US1527779A - Shuttle for enabling all looms to be worked as looms having a continuous weft feed - Google Patents

Description

Feb. 24, 1925. 1,527,779

A. BOITEL SHUTTLE FOR ENABLING ALL LOOMS TO- BE WORKED AS LOOMS HAVING A CONTINUOUS WEF'I' FEED Filed Jan. -19, 1925 5 Sheets-Sheet 1 y I J' il Feb..24, 1925. l 1,527,779

ENABLING ALL LOOMS TO BE WORKED A. BO'ITEL SHUTTLE FOR 'AS LOOKS HAVING A CONTINUOUS WEFT FEED` 5 Sheets-Sheet 2 Filed Jan.- 19, 1923 Feb. 24,1925. '1,5253179 A. BOITEL SHUTTLE FOR ENABLING ALL LOOMS 'IO BE WORKED AS LOOMS HAVING A CONTINUOUS WEFT FEED Filed Jan. 19, 1923 3 Sheets-Sheet 3 y wmf/:firs

Patented Feb. 24, 1925.

UNITED STATES ALEXANDRE BOITEL, OF PUTEAUX, FRANCE, ASSIGNOR TO GEORGES PARIS, FRANCE.

PATENT OFFICE.

DELMOUSEE, OF-

SHUTTLE FOR ENABLING ALL LOOMS T0 BE WORKED AS LGMS HAVING A CON- TINUOUS WEET FEED.

Application filed January 19, 1923. Serial No. 613,593.

To all whom t may concern.

Be it known that I, ALEXANDRE BoirsL, a citizen of the French Republic, residing at Puteaux, in the Department of the Seine, France, have invented new and useful Improvements in Shuttles for Enabling All Looms to be `Worked as Looms Having a Continuous W'eft Feed, of which the following is a specification. V

This invention has for its object to enable all looms to be worked as looms having a continuous weft feed, by means of weft bobbins or cops arranged at each side of the loom, the weft being inserted alternately into the warp shed by means of a shuttle or other moving device furnished with tongs or other means of grasping the weft.

The invention therefore consists in imf provements in the shuttle which is designed to engage alternately at each side of the loom the weft required for the pick, and to carry said weft through the shed. The invention consists in such a manner of operating this shuttle as will assure a reliable working of the loom, without breakage of warp threads, and so as to produce a perfectly even selvedge. l

The improved shuttle has externally the shape of the ordinary shuttle and may be solid or hollow; at or near each of its tips, in a direction parallel to the axis passing through the tips of the shuttle, it comprises a fixed hook designed to engage the weft thread and carry it through the shed. This shuttle comprises further improvements whereby, for instance, the fixed hooks shall not hinder the complete travel of the shuttle through the shed, when picked by -a picker of a mechanical picking mechanism, or other picking mechanism of pneumatic, electric, elastic, or `other type; and the said fixed hooks shall not catch, and consequently cut any warp threads that are not sufficiently taut, or when the opening of the shed is not large.

The improved operation of the improved shuttle ischaracterized by the feature that on the exit of the shuttle from the shed, Athat is to say, on its arrival in the shuttle boxes, the position of the shuttle will be such that the weft which is doubled shall not project beyond the selvedge of the cloth, and that after the hooks have become disen` gaged from the weft shoot just picked, the said hooks shall not be liable to catch the last threads of the warp near the selvedge and thus break them, when the slay begins its back stroke.

In order to enable this invention to be more fully understood, several constructional forms of the improvements constituting the invention are hereinafter described and illustrated diagrammatically in the accompanying drawings, in which 4 Figure l is a shuttle.

Figure 2 is a side elevation of the same, viewed from the hooked side facing the reed, and

Figure 3, is a side elevation, viewed from the opposite side, facing the cloth.

Figure i is a view showing the shuttle gearing its entry into the left-hand shuttle Figure 5 is a similar view showing the shuttle at the moment when the rear hook has released the loop of the weft at the lefthand selvedge of the cloth, and

Figure 6 is a similar View showing the shuttle at the moment when the slay, after reaching the fell of the cloth, is about to begin its back stroke. v

Figure 7 is a view lof the left-hand end of the slay, showing the location of the mechanism for positioning the shuttle.

Figure 8 `is a view showing the mechanism at rest, which is designed to bring the weft within the range of the hook of the shuttle when the latter is about to be picked through the shed, andY Figure 9 is a similar' view showing the weft engaged by the hook at the remote end of the shuttle.

