USRE11923E - Gildard - Google Patents

Description

Na. u,923.

Raissued July 30, 190i. J. COLDWELL & C. G. BILDARD.

WARP s10? uotmu FOB Looms. (Application, filad Get 8. 1 00.)

2 Sheets-Sheet I.

We: Jysep/z whlazell ti 6'. 60765 fiz'ldaral.

No. 1|,923. Reissuad July 30, l90l. J. GOLDWELL & c. a. GILDARD.

WARP STOP MOTION FOR LUDI S (Application flied Oct. 8, 1900.)

2 Sheets-Shut 2.

' Wow.

llllmlilll UNITED STATES PATENT OFFICE.

JOSEPH C0 LD'NELL AND CHRISTOPHER. GILES GILDARD, OF FALL RIVER MASSACHUSETTS.

WARP STOP-MOTION F OR LOOMS.

SPECIFICATION forming part of Reissued Letters Patent No. 11,923, dated July 30, 1901,

Uriginal No. 637,234, tinted November 21,1899. Application for reissue tiled October 3. 1960. Serial No. SL849.

Be it known that we, JOSEPH COLDWELL and CHRISTOPHER GILES GILDARD, citizens of the United Slates, residing at Fall River, in the county of llristolnnd State of Massnchusetts, have invented certain new and useful Improvements in W'orp Stop-lllotions for Looms; and n e do hereby declare the following to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appcrtnins to make and use the some.

Our invention relates to improvements in stop-motions for looms, and particularly-to that class wherein an electrical current is employed for setting the stopmotion and is established by the breaking of one or more warp-threads. The numerous advantages arising from the use of the electrical current and magnet controlled thereby for Ibis purpose have long been recognized, in that the delicate mechanism otherwise employed run ning colitempornneously with the loom VHLS constantly wenriuo, and giving out or breaking down, so that as it whole such mechanism was more of a hindrance and annoyance to the operatives or weavers, and by their frequent stopping for repairs greatly red need the capacity of both the weavers and the ion in The main objects of our invention are 'to produce a. simple and economic slop mechanism capable of being applied to any of the ordinary looms by the usually-employed loomfixer, which mcchnnism is operated or set for operation by the establishment of on clcctrical cn rren it, the circuit of which is normally broken and only established attlle breaking of n warpthrczul, which may be immediately cut out from the loom when not in use and this, too, nnlonniiichlly and simultaneously with the stoppage of the loom, thus effecting n saving of the batteries or other source of clcctricnl supply, and, finally, which is dumble and nrrnngcd ontircly out of the way of the weavers.

Uihcr objccrls nnd wlvnninges of the invention will heminnl'ter appear, and the novel font nros oi our invention will be particularly pointed out En ilnr nppcnilcd claims.

Bcferring to the drawings, Figu re 1 is a side elevation of a portion of the loom-frame, showim so much of the loom as is necessary in order to fully illustrate our invention in its application. Fig. 2 is a partial plan view of one of the side frames of the loom, showing our invention in part. Fig. 3 is a lpngitudi nnl sectional view in detail of a portion of the invention comprising the lease-rods, circuit-rods, contact-roll, the, together with their supports. Fig. 4 is a perspective View ol a portion of the loom-frame, showing the shipper and our invention applied and adapted to operate thereon. Fig. 5 iso transverse sectional View on line 5 5, Fig. Figs. 6

and 7 show side and edge elevations of our improved form of drop-bar or detector.

It will be understood that our invention may, as will be hcrcinalte" apparent, be applied to loomshaving-anyusualdrivingmech- 7o nnism having fast and loose pulleys, from one or the other of which a belt will be carried when it is desired to stop or start the loom, or the drive-pulleys may be of the variety known as clutch or friction pulleys.

Whatever term of drivingpuliey is employed for the loom, such will be under the control of its own proper form of device to effect the stopping of the crank-shaft at the proper time; but withali varieties of pulleys there must be some style of: shipper handle or lever under the control of the operator to stop and start the loom, and it is in connection with this that our invention is employed and adapted to operate nntonnitically upon the instant that n warpthrend breaks.

In illustrating our invention we have in Fig. l shown so much oi an ordinary loomi'ramc as is deemed necessary in order to illustrate the application thereof, it being understood that otherwise the loom consists of any nsuztl well-known construction.

