US991484A - Thread-parting mechanism for looms. - Google Patents

Description

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E. GUNMWJ v THREAD PARTING MECHANISM FOB LOOMS.v AQPIIL'IUAJIIO N` FILED DEO. 1, 1910.

91484 y v mallteam@ 9, 19111.l

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illllTEl STATES PATENT OFFICE.

EBll/'r'ltl CUNNIFF, OF EW BEDFORD, MASSACHUSETTS, ASSIGNOR TO DRAPER COM- PANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

v THREAD-PARTING MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented May 9, 1911.

Application tiled December 1, 1910. Serial No.'595,062.

.in connection with the accompanying draw-l ing, is a specification, like characters on the drawing representing like parts..

Automatic tilling-replenishing looms of i the feeler type are usually provided with means to cut the old filling between the cloth and the shuttle when illing replenishment is effected, the shuttle-feeler being relied upon to prevent replenishment if the shuttle is improperly boxed, mechanism of this character being shown in various patents,

as for instance in United States Patent No..

683,423 granted to Draper September '24, 1901.

The thread partei' is actuated by engage- 25 lay, andl it will be understood that if by chance the lling is cut when there is no operation of the replenishing mechanism there will be at least two empty picks in the cloth being woven, and while mechanism of the class above noted usually operates satisfactorily and properly there are times when in practice the filling is cut though there is no filling replenishment. To properly understand such faulty action it is necessary to briefly explain the sequence'of operations which causes the same, it being understood that the thread parter is carried by the shuttle-feeler and that the movement t ereof to operative position permits the positioning of 'the' dog of the transferring mechanism in the path of the bunter on the lay. If the shuttle is properly boxed the shuttle-feeler completes its rearward movement and the dog is engaged by the bunter on the advancing lay, to effect filling replenishment in wellknown manner, while the thread parter yis also operated to cut the old filling. 0n the other hand, if the'improperly boxed shuttle is hit squarely by the shuttle-'feeler not only is the thread ,parter prevented from acting upon the iilling but the dog is depressed so that it strikes the inclined face of the bunter and slides downward thereover, and cannot operate the transferring device.y When, however,

the shuttle is but slightly misplaced, leaving its tapered end in the path of the feeler the latter will hit the exposed part of the shuttle and will be arrested sufficiently to depress the dog and prevent change of illin but after so acting the feelerwill often sli e ofi' from or past the point of the shuttle, and the advancing lay is'enabled to effect a partial operation of the thread parter, enough to grasp but not cut the old thread. of filling. Thereafter', as the shuttle-feeler returns to its normal position, drawing forward the filling, the setting pin on the movable parting blade will strike the setting cam in such manner that the blade will be completely closed, parting the filling, whereas the true function of the setting cam is to open or set into operative position the blades of the thread partei'. It will now be understood how the thread parting mechanism can at times part the filling when no fresh `filling supply has been inserted in the working shuttle. y v

My present invention,` one practical embodiment of which is described' herein, has for its principal object the production of' a thread parting mechanism of the general type before referred to but soV constructed applied thereto, the parts heilig showninv normal position; Fig? is an enlarged detail in side elevation of a portion of the thread parting deviccs,wto be referred to; Fig. 3 is an enlarged detail, viewed from the righthand side of the loom, of the dog 1n engagement with the bunter after initial depression of the said dog, to show the novel construction of the bunter and the operation thereof; Fig. 4 is a detail in front elevation` of the bunter shown in Fig. 3; Fig. 5 is a vertical section thereof onthe line 5 5,y

and arranged that lthe parting of the old,

detachable iiig. 4; Fig, 6 is a perspective view of the bunter cap, removed from the bunter.

