US813307A - Warp stop-motion for looms. - Google Patents

Description

PATENTED FEB. 20, 1906. F. E. K1? 6: F. M. ARMSTRONG.

WARP STOP MOTION FOR LOQMS.

APPLICATION FILED MABHS, 1905.

3 SHEETS-SHEET 1.

WITNESSES: 'fioc.

No. 813,307. PATENTED FEB. 20, 1906.

,3 SHEETS-SHEET 2.

% WITNESSESZ Q INVENTOSZ mm X? LM Q 3% f5? @ma JLMA$ iiw W 2 No. 813,307. PATEN-TED P1213520, 1906.

P.-B,;KIP & F. M. ARMSTRONG. WARP STOP MOTION FOR LOOMS APPLICATION IILED' K113, 1906.

a mum-sum a.

INVENTORS Cj/WQ 65/7; JAM n. A/mam 8M ATTORNEY ilk W A UNKTEW FREDERIUE. Kill, @F MONTCLAIR. NEW JERSEY, AND FREDERlCK M. ARMSTRONG, OF PAWTUCKET, RHODE ISLAND, ASSIGNORS TQ Kl?- ARMS'lTRONG COMPANY, 0F NEW YORK, N. Y., A CORPGRATIQN OF NE'VV YORK.

Specification of Letters Patent.

Patented Feb. Q6, 1%66.

Application filed Ids-rah 3,1906. Serial No. 2 18,261-

To all wit/mi it ill/my concern:

Be it known that we, Fnnnnnro E. KIP, a resident of Montcleir, New Jersey, and FRED- ERICK M. ARMsTRoNo, a resident of Pawtucltet, Rhode Island, citizens oi'the United States, have invented certain new and useful Improvements in Warp Stop-Motions for -0 ened and closed at two pointsby the he d e-i'remes as the latter are moved in the formotion of a shed, one such oint being within each harness-frame and his other without, the operation being so timed during the normal running of the loom that when the circuit is closed at one point it is broken at the other. Y The heddle or harness frsmes comprise as one of the lifting-bars for the heddles a compound electrode or terminal, with one member of which the heddles are in constant contact, and complete electrical enby reference to in which Figure-1 is at side elevation of s looin shovh mg the application of the invention thereto,

the loom-frame being broken ow ey at parts.- Fig. 2 is s front elevation of a pet tion 05 the left-hand end of the hreest-heam. Fig. 3 is e perspective detail view. Fig. 4 is e disgrem motic View showing s. nortion of two of the hsrncssfromesend' the electrical circuit. Fig. 5 is a vertical sectional view of s heddlethe megne 9 is en the accompanying drawings,

frame on the plane of the line 5 5 of Fig. 9. Fig. 6 is :2 vertical sectional view through the compound switch. Fig. 7 is a horizontal section on the plane of the line 7 7 of Fig. 6. Fig. 8 is a vertical sectional view on the plane of the line 8 of Fig. 6. Fig. 9 is a front view of a portion of one of the hsrness iremes on an enlarged scale. i0 is ever-tics; sectional view of e. modification, and Figs. 31 and 12 illustrate a further modification.

Similar reference-numerals indicate similar ports in the several views.

Referring to the drswin s, the frame .i, lay 2, breast-beam shippen ever 4, end wnrpbesm 5 may be and are of the usual construction and arrangement in looms.

er-lever, as shown, occupies a slot 6 in s racket 7 forming an extension of the breast beam, and engages when the loom is running a shoulder 8. When "freed from this shoul-- der, a spring (not shown)shifts the shipperlever to stop the loom.

