US936445A - Center-selvage mechanism or attachment for looms. - Google Patents

Description

A. A. GORDON, Jn. GENTEE SELVAGE MEGEANISM 0E ATTACHMENT EOE Looms.

APPLICATION FILED NOV. 2B, 1908.

,n E. l c l A. A. GORDON, Jn. CENTER SBLVAGE MEGHANISM 0R ATTACHMENT ron Looms.

'APPLICATION FILED NOV. 2B, 1908.

936,445 Patented Oct. 12, 1909.

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ALBERT A. GORDON, JR., OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON 6c KNOWLES LOOM WORKS, A CORPORATION or ivrnsseorrusnrrs.

CENTER-SELVAGE MECHANISM OR ATTACHMENT FOR LOOMS.

Specification of Letters Patent.

Patented Oct. 12, 1909.

Application led November 28, 1908. Serial No. 464,882.

To all whom 'it may concern.'

Be it known that I, ALBERT A. GORDON, Jr., a citizen of the United States, residing at I/Vorcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Center-Selvage Mechanism or Attachments for Looms, of which the following is a speciflcation.

My invention relates to a center selvage mechanism, or attachment for looms, to be used in making center selvages, where two or more widths of the fabric are woven on one loom at the same time.

The object of my invention is to improve upon center selvage mechanisms as ordinarily made, and more particularly on that class of center selvage mechanism in which the needles, carrying the selvage threads, have a vertical, and a rocking or pivotal motion from side to side in a vertical plane.

In my improvements I Vprovide a center selvage mechanism in which the needles, instead of having a rocking or pivotal motion in a vertical plane, as is customary, to carry them out of a perpendicular plane, have a partial rotary motion in a horizontal plane around a lixed axis, to carry them from one position to another, without moving` them out of a perpendicular plane My invention consists in certain novel features of construction of my improvements as will be-hereinafter fully described.

I have only shown in the drawings a detached portion of a loom frame, with my improvements in center selvage mechanism combined therewith, sufcient to enable those skilled in the art to understand the construction and operation thereof.

Referring to the drawings F igure 1 is a side view of a center selvage mechanism embodying my improvements, and a lay, and harnesses shown in section, looking in the direction of arrow a, Fig. 3. Fig'. 2 corresponds to Fig. 1, but shows the lay in its rear position and the shed open. Fig. 3 is a front view of the selvage mechanism, looking in the direction of arrow Z), Fig. 1. Fig. 4 shows the parts shown in the lower portion of Fig. 2, looking in the direction of arrow c, same gure. Fig. 5 is a section, on line 5, 5, Fig. 3, looking in the direction of arrow al, same ligure. Fig. 6 is a section, on line 6, 6, Fig. 3, looking in the direction of arrow el, same gure; the broken lines show the extreme opposite positions of the arm shown by full lines. Fig. 7 is a section, on line 7, 7, Fig. 3, looking in the direction of arrow d, same ligure. Fig. 8 shows a detached piece of the fabric, having a center selvage formed by my center selvage mechanism. Y

In the accompanying drawings, 1 is the lay beam, 2 is the reed, 3 the hand-rail, 4 and 5 two vertically extending harnesses, which form the shed in the usual way.

6 and 7 are two sets of warp threads, which with the filling threads 8, Fig. 8, form the woven fabric shown in said ligure.

9 is a detached part of the loom arch.

' I will now describe my improvements.

At the rear side of the loom arch 9, at a point where it is' desired to form the center selvage 011 the fabric woven on the loom, is bolted, in this instance a downwardly extending arm or bracket 10, havinga boss 10 at its lower end. In the boss 10 is secured the upper end of a vertically extending rod 11. The lower end of the rod 11 has secured thereon a block 12. In the block 12 is secured, in this instance, the upper ends of three downwardly extending wires .13, which form guides for the warp threads 6, and 7, which form selvages.

rIhe rod 11 has loosely mounted thereon two bosses or hubs 14 and 14, on a vertically extending bar or plate 14. The lower end of the bar or plate 14 has secured thereto the upper ends of two vertically and downwardly extending needles 15. The lower end of each needle 15 has an eye 15 therein, through which passes a selvage thread 16, which leads from the fabric through a thread eye 14a, see Fig. 7, on the lower end 14 of the bar 14, and upwardly through an open eye 14h, see Fig. 4, on the upper end of the bar 14, and through a spring' actuated tension eye 14d, to two spools 17, and 17, respectively. The spools 17, and 17 are rotatably and adjustably mounted on oppositely extending rods 18 on a stand 18, which has a hub 1S", which is adjustably fastened by a set screw 18"' on the rod 11, see Fig. 5. The spools 17 and 17' for the selvage threads 1G, are provided with a suitable tension mechanism, which in this instance consists of a helically coiled expansion spring 19 encircling a rod 18' at its outer end, and bearing at one end against the outer end of the spool, and at the other end against an adjusting screw 20, see Fig. 5.

