US1096890A - Stop-motion for knitting-machines. - Google Patents

Description

W. w. BURKE. STOP MOTION FOR KNITTING MACHINES. APPLICATION FILED MAY 10A 1913.

1,096,890 I Patented May 19,1914.

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W. W. BURKE.

STOP MOTION FOR KNITTING MACHINES.

APPLICATION rum) MAY 10, 191;;

4 SHEETS--SHEBT 2.

Penented May 19, 1914.

W. W. BURKE. v, STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED MAY 10. I913.

Patented May 19, 1914 4 S HEETS-SHLET 3.

a? I l W. w. BURKE. STOP MOTION FOR KNITTING MACHINES APPLICATION FILED MAY10,1913.

1,096,890. Patented May 19, 1914.

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rirrnn srntrne rntrnrnr oirriuiin \VILLIAM 'W. BURKE, OF BENNINGTON,'VER1VOl\lT, ASSIGNOR 0F ONE-FOURTH 'lU JAMES E. BURKE AND ONEFOURTH T0 ALEXANDER J. COOPER, BOTH 0 BEN NINGTON, VERMONT.

STOP-MOTION FOR KNITTING-MACHUJES.

Ii .tltlltid'iltitl.

Specification of Letters Patent.

'Ilnt cin'lcil litany iii. iii i i.

Application filed May 10. 1913 Serial No. 766,685.

and useful Improvements.in tltop-idotioim; for Iinitting-Machines, oi which the following; is n specification.

This invention relates to an electric circuit (losing device particularly adapted to he need in muehinerl employing :1 thread or strand of ynrin such as knitting machines, said device emhodjring in its ;construction :1 drop device which is ndnpt'lil to open and elosc said electric eireuit, lhedeviee being so eoImiruuti-d and arranged than; when :1

threud or yurn hreuks 'or when nhuormul tension is hroupght to hear upon said thread or yarn, the drop device will he operated to close the circuit. Said circuit comprises un armature and an eleetronmgnet, the airline ture being mounted upon it tripper forming it part of a stop motion device which is so constructed thilt when the circuit is closed and the nrnmture drawn toward the magnetot the electronhugnet, said tripper will operute to release the stop iiifitiOlllllQtfilltliliSll'l und allow the same to operute 'to move the belt from the tight mlley to the loose pulley on the driving shaft and thus stop the machine. i i

In the embodiment of iny invention hereinafter. described I have shown my improved electriccircuit closing devi :e ineonneetion with :i knitting machine and a stop motion therefor, but tilQ'SilIllQ is adopted to he used in iiny machine employing :l strand of or a thread in which it is desirable to have the machine stop when the thread breaks or the supply from the mess ofthrend runs out or when abnormal tension is applied to said thread or yarn.

in the preparation of yarn for use in o.

knitting machine for knittin a fabric the some is ordinarily run through a winding machine in which the yarn is taken from a thread nines, known as a ftcone, and is passed thronglfa scraper which removes the sup rtluons yarn and detects any large knots and stops the feed of the yarn from the cone when such large knots occur, said yarn pass"- ing from the cone to the scraper and from the scraper to a hohhin upon which it is wound and these bobbins, with the yarn yarn l i l l l l l wound thereon, are then used to .eupply yarn to :1 knitting}; nnu-hine. liy my improved circuit elm-dug device. in .-omhinntiou with u .-:r.'ruper interposed hetween said circuit eles inc derive and u ('Uilt' oi. yarn, superfluous waste i removed from the yarn :uulynru with larg hnoh: prevented from feeding to the knittingi1eitrumentoiitice; with out tirst panning the yarn through it win/lin g llliti'illllt. hereiuliel'ore (lLHl'l'ilJtTtl, prior to using: the moo in d knitting innchine. nod thus one o nu'ntion :ind nuichine t: eliminated, wherehy u lurgze unmunt oi time and expenre is illlt'i'ii.