Between the side frames 1 of the loom we locate a pnirof angular brackets 53, the lower ends or feet of which. ere longitudinally slot- 5 iBll, as at 3, to receive the bolts 4, that pass through the said slots and side frames 1 and through the medium of which the brackets and parts carried thereby may be held in any vertically-adjnstcd position to adapt the loom 1o:

for various styles of weaving. One of the bolts 4Lthe one at that side of the loom at which the shipper is 1ocated-may be longitudinally bored, as indicated at 5, for a pu pose hereinafter referred to.

At or about their middles the brackets 52 may be longitudinally slotted, as at 6, and through the medium of adjustidg-bolts 6, passed therethrough, a pair'of L-shaped bearing-brackets 7 may be supported. The upper ends of these bearing-brackets 7 may be U-shaped, as at 8, and each may contain similar-shaped bushings 9, of anysuitable insulating material.

The bushings 9 receive the axial ends of a loose rotatable contact roller 10, made of metal, (preferably of copper,) and one of said axial bearings is provided with a collar 11, having an electrical binding-post 12, located immediately above a hole 13, formed in the foot of the L shaped bearing bracket 7. Screws 11 may be passed upwardly through the lower horizontal ends of the L-shaped bearing-brackets T, and supported thereby may be a horizontally-disposed wiper-bar 15, the same being located immediately under and in cpntact with the metallic contact-roller 10. This wiper-bar may have its upper face concaved longitudinally to conform to the roller 10 and have a textile wiping-surface 16 in contact with the roller, so that by turning the roller 10 by hand or otherwise all lint orother foreign deposit is wiped from its surface by the wiper-bar, and therefore electrical contact can at all times be most readily established between the contact'roller and certain other devices hereinafter referred to. The collar 11 being loose on the axial bearing, of the roller 11], it will be seen that the turning of the roller will not in the least disturb the relative location between the binding-post 12, carried by the collar, and the hole 13 in the bracket.

The two brackets :2 terminate above the contact-roller 10 in pairs of inwardly and horizontally disposed lugs or ears 17, which may be longitudinally slotted, as at 18, and between which are located flat parallel cir' cuit-rods 1U, spaced a suitable distance apart and preferably inclined toward each other at their upper edges. Bolts 20 pass through the circuit rods and slots 17 and serve to secure the former in position within the brackets 1?.

To the npperangular ends of the brackets is adjustablysecured, by bolts 31, a pair of in vertedL-shapcil brackets 22, the same having thei r lower ends slotted, as at 23,10 receive the bolts 21. The inner horizontal ends of these brackets are T-shapcd, and the ends of the same are connected by screws to the ends of a pair of parallel lease-rods 21, which are preferably hollow or tubular to lend light.- ness and are supported in the manner indicated. The lease-rods are-located above and just outside of the vertical planes of the circnit-rods li and over and under said leaserods the warp-threads are alternately passed in the usual manner.

At this point it might be well to describe specifically the contact d rep-bars as improved by us and which are indicated as It will be understood that while we contemplate the use of our improved form of dr0p-har, for reasons hereinafter apparent, yet we can employ any other form of drop-bar if for any reason we should desire so to do.

Our improved drop-bar 25 is made (stamped, preferably) from a blank of thin flexible sheet metal and has a general oblong shape. The same has formed within its area a longitudinal slot 25, which approximates in width that of the circuit-rods 19, but is sufficiently wider to permit an easy fit thereovcr. The upper end of the slot 25 may terminate in an enlarged eye 26, designed to loosely straddle the warp-thread. The opposite or lower end of theplot 25 somewhat gradually merges into a narrow slit or throat 27, after which the edges diverge at or near the lower ends of the terminals. This produces at the upper end of the slit or throat :37 opposite internal stop-shoulders 2S and at the lower end a flared mouth or entrance 29, the ends of the drop-bar being beveled at a. The warpthreads being in position over and under the lease-ro(ls,cach has suspended thereon a dropbar, such as we have described or of any other desired shape, those of theconstruction described having their lower split'ends sprung laterally past each other and slipped or dropped into position simultaneously upon a warp-thread and upon an adjacent circuitrod. It will be obvious that the engagement of the circuit-rods will prevent the drop-bars from being dragged from their prope position by the travel of the warp-threads, and, furthermore, that theshoulders 28, engaging under the circuit rods, will prevent them from being thrown from their position on the threads. At the same tune the shape and flexibility of the drop-bars are such as will permit them to be simultaneously removed or replaced upon the warp-threads and circuit rod by simply giving the two terminals of each dropbar a slight lateral twist in opposite directions. It will also be noticed that, owing to the location of the ltaise-roi'ls with reference to the d rop-bars and to the shape which we give these drop-bars, each drop-bar is entirely free from contact with the warpthrcads on eitherside of its own warpdhrcad and can only come in contact with them (if at all) by jumping upward while the loom is in motion. By this arrangement we prevent the injurious chafing of the warp-threads which takes place where each thread passes [116 rop-bars of the two adjacent threads and is normally in contact with one or both of these drop-bars [twill he understood that the electrical current is made and. brolien by contact between any one or more of the aforesaid drop-bars 25 and the contact-roller 10,