As shown in Figures l, 2 and 3, the improved shuttle l is characterized by the feature that its side 2 which comes in contact with the reed, is shifted out from the axis passing through the tips or points of the tapered ends of the shuttle relatively to the opposite side 3, so that this side 2 has a non-symmetrical hump, which in proportion to the degree of hump, increases the distance between the reed against which the shuttle slides and the said shuttle axis the latter being shown by the broken line in Fig. l.

Owing to this non-symmetrical hump 2 plan of the improved hooked A which increases this distance between the reed` and `the shuttle axis, the fixed hooks, having shanks 4 whose points or turned-over hook-forming ends 5A are varranged horizontally and bent towards the reed, may be arranged with the hook shanks or rods 4 parallel to the shuttle axis without risk of the hook ends 5 coming into contact with the pins of the slay reed, and without risk of catching in the threads of the warp shed, while at the same time being suficiently distant from the shuttle axis, to allow of the shuttle being picked by any kind of picking mechanism whatever, such as for instance, the picker 6, without any modification whatever of the picking devices which are thus prevented from coming into contact with the hooks 4 and damaging these vby the picking blow, which would `occur if the hooks 4 were mounted simply on the usual forms of shuttles. y I

Further, for the purposes of operation of this shuttle, the latter on its side B facing the fell of the cloth is provided with t-worecesses or mortices 7, according as the shuttle 1 is solid or hollow, for al purposel hereinafter set forth. I y

The operation of the improvedshuttle as hereinafterdescribed for the purpose of enabling all looms tobe worked as looms having a continuous weft feed, must, beyond theY operation common to all shuttles, essentially comprise at eacharrival of the Vshuttle lat the right hand and left hand sides of the slay, absolutely determined movements designed to position the shuttle 'successively at determined points intended to effect, first the oertain release of the tips 5 of the hooks 4 from the loop of double weft which has just .been passed, without however allowing the loop constituted by this doubled weft, topii'oliect beyond the last threads oi' the warp, yso as yto ensure a perfectly even 'selvedge-, and lhen to assure the b ackstroke of the shty, without the hooks ofv the shuttle during this back stroke catching thel end threads, of the warp, whereby such threads would becon'ie daniaged with consequent waste ofl the threads and .a great loss of time consumed in repairing them. 4 y A `lilith this object, the arrivalof the shuttle at either of the two selvedges is soregulated and positioned that, in combination 'with the advance of the slay towards the fell of the cloth, the shuttle will occupy al position which is absolute-ly determined forassiiring the disengagement of Vthe point of the hook from the loop of doubled weft without said loop projecting beyond the selvedge. y Then at the moment when the slay reaches there-ll of the cloth, and after it has beaten up lthe shoot of wett, the position of the shuttle ywill be so regulated that the distance otitis hooks from the selvedge ofthe warp shall be'sufficiently great to prevent, during the/back stroke of the slay, the hooks from catching the lastl threads of the s'elvedge on' each side of the warp sheds.

This determined operation of the shuttle may be produced by various means and among others, by a pusher mechanism `of the kind hereinafter described, mounted on eac-h side of the slay, and constituted by a plate 8 Xedto the slay, comprising two bosses 9 through which can pass vertically a spindle 10 on the upper end of which there is lined a horizontal linger or pusher 11 designed to enter the mortices 7 of the shuttle so as to assure the absolutely necessary positions of the latter according to? the rocking motion imparted tothe pusher 11'A during and by the advance o the slay, by 'means of the regulatedrotational inotionof the spindle 10, due to a kind of horizontal project-ion 12 which is fixe-d on the lower end of the said spindle, and comprises an anti-friction roller 13A for reducing the friction along a. fixed ramp or stationary cam 14 mounted under the slay and fastened to the loom framing. y This iiXned ramp comprises two cam projections 15 and 16 designed tov impart', according tothe advance oft-he slay to the fell of the cloth, two determined 'positions to the pusher 11, which assures the necessary positions of the shuttle. rThe return of th'e pusher 11 into its normal position is assured by a spiral spring 17, whose ends are fixed respectively to the plate 8 and pusher 11. vOn each yside of the slay, the side plates 18 of the shuttle-'guides are notched at 19 in lsuch a manner as to allow of horizontal oscillation of the pusher 11 land its 'entry 'into the -mortices 7 of the shuttle 1.

This very simple mechanismy 'having been arranged and mount-ed as above described, will now operate as follows: l K As shown 'in Figurel 4, the Ishuttle 1 vis shown 4as arriving Aat the left hand selvedge before coming into Contact with the pusher v1 1 which is at rest, the roller 13 not having yet come into contact with the ramp '14.