In order to set the shipper-lever free, on

The ihipelectromsgnet 9 is mounted below the breastbeam on a bracket 10, secured by suitable means to the loom-frame, end its ermsturelever 11, fulcrnmed st 11 on said bracket, is connected by a link or wire rod 12 to one end" of a dagger 13. or studs 14 in e bracket 1'5, secured to the loom'rsme, is e knockoff lever 15, attached. st its lower end to the dagger 13 (see Fig. 3) and at its upper end adopted to engege the shipper-lever e. The dagger is norrnelly in. such v osition that upon thefheet'np ofthe' lay it n rli enter on opening 1'? in the hunter. 17, mounted on the lay, OI' SOljfEE. other vibrating or mlaving pert of the loom; but when ized through the mean hereinafter descrio the 'deggei moved.

Pivotslly supported hypins the of said hunter, thereby movin gthe 1904:, he suchhunter-prevents, the operative to:

from interfering w-ith'thee'fie tiveness'oi he" knock off meehsnisirifelth ligh any other. suitableforni-of hunter could housed To set in motion the loom-stopping,nieclm nnism when u \var rthread breaks or becomes undulyslur-lee, controlling-1ircniL l\ is employed, which circuit includes n. cnl -onl snitch 1!), the coils ol' thlmagnet .l, :1 coms lound switch 2U,the latter oulsideol' the hnrness-irnmes, hut controllml thereby. and a compolmdterminal21 within and l'orming' a port of the lnuness-l'rnmes. Th circuit is i normally closed tl'irough the switch ll), and lo normally opened and closed alternately through the switcl 2b and compound tcrminul 21--thut during the nornnil operation of the loom when the current-circuit is closed i through the conmound terminal 2 by a hedi (lle in electrical engagement therewith it is l opened by the switch for that particular heddle-l'mme, and, vice verso, when closed at the switch 2c the current-circuit will be opei'ied at "he compound teeminol 21. The :70 means o which the controllingwircuit is util:

ized when a. warp-thread breaks or becomes undul slack to stop the loom will now he de scribed. The heddleor harness frames, of which there 2 5 may be nnydcsired number, are composed of top and bottom hers 24 end 25, respectively, connected at or near their ends by side bars 26. They may be supported in sny wellknown and usual manner-es, for instance, by 0 s! hZtblU straps connecting theupper bars 24 with actueitingievers, springs 28, secured to the loo er burs 25 end to a fixed metallic plate 2!), serving to pull the heddle-frmnes to their lowermost positionsslter having been raised 5 5 by the straps and their actuating-levers. ltigidly secured to the side bars of each 'l'rlnne a cross-hoi- 3G, and above the slime, near the upper part of the frame, is the compound terminal 2i also rigidly secured to the bars 0 2:3 Ssid compound terminal is of well.- .lrnown constructionend comprises an electricelconduetive body member 31, into one edge of which is set on electrical conductive strip or hlede ,oroperiy insulated from the 5 body member. the heddles ordrop-wires 33 may any term edsipting them to the do sir-ed ournose. As shown, they are mode of l strips her ing ii thread eperture I; through WlliCl'l slots th e l respeo terminal 21, end by which the heddles erted in the lisirnossiraines s on in hers en. terminals. ihe thickness oil the hotly members 31 oi the compound termid the 3i)531x 3sllbsliiinhlfiilly equiil to i '2. sin s 3-3 and 34;,so2is to moire oper vertical position vii said i' 'iemhors and rid slots is such as to ioveinent oi the l J or hie movement of l upper well slot 35 is l l ,7 the blues 32 of the C-Uillr When the looin is running nornmlly, the hcddle-l'rames will act as usual loomhnr ncsscs or the formation of the shed. When the luu'ness-l'rame rises, the tendency ol :1 urn-thread is to draw its heddle downward and into electrical engagement with the compound terminal. When the harness has dropped so l'zirzistodeprcss the threads which it controls below their normal level, then each ol' the threads which is intact or unbroken raises its heddle and supports it out of operolive engagement with the compound terminal. ll, however, one of the threads is broken, then its heddle will fall into electrical engagement with thecompound terminal, and when the frame containii're the broken thread reeches its lowermost position the circuit Will be closed. not only through the compoundterminsl, but also through the switch 20, and the current is thus free to flow through its completed circuit. if the circuit is not cut out at switch 20 at all times except when the frames are their lowermost positions, then the loom would he stopped not only when the frames are at their highest points, but also 0 when sulliciently raised to permit the heddles to hang loosely. in other words, when the loom is running normally and the circuit is closed through the compound terminal by the upward movement of the harness it must be broken at the switch 20. Each harnessl'rsme with its heddles must, therefore, be an electrical unit, each conteining in itself the electrical stopping elements and each provided with controlling devices to, admit the I00 electric current to these elements at the proper time and withhold it from them at all other times.

