle will be positioned as shown at 28 just outside of a previously laid lling I8 so that the next laid filling Il will loop about this needle and will provide a construction which will be especially adapted for knitting a portion to the selvage where desired. After the filling has been laid the harness is changed to lock this lining in position and the beat up then occurs. 'I'he cam surface may be set to withdraw the needle at any time after the filling has been laid across the warp. Y

The condition just described is shown schematically in Fig. '7 and immediately that the lling 8l has been laid in,` the reed moves forwardly to beat up this filling. the needle 2l is withdrawn from the position shown in Fig. 'l to the position shown in Fig. 8 at the time that the beat up has completed its stroke. Thenthe needle 2t again descends into position as the reed Si moves away and the shuttle 28 is then passed across the shed to position another lling.

In some cases it may be advantageous to cover the needle with a jacket 80 (Fig. 10) of softer material such as leather to cushion contact with it.

In some cases cloth will contract widthwise after standing idle over a weekend to such an extent that the needle will not engage the selvage warp thread and trap the filling. Accordingly, I may provide a needle 25' in Fig. l1 having an additional prong or end 62 spaced inwardly of the primary prong 6i as shown in Fig. 11 which will enter the warp and trap the filling even though considerable contraction takes place.

I claim:

l. In a loom, a selvage needle comprising a body extending generally in a plane parallel to the plane of the reed into the warp threads and presenting a surface throughout its extent parallel to the plane of the reed when adjacent the fell of the fabric, and means for withdrawing the needle from the warp threads substantially in a plane parallel to the reed.

2. Ina loom, a selvage needle comprising a body extending generally in ya plane parallel to the plane of the reed into the warp threads and presenting a surface throughout its extent parallel to the plane of the reed when adjacent the fell of the fabric, and means for pivoting said needle for swinging movement about said pivot means for withdrawing the needle from the warp threads substantially in a plane parallel to the reed.

3. In a loom, a selvage needle comprising a body extending generally in a plane parallel to the plane of the reed into the warp threads and presenting a surface throughout its extent parallel to the plane of the reed when adjacent the fell of the fabric, and means for withdrawing the needle from the warp threads substantially in a plane parallel to the reed and subsequently moving the needle away from the reed.

4. In a loom, a selvage needle comprising a body extending generally in a plane parallel to the plane of the reed into the warp threads and presenting a surface throughout its extent parallel to the plane vof the reed when adjacent the fell of the fabric, and means for pivoting said needle for swinging movement about said pivot means for withdrawing the needle from the warp threads substantially in a plane parallel to the reed and subsequently moving the needle away from the reed.

5. In a loom, a selvage needle comprising a body extending generally in a plane parallel to the plane of the reed into the warp threads and presenting a surface throughout its extent parallel to the plane of the reed when adjacent the fell of the fabric, and means for pivoting said needle for swinging movement about said pivot means for withdrawing the needle from the warp threads substantially in a plane parallel to the reed. said needle being of arcuate shape about the pivot means as a center of said arc.

6. In a loom, a selvage needle comprising a body extending generally in a plane parallel to the plane of the reed into the warp threads and presenting a surface throughout its extent parallel to the plane of the reed when adjacent the fell of the fabric. means for movably mounting said needle means for withdrawing the needle from the warp threads substantially in a plane parallel to the reed and subsequently moving the needle away from the reed, said mounting means having a recess therein for receiving said needle vwhen moved away from the reed.

7. In a loom having a lay and reed carried thereby and a temple to grip the fabric adjacent the fell, a pin bearing mounted on said temple with its axis extending substantially perpendicular to the reed when in position against the fell of the fabric, a pin rotatably mounted in said bearing, a needle on the end of said pin extending into the warp and having its end portion in generalLv arcuate shape about the axis of the pin as a center and wholly located generally in a plane at substantially right angles to the axis of the pin, and means on said lay for actuating said pin to move the needle out of the selvage warp as the reed beats up the filling.

8. In' a loom having a lay and reed carried thereby and a temple to grip the fabric adjacent the fe11,'a pin bearing mounted on said temple with its axis` extending substantially perpendicular to the reed when in position against the fell of the fabric, a pin rotatably mounted in said bearing, a needle on the end of said pin extending into the warp and having its end portion in generally arcuate shape about the axis of the pin as a center and wholly' located generally in a plane at substantially right angles to the axisy of the pin, and means on said lay for actuating said pin to move the needle out of the selvage warp as the reed beats up the filling and resilient means to return said needle into the warp.

HAROLD HOEBER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS