US1590169A - Tuft-yarn carrier for looms - Google Patents

Description

Juhe 22,1926. v 1,590,169

w. BI XBY ET AL TUFT YARN CARRIER FOR LOK JM S Filed Feb. 27, 1926 2 Sheets-Sheet 1 lvvm'" BY W %w/1/Ww/Anamm June 22,1926. 1,590,169

w. BIXBY ET AL TUFT YARN CARRIER FOR LOOMS Filed Feb. 27, 1926 2 sheets shet 2 INKENTORS B? M K C ea 7 J WWTTORNE Patented June 22, 1926.

UNITED STATES PATIENT OFFICE.

WALTER BIXBY, OF BOSTON, AND CHARLES LEA, OF MILTON, MASSACHUSETTS, AS-

SIGNORS TO SHAWMUT ENGINEERING COMPANY, OF BOSTON, MASSACHUSETTS, A

CORPORATION OF MASSACHUSETTS,

TUFT-YARN CARRIER FOR LOOMS.

Application filed February 27, 1926.

This invention relates to pile fabric weaving in which the pile is formed by the insertion of rows of yarn tufts in the fabricduring the weaving operation, and it has particular reference to that class of tuftweaving looms in which the tuft yarn frames, instead of being transferred from their carrier-chain to deliver yarn directly to the fabric, remain in the chain or sup- )ortin carrier while arn-transferrin and inserting devices, in the form of nippers or otherwise, are employed to remove tufts of yarn from the tuft-yarn frames for insertion into the fabric being woven.

It is the object of the present invention to provide an improved tuft-yarncarrier of this type which shall be simple in its construction, cheap to manufacture and at the same time making provision for convenient replacement of such parts as may become accidentally injured or deformed while in service. In general the improvement comprises a suitable carrier frame provided with a longitudinal yarn-positioning and spacing member, in combination with a series of transverse guides which are reliably mounted beneath the yarn-positioning member to separate the individual yarn tufts and also provide removable guides for the nippers or yarn-transferring devices. These and other features of the invention will be explained in the following specification and will be defined in the claims hereto annexed.

In the accompanying drawings several forms of embodying the principles of this invention are illustrated, in which:

Figure 1 is a front elevation of a car rier-frame containing this improvement.

Figure 2 is a cross sectional view thereof.

Figure 3 is a detail perspective view showing the underside of a portion of the yarnpositioning and spacing means.

Figure 4 is a detail showing, in perspective, one of the removableyarn-separating guides.

Figure 5 is a perspective view from above of a portion of the yarn-positioning member showing one means of retaining the guidelocking rod in position.

Figure 6 is a front elevationshowing a ing, respectively, afront elevation and a Serial No. 91,231.

and also having intermediate spool-bearing brackets 5 equipped with self-locking latches 6 of a well-known type which form no part of the present invention. a

The yarn-positioning and spacing memher, in this form, comprises a longitudinal plate or'strip 10, preferably of pressed metal, provided with a depending front flange 10 having guide-receiving apertures or slots- 1O regularly spaced apart andregistering with apertures 10", in the rear depending flange 10. I

A series of transverse guides" comprising, in this case, a thin plate 12, formed at one end with a tenon 12 and at the other end with open notch or recess 12 are so dimensioned as to be insertable through the slots in the rear flange 10, and have their tenons project-through the forward row of slots 10 The notches 12* are made of sulficient depth so that they extend some distance inside of the rear flange 10 in order to permit the insertion of a longitudinal 1 locking rod 1.3, through the slots and inside the threading needle y of the threading machines, which are used to draw the tuft-yarns through the positioning member, from catching against the edge of the yarn aperture.

These yarn-positioning membersshould be secured to the carrier-frame with great precision. Furthermore, as itv will be of advantage to be able to change the pitch or spacing of the guides as a greater or less number of tuft-yarns to the inch are tobe employed, we have made provision for interchangeably securing different yarn-positioning and guiding means tothe same carrier-frame.

In the present case this is accomplished by providing, at suitable intervals along the rear of the member 10, a series of apertures whose edges are upset, as shown at 15,.which exactly register with openings or recesses in the bottom of the longitudinal carrier-bar. Vertical attaching bolts, 16 are inserted from the bottom through these upset apertures and are engaged, at their upper ends, by locking nuts 16, by which the plates .10 are rigidly and accurately secured in proper position on the carrier-frame, while making it possible to quickly substitute yarn-positioning members of different pitch, thereby effecting a very great saving in equipment by avoiding the necessity of snpplyingqa complete tuft-yarn frame to accommodate clifferent kinds of Work. V o

It will be understoodthat the particular form of the yarn-positioning and nipperguiding members may be subject to considerable variation while stillretainingthe principle above explained. In Figures 6, 7 and 8we have illustrated, a modified form in which the yarn-positioning and spacing member 20 still consists of a longitudinal sheet or plate secured to the underside of the carrier-bar 1, by the above-described means or any other suitable means,-and is provided with a longitudinal front flange 22 and a longitudinal rear flange 23.

7 of the guide is prevented by a longitudinal looking bar 24: insertedin the rear flange, as shown in Flgure 8 which, while in place, prevents rearward movement through the vertical slots 1n the flange 23.