Referring more particularly to Figsrfi 7, and 8, we have shown one form of switch 00- o ieroting with the harness-frames to secure t e alternete opening and closing of the circuit when the circuit is respectively alter netely closed and opened through the compound terminal. This switch 20 is con- :10 structed' and connected to the harness-frames its follows: Within a suitable casing is a; hear ing 74, surrounded by an insulating-bushing an ll'pon said bushing. are fulcrumed levers 37, of conducting material, as brass or steel, similar in construction and one for each llliI'HGiiS-il'itlllfi and each insulated from the others by fiber or other insulating Washers 41. Sup )orted within the casing is a block 42 of insuliitiing materiel, to which is secured a, me- 12:; tellic hruslr4-3, having teeth or lingers 44- corresponding in number to the levers 37 end so mounted that one tooth presses :igeinst each lover. The brush 43 is sufliciently elastic to insure good electrical. engagement between the teeth 44- end the levers 37. in the perinl'ieryof each lever 37 is set a strip 45 of insulating material, so that lit certain times when the levers 37 are oscillated said l strip will he brought beneath the c0ntectr 0 tooth 44 to break or interrupt the circuit. The circuit-wire 18 is led into the switch-box 20 and connected to a suitable binding-post and thence connected to the brush 43, as shown in Fig. 6f In order to connect the switch. 20 both electrically and mechanically with the harness-frames, each lever 37 is pivoted at its outer end upon a pin 38, held in a suitable clip 39, secured-to the upper end of a rodeo, said at its lower end being connected with the harness-frame by a spring- 047, which so pinches the rod 40 as to insure good electrical engagement at thatpoint, or by any other suitable means. T he spring.- clip is secured to a plate 48 on the harnessirame, and said plate has integral therewith or attached to it a spring-tongue 49 in conwith the blade 32 of the compound terminal. As shown in Fig. 9, the body member of the compound terminal projects through the side bar 26 and alongside of or through an opening in a metal plate 50, secured t0 the harness frame. The upper end of the plate 50 is sprung away from the frame normally when not connected with the oompbund terminal. To effect the connection, the plate 50 is sprung toward the frame and a pin 51 inserted into a hole in the meme her 31, the engagement of said plate and pin enacting a good electrical contact. The

springs 28 are connected, through suitable means, to the metallic plate 50, and the circuit-wire 18, leading from one pole of the batter ,is connected, through a binding-post, to the plate 29, to which the other end of the springs are connected.