'lhe ohieet of this invention, theretore, is

to euihody n e knitting onu'hiue :i ynrn scraper for removing the fitll'flli'illi ltS ynrn lrom strand of the mime :15 iii liming; t ed into sold machine. said temper also being no adjusted as to prermn': the pursiigge of yarn into n mneliiuc irliemn hirer knot occurs in the yarn; and to combine with said s raper on electric circuit closing device of the rhurmiter hereinhel'ore set forth tQlQZ lt'iitll with it stop motion meelninisnn all so arr-tinged Hid eomstructed that the niuehine will he etcpped immediately when u threud or yurn hr eeke or when uhnornml tern-d n is: lnought to hear upon said thread or yum: or hell the. supply of thread or ynrn runs: out. The invention consists in the combination nod arrangrenwnt of parts set forth in the following s])eeitieution and particularly pointed out H1 the claims thereof.

Referring; to the drawings: liigure i is a plan. View, partly in section and broken away, of :1 stop motion mechanism for :1 knitting machine with my improved electric circuit chising device attached thereto. Fig. 2 is; :1 detail neetioi'iol elevation tulten on line ot fl igi '1. Fig; 3% is; :t perspi'retire View of the electric circuit closing, device. Figr. -1, is n pitltl View of said electric circuit dosing device. l ig. 5 a "front elevation of the electric circuit ciosin device with the ports in their normal .iosnion when the yarn is feeding to the [1130 due. Fig. (3 is n front el ration ot the electric circuit, elcsing derive simiinr to :ifiittf. 5, partly lnulit'ii away and shown in section and with the parts in the position hemmed thereby when nhnori id teneion is implied to the yarn. ll ig T is u detuil end elevation of the circuit closing device as viewed from the lett of Fig.5. Fig. 8 is a sectional elevation taken on line 88 of Fig. i. Fig. 9 is a detailed end elevation of the circuit closing device -as viewed from the right of Fig. 5. Fig. 10 is a rear elevation of the stop motion mech anism with parts broken away to save space in the drawings. Fig. 11 is a front elevation of a modified form of circuit closing device with means for cutting ofi the yarn attached thereto. Fig. 12 is a sectional elevation taken on linelQ-IQ of Fig. 11. Fig. 13 is a front elevation of the circuit closing device with another form of means for cutting off the yarn attached thereto.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, referring to Figs. 1 to 10 inclusive, 15 is the frame of the machine consisting of side standards 16 and 17 suitably connected together by a cross head 18. The main driving shaft 19 is journaled to vrotate in bearings 20 and 21 fast. to the 7 frame of the machine and is rotated b ranged to rock in means of a pulley 22 fastto the shaft 19, a loose pulley 23 being journaled' to rotate upon the shaft 19 adjacent to the pulley 22. The pulley 22 is driven by means of a belt 24. A bevel gear 25 is fastened to the main driving shaft 19 and meshes into another bevel gear 26 fast to a vertical shaft 2*, said vertical shaft being utilized for rotating the needle cylinders 28 and 29, Fig. 2. The manner in which these needle cylinders and co-acting parts are constructedvand operated from the shaft 27 is clearly described and shown in patent to i/"i' illiam T. Barratt No. 1,000,362 dated Augustjl5, l9ll,stop motion for knitting machines, to which reterence may be had. P

The stop motion mechanism is illustrated particularly in Figs. 1, 9, and 10;. Referring now to theseijfignres it will be seen that a wheel 30 is journaled to rotateupon a stud 31 fast to a bracket 32 which is; in turn, fastened to the cross head or tie 18 An arm 33 is pivoted at 34 to the wheel. 30 and is held against a stop screw 35 by a spiral spring 36. A plurality of these arms 33 and n echanism connected thereto connection with the wheel 30. but as they all operate in substantially the same manner the following description of the mechanism connected with one of said arms will be sutiicient. A red 37 is pivotally connected at 38 to the wheel 30. Said rod is arranged to slide in a bracket fast to the cross head 18. The free end of the rod 37 bears against an arm 40 whichis fast to a rock-shaft; ll arthe frame of the machine. Ranches 4 are fastened to said rock-shaft by means of which the same may be operated to ship/tho beihand the machine by hand. it tripper arr also fastened to said rock is vided with a not-ch45 in its his n I proan .1 i l nee one and may be used in 7 to disengage the tripper arm 44 from the arm 46 the rod 47 will be moved to shift the belt from the fast to theloose pulley thus stopping the machine. Said rod 47 is adapted to be operated to stop the machine by'a. trippcr mechanism which I will now proceed to describe.

