USRE12274E - Assigxor to the kip - Google Patents

Description

REISSUED 001?. 11, 1904.

P. E. KIP. ELECTRICAL WARP STOP MOTION FOR LOOMS,

APPLICATION FILED AUG.13, 1904.

WJTN Esss:

M ATTORNEY.

liance on the going pa UNITED STATES- FREDERIL E. K I P, OF MONTOLAIR, NEW JERSEY, ASSIHNOR TO "lllld CORPORATION OF NEW YORK.

ARMSTRONG COMPANY, A

ELECTRICAL WARP STOP-MOTION FOR LOOMS- Reissued October 1 l 1304.

PATENT OFFICE.

KlP-

SPECIFICATION formingpart of Reissued Letters Patent No. 12,2 74, dated October 11, 1904.

Original No. 621,575, dated March 21, 1899. Application for reissue filed August 13,

To a. whom, it may concern:

Be it known that I, FREDERIC E. KIP, acitizen of the United States, residing at Montc-lair, Essex county, New Jersey, have invented I certain new and useful Improvements in Electrical Warp Sto p;Motions for Looms, of which the following is a specification. This invention relates to the class of devices for effecting the automatic stopping of the loom when any warp-thread breaks, and while the present'invention is applicable to any ordinary loom it is especially adapted to the class of looms usedin weaving velvets, plushes, and the like, which employ two back warps and a pile-warp and sometimes employing nearly eight thousand warp-threads. In these looms especially the spaces measured from front to back of the loom in which the terminal drops may be set are very limited. Hence one of the objects of the present invention is to provide anarrow vertically-arranged terminal drop which will occupy little space and which by reason of" the circuit-closing contact being above the warp will be kept free from flufi' and lint, which is liable to collect on the stationary terminal and prevent electrical contact when the light drop falls thereon. In connection with this feature the stationary contact-terminals are so constructed as to maintain their form and not bend when the frame of the loom in which they are mounted spring in working or vibrating, and preferably, also the contact is made byvertical pressure of he drop on the fixed contact.

Another obj t of the invention is to apply the magnet wh ch controls the shipper-lever directly to the said lever, so as to avoid reor vibrating mechanism-of the l om for the release of the lever from its retaining-notch.

In the accompanying drawings, which serve to illustrate the invention, Figure 1 is a diagrammatic view in the form of a sectional side elevation,', illustrating the stop-motion. Fig. 2 is a plan view of a part of the mechanism seen in Fig. 1, showing the terminal drops in plan and Fig. 3 is an under side plan view of other part of Fig. 1, showing the magnet a d shipper-lever. Fig; 4 is an its retaining-shoulder f 1904. Serial No. 220,683-

enlarged view of one of the terminal drops 50 shown resting on and in contact with the two stationary terminals. Fig. 5 is a fragmentar'y detail view showing the tubular construction of the stationary terminal. Fig. 6 illustrates an arrangement of the-circuit where 5 5 the stationary terminals are of the same polarity, and Fig. 7 is a View showing how one stationary terminal may serve for two series of terminal drops. Figs. 8 and 9 illustrate slight modifications, 'ter described. Fig. 10 is a plan view illustrating the switch or circuit-breaker at the operating-magnet. Referring primarily to Figs. 1 to 5, A represents the warp-beam of a 100m; W, the 6 5 warp; c and 7), rollers over which the warp passes; c, the lease-rods; (Z, the heddles; L, the lathe; e, the breast-beam; S, the shipperlever for stopping and starting the loom. and

f the slotted bracket in which the lever S plays- The shipper-lever as ordinarily arranged has a spring s, which-actuates the lever to shift the belt which runs the loom, 1'

and while the loom is running the lever is held by a slight retaining-shoulderf, Fig. 3, at the side "of the guide-slot f in the bracket f, and if lateral pressure or pull be applied. to the lever sufiicient to tree it from said shoulder the spring at acts to instantly shift the lever, and thus stop the loom.

B isan electrical generator, which may be a 'battery,and w w are conductors forming a circuit supplied by said generator, the conductors leading, respectively, from the posi tive and negative poles of the battery. In 5 the circuit is a magnet M, mounted on some part of the frame adjacent to the shoulder which retains the shipper-lever S and having its poles presented to the retained lever. )n the lever S is the armature m of the magnet, said armature being situated in front of and within attracting distance of the poles of the magnet. Obviously when the magnet is excited by the closing of the electric circuit it will attract the armature m, and thus draw,

the lever S out laterally until it is free from when the spring s will shift it. The looseness of the lever-at its which will be hereinaf- 6o pivotal point or fulcrum below-may be'relied onto allow of the very slight lateral movementrequiredto free the upper end of'thelever from its retaining-shoulder. This con- .5 struction obviates the necessity of employing more or less complicated devices between the shipper-lever and the controlling-magnet and also obviates reliance on some vibrating or going partof the loom, for freeing the ship: l0 per-lever.

net, between them and the armature m, and

' the other arm, a, is, between the metal frame '0 and a metal finger 1*, connected electrically with the insulated binding-post a. The current flows from this post through the finger r, interposed arm a", and frame 0 to the coil of the magnet; but when the magnet is ex cited and attracts the armature m'the latter 3 strikes thearm n of the switch-lever, moves it in toward the poles of themagnet and si multaneously moves the other arm, n out of contact. with the finger 11, thu breaking the circuit. Thus the action of the magnet in releasing the shipper-lever is only momentary; butit suiiices to free said lever, so that the. sgring' a may act on it. After the lever has s ifted and is out of the way a spring a" serves to return the lever to its normal posi-' 40 tion, with them-m n thereof in contact with the finger g.