The operation of themechanism above dcseribed will be readily understood, and for the sake of clearness we will refer to only two arnessframes, assuming that at each pick f the loom the said two frames (shown in l) moved alternately, causing the threads carried thereby to be alternately moved into the upper and lower planes of a As the heddle-frame 23 is lowered in o al manner to move the warp-threads to form the lower plane of a shed the tension of such warp'threads, if unbroken, will hold the heddlcs through which they pass ou f ontact with the blade 32 of the com rminal, thus opening or breaking circuit at that point. At the same time, yer, the lever 37, secured to the frame be oscillated, so that the insulatingof particular lever will wipe from the corresponding tooth 4.4 of the comb .ierebv establishing elcclrical contact 9 comb and the lever 37, l s shown or at the top in Fig. 7, and closing L ne circuit forthc frame 23 at that point. The reverse situation at such time is present in the harness-frame 22. In that frame, shown at its uppermost position, the tension of the Warp-threads 52 holds the hcddlcs in electrical engagement with the compound termiual 21, thereby closing the circuit at that point, while the lever 37, secured to the frame 22, is oscillated to bring its insulating-strip 45 beneath the corresponding tooth 44, thereby breaking the circuit at that point, as shown in Fig. 6, and the second lever from the top in Fig. 7. Thus it will be seen that the controlling-circuit has two points at which during the normal operation of the loom it is alternately broken and closcdone within the harness-frame and the other outside tl1ereof-and that for a given harnessframe when the circuit is broken at one point it will be closed at the other. The parts described are so constructed and timed for normal operation of the loom that a given lever 37 does not make electrical engagement with its corresponding tooth 44 of the comb 43' until after the heddles of the harnessframe to which it is connected have been raised by the tension of the war i-threads out of contact with the plate 32 of the compound terminal. In other words, when the loom is running normally the circuit for a given frame should never be closed at the same time through the switch 20 and the compound terminal. As the l'rame begins to rise no movement will be imparted to the hcddles,

owing to the slight vertical play allowed tliinn; but as the upward movement of the frame continues the compound terminal 2] will engage the u )per walls of slots 35 in the heddles 33, and the latter will be raised with the frameto the limit of its upward movement, the tension of the thread acting to hold the heddles in electrical engagement with the compound terminal, as above described. VVhcn the frames begin to descend, such tension of the warp-threads will be maintained until at or about the time they reach their normal level, from which point to the lowermost position of the frame the tension of the warp-threads will tend to raise the heddles, so as to break the electrical contact at the compound terminal. The lower slot 34 is made longer than the upper slot 35 to insure good electrical contact between the compound terminal and a fallen heddle. As sumo now that a warp-thread breaks when the frame 23 is at its lowermost position, its heddle falls and contacts with the blade 32 of the compound terminal. The circuit, when the frame containing the broken thread is at that position, is then closed through both the compound terminal and its corresponding tooth 4 of the comb 43 and may be readily traced from battery 55, cut-out switch 19, elcctromagnet 9, comb 43, tooth 44, and lever 37., corresponding to frame 23, rod 40, plate 48, tongue 49, blade 32, hcddle 33, bar 31, plate 50, spring 28, plate 29 to battery. Whenv the clcctromagnet 9 is thus energized, its armature-lever 11 is attracted and moves the dagger 13 into position to be impinged upon by the bunter 17 to thereby at an intermediate position the circuit will be imn'iediately closed through the fallen heddle, and the compound terminal and the loom wili be lti'io'ched oll' when the frame reaches its lowermost position, so as thereby to close the circuit through the switch 2!).

When a loom is o 'ierated at high speed, the duration of the electric current through the "circuit above described is so short as to amount to little more than an impulse, being ust sufliclcnt to move the magnet-armattire and its connected dagger, but not sutlicient to hold them in position to engage the dagger with the hunter and to stop the loom. We have therefore shown as a part of the present invention means to insure the maintenance of the dagger in position aiter it has once been set by the movement of the armature oi the electromagnet 9 until it has engaged the hunter and until after the shipper-lever has been released and operated the cut out switch 19, as hereinafter described. For

that purpose the armature-lever 1 'l is included in'a shunt-circuit 18, having a terminal 57 adapted to contact with said lever when the controlling-circuit 18 is closed and the electromagnet energized to stop the loom, as shown in Fig. 4-. W hen the magneuarinature is drawn down, the shunt-circuit is thrown in, ;,wh1ch1nsures that the armature shall remain down independently of any action of the switch-20. The magnet having; been energized remains so until the loom is stopped, when by the arniature resuming, its normal position the shunt is thrown out of circuit.