Afdog 51, constituting a tripper, is fastened to a vertical shaft 52 and is constructed to engage a notch 53 in the end of the arm 33, so that when the shaft 52 is rocked toward the right (Fig. l), the arm 33 will be disenga from the dog 51 and the stop motion will be actuated to stop the machine as hereinbefore described. The shaft 52 is rotatably mounted upon the bed plate 54 and is rotated by a spring 55 in a direction to bring a pin 56 fast'to said shaft against a bracket 57 in the lower end of which the shaft 52 is rotatabiy mounted. The shaft 52 is rotated the opposite direction to that in which it is rotated by the spring 55, or toward the: right (Fig. 1)., to disengage the dog 51 from. the arm' 33 by an armature lever 58 which is; actuated by .an*electro-- magnet, 59 forming" a part of an electric cirsuit 60. The electromagnet 59 is fastened to the cross hefid 18 and is. connected by an electric w'r'e 61 (see'Fig. 1) to one of the terminals v of the circuit closingdevice 63.- The other terminal 64 of said circuit closing device is connected by a wire 65 with a bat tery 66 from which a wire 67 leads to a binding screw 68 on the armature lever 58.

The free endof the, armature lever 58 normally contacts with ametal plate 39 w "ch is connected bya wire 70 with the magnet 59.

The circuit closing devibe 63 has a base 71 which is fastened to the cross tie l8 and on said base is mounteda block 72 of insulat-\ ing material in which is slidably mounted a drop device 73 consisting of awire bent in U-shapc, the legs i hconstituting contact points and the closed end being bent at 75 to form a guide for a strand of yarn 7 6.

When said strand of yarn breaks or the supply runs out or when an abnormal tension is applied thereto, the legs 74, 74 Wlll be caused, in'a manner hereinafter described,

stop 5 ta. the contacts 77 which preferably consist'of mercuryinclosed in chambers 78 within the base 71': When the circuit is open the parts will be lathe position 11111:

trated in Fig. 1. When the circuit is closed .by the drop wire 73 the electromagnet 59 will be energized and the armature 5S drawn toward the same to rock the shaft 52 and disengage the. drop dog 5.]. from the end of the arm 33, whereupon the stop motion incohanis n, will be actuateth hereinbefore described, to move the belt 24 from the fast pulley 22 to the loose pulley 25' and thus stop the machine.

Referring now to the circuit closing device illustrated in Figs. 3 to J inclusive, the drop wire 75 is held out of contact with the contacts 77 by the strand of yarn 76 which passes from a yarn mass 79 through a guide eye 80 provided in the auxiliary frame 81,

