US1004594A - Stop-motion. - Google Patents

Description

M. C. RYAN.

STOP MOTION.

APPLICATION FILED 11:12.16, 1910. 1,004,594.

Patented Oct. 3, 911.

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ggtllllllllllllllllllllv fm I M. O. RYAN.

STOP MOTION.

APPLIoATIoN funn 21:15.16, 1910.

1,004,594. Patented Oct. 3, 1911.

M om] lu u e nto/L 1 Q a Houle M. C. RYAN. STOP MOTION. APPLIOATION FILED FEB. 1e, 1910.

Patented Oct. 3, 1911.

3 SHEETS-SHEET 3.

MICHAEL C. RYAN, OIF PHOENIX,'NEW YORK.

STOP-MOTION.

Specication of Letters Patent.

Patented oct. 3, 1911.

Application led February 16, 1910. Serial No. 544,281.

To all whom it may concern:

Be it known that I, MICHAEL C. RYAN, a citizen of the United States, residing at Phoenix, Oswego county, New York, have invented certain new and useful Improvements in Stop-Motions; and I do hereby declare the following to be a full, clear, andV exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain improvements in stop motions for silk doubling and winding machines and the like and the objects and nature of the invention will be readily understood by those skilled in the art in the light of the following description of the accompanying drawings showing what I now consider my preferred embodimentu from among other constructions and arrangements within the spirit and scope of my invention.

An object of the invention is to providel kcertain improvements in stop motions for doubling, winding and other machines of similar character and purpose, and whereby when a thread or strand breaks the winding bobbin or reel will be almost instantaneously stopped and locked or gripped against continued rotation thereby preventing continued :rotation of the bobbin after it has been thrown from operative position,4 or relation with respect to its driving means.

A further object of the invention is to provide certain improvements in arrangements and combinations whereby a simple and highly elicientstop motion will be produced, readily adaptable to doubling and other silk or thread machines.

The invention consists in certain novelfeatures in constructions and arrangements of parts. and in combinations and arrangements of elements as more fully and particularly set forth hereinafter. f

' Referring to the accompanying drawings z-Figure 1, is a detail front perspective viewof a stop motion embodying my invention, the parts being shown in normal operative positionya winding `bobbin and the silk strands thereto being shown. Fig.

2, is a detail end elevation, of the structure v shown in Fig. 1, the parts being shown in normal operative position, the winding bobbin being shown incross section, the cover or side wall of the case containing the trip mechanism being removed. Fig. 3, is a.

view similar to Fig. 2, but showing one silk strand broken and the parts in bobbin stopping position. Fig. 4, is a detail front elevation of the stop-motion-carrying arm (the bobbin being partially shown in section) with the parts inthe position shown by Fig. 3. Fig. 5, is a horizontal section on the line 5-5, Fig. 2. Fi 6, is a detail perspective of the bobbin li ing finger and its operating finger piece, and the electric switch controlled thereby. Fig. 7, is a detail perspective view of details of the trip l mechanism.

My stop motion is particularly designed for detecting Abreaks in the strands passing from the supply bobbins to the winding bobbins of silk doubling machines although it is adapted for application to winding, reeling and other silk and thread handling machinery.

In the example shown, in is a winding bobbin having end trunnions 3, which can be formed by' a spindle or shaft. The bobbin is also provided with a friction drum or hub 4. The.bobbin is driven by a constantly rotating'friction disk 5, carried by drive shaft 6. The bobbin trunnions rest removably in the vertical slot bearings 7, so that the bobbin is vertically removable from the machine and rests by gravity on the fricthe drawings, 2,

tion driving disk and is rotated by the fricwith, and have not illustrated the structure of the doubling machine inasmuch as those` skilled in the art are familiar withwsuch machines and will readily' understand the application of my invention thereto.