In order to save the batteries, it is desirable that the circuit should be broken alter the current has done the work required of in moving and maintaining the dagger 13 in position'to be impinged upon by the hunter t7 To effect this, We include any ordinary form of sWitch'19 (shown in section in Fig. 2) in the controllingrcircuit 18, said circuit being'nor mally closed through said switch. As here shown, the switch 19 is su )ported upon a bracket secured to the loomn'ran'ie and is pro Vided with a lever 58 in contact with and ada ted to he moved. by aprojecting arm 59 on t e shipper-lever, said arrn being connect ed so as to move said lever in both directions.

i/Vheathe controlling-circuit i8 is cl sed by a fallen heddle, the shipperdever is released, above described, and as said lever is moved the switcniovei' 025 is moved so as to break the circuit at the switch 15). When the loom is again set in. motion by moving the shipperlever 4 into engagement with the SllOLllt er 8, the lever 58 will be moved to close the circuit at switch it).

in Fig. 6 we have shown springs 60 lastoned to the lovers 37 and to the switch-box 30 to assist the movement of said levers in either one direction or the other.

In Fig. 10 we have shown a modified form.

of switch which has been made the subjectn'iatter of an application tiled of even date herewith in the names of Frederic l). Kip and lilrnest Greenwood, Serial No. 248,252. In this modification block 61 is secured at any convenient point on the loom lramtnand prel'erabl y above the harness1"rames, and vertically supported therein are guiderods (92. Between these rods are mounted slide-blocks 68, through which are passed the bent upper arms of rods (54 and 65, said rods being connected, respectively, to the blade 66 and the body member (37 of the compound terminal. On the ends oi said rods whichproject through the slide-blocks 63 are secured suitable shoes 70, adapted to contact with two swing-plates (S8 and (it), to which the terminals of the controlling-circuit are connected. Said spring plates are so positioned that the shoes 70 on the rods 64 and 65 will make electrical en gagcment therewith when the harnessd'rame is at or about its lowermost position, so that when in such position if a warp-thread should have been broken and its heddle thereby released, so to close the circuit through the compound terminal, then the controlling-circuit will be closed at both points and the magnet QenergiZed, as above described, to eli'ect the stoppage of theloom. This modification is more particularly described in said companion application; but as it operates upon the same principle asthe switch iilustrated in Figs. 6, 7, and 8 the intention is to claim the invention generically in the present application.

An important feature of the present invention is that the closing of the circuit at a point within the harness-frames is effected by a gravity drop. This very much sin'lplifies both the construction and the mode of operation in that it dispenses with s rings and ctarnping evices and the like watch have heretofore been sug sted as elements of a Warp stop-motion. lcurthermore, it permits of the use of a narrow vertically-arranged terminal. heddle which occu ies but little space and by which fluff an lint, which is liable to collect on the compound. terminal, is prevented by reason of the circuit-closing heddle being above the warp.

While we have shown the switch 20 directiy connected with the harness-fran'ies, it is obvious that said switch may be operated through a connection with some other part that moves in synchronism with the harnessever the harness-frame is at its lowermost por the switch 20 in the same manner as heretoeraser frames, or it would be feasible to connect the shaft 74 withsome other rotating member of the loom that is positively connected with the harness motion and in such manner that an arm or finger secured to the said shaft'74 would make contact with the comb :3 whensition.

In the construction shown in Figs. l and 5 the bar 30 of the harness-frame serves merely as a guide, the slot 3% is longer than slot 35, and the circuit is closed at the frame through the compound terminal. Figs. ll and 12 show a modified construction in which we employ two guide-bars 71, made of wood or other insulating material, into which are set blades 72. of conductive material, and the slots 7 3 are made the sarnelength. As shown in Fig. 12, the spring-tongue 49 contacts with the upper blade 72 and that the lower blade 72 is extended through the side bar 26 of the harnessframe to make electrical engagement with the metallic plate 50. V] hen a warpthread breaks or becomes unduly slack, the fallen heddle will rest uponboth blades 72, and all the other parts remaining the same as described in connection with Fig. 4 the circuit can be traced from. battery 55, switch 19, electromagnet 9, switch 20, rod 40, tongue 49, upper blade 72, heddle 33, lower blade 72, plate 50, to battery. During the normal running of the loom the hcddles will be raised by the engagement therewith ol both blades 72 instead of, as in Figs. 4 and 5, by the com- "iound terminal only; but when the circuit is thus closed at the frame it will be broken at fore described.