the said drop-bars being normally snspcmioii out of such contact and the circuit therefore broken or incomplete by the lrnsion [ho Warp-threads In the event tin-it one i threads should break ti o iiroplmr snp thereby will fail, being guiiiml in its ment by the circuit-roll iii, so Hi i iho some will pass to one side of. the ccnicr oi sniil roller,the edge of said drop her falling against the latter. This movement is aided by the beveled ends a of the drop-bars, which cause the latter to glance upon contacting with the surface of the roller.

28 designates the usual shipper, fox-nun] oi spring metal, as in the ordinaryconstrnciion of loom, and 29 the usual notched pinto by which it is guided nml also locked in position to set the loom in motion through the inmliu In of the belt-shifter 30 and ils operntirlover 31, the latter being forhcii to loosely engage the shipper.

A bracket 32 is bolted to the side lrnme i at the inner side of the shipper and tiresome supports in this on t-of-thewny position a mngnet box or case 33, in which is located an electromngnet 34:. In the upper front corner of the box or case 33 in suitable bearings 35, provided for the purposmis piroto in orlnature-iever 36, the inner coat of which sup ports an armature fl? nml ihr outer imiliiiil of which may have 2t series of sinnii bolus (LR. In front of the mngni'it box or case may be located a stud 39, having it contact-spring;4O extending laterally therefrom and lying in such position with relation to the shipper as to be in electrical contact therewith when said shipper is thrinvn ontwnrd into the lot-iring-noi'ch of the guide-plate, and therefore the loom set in operation. \Vhcn in this position, it will be possible for the drop-inn; to complete the electrical Circuit by dropping into contact with the motnliic nontool-roller 10; but when the shipper is nt the inner curl lending therefrom to the pole in the mount-t is an insulated cirouitwire i".