lv show the stop motion carried by a suitable bracket at its lower end bolted or otherwise secured to a suitable longitudinal beam of the machine frame, and rising therefrom in the form of an arm 10, terminating below the winding bobbin, and comprising a vided for each strand 14, passing to the bobbin. Each detector can consist of a vertically movable spring met-al wire at its outer free end having the eye 13, and at its inner end formed into a coil 15, confined and rockable on a metal supporting rod or vrod 1"9. This operation shaft 16, and having a rear upwardly projecting stop or contact end 17 to limit the downward movement of the free end of the detector, while the upward movement of the detectors mounted .on horizontal rod 16, is limited bythe back turned horizontal outer end 18, of said shaft, said stop end 18, being arranged above the detector arms to beengaged thereby. The downward movement of the free ends of the independent detector arms is limited by the upward engagement of their projecting rear ends 17, with the horizontal metal rod-19, parallel with and above `metal rod or shaft 16. The constant tendency of the detector arms is to assume the lowered positions with their rear ends 17,

in contact with the stop rod 19. The silk strands passing up through the eyes 13, of the detectors to the winding bobbin, hold said detectors swung upwardly against the stop arm 18 with their contact ends 17, away from stop rod 19, by reason of the fact that said strands are stretched or under tension. Should either strand part or break, the tension on its detectorarm will be immediately relieved and said arm will instantly drop untilv its contact end 17engages `the stop or action is taken advantage of through the medium of electric devices to bring about the action of `the stop motion `to practically stop and lock the wind-A 1ng bobbin almost"instantaneously with the breaking of anyY strand passing to said bobbin. c

`The stop rod 19, and shaft-16, are insulated from each other in yand are carried by an insulating block '20, fixed on the front portlon of the stop motion supporting "bracket The electricalconducting rod 19 and shaft 16, are shown passing completely through fsaid block and projecting laterally 5 therefrom and'at their short threaded projecting ends opposite the detectors are provided with nuts 21, independently clamping the rod and shaft to the block and forming bindlng posts for the electrical connection of conductors 22, 23. The shaft 16,'is preferably axially movable or turnable in the block for the purpose ofadjusting the stop end. 18, up or down to vary the upward l1m1t ofthe swing of the detectors for .the purpose of increasingor diminishing the tension on the silk strands passing through the eyes. thereof. The shaft is clamped in the desired axial adjustment by tightening the nut of the binding post 21, thereof.

The conductor 22, extends from any suitable source of electrical energy and the shaft 16, and conducting-wire detectors' thereon are constantly in circuit therewith and the circuit therefrom to the conducting and stop rod 19, is normally broken because of the normal separation of the detectors from the rod 19.

The conductor 23, extends from the'binding post 21, (electrically connecting rod 19 and said conductor) to normally dead electro-magnet or motor 24, and electrically connects the same with rod 19. The magnet 24, is arranged in the box or casing,

hereinbefore mentioned, and is insulated from the walls thereof and constitutes the releasing device for the trip mechanism normally holding the binding bobbin grip or lock out of action. v

The binding bobbin stop and locking or gripping device comprises a pair of upwardly projecting oppositely arranged cooperating aws 25, 26, having concaved faces which if so desired can be provided with friction gripping faces 27, formed by leather or other suitable friction or cushioning material secured thereto. These jaws are approximately alike `in formation and each is formed with a depending shank or lever 28, rigid with its jaw. The two Shanks are crossed and at the point of intersection are pivotally jointed together to form a fixed fulcrum point. This fulcrum is formed by a pin or stud 29, projecting laterally from the upper portion of the stop motion bracket arm, and supporting the bobbin gripping jaws. The lower ends of the two levers formed by the jaws and their shanks 28, are pivotally joined respectively, to the under ends of a pair of links 29", which at their lower ends are pivotally joined to the upper end of a vertically movable slide 30, passing vertically through said box or casing and :guided thereby in its vertical reciprocation. The toggle or lazy-tong arrangement thus provided, is such that when the slide 30, moves upwardly the gripping jaws will be swung apart to non-gripping or inoperative position, but when the slide moves down said jaws will ^be moved toward each other to gripping position.

eans are provided, preferably constantly acting, to throw the slide downy wardly to move .the jaws to gripping po-l sition with sufficient force to perform their locklng or stopping function. As a meanswhich can be conveniently employed for this purpose, I` show an expansive coiled spring 31, on the slide and within thebox andcompressed between the top wall of the v I box and 'a loose or slidable collar v32, on the i ally projecting tooth or upwardly facing shoulder 39, arranged a distance above the -mounted in the slide.