Referring to Fig. 1 the lay A, fillingeeder F, transferrer f iilcrumed. at and having a downturned arm, f3 on which is pivoted at j* the notched dog m", and the controlling rock-shaft d for the replenishing mechanism; the shuttle-feelin' Y', formed b the rearwardly-bent upper end of the erm the latter mounted to rock on the steile, the arm d fast on the rock-shaft d and bearing on the'pin 30 on said arm if, and the spring S to normally maintain said :arm and thepart's carried thereby, and the dog mfg-in ino rative position, may be and are all substau ially ad in the Draper patent 'referred to. 'I

Herein I have shown the yfinger n', (which `L fast on the arm Y) as provided with a cam 'slotmz forl the'stud m* on the dog. 4to

control positively the position of the latter y by or .through the movement of the same arm, and also toenable depression of the f dog to effect retractive movement of the patent, and which is well known to those.

shuttle-feder, instead ofl using the cam-like or. curved finger n shownV in the Draper rearward.- The closing ot the blades is effe'cted by engagement of the heel c with a .blade-c losing projection 02 fixedly mounted on the lay, and if the yclosing operation properly completed the pin c will slide over the top ofthe setting cani es and temporarily -depresS it as the shuttlc-feeler returns to normal position.

The thread-catcher,

the Draper patent.

In' accordance with my'prcseiit invention the bunter for the transferring mechanism isinade as a laterally extended and inclined pai-til of the upturned end of a bracket 2 in practice bolted to the lay, the front face 3 of thfbiintei being inclined downward and reafirwardandits upper face is beveled at. et,

(iO/'providing aiVfshaped edge` to coperatc with' the usual vnotch m in the end of the tiogmX when iilling replenishment is to be effected. The bunter is cut away at its top to leave a clearance 5 between it and an L-shaped cap G, shown separately in Fig. 6,

arm E, the

denoted as a-whole at C," Figs. 1 and 2, forms no part of this iii- -ve'ntion and is fully shown and. described in 'the fulci'um fx.

- the protuberance tixedly held in place on thc bracket end and bunter by screws 7, 8, the overhanging part oi" thc cap having a spring-seat or socket 9 therein. w l

The blade actuator 02 can be made as a part of the bunter bracket Q, as shown in F ig. 1.

The bunter l has a rectangular opening 10 in which is mounted an impact member 11, notcliedat Iits lower end at 12, Fig. '3, to embrace the adjacent part of the bunter below the o ening 10 and having at its upper end a lip 13 to engage the upper face of the bunter adjacent thereto. A sprin 14 'interposed between the capG and sai impact member normally maintains the lat- 'ter seated.' as shown in Figs. 3, 4 and 5,

with a convex protuberance 16 thereon projecting beyond the bunter face 3, said protuberance being a short distance below the edge formed by the facesV 3, 4 of the bunter. The spring 14 is seated in the socket I9 and in an opposite socket 17 in the impact nicmber 11,' so that the latter is yicldingly retained in normal position, but pressure upon the projecting part 16 will cause the impact member to be moved bodily rearward from the face 3 of the bunter into the clearance 5. This convex protuberance 16 is positioned opposite the path of movement of the notched end of the dog m* when the latter is swung on its fulcrum fx. When the dog is moved intt position to be properly engaged bv the upper, lateral edge of the bunter filling replenishment will bc eil'ccted, as usual, and at such time the impact inciiiber 11 is inert and has no function to perform. If, however, the shuttle-fcelcr cngages any part of the shuttle projecting from the mouth of the shuttlc-box the forward movement of the lay acts through the shuttle-'teclcr and the linger n. tov depress 'the dog in* so that its notch m cannot be cntcrcd'bytlie upper edge of the bunter, andl there will be no clizinge of filling. This condition of the parts is clearly shown in Fig.