In ractice it may be found desirable to use a jaccnt to the loom-harness two rods 7 5 to prevent too great sag of the warp threads due to the weight of the heddles. These rods are placed immediately below the plane of tr e lower shed, so that in the normal running of the loom a uniform plane will be maintained and the usual amount of sag of the warp-threads prevented from closingthe circuit, and thus knocking oil the loom.-

Believing ourselves to be the first to provide a warp stop-motion comprising a heddle bar included in the controlling-circuit and 7 heddles having slots through which said bar is passed, the heddles performing the usual functions ol a heddlo and additionally serving as gravity drop devices to close the com trolling-circuit to set in operation the stopping mechanism, we desire to claim the same I broadly and without limitation to the specific 3 By lioddlc-ba1" we mean i details shown. a bar included in the control]lug-circuit and passing through a series of drops. This bar may he a compound terminal or it may be a single terminal, the other being below or above l What we claim, and desire to secure by Letters Patent, is-

1. In a war stop-motion for looms the combination 0'' a controlling-circuit for setting in operation the stopping mechanism, a harness-frame having a series of heddles suspended therein, a switch included in said circuit and located outside of said frame, and

means to close the circuit at said switch when the frame is at or near its lowermost position. 2. In a warp stop-motion for looms the combination of a controlling-circuit for setting in o oration the stopping mechanism, a harness-trams having a series of heddles suspended therein, a switch included in said circuit and'located outside of said frame, and means to break the circuit at said switch when the frame is at or near its uppermost position.

Y 3. In a warp stop-motion for looms the combination of a controlling-circuit for setting in operation the stopping mechanism, a harness-rams having a series of heddles sus-- pended therein, a switch included in said circuit and located outside of said frame, and means to alternately close and break the circuit at said switch as the mine is at or near its lowermost and uppermost positions respectively. i

4. In a war stop-motion for looms the combination 0 a controlling-i rcuit' for setting in operation the stopping mechanism, a plurality of harness-frames each having a series of heddles suspended therein, a switch included in said circuit and electrically con-, nected to each of the harness-frames, and means to alternately close and break the circuit at said switch for each frame as it is at or near its lowermost and uppermost positions respectively.

5. In a warp stop-motion i'or looms the combination oi a controlling-circuit for setting" in o oration the stopping mechanism, a harnessrame having a series of hoddlcs suspended therein, a switch included in said circuit and located outside ol 'said Frame, and means to operate said switch in synchronism with the movement of said frame so as to alternately close and break the circuit at said switch when the frame is at or near its lowermost and uppermost positions respectively.

6. in a war) stop motion for looms the combination cl a controlling-circuit for setting in o )eration. the stopping mechanism, a harness-home having a series ol" heddlos suspended therein, a switch included in said circuit and located outside of said frame, a connection between said frame and said switch whereby the latter is controlled to alternately close and break the circuit when the frame is at or near its lowermost and uppermost positions respectively.

7. A warp stop-motion for looms comprisl'rame having a hcddle-supporting barsecured therein said bar being included in said c rcuit. and means crnnprisinc a gravity drop device for closing the circuit through said bar 1 when a warp-thread breaks or becomes unduly slack 8. A warp stop-motion for looms comprising a controllirig-circuit for setting in operation the stopping mechanism, a harness frame having a hctldlersupporting bar secured therein above the warp said bar being included in said circuit, and means comprismg a gravit dro device for closing the circuit throng said bar when a warp-thread breaks or becomes unduly slack.

9. In a warp stop-motion for looms the combination of a controllirig-circuit for setting in operation the stopping mechanism; a harness-trame -carrying a fixed contact-bar said bar being included in said circuit, a series of heddlcs suspended on said bar, said circuit 1 being closed through said bar by the falling 1 of a heddle when a warp-thread breaks or becomes unduly slack to set in operation the stoppingmechanism.