slide. Means are also provided for normally holding the slide elevated against the tension of said spring to hold the jaws in their normal inoperative positions, said means comprising a trip whereby the slide can be quickly released to permitJ its spring to act in forcing the same down to bring the jaws to gripping position should a thread or strand break. As an example of means which can be employed for this purpose. I show a vertically disposed elongated flat dog 33, arranged longitudinally of the slide in a longit-udinal slot cut therethrough. This dog is carried by and projects beyond the slide and is mounted to rock on a transverse pin 34, arranged near the upper end thereof and oy which the dog is carried and The transverse fiat upper end of the dog is arranged beneath the loose collar 31, and forms the stop limiting downward movement of the-collar, and

j the formation of said upper end of the dog is such-that the'pressure of the spring 31,y

thereon through the collar, yieldingly holds v thefdog in its normal upright position so that the dog can swing to move its lower end' laterally only by slightly raising said collar against the tension of said spring.

The lower end of the dog is formed with a laterally projecting tooth or downwardly facing shoulder 35. The trip for engaging the tooth 35l of said dog to normally hold the slide-and gripping jaws in set or inoperative position comprises a vertically rocking trigger, catch'or lever mounted to rock on a fixed transverse shaft or pin 36, and comprisingan elongated lupwardly extending arm 37,having a tooth or shoulder 38, at its upper extremity and at its lower end mounted on said pin 36, and having a laterfloor of said casing or box and normally in the path of movement of the dog tooth 35.. The arrangement is 'such that when the slide isin'its normal set or elevated position,

the tooth 35, of it-s dog will rest and bear down onthe shoulder 39, of said lever or ,tripandwill' thereby be upheld while the 'pping jaw-throwing spring tends to swlng said lever or trip to remove shoulder 35, from Ithe path of the dog and to swing than perend'of the arm 37 inwardly and latera ly away from the vertical wall of the box (against which the upper end of the arm normally vvrests. The said trip is normally held and maintained in its locking `or slideupholding position by` the extended or stop le1'1d4=0,".of vthe vertical-ly swinging horizont-allyarranged r'lriagnety armature 41, fulycrumed or pivotally` mounted between its ends in said box on horizontal or transverse lfixed pin ,42.* The stop end 40', of the armature,- normally bears down on the top edge v11 the` ytrip im: 37, with' the shoulder 38 of said arm bearing inwardly against the end edge of said stop end which thus holds the trip arm in its normal position and against inward swing and upholding the trip shoulder 39 in its elevated position sustaining the slide.

When the magnet is energized its armature is drawn down thereby lift-ingvits stop end from holding engagement with the trip arm shoulder,whereupon the gripping-jawthrowing spring will rock the trip to release the dog therefrom and permit downward movement of the slide. The downward movement of the slide is limited by the engagement of the lower end of the dog with the floor of the box or casing, thereby limiting the closing movement of the gripping jaws. ,The limit of the closing movement of said jaws can be varied by raising or lowering the pivot of the dog in the slide. v

The instant the dog is released from the trip, the trip is returned to its normal operative position by a spring 43, applied thereto and also to the armature to normally-hold the same from the magnet and its stop end i to the trip arm. The trip is swung by spring 43 to its normal position and the armature stop end immediately moves down on the trip arm and holds the same in operativel set position.y When the gripping jaws are swung open or restored to their normal set position',` by hand, and against the tension of the jaw-throwing spring, the slide is drawn up and during this operation, the slide dog, which had been swung laterally on its downward movement, bears against the edge ofthe trip, and when the tooth of the dog moves up past the shoulder of the trip, the dog immediately swings to its normal upright 4position with its tooth resting on the trip shoulder and thereby holding the parts in set position with the jaws open The gripping jaws .are arranged below and in front and rear of the friction hub of the winding bobbin and when set orin their, normal positions are disengaged therefrom so as not to interfere with the free rotation of the bobbin. When, however,