A helically coiled expansion spring 21 encircles the rod 11, and bears at one end against the boss or hub 14 on the upper end of the bar 14, and at its other end against a collar 22, adj ustably secured by a set screw 23, see Fig. 7, on the rod 11. The spring 21 acts to move the bar 14 up to its highest position, as shown in Fig. 1.

Each one of the two harnesses 4, and 5, have a hook 4', and 5', respectively. A flexible connection 24 is attached at one end to the hook 4', and in this instance is hooked through a hole 14C' in the rearwardly extending arm 14c on the bar 14, so as not to slide through said hole, and the other end of the iiexible connection 24 is attached to the hook 5', see Fig. 4. The hooks 4 and 5' are located on the harnesses 4 and 5, on opposite sides of the selvage mechanism, and at a fixed distance apart from the selvage mechanism. Each downward movement of the harnesses 4 or 5, causes the bar 14 to be drawn down, against the action of the spring 21, see Fig. 2, and also causes the bar 14 to have a partial rotary motion on the rod 11, to the left or right, shown by broken lines in Fig. 6, according to whether the harness 4, or the harness 5, is moved downwardly. The partial rotary movement of the bar 14 carries with it the vertically extending selvage needles 15, secured to the lower end of said bar, to cause the needles to change their position, relative to the warp threads passing between the guide wires 13, and to carry the selvage threads 16 irst to one side and then the other side of the selvage warp threads. The partial rotary movement of the bar 14 is limited, and can be adjusted, in this instance by two set screws 25, see Fig. 7 held in side extensions 22" on a collar 22 fast on the rod 11.

The operation of my improvements in center selvage mechanism, from the above description in connection with the drawings, will be readily understood by those skilled in the art. When the lay is in its rear position, shown in Fig. 2, the harnesses have formed the open shed, and through the connection 24 to the arm 14C on the bar 14, the bar 14, with the needles 15, is moved to its lowest position, to carry the selvage threads 16 to the lower plane ci" the warp threads; the shuttle is now thrown through the shed,

and on the forward movement of the lay, and when the harnesses change the shed, as shown 1n Fig. 1, the needle bar 14 will be raised through the action of the spring 21,

and the selvage needles 15 will come above the upper plane of the warp threads, as shown in Fig. 1. As the other harness moves downwardly, through the connection 24 to the arm 14c on the bar 14, said bar 14 will have a partial rotary movement in a horizontal plane communicated thereto, to carry the selvage threads 16 over the warp threads, to the other side of the warp threads, and on the next backward movement of the lay, when the harnesses open the shed again, the needles will be carried downwardly on the opposite sides of the warp threads, so as to have the filling laid in again, and this operation will be repeated. As the loom continues to operate, the fabric will be woven with the center selvage, as shown in Fig. 8, as will be well understood by those skilled in the art.

The advantages of my improvements will be readily appreciated by those skilled in the art.

By communicating to the needles carrying the selvage threads, a. partial rotary motion Y in a horizontal plane, to one side, and then to the other side of the warp threads, instead of a rocking motion, said' needles are always maintained in a perpendicular plane, and will raise and lower the selvage threads in a perpendicular plane, instead of in an inclined plane.

1t will be understood that the details of construction of my improvements may be varied if desired.

Having thus described my invention, what 1 claim as new and desire to secure by Letters Patent is 1. 1n a center selvage motion, a needle support carrying the selvage needles and having an up and down movement in a vertical plane, and al partial rotary movement in a horizontal plane, and means for communicating to said needle support a movement in a vertical plane, and means for communicating to said needle support a partial rotary movement in a horizontal plane.

2. In a center selvage motion, the combination with a stationary support carrying wires or guides for the warp threads which form the selvage, of a support carrying needles for the selvage threads, and means for communicating to said support carrying the needles, an up and down movement in a vertical plane on said stationary support and a partial rotary movement in a horizontal plane, and means for adjusting said rotary movement. j Y

3. 1n a center selvage motion, the combination with a stationary support, carrying wires or guides for the warp threads which form the selvage, and a. spool support secured to said stationarT support, of a supto move down said needle support and communicate a partial rotary movement in a 10 port carrying needles for the selvage threads, horizontal plane to said needle support.

said support for said selvage threads mounted on said stationary support, a spring to raise said needle support, and Connections intermediate said needle support and two shed forming harnesses, and said harnesses,

ALBERT A. GORDON, JR.

llitnesses JOHN C. DEWEY, M. HAAS.

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