Loosely hung, and therefore nil-opted to swing, on a stmi-bolt 415', that projects horizontnliy from the side frame 1 immediately below the guide-plate, is an L-shnpe l knockoif 41, the lower horizontal oml of which projects laterally to a point oppnsilc nnri behind the shipper when the intior is in isopnrnl ire pos1tion-nnmciy, in engagement with the notch in the guiiieqiinlo-nnci has l ililillll on its upper shin n pnir of studs 15 in pivoted :1 rcnrwnlilly-disposed gravi it the free cu l of hich may be i no siannliloroil, us til i This latch l i iii, and n i" it Wire rod if) i i the mi in unit to n convenient rlorntiin n the nrninture-levcr, 4 :rre is a unity of motion between the hitch and armature-lever, which is directed by the latter. It will be obvious that i the magnet attracts the armature, as when the circuit is completed or established, the nrnmtnroevcr will rise at its outer end and canto :i similnr movement upon the part of the int r-h, which thus being elornieil into the pull: of the lay is struck thereby on. its forward mm'ornontnml, to -gel her with the knockoil, is forced lorwnrrl, so ihut ine lnttcrstriking the shi per (iisengugcs the some from the notch in the onhlepiulc, permitting the ship per to immediately swing inward and in do ing so break contact with the content-spring and npernto the belt-shifter to stop the loom. The beiicry it. or other source of electrical energy may be conveniently located, preferuoly Leion' the liner, nod from one of its poles n lonri the insulated circuit-wire 5] and iron; the other the insulz'ttol oircuit'wiro 52f iioih wires lie but on the ilnngcs of the frame 1 f tllii airs snpportmi where necessary, us in changes of direction, suitable eyes o The wire 51 passes to the magnet and in doinz: so posses between the frzune l and lungnot-box-supporting bracket, which latter may be grooved on its inner vertical face or side, as inriicntclfi at M, to accommodate the wir v The runniining cirouiicwire .52 passes thrrmgli the slim sniil guide-eye: 5 by which it is nominated to the outer uinl oi' the tubulnr bolt 1 through which it is pnssou, stud thus sum-1i from living puss ti nronml [he lrnmo :nni mposori, From the inner end oi 4.3 the wire may be passed through eye 5! depending from ihe under s1 oi the :nljuccnt bracket :3, (by which it is made to conform to the shnpe of the bracket) through :1 groove 55, formed in the angle of the lnutriiet, iiilil is iinnlly secured to the binding-post i2 oi the (:oiiitr 11, mounted on the metallic contnct'rolv Tracing o 7 oil t will in: soon ihnt win-n one or mow; ll ars full nncl contort Will the "lil i i tlil'li'ltliti Clill 'ii iilii lgl l lflii tilt-try or o u stun-co ol' oirri gui supply. mar-firs through wire 5! to tin innner, iilliillitljli the urnuiiuro :illil mugnrt to the short wire lvzniing to the springcontzict, thence through. the shipper into the shic l'rnmo i, in the bracket 2', to the circuiti'OllS, down through the l'nilon ilrop bur or bars to tho contact-roller il to the colinr 1i, binding'post if to ill( wire 52. nnri inn-k to the buttery or oihrr source.

it ii ill be :ippnrontthat tin invention when l niliwi in n loom requires prnrthrnily no atroll to free the same from dust and lint be- I log sufficient, and that no leakage of electricity can occur by a relaxation of the tension of the warp-threads when the machine is not in operation, as in such instances the electrical arrangement is entirely out out.

Having thus fully described our invention, what we claim is- 1. As an article of manufacture, adrophar formed of sheet metal and having 2. Ion gitudinal slot provided with lower shoulders and terminating in a narrow slit or throat, the lower portion of the latter being flared, as set forth.

2. As an article of manufacture, the heroin-doscribed flexible sheet-metal drop-bar having a longitudinal slot, said slot atits upper end terminating in an enlarged eye, and at its lower end reduced to form a narrow slit or throat, the opposite edges of which, above the slit, are provided with stop-shout ders, and at their lower ends diverged to form a flared mouth, substantially as set forth.

3. An electrically-operated stop-motion for looms, comprising a drop-bar formed of flexible metal and having a longitudinal slot, the lower end of the slot being reduced to form opposite internal shoulders, and below the same a narrow slit or throat of less width than said slot, said'drop-bar being normally supported by a warp-thread passing through said slot, a lower contact device, and a circuit-rod arranged to guide said drop-bar in its movement toward said contact device, substantially as set forth.

4. An electfinally-operated stop-motion for looms comprising longitudinally arranged approximately parallel electrical circuit-rods, a lower intermediate metallic electrical conductor, and opposite series of drop bars looselyembraciugsaidcircuit-rodsandadapted to be normally supported out of contact with said electrical conductor by the warpthrcads of the loom, said circuit-rods serving to guide said drop-bars in their movement toward said conductor, substantially as set forth.

5. In an electrically-operated stopanotion for looms, the combination of a pair of flat electrical parallel circuit-rods, a lower rotatable contact device also in circuit, and opposite series of drop-bars-straddling their respective circuit-rods normally supported out of contact with said contact device by the warp-threads of the loom, said drop-bars having lower beveled ends.

6. An electrically-operated stop-motion for looms comprising a pair of flat parallel circuit-rods converged to ward their upper-edges, a lower intermediate circuit contact-roller, and opposite pairs of drop-bars straddling the circuit-rods and arranged to be guided thereby, said d rep-bars being normally supported out of contact with said contact-roller by the warp-threads of the loom, substantially as set forth.