.a strand passing to said bobbin breaks, the

magnet is 'immediately energized and the jaws are released and tightly grip said hub of the bobbin and lift the bobbin to raise said hub thereof from driven contact with the friction driving disk. The action of the. jaws is so rapid that the jaws on the parting of a strand almost instantlyvgrip the tion/of tying the broken strand is completed and beforethe bobbin is dropped into frictional driving engagement with its driving disk, and as it is necessary to open the gripf ping jaws. before t-he bobbinv can be thus turned by hand, -I provide means for holding the bobbinlifted from its driving disk after the gripping jaws have been opened and removed from grippingengagement with the bobbin. For* example, I show one of the grippingjaws provided with a lifting finger 44, arrangedto one` sideof the jaw and beyond the end of the bobbin and projecting downwardly and inwardly in the vertical plane of the end trunnion of the bobbin. This finger is mounted to swing vertically under friction on a transverse shaft in the upper end of the jaw and is provided with an upwardly projecting Afinger piece 45, whereby the finger can be lmoved to-and from normal and lifting ,-or supporting positions. The linger is normally swung down from operative position with respect to the bobbin trunnion, but when a thread has broken and the jaws have gripped the bobbin, the linger piece 45, lis then swung laterally and the lifting finger thereby swung up into lifting engagement with the trunnion-of the bobbin gripped and elevated by the jaws. The jaws can then be opened to "setposition A releasing the bobbin, and the lifting finger will prevent the bobbin dropping into driv engagement with the friction disk. While t-hus held by the finger the bobbin can be freely rotated by hand. When the broken 4thread has been tied and the operator desires to again start the bobbin on its winding operation, the finger piece is swung forward and the finger is vthereby lowered droppingthe bobbin'onto its driving'disk.

, The electric circuit for energizing the trip operating ma et iscontrolled by any one of vthe hereinbefore mentioned detector arms and is' normally broken because of theseparation of the detector arms -17 (forming one contact f the circuit closer or switch) from the Conducting stop rod 19 (forming the ether ,end stationary contact-oftheswitch bin has again started to wind and has thus restored the tension vto the strand. necessary to lift the detector andbre'ak the circuit.

Suchbeing the state of facts, in the specific Aexample illustrated, .it is obvious that.

if the ljaws are opened to hold the bobbin V`up by the lifting finger, as hereinbeforelescribed, the magnet A. would 'again immediately release the trip) and cause closing of the jaws, unless ,some means are provided closed switch in circuit with the magnet and adapted tobe opened by the closing of the gripping jaws. To this end I provide 'a knife switch comprising a. depending knife contact 47, carried by one of the jaws'and in circuit closing` in circuit therewith and usually through the j same to the stopy mot-ion supporting bracket which can be electrically connected withA the return to the source of electrical energy. I

\show.,this knife contactlcarried by thefinger piece 45, to swing therewith and with the bobbin lifting finger. 4The stationary member or contact 48of the knife switch is fixed to the upper end of the arm of the stop motion supporting bracket and is suit-ably insulated therefrom but is electrically vcon nected with the magnet coil'by connection 49, so as to be in circuit with said coil. The arrangement of the switch contacts is such that, when the jaws are in their normal set position and the lifting finger is in its normal depressed position, said contacts will be in engagement and the switch closed to complete the circuit from the magnet coils to t e met-al supporting frame of the stopv motion. When the jaws move to bobbinf gripping-and-lifting position, the knife switch is opened inasmuch as the jaw carrying the knife member of the switch moves the same from contact with the fixed memberl of the switch, and the circuit is thereby broken and the magnetv denerg'ized even though the detector be in circuit-closing position.A The knife switch still remains open and the circuit broken when the jaws are again thrown back to set position inas- 4much as the movement of the lifting finger to bobbin-lifting position throws the knife member of the switch forward from po-sition where it willengage the fixed 4switch mem- -ber when the jaws are opened. The magnet will thus remain denergized until the bobbin vis ready to start its winding operation and has been restored to winding posi- -tion by the lowering of the lifting finger, which action throws the .knife member offthe switch into circuit closing engagement with the fixed lmember thereof, but before this switch is thus closed,the circuit has been broken by the lifting of the detector arm or arms.- i v j As.v at present advised, I do not wish to limit all features ,of myy invention to any particular' ,trip mechanism .and releasing means therefor nor to the electrical devices controlled bythe breaking of a thread, inasmuch as other means migh `be employed for controlling my gripping 'aws, and furthermo-re'I do. not wish to limit certain other v features of my invention to the particular bobbin stopping means described, and it is evident that various changes and modifications might be resorted'to in the forms, conthe desired adjustment, a swingable detector arm having a thread eye at its free end, said arm being mounted to swing on said shaft, means to limit the movement of the arm in one direction, and a stop portion carried by said shaft to limit the swing of the arm in the opposite direction, the position of said sto portion with respect to the arm being adjustable by rocking the shaft.