As 'the slay 'continues to advance, the roller 13 will come into contact with the first projectionl of lthe ramp 14, thus y'producing alpartial rotation of the spindle 10 and an oscillatory finotion ofthe ypusher 1'1, which passing throuoh the notch l19 of the vleft hand shuttle-guide 18, ywill enter the 'lefthand niortice 7 in the side 3 of the shuttle 1, pushing the latter so as to bring iit into the position of leftward travel K4shown in Figure 5, and by reason of the continued 4forward movement of the slay 'the hook 5 of the rod'4 is disengaged from the loop'QO 'constituted by the doubled weft 21 'as also "shown in Fig. 5, without this 4loop projecting beyond the vlast lthread "22 "of lthe warp shed. i

VJ ust "before theslay arrives atthefell of the cloth, the roller "13 coming on tothe projection 16 of the ramp 14, will cause the pusher 11 to rock forwards a little more, as shown in Figure 6. This movement will bring the shuttle to the end of its travel in an absolutely exact manner, thus keeping with certainty a distance between the hook 5 and the last threads of the selvedge of the cloth, with the` result that when the slay moves back, the said threads will not be liable to be caught by the point 5 of the hook 4 and so be broken.

In order to assure the engagement, by the shuttle of the weft thread to be inserted into the shed, a mechanism may be provided for raising the weft thread coming from the cop or bobbin, to the level of the hook 5 of the shuttle at the moment of picking. A. mechanism of this kind will of course be provided on each side of the loom, and may be constituted for instance, by a verticalbar 23 carried by the slay and capable of sliding vertically in relation to the latter. This bar 23 receives the weft thread 24 from the bobbin mounted at the side of the loom, and, passing to the selvedge of the cloth, this thread lies flat on the bottom of a notch 25 formed in the slay sole, in such a manner as to allow the shuttle 1.to pass when Vthe bar 23 is at rest in its lower position, as shown in Figures 7 and 8, the shoot at this moment being supplied by the bobbin situated on the opposite or right hand side of the loom When theshuttle is to be picked from the left hand side to theright hand side, for example at the moment when the shuttle in the initial part of its picking movement, has moved beyond the notch 25, the bar 23 is raised (as shown in Figure 9) so as to bring the thread underneath the shuttle 1 and curving it in such a manner that the thread 24, when taut, shall be situated in the path of the point 5 of the hook 4, at the rear or left hand end of the shuttle, and shall there- Yfore be carried along by the shuttle so as to constitute the double shoot 21. The thread is drawn from the bobbin without friction or braking, by leading the thread through guides or conduits 26 of porcelain or other material.

The raising of the bar 23 on each side of the loom at the moment of departure of the shuttle 1 is produced for` instance by means of a lever 27 bearing against a stud 28 of the bar 23, this lever 27 being raised by a cam 29 fixed on the eccentric shaft of the weft stop-motion for example.

The vertical bar 23 is mounted on the slay to move therewith, and also for up and down sliding movement thereon, and may extend from the lower portion of the slay to the top thereof. The lever 27, which raises the bar 23 by means of the stud 28, is also mounted on the slay to move therewith, and at its right hand end is pivoted on a supporting block 30 iixed upon the slay, as shown in Figure 7. not mounted on the slay may be fixed on any suitable shaft on the loom and is shown in Figs. 7, 8 and 9, as carried by a shaft 31, which, as above noted, may be the eccentric shaft of the weft stop-motion. Just at the time when the slidingthread-controlling bar 23 is to be raised, the slay occupies a position in which the lever 27 is located just above and in the path of the cam 29. This cam 29 is so positioned upon its operating shaft 31 as to operate to raise the lever 27 just at the time when the lever 27 is brought by the moving slay into alignment with the cam. The raising of the lever 27 raises the bar 23 and lifts the weft thread 24 into position to be engaged by the rear shuttle hook 5, as shown in Figure 9.

The operation of the thread-lifting bar 28, as above described, is so timed that lthe thread 24 is lifted from the notch 25 at a time when the shuttle 1 is in the initial part of its course in its picking movement and at a time when the forward point of the shuttle, with respect to its direction of movement, has passed a vertical plane passing through the thread 24. In view of the fact that the shuttle at this time will be above the thread 24, which passes through the notch 25, it will be understood that the thread as it is drawn upwardly by the bar `23 will pass around beneath and up at the rear of the shuttle, and as soon as the body of the shuttle has passed at its rear end beyond the notch 25, the thread 24 will be brought into position to be engaged by the shuttle hook 5 at the rear end of the shuttle, as shown in Fig. 9, in which the thread 24 is shown in dotted lines at the remote or rear end of the shuttle 1, so that as the shuttle continues its picking movement, this "rear hook, which is at the left hand end of the shuttle, as viewed in Figs. 1 to 6 inclusive, will catch the weft thread 24 and carry it doubled through the shed.

