US1688309A - Weft-replenishing loom - Google Patents

Description

Oct. 16,1928. 1,688,309

- S. S. JACKSON WEFT REPLENISHING LOOM Filed July 31, 1925 Patented Get. 16, 19 28.

UNITED STATES PATENT o FicE.

SIMEON S. JACKSOIl, OF HYDE PARK, MASSACHUSETTS, ASSIGNOR TO THE STAFFORD COMPANY, OF BOSTON, MASSACHUSETTS, A COREORATION OF MASSACHUSETTS.

WEFT-REPLENISHING LOOM.

Application filed July 31, 1925. Serial No. 47,259.

The invention is designed for application to automatic weft-replenishing looms, and in particular to such looms of this class as op crate to effect weft-replenishment prior to complete exhaustion of the shuttldcontained weft-supply. Such looms are equipped with means for parting the old weft-thread at.

the mouth of the shuttle-box'at that side of the loom at which replenishment is effected, just prior tothe expelling of the substantiah ly depleted weft-carrier from the shuttle to make way for the fresh supply of weft. This parting of the weft-thread is necessary in order to allow the old weft-end to be drawn out of the eye of the shuttle as the substantially-depleted weft-bobbin is expelled to prevent such old weft-end being drawn into the shed in the warps upon the n ing pick of the shuttle with the fresh supply of weft in, the shuttle, and thus causing a double pick, which would injure the quality of the goods being woven. The said weftparting is effected by a weft'parter mounted on the usual shuttle-feeler. with some classes of weft, as for instance coarse and heavy weft, or hard twisted and kinky weft, the portion of weft extending from the selvage-warps to the delivery eye of the shuttle frequently assumes positions which cause it to be missed by the said weftparter. Consequently the duty of partlng such portion is not performed.

One object of the invention is to provide means for holding and steadying the weftthread at a point between the selvage and the shuttle-box, to insure its entering'the cutting jaws of the weft-parter and being severed each time such action is called for. Another object is to p-rovideimproved means for preventing the weftthread from kinking at and adjacent the selvage-warps in the regular running of a loom.

The invention consists in a weftholding brush or pad which is mounted upon the lay of a loom between the selvage-warps and the mouth of the adjacent shuttle-box, in position to engage the weft-thread between the selvage and the shuttle-box, and adapted to Kl] succeed- When weaving tion is shown in the accompanying drawings, in whicln Fig. 1 is a view showing, partly in vertical section in a plane extending from front to rear in a loom, certain of the parts at the weftreplenishing end of the loom, with the device of the invention installed on the laly-beain.

Fig. 2 is a perspective view of certain of the parts of Fig.1.

Fig; 3 is a perspective view of the'brush or pad, shown separately. I A

Having reference to the drawings,- A common means of effecting the necessary parting of the old weft which immediately precedes the expulsion of a substantially exparts shown are certain of the devices employed in effecting automatic weft-replenish ment. In this familiar arrangement, a weft-parting device is mounted on the lower end of the shuttle-feeler 1, which latter swings rearward about pivot 2 when the parts are setto effect weft-replenislnnent by the action of the usual weft-detecting or feeling devices. The lower end of this shuttle-feeler moves rearward at this time to meet the advancing lay, crossing the lay-beam 3 in the groove 4 cut in the race-plate 19 just at the mouth of the shuttlebox, (not shown), to make sure that the shuttle 5 is fully entered within the shuttle-box and in position to receive the fresh weft-carrier.

As this shuttle feeling operation occurs, the weft-thread 6 stretching outward fromthe selvage-warps 7 to the delivery eye of the shuttle within the shuttle-hex should enter the opening 8 between the cutting jaws of the weft-parter aforesaid, carried at the lower end of the shuttle-feeler .1, and be severed when the front of the lay-beam 3 strikes the tail 9 of the movable cutter-blade 10 to bring the said blade 10 down to sever the weft-thread.

As indicated hereinbefore, the portion of the weft-thread 6 extending between the selvage-warps and the shuttleeye, is not always in proper position to enter between the cut ting jaws. When this happens, the weft is not cut, and upon the next pick succeeding replenishment, with a full bobbin within the shuttle, the shuttle lays in the shed a pick of weft from the fresh weft-supply within the shed, and also trails into the shed the old weft-end which could not draw clear out of cloth and remove it.

- the shuttle-eye because it had not been cut. This of course produces a defect in the cloth being woven, and makes trouble for the weaver, if he detects it in time to unweave the picks in a piece of clothreduces the value of 1 some kinds of cloth materially.

Referring now tomy improved means for holding and steadying the length of weft" threads 6 at a point between the selvagewarps 7. and the mouth of the shuttle-box 5- As already indicated, .in carrying my nvention into effect I mount a brush or pad upon the lay of the loom, between ,the selvagewarps 7 and the mouth'of the shuttle-box at the side of the loom at'which replenishment is effected. I employ a brush, substantially as shown, comprising bristles, hair, fibers, fine wire, or equivalent agencies, which are by nature adapted to hold lightly by frictional engagementa thread drawn across them. A practical embodiment of the idea is that shown in the drawings, namely a small brushlike device, Fig. 3, comprising a tufts 11, 11, set'in a backing 12,

plurality of and having a tang 13 combined with it, as by a screw .14, the device being mounted of flight ofthe shuttle 5, with the bristles projecting down moreor less into the path of the shuttle. The said device is conveniently atlixed to the lay-cap 16 by a screw 18 occupying a vertical slot 15 in the said tang.

The said slot permits the height of the device above the race-plate to be adjusted. The bristles are of -a soft yielding nature, sofas to be easily bent anddefiected by the shuttle as it passes under them,fwithout danger of deflecting-the shuttle itself from its course, and extend down toward the race-plate suf-.

ficiently low to engage the portion of weft 6 which extends from the shuttle-eye and thread groove 20 in the side of the shuttlev inward to the selvage-warps. Thus theweft thread 6, paid out from the flying shuttle at the height of said thread-groove 20, is engaged by the bristles as they spring back into their normal position following the passage of the shuttle under the brush. v Asthe bristles engage theweft-thread almost at-the rear end of the thread-groove 20 of the shut.- tle, -and as this thread-groove is of course A number of double above the path I the said shuttle-box,

(the shuttle-box mouth always a fixed height above the race-plate 19, the weft-thread 6 is held at such height,

and somewhat forward from 't he'backof the shuttle-box, and consequently will enter the shuttle'upon the, lay between the selvage warps and the shuttle-box at the side of the loom at which replenishment is effected and having bristles extending downward-into the said path, in position path of the shuttle to catch the weft-thread between the selvage of the cloth being woven and the shuttle-box mouth, to prevent the weft-thread from kinking in the regular working of the loom and to sition for engagement by the said weft-parter.

2. Ina weft-replenishing loom, the combination with the lay, a shuttle-boxthereon,

anda device which parts the old weft between the selvage-warps and a shuttle occupying mounted upon the layv and extending from above the path of the shuttle downward into. the said path between the selvage-warps and shuttle passes in its {light into such shuttlebox. g V I 3. In a weft-replenishingv loom, the combinationwith the lay, ashuttle-boxthereon, and a device which parts the old weft between the selvage-warps and a shuttle-occupying the said shuttle-box, of a weft-detainer mounted upon the lay and extending from above the path of the shuttle downward into the said path between the selrage-warpsand the shuttle-box mouth and under which the" shuttle passes in its flight ll1tO,'SllCl1 shuttle-box, and'means for Vertically adjusting the working position of thev said weft-detainer. j

. I SIMEON s JAojKsoN.

hold it in powith relation to the of a weft-detainer ,and under which the I

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