US2057394A - Axminster loom - Google Patents

Description

w. w. ROBERTSON AXMINSTER LOOM Filed Dec. 16, 1935 5 Sheets-Sheet 1 Inventor William W. Robertson Attorneys Oct. 13, 1936. w. w. ROBERTSON AXMINSTEYR LOOM 3 Sheets-Sheet 2 tson -Wi iam W. obev *M Attnrnevs Filed Dec. 16, 1935 Oci. 13, 1936. w. w. ROBERTSON AAAAAAAAAA 00M Filed Dec. 1 1935 IEIIIHHI 55 1 15, 60 um'li' "tu I lnvento W Hi W. Roberts M Y 7w 1 Attorneys.

Patented Oct. 13, 1936 PATENT OFFICE AXIMINSTER LOOM William W. Robertson,

signor to Crompton &

Northboro, Mass., as- Knowles Loom Works,

Worcester, Mass, a corporation of Massachusetts Application December 16,

1935, Serial No. 54,650

11 Claims. (Cl. 139-9) This invention relates to improvements in AX- minster looms and it is the general object of the invention to provide an improved control motion for tuft yarn guide plates.

This application is a continuation'in part of application Serial No. 688,308, filed by me Septemher 6, 1933. l

In Patent No. 1,958,129 issued on an application filed by Dacey'and myself and copending with application Ser. No. 688,308 there is shown a series of guide plates mounted in front of the reed and below the nose board together with control mechanism to project the plates rearwardly into substantial alignment with the reed dents so that the tuft yarns extending from the tube frame can be guided into .the reed spaces during the tuft forming operation. In that application the plates and'the frame which carries them are mounted to swing about a single center, requiring a close setting to place the plates low enough to clear the weft laying needle without losing their alignment with the fingers of the nose board.

It is an important object of my present invention to provide a control for the plates'which will modify the simple arcuate motion of the structure shown in said application so that during the first part of :their rearward movement the plates. are sufliciently high to guarantee registry with the nose board, but during thelatter part of the movement they will move the needle. This general result can be accomplished by the mechanism set forth hereinafter, including twocenters; about each of which the plates may move.- The first of the centers may be so located as to give the plates a rising motion at the beginning of the rearward stroke, while the second is, so located as to cause the plates to move in a path lower than that along which they would have traveled had they continued to move aboutthe first center. This result I may accomplish by placing the second-center infront of the first,'but I do not wish to be limited to this construction. 7 Y

With these and other objects in view which will, appear as the description proceeds; my in vention resides in the combination and arrangement-of-parts hereinafter described and set forth.

In the accompanying'drawings, wherein a convenient embodiment of my invention is set forth, 7 Fig. 1 is a vertical" longitudinal section of an Axminster 'loom having-my invention applied zth e Qfii I ';i J 1 Fig; 2 ,s a view" similar to a portion of Fig. 1 on an enlarged scale showing the reed in forward position; A it 1 a 1 -30 to move the Fig. 3 is a view similar to Fig. 2'but with the parts in different position and indicating in dotted lines how the guide plates effect their downward movement, 7

V Fig. 4 is a front elevation taken in the direction of arrow 4, Fig. 2, and

Fig. 5 is a horizontal section on Fig. 2.

Referring particularly to Fig. 1, the loom frame I!) is provided with a breast beam H for the cloth C. A transporting chain l2-- brings a series of tube frames to delivery position one at a time, one of said tube frames being indicated at 13. Transfer mechanism indicated generally at M operates first to disconnect a tube frame from the chain by pivotal movement of a lever 15 about a center If, after which the lever II which supports the center [6 maybe lowered about center 18. 'The tube frame hasyarn. tubes [9 from which project the tuft forming yarns'Y. Mechanism not shown herein but substantially the same asset forth in the aforesaid application may be employed to rock the tube frame so as to wipe the color yarns into position between the binder threads B and B. Y

- Front and back cutters 2n and 2l,,respectively, operate to sever the tufts from the tube frame after the latter has been raised in thepulling-off operation. The lay is provided with a series of reed dents 26 and-is supported on a lever 21 oscillatable about a shaft 28 supported by the loom frame. Alink 29 is connected to the lower end of thelever 21 and is operated by cam points reed back and forth. A nose board 32 .is provided with a series of separated rearwardly projecting teeth 33 each having a hook 34 and a rear inclined yarn manipulating surface 35. The matter thus far described may operate substantially as is common in the usual Axminster loom, or as set forth in the aforesaid line 5-5 of patent.