It is to be understood that modifications may be made in carrying the present improvements into effect without thereby departing from the nature of the invention.

What I claim is:

l. In a loom shuttle comprising a body having tips to be engaged by the picker, the combination of weft-engaging hooks fixed on the shuttle, o-ne at each end of the shuttle, said hooks being located out of line with the shuttle axis passing through said tips so as to provide clearance for picking on the tips, and said hooks being located between said axis and the side surface of the shuttle which comes next to the loom reed and being turned toward the latter and being located sufficiently inward from said side surface of the shuttle to clear the reed.

2. In the loom shuttle claimed in claim 1,

The cam 29 which isl the locating` of said shuttle axis farther from the reed side than from the fell side of the shuttle, thereby to provide ample clearance of said hooks for picking the shuttle on its tips and also between said hooks and the reed so that the hooks will clear the latter.

3. The loom shuttle claimed in claim l in which each of said hooks comprises a hook shank parallel to the shuttle'axis and ter1ninating in a hook-forming endidirected towards the reed side of the Shuttle.

4L. The loom shuttle claimed in claim l in which each ofl said hooks comprises a hook shank parallel to the shuttle axis and projecting beyond the adjacent shuttle tip and terminating in a. hook-forming end directed towards the reed side of the shuttle.

5. A loom shuttle comprising a shuttle body having tapered ends forming tips to he engaged by the picker, the axis of the shuttle passing through said tips being farther from the lreed side of the shuttle than from the fell side thereof, to provide space for weft-engaging hooks between the shuttlc tips and the outer surface of the reed side of the shuttle, and at each end of the shuttle a weft-engaging hook comprising a hook shank parallel to the shuttle axis hetween the latter and the outer surface of the reed side of the shuttle and fixed on the shuttle, and terminating outwardly beyond the shuttle tip in a liool for1ning end directed towards the reed side of the shuttle but terminating on a line inward from the outer surface of the reed side of the` shuttle so as to clear the reed, and said hooks be ing suiiiciently spaced from the shuttle axis to enable the shuttle to be picked on its tips.

6. The loom shuttle claimed in claim '5 in which shuttle positioning recesses are provided in the fell side of the shuttle.

7. In a loom, in combination with the shuttle thereof claimed in claim l, and in which said shuttle hooks project longitudinally of the shuttle beyond the shuttle tips, automatically operated means adapted to move the shuttle positively at the end of its throw to a position in which the weft-carrying hook just clears the selvedge, so that the forward movement of the reed-carrying Slay will disengage the hook from the loop of the weft without carrying the latter beyond the warp threads at the selvedge, said means being adapted then to impart further posi- Leanne tive movement to the shuttle so that as the slay moves backward the hook will clear the selvedge and the warp threads.

8.l .In ay loom, in combination with the shuttle claimed in claim 5 to form a part thereof, and said shuttle being provided with shuttle-positioning recessesfinn the fell side thereof, at each end of the slay a shuttle-positioning device operated by the slay in its. forward movement, said device comprising a finger pivoted on the slay and engaged in one of said recesses in the shuttle, an operating' member connected to said finger, and a stationary .cam having two successively acting fingerfopcratingcam projections, the first cam projection engaging said member to move the shuttle only sutiiciently to clear the shuttle hook from the warp threads at the selvedge, so that the further forward movement of the slay will disengage the hook from the loop of the ,weft thread without the latter being carried to the selvedge, and the second cam projection then engaging said member to impart further traveling movement to the shuttle i,

so the disengaged shuttle hook will clear the selvedge and warp threads as the slay moves backward.

9. In a loom, in combination with the shuttle claimed in claim vl to form a part of the loom, an automatically operated device at each end of the slay for moving the weft thread into a position to be engaged by a shuttle hook. Y

l0. In a loom, in combination with the shuttle claimed in claim 5 to form a part of the loom, means at each end of the slay to guide the corresponding weft thread beneath the shuttle race as this thread passes forward to the fell of the web, a lifter on the slay back of the shuttle race to raisethe weft thread around the shuttle and into engagement with the shuttle hook at the picking end of the shuttle, and means for automatically operating said lifter including a cam operated by a suitably moving part of the loom.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. i

ALEXANDRE BOITEL, Witnesses Gains DANZnR, Liicinn Crespin;

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