10. In a warp stop-motion for looms the combination of a controlling-circuit for set ting in operation the stopping mechanism, a harness-trame carrying a fixed contact-bar, said bar comprising two members insulated from each other the terminals ot'said circuit being electrically connected respectively to said members, a series of heddles suspended on said bar, said circuit being adapted to be closed through said bar when a warp-thread breaks or becomes unduly slack to set in operation the stopping mechanism.

11. A warp stop-motion for looms comprising a controlling-circuit for setting in operation the stopping mechanism, a harnesslrame having a hcddlc-supporting bar in cluded in said circuit, heddles having slots through ,which said bar is passed, said circuit being closed through said bar by the falling of a heddle when a warp-thrcad breaks or becomes unduly slack to set in operation the stopping mechanism.-

12..A warp stop-motion tor looms comprising a controlling-circuit for setting in operation the stopping mechanism. a harness frame having a heddle-supporting bar included in said circuit, heddlcs having slots through which said bar is passed. the point of suspension of said heddles being above the warp, said circuit being closed through said bar by the falling of a hcddle when a warp thread breaks 'or becomes unduly slack. to set in operation the stopping mechznism.

13. A Warp stop-motion i'or looms comprising a controlling-circuit for setting in operation the stopping mechanism, a harnessframe having a series of hcddles therein, a

supporting-bar for said hed'dles secured to j the frame and included in said circuit, the

tension of the warp-threads; on the hedclles l during the normal operation of the loom all ternately closing and breaking the circuit through said supporting-bar whenthe harness-frame is at or near its uppermost and lowermost positions respectively, said circuit also being closed through said bar by the fallbecon es unduly slack to set in operation the a stopping mechanism.

H. In a warp stop-motion for looms the combination of a controlling-circuit for setting in operation the stopping mechanism, a harness-frame to which the terminals of said circuit are electrically connected, a bar electrically connected to said frame and carried thereby, and metallic heddles suspended said frame and adapted when fallen to contact with said barto close the circuit.

15. in a warp stop-motion for looms the l combination of a controlling-circuit for set ting in operation the stopping mechanism, a harness-frame having a series of heddles suspended therein, said harness-frame being includcd in said circuit and means 0 crative j during the normal running of the 00m to close said circuit at a point outside of said frame when said frame is at or near its lower most position and at the same time to break the circuit through one of the heddle-supporting bars.

16. In a warp stop-nmtion for looms the combination of a controlling-circuit for seting of a heddle when a Warp-thread breaks or l l l i harness-frame having a series of heddles suspended therein, said harness-frame being included said circuit and means operative during the normal running of the loom to break said circuit at a point outside of said frame when said frame is at or near its uppermost position and at the same time to close the circuit through one of il'H- heddle-supporting bars. i

17 in a warp stop-motiotifor looms the combination of a controlling-circuit for set ting in operation the stopping mechanism, a harness-frame having a series of heddles suspended therein, said frame being included in i said circuit. a switch also included in said'circuit and located outside of said frame and means operative during the normal running of the loom to close the circuit at said switch when it is broken at a point within the harness-lrame.

12w. In a warp stop-motion for looms the 1 combination of a controlling-circuit for settin; in operation the stopping: mechanism, a. rharness-frame carrying a fixed contact-bar, a series of heddles suspended on said bar, said heddles hemp controlled by the tension of the. Warpdhrcnds during the normal running of the loom to close and break the circuit through said bar when the frame is at or near spectively, and means to close and break said 1 circuit at a point outside oi the trame at the ting. in operation the stopping mechanism, a

its uppermost and lowermost positions re time when it is broken and closed at said bar respectively.