ttlnrough a yarn scraper 82 to the guide eye machine. scraper blades 89 and 90 fastened by screws or bend 75 formed in the drop wire 73, thence upwardly through a stationary guide eye 83, through a movable guide eye 84- and through stationary guide eyes 85, 85 8G and 87 to the primary needles of the knitting; The scraper 8:2 consists of two 91 and 92, respectively, to the block 72. The screws 91 and 92 pass through slots 93 and 94, respectively, in the blades 89 and 90, so that said blades can be adjusted vertically or one can be adjusted toward the other to vary the space 95 between their adjacent edges. Amarossbar 96 is fastened to the blade 89 and forms a stop to prevent the waste yarn from passing upwardly through the blades 95 and becoming entangled in the circuit closing mechanism located beyond saidqscraper. A bar 97, preferably of porcelain, is fastened to the blade 89 and constitutes a 'guide for the thread and by raising and lowering the blade 89 the drop wire 73 and its legs 74. will be. raised or lowered to move said legs or contact points away from r toward the mercury contacts 77. The guEde eye 83 is stationary and is fastened to he block 72 and in such a position relatively to the drop device that the thread or yarn 76, as it passes from the guide 75 to the guide 83, will be held in a substantially vertical direction. The object of this construction is to prevent the vibration of the thread while it is being fed into the niachine, which vibration would occur if the thread extended in a. substantially horizotnal instead of a vertical direction from the drop device to the thread guide 83, but when the thread is laid in a vertical direction this vi 1' 'atio'n of the thread is prevented. A vibration of the thread or yarn would lend to the contact points 74 making accidental contact with the mercury contacts 77 when the thread had not broken or when abnormal tension was not applied thereto, which would render the device inaccurate and unreliable.

The rhovable guide eye 84 is fastened to a Ushaped lever 98 pivoted at 9/?) to the block This lever has an arm 100 thereon which .tive positions illustrated in Figs. l, 2. I u l v n l, o and 8, it will be seen that the drop wirev '73 1s ralscd by the'tcnslon of the yarn 76,

projects over the. closed end of the U-shapcd drop wire 73 and forms a stop ihercl or to prevent said wire from being; moved away from the contacts TY more than a certain distance. This distance can be regulated by an adjusting); screw llll which has screwthreaded engagement with the lever J and is adapted to engage the block T2, so that by turning said scrtuv in one direction or the other. the free end of the arm lot) will be raised or lowered and thus the position of the drop wire 73 delm'mincd- "ihe lcveri 9b is provided with pins 10:2 upon which may be placed slotted plates 10;} in order to apply the proper tension to the yarn To to hold the leccr Slb downwardly in substantially the position illustrated in Fig. 5 with the screw .lOl. in contact with the bloclt 72 under normal conditions or when the yarn is subjected to a-uorum l tension. Dill'crcnt sizes oil varn require more tension and for larger shes two or more plates may be )laced upon the pins H12. in practice the weight of the lever Uh is suliicient tor certain sizes of yarn; then a plate 103 placed on the pins M2 for larger sizes and another plate .10? is placed on the pins .lUQ for still larger sizes, making it necessary to employ only two plates .t'orall sizes of yarn ordinarily used in knitting machines. The drop wires 73 are also made of dill'crent sized wire in order to drop quickly and have the contact points 'T-i engage the mercury contacts 77 without loss of time when the yarn lu'ea s, as, for instance, when the yarn breaks between the drop wire 73 and the needles it is necessary that ,the drop wire should be heavy enough to pull the weight of the yarn left between said drop wire and the broken end of the yarn ,witlu'ult delay and for a heavier yarn it-takes a heavier drop wire than for in light yarn to perform function. Therefore, three sizes of dro wires are utilized for all sizes of yarn ordinarily used in. a knitting numhine.

The general operation of the mechanism hcrc'inhetore specifically described is as fol lows: Assuming! a knitting machine to he in operation and the parts to be in the relar),

so that the contact points 74 are out of contact .with the contacts T7 and therefore, the electric circuit 60 is open. The guide 97 is'at such a height relatively to the drop wire 73 and the arm 100 is in such a position relatively to said drop wire that the contact points, while close to the contacts 77; do not engage the some. The adjusting screw .llll upon the lever 98 contacts with the block 72 at its lower end, "lhc yarn extends in substantially a horizontal direction from the guide 97 totho guide 75 of i the (lIOI') wire 72: than said vm-n 7(3 or- Wire with the contacts 77.