The means employed for closing the circuit when a warp-thread breaks will now be described.

D is one ofa'series of upright slender circuit-closing drops supported on the respective warp-threads, each drop having a longitudinally-slotted body'and'a broad head (F1 The warp-thread passes through a slot or eye L in .'the body, and guide rods 9, extending across the loom and through the respective slots in the body thereof, serve to maintain the drop in an upright position at all times. Two contact-terminals t extend across'the loom at the respective sides of the body of the drop D and insuch a position that when the drop falls from the breaking of the warpthread which supports it two shoulders 03' on the head 01 impinge and rest upon said ter- 60 minal t, which latter nowsupports the drop, The transverse terminals tare connected electrically with the respective'conductors w and w, and hence the head of the drop serves to close the circuit and energize the magnet M.

in the-circuit. One armfa, of'the lever eX-" nals t.

metal and rather narrow, as shown, so as to occupy very little space measured lengthwise of the warp, and this is very important in some looms where the space available for the drops isexceedingly restricted.- Itis also important in that it facilitates the division of the drops D into several'scries, as designated in Fig. 7, where three of such series are" shownthat is, each series contains one-third of the drops, the total number equaling, of course, the number of threads in the warp. InFig. 7 also is illustrated another featurenamely, the utilization of one contact-term? nal t for two adjacent series of'drops D. In this case alternate terminalszf are coupled up to one of the circuit-conductors.

Fig. fi illustrates an arrangement of the circuit wherein the drop D, through its permanent sliding contact with a guide rod or bar g, becomes a terminal contact, the two terminals if being in this case connected with one of the conductors, as w, and rod or bar g with the other conductor. This construction is not deemed s'o' reliable as the one shown in the principal figures for the-reason that the contactof the drop with the rod gin Fig. 6 is necessarily laterah'while both of the com tests in the prinCipaLcQnstructiOn are verti cal and thus rendered more reliable by the wel ht and momentum -of the falling drop.

gs. 1 and 4 show the drop in the form preferredthat is, with a transverse slot d to receive .the warp-thread, which is entered by an open slotat the bottom. The lower guide-rod 9 may be a strained wire; but the upper one will be by preference afiat strip or bar which fits rather snugly in the narrow part of the slot in the drop; but the upper part of this Slot may be widened a-'little, Figs.

1 and 4, so that when the drop falls theup- 95" .per fiat guide-rod will enterthis widened part of the-slot a moment before the shoulders d strike the 'two terminals t. The purpose of this is tojleave the drop free of the guiderod', so that-it may adjust itself to the'termi- Respecting the contact-terminal t it is-pre fer-red to construct it as best illustrated in the detailview,-Fig-. 5. A ban or'rod 1 extends across the loom-frame and is rigidly 5 fixed at its ends in said frame.- On this rod is loosely mounteda straight metal tube 2,

which has, bearingsonly'at its ends onfthe rod 1 "and these preferably near the side frame ofthe loom.x- The {tube 2 is the actual conpropercontact of the head of the drop-D with 5 thetern'iinal contact if when said drop falls. It-will be'noted that in the constructions herein shown the contacts are all above the warp, and therefore are not liable to be'covered withfiufi or' lint from the fibrou sjthreads. 3

contact and a wedging action which insures The contact with both of the terminals 2. drops slide freely on the guide-rods g.

It will be readily understood that parts of the loom frame may form parts of the circuit it proper precaution be taken to insulate as required. Respecting the terminal 1 (shown, in Fig. 5) it may be said that while the contact-piece 2 .will be by preference and for convenience a tube it is not absolutely essential that it should be a complete tube nor a cylindrical tube, as

' the contact is made only on its top, Fig. 9

illustrates two modified forms of the piece 2 one a square tube and the other of a semicylindrieal form. Fig. 8 shows a slight modification of the drop and the terminals 1. In this View the terminals are placed side by side; but one is a little lower than the other,the shoulders on the drop being consequently formed one a little lower than the other. so that both shoulders will come into contact at the same time when the drop falls.