19. In a warp stop-motion for looms the combination of-a controlling-circuit for setting in operation the stopping mechanism, a

harness-frame carrying a. fixed contact-bar said bar being included inv said circuit, a series of heddles suspended on said bar and controlled by the tension of the warp-threads to break and close the circuit when the frame is at or near its lower and upper most positions respectively, a switch located outside of said frame, and means to operate said switch in synchronism with said frame so that during the normal running of the loom the said circuit will be closed at. the switch when it is broken at said terminal and broken at the, switch when closed at said-terminal. I

20. A warp stop-motion for loomscomprising a controlling-circuit for setting in operation the stopping mechanism, said circuit having two points at which it is alternately broken and closed during the normal running of the loom, one such point being within the harness-frame and the other outside thereof,

and means to close the circuit at said outside point only-when the frame is at or near its lowermost position.

21. A warp stop-motion for looms comprising a controlling-c rcuit for setting in operation the stopping mechanism, a harnessframe carrying a fixed contact-bar, said bar comprising a body member and a blade insu-- lated from said member and projecting above the same, .aseries of heddles suspended on said bar, said circuit being adapted to be closed through said bar when a Warp-thread breaks or becomes unduly slack to set in operation the stopping mechanism.

22. A warp stop-motion for looms comprising a controlling-circuit for setting in operation the stopping mechanism, a harnessframe carrying a fixed contact-bar, said bar com rising a body member and a bladeinsw late from saidmember, a series of heddles supported on said bar, a; switch located oute of said frame and means to actuate the same to establish an electrical connection between the switchand said blade when the said frame is at or near its lowermost position, whereby said circuit will be completed b a fallen heddle contacting with said blade w on the frame reaches said position.

23. A. warp stop-motion for looms comprising a controlling-circuit for setting in operation the stopping mechanism, a harnessframe carrying a fixed contact-bar, said bar comprising a body member and a blade insulated from said member, a series of metallic heddles suspended on said bar, a switch to which one terminal of said circuit is connected located outside of said frame, an electrical connection between said switch and said blad a plate on said frame of conductive macuit and said body member are connected, the said parts being so arranged that the oncuit will be closed through said switch and said bar at the same time only when the frame is at or near its lowermost posltion.

24. A warp stop-motion for looms com prising a controlling-circuit for settlng 1n operation the loom-stopping mechanism, a plurality .of harness-frames, a switch havlng a plurality of levers included in said circuit and each harness-frame having connected thereto a corresponding switch-lever and each lever having a contact and a non-conducting face, and contact-fingers to which one terminal of said circuit is connected, the parts being so arran ed that the circuit Wlll be closed through sai switch for a given frame only when said frame is at or near its lowermost position.

25. In a warp stop-motion for looms the combination of a controlling-circuitfor setting in operation the stopping mechamsm, means for closing said circuit when a warpthread breaks or becomes unduly slack, an electromagnet included in said circuit, ai dagger connected to the armature of said magnet and means to hold said armature 1n its attracted position until after the loom has been knocked off.

26. In a warp stop-motion for looms the combination of a controlling-circuit for setting in operation the stopping 'mechanlsm, means for closing said circuit when a warpthread breaks or' becomes unduly slack, an electromagnet-included in said c1rc u1t a dagger connected to the armature of said magnet, and a shunt-circuit adapted to be closed by said armature to maintain the 0O1lS of the electromagnet energized until after the loom has been knocked off. i

27. In a'warp stop-motion for looms the combination of a controlling-circuit for setting in operation the stopping mechanism, a shipper-lever, an electromagnet and a contact-switch included in said circuit, a dagger connected to the armature of said magnet, means to hold said armature in its attracted position until after the shi per-lever has been released, and means on t e shipper-lever to operate said cut-out switch to break the circuit after said lever has been released.

In testimony whereof we .have hereunto signed our names in the presence of two sub scribing witnesses.

F EDERIC E. KIP.

. tEDERIOK M. ARMSTRONG.

Witnesses to the signature of Frederic E. Kip:

ARTHUR OAKLEY,

ALFRED HoLaoYD.

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