tends in a substantially vertical direction to l addition to the guide eye 83 for the reason hereinbefore set forth, vi7.., to prevent vibration of the yarn during the operation of the machine and accidental contact or the drop From the guide eye 88 the yarn extends through the guide eye 84 and from the guide eye 8% to the guide eye 85 in such a direction as to for-111 a-bight, '(see Figiiti). The reason for this arrangement is that when an abnormal tension is applied to the yarn the lever 08 will move'upwardly from the position illustrated in Fig. 5 to that illustrated in Fig. 6. At the same time the arm 100 will positively push the drop wire 73 downwardly to engage the contacts 77 and close the electric circuit. When the wire 73 is thus pushed downwardly by the arm 100, it is evident that yarn must be paid out to said drop wire or the device will become locked and by fit ' invention is ,illustrated which includes the arrangement hereinbeforc set forth by which a bight is obtained in. the thread 76 adjacent to the thread guide Set this yarn can be paid out to a sufiicient extent so that no locking of the mechanism by said yarn will occur. Thus, when abnormal tension is applied to the yarn it will be understood that the lever 98 will be rocked on its pivot from the position illustrated in Fig. 5 to that illustratedjin Fig. 6 and the arm 100 will force the wire 73 downwardly until the contact points 74 engage the contacts '77 and complete the circuit. As soon the circuit is completed the armature lever 58 will be.

drawn toward theniagnet 59, causing the shaft 52 to roclmand the" tripper 53 to re lease the arm. 33, whereinaon the spring'36 willmove the arm 33 and the wheel 30 so as to move the rod 37 to cause the arm 4-1 on the rock-shaft 4:1 to become disengaged from the yarn 46, whereupon the spring 49 will cause the rod 47-120 move the shipper arms 50, thus moving the belt from the fast to the loose pulley andstopping the machine. If the yarn should. break, then the drop Wire 73 will, of its own weight, drop until the contact points 74 engage the con 77, completing the'circuit and causing motion mechanism. to be operated The samefwould rn ran out.

tacts the stop as hereinbefore described.

be true if the supply of ya It will be understood that one of the ci'rcuit closing devices heroinbcfore described will be supplied for each feed of yarn in a knitting machine and also that the circuit,

closing device is applicable to any marlllhe employinga strand of thread or yarn for the purpose of closing an electric circuit to operate a mop motion when the tension be"- comes abnormal upon said thread or yarn or when the thread or yarn breaks or when the supply of thread or yarn runs out.

In. Figs. 11 and 12 a modificatiorr'of my in the mechanism hereinbefore de-' scribed as constituting a circuit closing device a mechanism for cutting the yarn.- Referring to these figures, 82 is the 72 the block, 71 the base, thread. guide, 84 the movable thread guide, 98 the lever to which the movable thread guide 84 is fastened, said lever being pivoted at 99 to the block .72. The lever 98 has an arm 104 which is connected by a link 105 to a movable cutter arm 106 pivoted at 107 to the stationary cutter 108. The stationary cutter 108 is fastened to the scraper blade 90. When abnormal. tension is applied to the yarn the lever 98 will be actuated as hereinbe ore described and Will be rocked upon its pivot 99, causing the arm 10 1 to able cutter 106 will be rocked uponits pivot 107 to coact with the stationary cutter 108 and sever the yarn, whereupon the drop wire will descend and'close the circuit and the machine will be stopped by the stop mechanism as hereinbefore described.

In Fig. 13 a modification of the cutting mechanism is illustrated in which the lever 109, corresponding in function to the lever 08, has an arm 110 thereon to which a cutter 111 is fastened, said cutter being adaptedto coiiperate with a stationary cutter 112 fast to the scraper blade 90. vlVhenthe lever 109 is rocked by abnormal tension 'on the thread 84;, as hereinbefore described, said movable cutter will be caused to engage the yarn 76 I and cooperating with the stationary cutter 112 will sever said yarn, whereupon the drop wire 7;. will descend and close the circuit, thus causing the stop-motion to be operated to stop the machine, as hereinbefore described.