2. In a "stop motion, a rockable shaft,

` means for securing the same in a. desired axial adjustment, a. swingable detector arm mounted to rock onsaid shaft and having a thread eye, said shaft having a. back-turned end above said arm forming a stop to limit the upward movement of the arms, a stop rod, said arm having a rear projected end to engage said stop rod to limit the downward movement lof the arm.

3. In a stop motion, a support, a block of insulating material thereon, a conducting contact rod projecting from and carried by said block and provided with means for connecting an'electric conductor thereto, a rotatably adjustable conductin shaft mounted in said lblock and projecting t erefrom parallel with said rod and having means for coupling an electric conductor therewith,I and a detector arm of conducting material mounted to swin on said shaft, and having a thread eye an a rearwardly projecting stop end normally out of contact with sald rod and ada ted to move into contact with the rod to limit the downward movement of the arm, said shaft provided with a stop arm adjustable therewith to limit the swing of said detector arm.

4. In a sto motion, a vertically movable tension and Idetector arm having a thread eye and an electric-contact and stop end, a support on which said arm is fulcrumed, an adjustable arm-engaging stop carried by and moving with said support and limiting upward movement of sald arm and determining the tension thereof on the thread, and a stationary electric-contact stop adapted to be electrically engaged by said end when the detector drops from normal position.

5. In a stop motion, a spring conductingmaterial tension and detector arm` at its vertically movable free end having a thread eye, a conducting shaft on which said arm is mounted to swin a stationary contact, said arm formed wit a coil rockable on said shaft and terminatingY in a free contact end normally out of contact with said stationary contact and adapted to engage the same when the arm drops to normal position, and a stop limiting upwardswing of the thread eye.

end of said arm and formed by a bent-back end of said shaft.

6. In a stop motion, in combination, stop `mechanism, electric controlling means therefor comprising an electric motor, a support, and a normal open switch controlling said motor and com rising an axially-adjustable conducting sha t providedwith and carrying a detector-arm stop, swingable detector arms of conducting material formed with intermediate bearing eyes rockable onsaid shaft and having thread eyes and movableA contact portions extending radially therefrom, and a conductingl rod parallel with said shaft and forming t e statlonary switch contact and adapted to be engaged by the contacting portion of any detector arm when the same drops from normal position.

7. A stop motion, comprismg a supporting bracket, circuit closing detector arms carried thereby, a pair of coperating bobbin gripping devices mounted thereon, operating and controlling means for said dev1ces carried by said bracket andcomprising an electric motor in circuit with said detector arms.

8. A sto motion comprising coperating ybobbin liftmg and clamping levers, in com bination with actuating means, and control- ,ling devices comprising a thread receiving detector arm, and an electric motor in circuit therewith.

9. A stop motion comprising winding-bobbin gras ing and elevating jaws, in combina- -tion wit means for actuating the same on their operative movements, means normally holding said jaws in set position, and a trip device.

10. A stop motion comprising coperating bobbin clam ing and lifting jaws, actuating means there or, and controlling devices for said actuating means.

11. A stop motion comprising a pair of pivoted opposing coperating clamping jaws, means for holding said jaws set in inoperative position, controlling devices for said means, and jaw actuating mechanisms.

12. A stop motion comprising a pair of cooperating clamping jaws provided with means for simultaneously moving the same in opposite directions, a trip mechanism for holding said jaws set, and devices for actuating said trip.

13. A stop motion comprising a pair of cooperating pivoted bobbin clamping jaws, in combination with a spring and connections for simultaneously movin said 'aws to clamping position, means or holdlng said jaws in opened or set position, and mechanism controlled by the breaking of a thread for operating said means to release said jaws for movement to clamping position.

14. Astop motion comprising bobbin lifting and clamping jaws, jaw operating means, and an independently movable bobbin lifting device carried by one of said jaws.

15. A stop motion provided with a pair of coperating bobbin clamping jaws, jaw operating means, and a pivoted bobbin lifting finger carried by one of said jaws.

16. In a stop motion, in combination, bobbin clamping means, actuating devices therefor, and independently movable lifting means carried thereby.

