US1983864A - Tube frame for axminster looms - Google Patents

Description

Dec. 11, 1934'. AW' E- MCCLEARY 1,983,864

TUBE FRAME FOR AXMINSTER LOOMS Filed March 4, 1931 iwf/yay? Patented Dec. 11, 1934 UNITED STATES PATENT OFFICE TUBE FRAME FOR AXllIINSTER LOOMS Application March 4, 1931, Serial No. 520,047

Claims.

- This invention relates to improvements in tube frames for Axminster looms and it is the general object `of 'the invention to provide .means whereby a greater number of rugs may be Woven from the spools than has heretofore been possible.

In the weaving of Axminster fabrics there is employed a series of spools each of which has wound thereon color yarns to be presented in rotation tothe fabric, the colors being variously `located on the succeeding spools to produce the Ythe barrel of the spool can be corrected by the clamp. By the use of the attachment set forth herein there is a substantial reduction in Athe lamountof waste yarn on each spool.

-It is customary yto provide Axminster tube frames with a color yarn guiding bead which -acts 'as a guard for the edges of the yarn tubes 'and it is a Afurther'object of my invention to provide a clamp which Will co-act with this bead to tension the yarns for the aforesaid purpose.

Itis another object of the invention to provide a clamp which shall be removably held in position and of such construction that it may readily be used in connection with existing tube frames and spools. The latter may have smoothy barrels and thetube frames may be used in the usual Way to weave the greater part of the color yarn, after which the clamps may be applied. tothe tube vframes and the remaining rugs woven by its use.

It is another important object of my present invention to provide a single clamping means for all the yarns which extend from the yarn spool and locate the same between the yarn spools and yarn tubes so that the yarn will not drop out of the tubes as `the tube frame passes over the sprockets and in which condition the yarn tubes extend from the frame in an upward direction.

With these and other objects in view Which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawing, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a front elevation of a tube frame made according to my present invention,

Fig. 2 is an end elevation taken in the direction of arrow 2, Fig. l,

Fig. 3 is an enlarged vertical section on line 3-3 of Fig. l,

Fig. 4 is a detail of one of the clamping bars, and

Fig. 5 is a detail of one of the spring clips.

Referring to Fig. 1, I have shown a tube frame having a body which may be formed of a hollow tube l1 in which may be located a pair of wooden strips 12 and 13, respectively. Secured to the outer portion of the bar are a plurality of angular strips 14 `which may be held in position by wood screws l5 anchored into one or the other of the wooden strips 12 or 13. Tuft yarn tubes 16 may be soldered to the angle strips and the latter may be formed with a longitudinal bead 17 struck therein above the tubes and so positioned as to guard certain edges of the yarn tube 16. Each end ci the tube frame is provided with the bracket 18 having a spool bearing 19 which supports a spool 20. The latter may have the yarns Y thereon which are led through the various tubes 16 to extend downwardly into tuft forming position. The usual brake 21 may be employed for the spool heads for the purpose of retarding the turning of the spool.

In use there will be provided a plurality lof tube frames which will have their yarns arranged in various orders as regards color and by mechanism not shown but Well understood the tube frames are moved successively to tuft forming position. The spool may have a barrel 22 on which the yarns are wound.

The matter thus far described is of common construction, being substantially as shown in Patent No. 1,515,022, and may operate and be constructed similar' to a Well-known commercial type of tube frame. As the yarn is unwound from the spools in ordinary practice they come ultimately to a condition of looseness which makes their control very difficult, and although the friction brakes 21 may retard movement of the spools, yet the short remaining ends of the color yarns are free to unwind fiom the spools.

In carrying my invention into effect I provide one or more devices which can be readily clamped to the tube frame at any desired time to overcome the defect which would otherwise follow from looseness of the yarn on the spool barrel. As set forth herein I provide the tube frame with a plurality of spring clips 30 which, as shown in Fig. 3, may have an upper horizontal portion 3l held to the tube frame by means of screws 32 and may have also a vertical angle section 33. These clips are arranged at spaced intervals along the length of the tube 'frame and the lower end of each of them may be formed with an upwardly opening pocket 35 dened in part by the upturned end 36.

In wide Axminister looms I prefer to use a plurality of clamping bars 40 which may have reduced end gudgeons 41 and a reduced central journal 42. The gudgeons and journals of the various bars are adapted to be received by the pockets 35 and the latter are so formed to retain the bars against accidental upward movement and also to hold said bars resiliently against the bead 17. This latter arrangement is not essential, as it is sucient for the purposes of the present invention ii the bars clamp the yyarns against a surface carried the tube ends of the tube frame may be made somewhat wider than those employed at the ends for the purpose of receiving gudgeons el of4 adjacent clamping bars.

In operation, the bars may be applied to the tube frame so as to be in position when the last part of the yarn is to be unwound from the spools. It is not necessary that the clamp be in position throughout the entire period during which a full spool is unwound, and it is tobe understood that the pressure exerted by the clamp is merely enough to hold the yarns in position. As the color yarns work loose on the spool barrels they may unwind slightly from the latter due to their own resilience, but the clamping bars 40 will hold the yarns in position and serve to impose upon the latter a resistance. The friction will permit the yarns to be drawn through the tuft tubes for the formation of additional rugs even though the color yarns be loose with respect to the spool. When threading the tubes preparatory to weaving the iirst rug the clamp may be removed so as not to interfere with any hooks or the like which may be inserted through the yarn tube 16 to thread the latter.

From the foregoing it will be seen that I have provided a very simple device applicable to the tube frame and positioned to exert pressure against the color yarns, to the end that the same may be withdrawn correctly to form rugs even though they be loose with respect to the barrel spool.

Having thus described my invention it will be seen that changes and modications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

l. In an Axminster tube frame having thereon a yarn spool and tuft yarn tubes spaced from the spool, a clamping element located between the spool and the yarn tubes, and extending transversely of the yarn tubes, and resilient means to hold said clamping element against the yarn to apply friction to a plurality of yarns as the same moves from the spool toward the tuft tube, said resilient means mounted directly on the tube frame independently of the yarn tubes.

2. In an Axminster tube frame having a yarn spool rotatably mounted thereon and tuft yarn tubes spaced from the spool, a clamping element located between the spool and the yarn tubes, resilient means to hold said clamping element against the yarn inA all positions of the tube frame to apply riction to the yarns as the same moves toward the tuft tube, and means deiining a removable connection between the element and resilient means.

3. In an Axminster tube frame having a yarn spool rotatably mounted thereon and tuft yarn tubes spaced from the spool, a longitudinally extending clamp operative independently of the position of the tube frame to force the yarns against a portion of the tube frame, and resilient supports mounted directly on the tube tubes spaced from the spool, a longitudinally extending bar forming part of the tube frame, a pair or longitudinally extending members both supported by the bar, the yarn moving between said members, one of the latter being fixed with respect to the bar and having a concave surface and the other being yieldably mounted on the bar and acting to force the yarns against the concave surface of the member iixed to the bar.

5. In an Axminster tube frame having a yarn spool and tuft yarn guides spaced from the spool, a bead extending along the tube frame between the guides and the spool to guard the tuft yarn tubes, said bead having a concave surface on the spool `side of the bead, and a tension device yieldingly mounted directly from the tube frame to present the tuft yarns against said concave surface, the tuft yarn passing from the bead into the yarn tube uninterrupted by the device.

WILLIAM E. MCCLEARY.

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