It has been stated in the foregoing specification that the terminals I extend across the,

loom, and preferably they will extend entirely across the loom and have hearings on the side frames thereof; but the word across is used merely in the sense of crosswise or transversely of the loom, and 1t \Vlll be understood by those skilled in the art that it is 1 only necessary'that the terminals i shall ex:

tend across the warp whether it be set the full width of the loom or not. I

Having thus described my invention, I claim 1. The combination with the shipper-lever of a loom, its actuating-swing and a retaining-shoulder engaged by said lever, of an electrical warp stop-motion, consisting of an eleci tric c rcuit, a generator which supplies said circuit, means for closmg said circuit automatically when a warp-thread breaks, a magnet in said circuit and lixed in aposition with its poles adjacent to an armature carried by the retained shipper-lever, and the said arma-y' ture, the line of pull of the magnet being perpendicnlar to the path followed by the lever when freed, and said pull being in the direction to free thclever from its retaininggshouldcr, substantially as and for the purpose set forth.

2. In an electrical warp stop-motion, the

combination with an operating electric circuit having its terminals extending across the warp, side by side, and the .drops- 1), made from thin sheet metal with a relatively long,

narrow body pendent between said terminals] and provided with a head which is broader the drop, substantially as setforth.

3. In an electrical warp stop-motion, the

having its terminals extending across the warp, side by side, and the drop-guides (7, s1tother, of a series of drops D, each made of thin sheet metal with a relatively long, narrow body pendent between said terminals and slotted to receive the said guides and the warpthre'ad, said drop having at its uppencnd two lateral shoulders to take over the respective terminals, and havingits lower guide slot open at its lower end to receive the warp-thread and open at its upper end to the aperture through which the warp-thread passes,substantially as set forth. v 1 j -t. A terminal drop D, having a broad head (5' shoulders a, a transverse slot 1?". for the warp-thread, and longitudinal. slots to receive transverse guides, substantially as setforth. A terminal drop D, having shoulders ('I', 5 and longitudinal slots -to receive? transverse guides, the upper guide-slot beingwiilened at l its upper part, substantially and for the purposes set forth.

6. In an electrical warp fs'top-motion tor looms, the combination with-an operating elecries of contact -terminals extending trans versely of the 100m, side by side. those of one I polarity alternating with thoso-otthe other polarity, of circuit closing"drops, arranged in series bet-ween adjacent circuit-terminalsand supported on the 'wurp-threads. each of said drops having two shoulders adapted to make cuit when the drop falls, substantially as set forth. V

in an electrical warp stop-motion for looms. the combination with the loom-frame 1 having the transvcrserods 1, lived therein, the normallyopen, operating elcctriecircuit, having tubular terminals 52-. mounted loosely on the respective rods 1. at their respective ends i prevented from bending said terminals, and the drops 1), adapted to close the circuit at' said terminals when a warp-thread breaks,

combination with an operating electric circuitv than the body and furnished with inclined and one below the aperture .for the-warpj thread, said guides engaging the guide-slots 1n uated below said terminals and one above the tric circuit, each conductor of which has a seelectric contact with two terminals of the Cir-. 5

i only, whereby distortion of the loom-frame is .from the body thereof for making contact above the Warp-th read.

10. A drop device for warp stop-motions.

formed of sheet metal havinga longitudinallyslotted body and a contact projection extending from said body.

11. A drop device for warp stop-motions formed of sheet metal having an elongated body with two slots, one of which is open at one end and the other closed at both ends.

, 12. A warp stop-motion for looms comprising-drop devicesmaintained in normal position by unbroken warp-threads, said drop de-V vices being formed of'shcet metal and having an elongated body with two slots, one ofwhich is open at one end and the other closed at both ends, a normally open electric circuit adapted to be closed bya falling drop, and loom-sto'pping mechanism actuated upon the closing of the circuit.

13. A war p stop-motion for looms, comprising drop devices suspended from and maintained in normal position by unbrokenwarpthreads, said drop devices having a pro ection extending from the body thereof above the warp, anormally open electric circuit adapted to be closed bya falling drop, and loom-stoppingm chanisin actuated upon the closing of the circuit.

ing drop devices maintained in normal position by unbroken'Warp-threads, said drop de vices having a longitudinally-slotted body and a projectionextending from said body, anorreally open electric circuit adapted to be closed bya falling drop, and loom-stopping mechanism actuated upon the closing of the circuit.

15. A-Warp stop-motionfor l0oms,comprisminals in the path of a falling drop, whereby the circuit is closed by said drop,-said drop contacting with aterminal through the pro jecting part thereof, the point of contact of said terminal and projecting part being outsiderof the line of descent of the body part of] the drop, and loom-stopping meansactuated upon the closing of the circuit.

16. A warp stop-motion for l'oomscompris ing drop devices maintained in normal posia projection extending from said body, an electric circuit-having terminals lILtllB path of a 'falling drop, whereby the circuit is closed by said drop, said drop contacting With 'a terminal through the projecting part thereof, the

point of contact of said terminal and projecting part being outside of the line of descent vof the body partofthe drop, and loom-stopping means actuated upon the closing of the circuit. v 1

IfltGSlZ-IHIOHY whereof I havesigned my name to this specification in the presence of two sub a scribln g Witnesses. M.- Awarp stop-motion for looms,comp ris FBEDERIG n mr.

Witnesses: f

FRANK F. OSMERS, GEORGE S LI AN.

- tion by unbroken warp-threads, said drop devices having a longitudinally-slotted bodyand-

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