7. In an electrically-operated stop-motion for looms, the combination with an electrical circuit-rod, and a lower contact-roller also in circuit, of the herein described improved drop-bar formed of thin, flexible metal, and having a longitudinal slot loosely receiving said circuit-rod and terminating at its upper end in an enlarged eye, and at its lower end in a narrow slit or throat, which is flared at its lower extremityand provided at its upper end with internal stop-shoulders, said bar being normally held out of contact with said roller by the warp-threads passing through said eye, substantially as set forth.

8. An electrically-operated stop-motion for looms comprising an electrical circuit-rod, drop-bars having parallel arms loosely embracing the same, a loose roller therebelow in the path of said drop-bars, and also in circuit, and a wiping-bar parallel with said roller and arranged to contact with the latter, as set forth.

0. An electrically-operated stop-motion for looms comprising a supporting-bracket, an electrical circuit rod supported by said bracket, drop bars loosely embracing the same, a second bracket adjustably supported by said former bracket and having bushings, a loose roller mounted in said bushings and located in the path of said drop-bars, said roller being also in circuit, and a wiping-bar arranged parallel to and in contact with said roller and against which the latter may be rotated, substantially as set forth.

10. An clectricallyopcratedstop-motion for looms, comprising a supporting-bracket having opposite ears or lugs, circuit-rods supported by said ears or lugs, a second bracket adjustably supported by said former bracket, a contact device mounted in said second bracket, and drop bars loosely embracing sgid circuit-rods and adapted to be guided by t e latter, substantially as set forth.

11. An electrically-operated stopmotion for looms, comprising an electrical circuit-rod, drop-bars loosely embracing the same, a loose roller mounted therebelow in the path of said drop-bars and also in circuit, and a wiping bar parallel and arranged to contact with said roller and against which said roller may be? rotated, said bar having its contacting-sur face longitudinally grooved or concavcd to conform to the surface of the roller and provided with a textile covering, as set forth. a

12. An electricallyoperated stop-1notion for looms, comprising a supporting-bracket, a pair of parallel circuit-rods supported thereby, a lower contact device also in circuit and supported by said bracket, adjustable brackets secured to said former bracket, a pair of lease-rods supported by said latter bracket and arranged over and at opposite sides of said circuit-rods, drop-bars having parallel arms straddling the circuit-rods and designed to contact with said contact device, said circuit-rods also serving as guides for said dropsubstantially for disposing warp-thread sections in different planes, and a bank of drop-bars for each section, each drop-bar being suspended from a warp-thread and capable of free movement transversely of the warpthreads, and so shaped that the drop-bars of each bank are normally out of contact with the threads \vhereon are suspended the drop-bars of the Oil! r bank or hanks, whereby chafing of the lh reads is avoided.

21. A loom, having, in combination, means for dividing a series of warp-th reads into sections disposed in different planes, and drophars arranged in a plurality of banks, each drop-bar beingsuspended from a warp-thread and capable of free movement transversely of the warp-threads, and beingso shaped that each thread is normally out of contact with the drop-bars suspended from the two adjacent threads, whereby chafing of the threads is avoided.

22. A loom, having, in combination, a plurality of banks of drop-bars, each drop-bar being suspended from a. warp-thread and capable of free movement transversely of the warp-threads, leasing mechanism which disposes the warp-th reads into sections in different planes, and drop-bars so shaped that the drop-bars of each bank are normally out of contact with the threads whereon are suspended the dropbars of the other bank on banks, whereby chafing of the' thread is avoided.

23. A loom, having, in combination, means which divide the warp-threads iutointcrsecting planes, guides located beneath the Warpthreads on opposite sides of the intersection between said planes and out of vertical alinement with said dividing means, and a dropbar for each warp-thread, said drop-bars beiug arranged in banks positioned respectively by said guides, and suspended respectively from said warp-threads on opposite sides of said intersection, each drop-bar terminating at its upper end below the plane of the warptl-reads which is intersected by the thread from which said drop bar is suspended, whereby each drop-bar comes in contact only with the warp-thread which supports it, and is free to move vertically.

:34. A loom, having, in combination, means which cause sections of the warp-threads to cross each other, and a drop-bar for each warp-thread suspended from its warp-thread at a point where said thread passes below said crossing and capable of'free movement transversely of the warp-threads, each drop-bar tcrminatingat its upper end below the plane of the \\'arp-thrcads which is intersected by the thread from which said drop-bar is suspended, said drop-bar dropping away from all of the warp-threads on the occurrence 0 a fault in its thread.