A needle protecting rod orwire 21, simi-- lar to the one previously described, extends along the frontedges of the apertures 20 through which the spool pass. 7 Figures 9 yarn-tufts m from the and 10 show a further modification in which the yarn-positioning plate The. former has its extreme edge portion bent or strip 30 has a downwardly extending fore, the guides 25 are inserted through 1 slots in'the rear flange 33 and its lip 33, but the locking-bar 34: is inserted in the rear flange on the outside instead of in the inside, as inthe other forms described. The

front. lip 32 prevents forward movement of the guides 25, while the locking-bar 34, retained inplace by the lip 33 serves as a positive stop against rearwardomovement of the guides until the bar is withdrawn to permit replacement of any of the guides that may be injured.

Instead, of providing a separate needledeflecting member, as in the forms previously described, the forward edge portion-of the yarn-positioning member 30 may be struck up. to form a longitudinal lip immediately in front of the yarn-positioning apertures to prevent the barb or hook of the needle from catching on its retracting movement.

To prevent any accidental displacement of the looking or retaining member 13,

means may be provided at the end of the positioning member. to'prevent longitudinal movement thereof after it is inserted. Any

suitable means may be employed for this purpose, butin Figure 5 we have'shown the rear flange 10 provided with a short extension 16 which is turned inwardly so as to overlap aportion of the end of the rod 13, just far enough to prevent endwise movement thereof, while allowing the lip 16 to be sprung outwardly to allow the bar to be withdrawn.

The side flanges, in conjunction with the transverse guides, form enclosing pockets around the individual yarn tufts, while affording access to' the yarn on the part of the outwardly moving nippers in order to grip the depending ends of the yarn tufts to transfer them, when severed, to the fabric. V v I To provide means for preventing the accidental retraction or slipping back of the end of the yarn tufts through the positioningholes 11, we prefer, instead of making a clean cut hole, to upset the metal so as to form a slightly converging'lip or burr, as shown at 10", leaving the rough or unpolished lower edge to frictionally engage the yarn tuft and thus retain it against backward slip.

What we claim is: 1. In a yarn carrier for tuft weaving, the

combination with a spool-supporting frame,

means for positioningthe yarn tufts in spaced relation along the front of the frame, a plurality of yarn-separating guides detachably mounted beneath said positioning llil means to separate the individual yarn tufts and guide the yarn-transferring means, and means for relatively retaining said guides against accidental displacement.

2. In a yarn carrier for tuft weaving, the combination with a spool-supporting frame embracing a longitudinal carrier-bar and its suspension members, of a'longitudinal yarnpositioning plate having spaced perforations for the passage of the individual yarn tufts secured to said carrier-bar, said plate being provided with guide receiving apertures and a series of transverse guides removably mounted in said apertures, and means for positively retaining the guides therein While permitting them to be withdrawn at will.

3. In a yarn carrier for tuft weaving, the combination with a longitudinal carrierbar, of a yarn-positioning plate provided with front and rear longitudinal flanges provided with registering apertures, a series of transverse guides inserted in each pair of registering apertures and a removable bar arranged to lock said guides against removal.

4. A yarn-positioning and separating member for a tuft yarn frame, embracing a longitudinal strip formed with depending front and rear flanges and having a series of spaced yarn-receiving and positioning apertures and a series of transverse yarnseparating guides arranged to form guides for yarn-transferring means when gripping the yarn.

5. A yarn-positioning and separating member for a tuft yarn frame, embracing an inverted trough-like member and a series of separate removable transverse division plates inserted in registering slots formed in the opposite sides of the trough and removable means for releasably retaining said plates against withdrawal, the upturned bottom of the trough being formed with spaced apertures for the passage of the yarn tufts.

6. A yarn-positioning and separating member for a tuft-yarn frame, embracing a perforated top member having longitudinal flanges each having guide-receiving slots in registry with slots in the other, a series of transverse guides inserted in the registering slots, a portion of one flange serving as an abutment preventing escape of the guides on one side and a removable stop serving, when 1n position, to prevent their escape on the other side. y

7. In a tuft yarn carrier for a loom, the

combination with a longitudinal carrier-bar, a yarn-positioning and separating member detachably secured thereto and comprising a longitudinal plate provided with spaced perforations for passage of the individual yarn tufts, and having opposite side flanges and a series of transverse guides mounted in said side flanges, substantially as described.

8. In a tuft yarn carrier for a loom, the combination with a longitudinal tubular carrier-bar, of a yarn positioning member comprising a longitudinal plate arranged to overlap the bottom of said carrier-bar and provided with spaced perforations for yarn, attaching bolts passed through regi tering apertures in the top and. bottom of said carrier-bar and in the longitudinal plate, and transverse guides mounted beneath said plate in position to guide yarntransferring means.

9. A yarn-positioning and separating member for a tuft yarn carrier, embracing in its construction a longitudinal plate having spaced perforations for the passage of individual yarn tufts and provided with front and rear longitudinal depending flanges, and a series of transverse guides extending across the bottom of said plate from one flange to the other to form shallow elongaited pockets around the individual yarn tu ts.

10. A yarn-positioning and separating member for a tuft yarn carrier, embracing in its construction a longitudinal plate hav ing spaced perforations for the passage of individual yarn tufts, the edge of each of said perforations being formed into a projecting lipadapted to embrace the inserted yarn tuft and revent its accidental withdrawal from tlie positioning perforation, substantially as described.

In witness whereof, we have subscribed the above specification.

WALTER BIXBY. CHARLES LEA.

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