It will be understood that when the armature lever 58 is drawn toward the magnet 59, as hereinbefore described, when the cir .cuit is closed, the free end of saidarmature lever 58 will move along the insulated plate 69 until the armature lever is within close free end of said armature lever will slide ofi? of the plate 69 onto the block material 69'.

nism will be actuated, as hereinbefore' described, and the circuit will be left broken .coming'to rest with its free end on the insu- ..lating plate 69, whereby the electric circuit will not be rundown.

. Having thus described my invention, what I claim and desire by Letters Patent to 'secure'is: 1

1. A circuit closing device-having, in'cbmbination, an electric circuit including a drop device adapted to open and close said circuit and constituting a guide for a strand of of insulating Thus the stop motion mechascraper, 83 the stationary descend and through the link 105 the movproximity to the magnet 59, whereupon the 76 which is guided by the guide eyes 83 and I by reason of the armature lever58 finally will be finally broken and thus the batteries yarm a plurality of guides for said yarn and means actuated by an almormal tension on, said yarn adapted to engage said drop device and move it; to close said circuit.

2. it circuit closing device having in cone hination, an electric c rcuit inclmling a. drop device adapted to open and close said circuit and constituting a guide for a strand of yarn, a pluaility of guides for said ya rn, a lever adapted to engage said drop device and a guide tor'said yarn n'u'au'ztcd on said lever whereby, when nruler abnormal tension, said lever may he rocked by said yarn to move said drop device to close said circuit.

3. A circuit closing; device having, in cominnit-ion. an electric circuit including; a drop device acapted to open and close said circuit and constituting a guide for a strand. of yarn a stz'itionary guide for said yarn at, one side nil? said. drop device, a movable flttitlt! for said yarn on the opposite side of said drop device and means connected with said movable guide and engaging said drop device adapted tohe acuiated by an abnormal ten sion on said. yarn to move said drop device to close said. circuit iii) A. circuit closin device having, in com- 1 nation, an electric circuit LilClllQllIlg a drop in 'ice intaptxed to open and close said circuit and ccmatituting a guide for a strand of device, another yarn guide interposed between said movable guide and said drop device audnieans connected with said movable guide and engaging said drop device adapt;- ed to he actuated by an abnormal tension on said yarn to more said drop device to close said circuits i 5. A circuit. closii'ig device having in. comhinatioi an electric cir uit, inii' lnd'ing a drop device adapted to open 1 close said circuit and constituting a .1 ;e for a strand of yarn a statimmry guide for said yarn at one side o1'said drop device a movable guide For said yarn on the opposite side of said drop derictu another yarn guide interposed he tzvrccu said movable guide and said drop de vice and clevattal above said movable guide and drop device and means connected with said movable guide and engaging said drop tl iw'ltt. iyjitcd to he :H'iiltltltlil by an abnormal tension on said yarn to move said drop device to close. s" 1 :ircuit.

6. A. cu :urt ch rug device having, in cone hiuaiion, an electric circuit including a drop device adapted to open and close said circuit; and constituting a guide for a strand of yarn a plurality of guides t'cr said yarn, a lever adapted to engage said drop device. a pivot; for said lever means to vary the weight oi? said lever one side of said pivot and a guide for said yarn mounted on said lever whereby when under abnormal tension said lever may he rocked by said yarn to move said drop device to close said circuit.

7. A circuit; closing device having; in comhinatiom an electric circuit. including' a drop device adapted to open nd close said circuit and constituting a. guide For a strand of yarn, a plurality of guides for said yarn, a lever adapted to engage said dropdevice, a pivot for said lever, a weight adapted to be dctacha'oly fastened to said lever at one side of said pivot and a guide for said yarn mounted on said lever, whereby when under abnormal tension said lever may he rocked by said yarn to move said drop device to close said circui 8. A circuit closing device having, in com bination, an electric circuit: including two contacts, a drop device adapted to engage said contacts and close said circuit, said drop device constituting a guide to- .a strand of yarn, guides for said yarn on opposite Sides. respectively, of said drop device. one of said guides being adjustable vertically whereby, through said yarn, said drop device may he adjusted relatively to said contacts, a stop adapted to engage said 'drop device to limit the distance to which it may he moved away from said contacts and means actuated by an abnormal tension on said yarn adapted to move said stop to bring said drop device into engagement with said contacts.