17. A stop motion comprising a pair of cooperating bobbin clamping jaws, means for simultaneously moving said aws in opposite directions, controlling mechanism therefor, and a vertically movable manually operated bobbin lifting finger carried by one of said jaws and movable independently thereof.

18. A stop motion comprising in combination, a supporting bracket, a pair of cooperating bobbin clamping jaws extending upwardly therefrom and pivoted thereto, a spring actuated slide coupled to said jaws to simultaneously move the same in opposite directions, trip mechanism for holding said slide and the jaws in set position, and a releasing device for said trip mechanism comprising a broken thread detector.

19. A sto motion comprising in combination, oppositely-movable coperating bobbin lifting and clamping jaws, a spring device foractuating said jaws to clamp the bobbin agai/nst rotation, a trip mechanism for norv mally holding said means in set inoperative position against the tension of said spring, and releasing means for said trip mechanism comprising a movable thread receivingdetector. s

20. In combination, in a stop motion, a bracket comprising a box and an upwardly extending arm, bobbin gripping jaws fulcrumed to said arm, a spring actuated slide movable through said box and pivotally joined to said jaws to simultaneously swing the same in opposite directions, a trip mechanism in said box to normally l hold said slider set against the tension of said spring, 'an electric motor in said box 'for releasing said trip mechanism, and a movable thread receiving detector arm carried by said'bracket and controlling the motor actuating circuit.

21. In a stop motion, in combination, winding member stopping means, an elec- .trioI switch controlled by the movement thereof and comprising.Y an independently movable manually operative contact member, actuating mechanism for said means, a trip mechanism therefor, and a releasing device for said trip mechanism comprising an electric motor in circuit with said switch and a thread receiving detector arm circuit closer in circuit with said motor.

22. A stop moti-on comprising winding member gripping jaws, means for simul-v aws, and a movable contact carried by and moving with one of said jaws.

23. A stop motion comprising oppositely movable pivoted winding-member clamping jaws, a manually operated member lifting finger carried by one of said jaws and manuallymovable independently thereof land provided with a switch contact movable therewith, anda stationary coperating contact fixed with respect rto said jaws.

24. In a stop motion, in combination, winding member sto-p means, a spring actuated slide for operating the same, a spring actuated, laterally swingable dog carried thereby, a swingable trip therefor for holding said slide in set position against the tension of its spring and comprising a laterally swingable arm provided with a shoulder for engaging said dog for holding the slide set, and means for releasing said arm to permit disengagement of its shoulder from said dog.

25. In a stop motion, in combination, winding member stop means, a slide for actuating the same, an actuating spring on the slide for moving the same in one direction, a laterally swingable dog pivoted to lthe slide and held in normal position longitudinally ofthe slide by said spring, a trip to engage said dog to hold the slide set against the tension of said spring and releasing means for the trip.

26. In a stop motion, in combination, a slide, stop means actuated thereby, guides for said slide, a spring acting on said slide to force the same on its operative stroke, a dog arranged longitudinally of said slide and fulcrumed thereto to swing laterally thereof, said spring acting onsaid dog to yieldingly hold the same in normal operative position with respect to said slide, said dog projecting laterally beyond the slide to engage a guide and limit the movement of the slide in lone direction, a trip device arranged adjacent to said slide and having a shoulder to engage said dog and hold the slide set against the tension of the spring, and means for releasing said trip device to permit reciprocation of the slide.

27. a stop motion, a box, an actuating slide movable therethrough, a dog pivoted thereto to swing laterally thereof and projecting laterally therefrom, aloose collar on said slide and resting on said dog, a slideengage' said dog and hold the slide set against the tension of its spring, a rockable trip lever to engage said arm and normally hold the same against rocking in a direction to release said dog, and means for, actuating said trip lever to release said arm.

28. In a stop motion a pair of crossed pivoted levers at their free ends formed with opposing bobbin lifting and clamping jaws, actuating means connected to said levers and constantly tending to swing the same to bobbin gripping position, means normally holding said levers in inoperative or set po sition, and a trip mechanism for releasing said holding means.

In testimon whereof I affix my signature, in presence o two witnesses.

MICHAEL C. RYAN.

,Witnessesz FRANK J. Loomis, CHARLES F. Loomis.

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