My invention relates to devices which align the tuft yarns with the spaces between the reed dents and is illustrated herein in connection with guide plates 40 mounted on a bar 4| which as shown more particularly in Figs. 2 and 3 is carried'at the upper end of a support 42. Operating links 43 are pivotally connected asat M to this support andare actuated by arms 45 on a shaft 46 turning in fixed bearings. A link 41 rev :ciprocated by cam 48 and-lever 49 therefore is operatively related to the shaft and rocks it to raise the links. I

The support is bolted as at 50 to levers 5| each of which is pivoted to a stud 52 carried by a lever 55 mounted for engagement with a surface 56 concentric with the lay axis 28. be part of the hub and mounted independently of the lay, although the relation between the lay axis and pivots 54 remains constant. The levers 5| are all actuated by cam 48 and arranged across the length of the loom.

Each lever 5| has a lug 6| through which passes a bolt 60,

sponding lever 53. for each bolt and lies between lug 63 and nuts 65 on the bolt. A stop finger 66 on lug 6| is normally held against a second stop finger 61 on lug 63 by expansion of spring 62. These fingers can be filed to eifect desired adjustment.

When in normal spaces.

The operation of the tube frame and lay and other parts direction,

curs, they will move as a unit about the axes 54,

hold lever 49 against As will be understood from Figs. 2 and 3 70 is optional.

I have set forth herein only enough matter to show how the plates can nism can be controlled as desired, for instance, as in the aforesaid application.

From the foregoing it will be seen that I have provided simple and eflicient means for giving the of the other.

Having thus described my invention it will be seen that changes and modifications may be tion and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In an Axminster loom operating with a reed in a direction to prevent said plates from entering the shed.

2. In an Axminster loom operating with a reed, a set with respect to the latter,

their rearward to move downeffective as the plates continue movement to cause said plates wardly.

6. In an Axminster loom having a nose board and effective to give said plates a general downward movement to clear the weft laying mechanism.

'7. In an Axminster loom operating with a reed and having a nose board and weft laying mechanism, a set of yarn guiding plates normally in forward position and held by the nose board in alignment with the reed, means defining two separate centers about each of which said plates are movable toward the reed, and means tocause said plates to move first about one and then the other of said centers.

8. In an Axminster loom operating with a reed and having a nose board and weft laying mechanism, a set of yarn gui 'ng plates normally in forward position and held by the nose board in alignment with the reed, means to give said plates two characters of motion toward the reed, the first being an upward and rearward movement to preserve alignment with the nose board,

and the second being a rearward and downward movement away from the weft laying mechanism.

9. In an Axminster loom operating with a reed and having warp threads to define a shed, a set of guide plates for the yarn normally in forward position, means to give said plates an initial rearward movement toward which enters the shed, and means to alter the latter part of the motion of said plates to cause the same to move along a path below the first path to keep said plates from entering substantially into the shed. 10. In an Axminster loom, a reed, tuft yarn guide plates, a tube frame having tuft tubes movable to positions between the plates to place tuft yarns between the plates, weft laying mechanism to lay weft behind the tube frame, and means to move the plates along two paths, one toward the tube frame and the other away from the weft laying mechanism.

11. In an Axminster loom operating with a reed and having warp threads to define a shed, a tube frame having yarn tubes, 9. set of yarn guiding plates under the warp threads spaced to receive the yarn tubes between them, and means to move said plates rearwardly toward the reed along two arcuate paths, the first of which when projected enters the shed, and the second of which lies below the first path.

WILLIAM W. ROBERTSON.

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