:35. A loom, having, in combination, means which cause sections of the warp-threads to cross each other, and a detector for each warpthread which engages its thread at a point on one side of said crossing,'being located relatively to said means for causing said crossing so as to have free vertical movement, extending from said point away from all of the warpthreads, and adapted and arranged to move away from all of said threads upon the oc; currence of a fault in its own thread, each section of warp-threads passing beyond and outof contact with the ends of those drop-bars which engage the warp-threads of another section.

26. A loom, having, in combination, leaserods which dispose the warp-thread sections in ditferentintersecting planes,guides located beneath the warpdhreads on opposite sides of the intersection between said planes and a thin (I rop-bar for each warp-thread, said dropbars being arranged in banks positioned respectively by said guides, and suspended on opposite sides of said intersection and capable of free movement transversely of the warpthreads, whereby each drop-bar Where its thread passes through it occupies a plane substantially parallel to the path of its thread, each drop-bar terminating at its upper end below the plane of the warp-threads which is intersected by the thread from which said drop-bar is suspended, whereby each drop- 9 bar comes in contact only with the warpthread which supports it.

27. A loom, having, in combination, a plurality of banks of drop-bars, each drop-bar being suspended from a single warp-thread and capable of free vertical movement, and means for disposing the warp-threads so that each thread is normally out of contact with the drop-bars suspended from the two adjacent threads, whereby chafing of the threads is avoided.

28. A loom, having, in combination, means for disposing warp-thread sections in diiferent planes, and a bank of drop-bars for each section, each drop-bar being suspended from a warp-thread and capable of free vertical movement, and so shaped that the drop-bars of each bank are normally out of contact with the threads whereon are suspended the drop bars of the other bank or banks, whereby chafing of the threads is avoided.

29. A loom, having, in combination, aplurality of banks of drop-bars, each drop-bar being suspended from a single warp-thread and capable of freemovcment vertically and transversely of the warp-threads, and means for disposing the warp-threads so that each thread is normally out of contact with the drop-bars suspended from the two adjacent threads, whereby chafing of the threads is avoided.

30. A loom, having, in combination, means for disposing warp-thread sections in differ; ent planes, and a bank of drop-bars for each section, each drop-bar being suspended from IIO a warp-thread and eapable of free movement names to this specification in the presence of vertically and transversely of the waiptwo subscribing witnesses. 7 threads and so shaped that the drop-bars of each bahk are normally out of contaet with GH-DARD 5 the threads whereo'n are suspended the dropbars of the other bank or banks, whereby Witnesses:

V chafing flf the threadsis avoided. ARTHUR C. COGGESHALL,

In testimony whereof we have signed our THOMAS SIRVIS.

t No.

' DISCLAIMER.

11,923. (Reissue, )-Jnsep/z Caldwell and Christopher Giles Gildard, F all River, Mass. WARP STOPl\'lOTlON FOR Looms. Patent dated July 31), 1901. Disclaimers filed August 2, 1913, by the assignee, TM Coldwdl Gilda/d 00., and the licensees,

(rumpton if li'nowles Loom Works and Drape? Urn/apany.

Enter their disclaimers, each to the extent of its interest in said Letters Patent 1 To claims 19, 20, 21, 22, 24, 27, 28, 29, and 30.

[OFFICIAL GAZETTE, August 12, 1913.]

Disclaimers in Reissue Letters Paten l l l Disclaimer in Letters Patent Reissue N0. 1 1,923.

DISCLAIMER- 1LH23. (Reissnv.)-'ln.we lfl (o/dwell and (l/u-ietopllw' Gilm- (IV/(lard, Fall Rivmx Mass. WARP STOP-MOTION FUR Looms. Patent dated July 30, [901. D1;-

claimers filed January 19. 1915, by the assignee, T/m C'nlduzlZ-Qi/dard (10.,

and the licensees, T'OTI IZ'tUII &- lfmrw/ex Loom IVOTZS and Draper Umnpan q.

llntm' their disvlui|nm'- mu-h tn tlw vxn-nt of its interest in said Low-1's Patent. 0

claim 25.

I /{fir-[al II'TIECIIP, January 136', 1.915.]

Images