3, the end of the dog above its notch abutting against thc protuberance 16, and as the lay is still moving forward the convex face ot' said protuberance acts as a cani to accelerate the downward movement of said dog about That is, the cam action of upon the dog is more rapid than would be the case if the depressing action were duo only to the inclined face 3 of theV bunter, and such accelerated motion of the dog acts through the linger n. to quickly retract thc sliuttle-feeler away from the still advancing lay. Such retraction moves the heel c frontward so that thc act tuator 020 cannot engage it, hence no closing movement can be exerted upon the blade c", and there is no possibility of the old thread -of lling being caught or grasped between the parting blades. Furthermore, the setiio 'will bring the dog temporarily under the takes up the Wear tion,

control 0f the ,accelerator or prot-uberance 16, to operate as described. As soon as the accelerator has performed its stated funcF whichi'of course is instantaneous, the spring 14 yields as the lay completes its forward beat and permits the end ot the dog to slide down the front of the bunter before the usual transferrer spring will yield, the spring 14 temporarily h ol'dthe operative position accelerator 16 in its The accelerator also dog' when filling replenishment ispreventH ed, and thereby prevents the face ot the bunter from becoming worn and hollowed out by frequent engagement with the dog'.

It will be iinderstood from' the foregoing; descriptionthat the initial result of engage ment of the shuttle-eeler with the 1mprop` erly boxed shuttle is to arrestI and then push forward the sliuttle-teeler, causing the inger n 'to depress the dog from operative position and preventing tilling replenish ment, the dogr coming into engagement with the accelerator. As the lay is still moving forward, the accelerator continues the depression of the dog but with increased speed, and the dog now acts through the linger n.' to effect a further and rapid retraction of the shuttle-feder. This latter retraction moves the heel .f/ for-ward too quickly for the actuator .120 on the lay to catch up with it before the setting` pin c has passed th'e criticald point at or near the rear end of the yielding setting cam e8.. A sl the parting blades cannot. there-fore, be closed partly or completely it follows that the old 'llling thread cannot be caueflit between tliern, nor cut, when tillingreplenishment is prevented. In other words, if the improper-positioning ot the shuttle is detected by the shuttle-fceler, and the operation of the i'eplenishing mechanism is thereby prevented. it is impossible to etfect the operation of the thread. partei'.

Changes or modifications in 'de i ils ot' construction and arrangement may'ibe made by those skilled in tlieart Without departing from the spirit and scope of my Ainvention as set forth in the claims hereunto annexed. Having fully described my invention, what l claim as new and desire to secure by Let-ters Patent is:

v l. In a loom having filling replenishing mechanism and controlling means therefor,

only having sufficientstrength toA due to the impact. of the including a bunter and a `dog to cooperate therewith, a shuttle-feeler and .a threadl partei' thereon to part the old filling. a lay, an actuator thereon for the thread partciya controlling connection'betwcen the vshuttlefeeler and dog and normally adapted to position the latter jfor cooperation with the bunter when filling replenishn'ient 'is called for, engagement ot' the shuttle-feeler with the shuttle when improperly hoxcd acting tl'irough the controlling connection to'move the dog from operative position, and means to continuesuch movement of the doar at accelerated speed, the accelerated movement of the dog acting through the controlling connection toretiact the shuttle-tcelexi and thereby prevent operation of the thread partei' by its actuator.

2. In a loom having filling' i'eplcnishing 'mechanism and controllingj-` means thcrefv for, including a hunter and adogir tol copcrate therewith, a shuttle-techn' and ii thread partei' thereon to part the old lillinfr, a lay, an actuator thereon toi' the thread partei', a controlling* connection between the shuttleiecler and dosir and normally adapted to position the .-lat'tei' toi' eoipci'ation with the bunter when fillin, r replenishment is called for, engagement ofthe shuttle-teder with the shuttle when improperly boxed act-ing through ,the-controlling coiinection to move tbe dog: from operative position, and a device on the bunter to engage and continue such' movement of the dog at accelerated speed, the accelerated movement of the dog' acting through the controlling connection to retract the shuttle-feeler and thereby prcyent eoipei'ation ot the thread parler and its actuator.