9. A. circuitv closing device having, in co1nhination, an electric circuit including a drop device adapted to open and close said circuit and constituting a. guide for a strand ot yarn,'a' plurality (if-guides in said yarn and me'a'ns normally independent of said drop device and adapted to be actuated by an ahngrmal tension on said yarii to engage said d op device and move it to close said circuit.

10. A circuit closing delvice havina'. in combination, an electric circuit including a drol-i device adapted to open and close said circuitand constitut'i'ug, a guide for a strand of yarn, a plurality of guides for said yarn, a loner adapted. to engage said drop device and guide for said yarn mounted on said lever wherchy, when under abnormal tension said iever may he rocked hysaid yarn tomove saidtdrop device to close said, dirt-nit. the relatiivc'location of said partsl being such that When said drop device is moved dmvn 'WZLI'Cllyi to close said circuit said lever yarn guide will he moved to feed yarn therc't o.

11. circuiticilosing device including an electric circuit, a drop device adapted to open and closesaid circuit and constituting 12. A knitting machine having, in combination, a series of needles, a support therefor, a mass of yarn, a stop motion mechanism including a tripper, an electric circuit including an elect-romagnet adapted, when said circuit is closed, to actuate said tripper to release said stop motion mechanism, said electric circuit embodying a pair'of contacts and a drop device constituting a guide for yarn adapted to engage said contacts and close said circuit and guides whereby said yarn, when under tension, is adapted to hold said drop device out of engagement with said contacts, one of said guides constituting a yarn scraper and located between said drop device and yarn mass.

13. A knitting machine having, in combi nation, a series of needles, a supporttherefor, a mass of yarn, a stop motion mechanism including a tripper, an electric circuit including an eleetromagnet adapted, when said circuit is closed, to actuate said tripper to release said stop motion mechanism, said electric circuit embodying a pair of contacts and a drop device constituting a guide for I yarn adapted to engage said contacts and close said circuit, guides whereby said yarn, when under tension, is adapted to hold said drop device out of engagemet with said contacts, one ofsaid guides constituting a yarn scraper and located between saiddrop deviceand yarn mass and means operated by said yarn when under abnormal tension to move said drop device into engagement, with said contacts.

14. "A circuit closing device having, in combination, an electric circuit including two contacts, a U-shaped drop Wire, the legs of which are adapted to engage said contacts and close said circuit, the closed end of said U-shaped Wire having a bend therein onstitilting a guide for a strand of yarn, a stop adapted to be engaged by the closed end of said. tl shaped Wire to limit the distance to which said Wire may be moved awayfrom said contacts and means actuated by an abnormal tension on said yarn adapted to move said stop to bring the legs of said U- shaped wire into engagement with said contacts.

1:3.- A circuit closing device having, in combination, an electric circuit including'a drop device adapted to open and close said circuit and constituting a guide for a strand of yarn, a plurality of guides for said yarn; cutting instrumentalities and means actuated by an abnormal tension on said yarn adapted to engage said drop device and move it to close said circuit, said means also adapted to actuate said cutting instrumehtalities to sever said yarn.

16. A. circuit closing device having, in combination, an electric circuit, including a drop device adapted to open and'close said circuit and constituting a guide for a strand of yarn, a pluralitysof guides for said yarn,-

a stationary cutter blade, a lever adapted to engage said drop device, a guide for said yarn mounted on said lever, and a movable cutter actuated by said lever adapted to co-.

act with said. stationary cutter to sever said whereby under abnormal tension said be rocked by said yarn to sever me and move said drop Wire to close rcuit. imony whereof I have hereunto set see. VHLLIAM W. BURKE. Witnesses N. EsrAsiaoon,

Runner Henna,

hand in presence of two subscribing wit-

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