3. In a loom having Aillinrg i'eplen'ishing nechanism and controlling' means therefor. including; a bunter and a dog to cooperate therewith, a sliuttle-feeler and a thread partei' thereon to part the old yfilling. a lav. an actuator thereon for the thread partei, a controllingconnection between the shuttleteeler and dog and normally adapted to p0- sition the latter for coperation with the bunter whenV fillingf replenishment is-'called tor, engagement oi the shuttle-teeler with the shuttle when improperly boxed actinfrb through the controlling connection to move the doof from operative position, and aide vice yieldiiigly mounted on the hunter to temporarily engage and continue such movement ot the dog` 'at Vaccelerated speed, to A retract the shuttle-teeler and thercbv prevent .coiperation of the thread partei' and its actuator, said device thereafter yielding to permit the disengagement. ot the doe' therefrom. l: 4. A n automatic filling' replenishingv loom in which the filling is replenished before complete exhaustion. having in combination, a thread parter :for the old filling, a swinging shuttle-feder on which it is mounted, a lay, an actuator thereon for the thread partei', means, including a bunter on-t-he lay and a dog to coperate therewith, to effect t-he operation of the replenisliing mechanism, a controlling connection between said Shuttleleeler and dog to operatively position the -latter when filling replenishment is called for and the shuttle is properly boxed, en-

gageinent ofsaidA feeler with the shuttle it' l the advancing lay.

Iimproperly boxed when tilling 5. An automatic filling replenisliing loom, having, in combinatioma shuttle-feeler movable automatically into'iIling position when replenishment is called for, a thread partei' mounted on the feeler'hand moved thereby into operative position when the shuttle is .boxed properly, an actuator for the thread partei', mounted on the lay, means including a dog, to etfecttlie operation of the replei'iishing mechanism, a controlling.;` connection between thesliuttle-feeler and the dog to operatively position the latter if'the shuttle is properlyboxed, and to prevent such positioning' ot' the dog when the shuttle is rcplenishment 'is called for, and separate means to cooperate with the dog when the shuttle, is improperly boxed, and impart an additional movement to the dog away from operative position, such movement acting through the controlling connection to positively .retract the shuttle-feeler and thereby withhold the thread partei' -from cooperation with its actuator.

`(l. ln aloom, in combination, mechanism to replenish automatically the running shuttle with filling, means including a bunter onthe lay and a dog, to etlect the operation ot said mechanism, a shiittle-eeler to cause coperation ot the dog and bunter when the shuttle is'properly boxed and to prevent such the old iillingr.

eeneee ated movement of the dog;V acting through the controllingV connection to effect a quick retraction of the feeler and thread parting device thereon, to prevent cooperation of the latter with its actuator, .thedevice on the bunter yielding to permit disengagement of the dop,` after the completion of its accelerated movement.

7. lin a loom, havin;r filling replcnishing mechanism and controlling means therefor, includingl an apertui'ed limiter on the lay and a dog to cooperate with said bunter, a shut* tlc-techn' and a thread partei' thereon to part an actuator for the thread partei', a tzouti'olliing connection latwcenlhe slnittle-feeler and dog, and normally adapted to position the latter. lioi c i\niation with the bunter when filling' rel'ilenishnient is called tor, engagement of the shuttle-feder with, the .shuttle when iml'n'operly boxed acting' through the eonti'ollinplr connection `to move the dog 1from operative position, an impact men'ibei' yieldiup'ly.mounted in the aperture of the feelcr, and having a cam-like protulwrancc normally projecting` beyond the tace of the bunter, lsaid protuberaiu'e acting' upon the dog after its movement` from opei'alive position by the shuttle-feoler, and temporarily continuing` such movement at accelerated speed, to act upon the shuttle.- teeler through the controlling connection, and thereby retract the thread parterfi'om cooperation with its actuator.4

ln testimony whereof, I have signed my name to this specification, in the presence of two subscribinit;` witnesses.

` l'lDlVARD CUNNIFF. Wit liessen:

llonnn'r E. hilains, l). l). Oscoop.

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