US696657A - Weft-replenishing mechanism for looms. - Google Patents

Description

N0. 696,657. I Patented Apr. i, |962.

J. M. SHAY.

WEFT REPLYENISHING MECHANISM FOR LODMS.

[Application l'ed Aug. 18, 1900.

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N6. 696,657. Y Patented Apr. l, |902.

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WEFT REPLENISHING MEGHANISM FOR LOOMS.

(Application led Aug. 16, 1900.)

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"9.696,657. Patented Apr. I', i902.

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WEFT'BEPLENISHING MECHANSM FOB LOUMS.

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N0. 696,657. Patented Apr. l, i902. Y J. M. SHAY. f

WEIITT REPLENISHING MECHANISM FDR LUOMS.

(Application med Aug. 1s, 1900.)

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Patented Apr. l, v|902.

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WEFT REPLENISHING MECHANISM FUR LUOMS.

(Application l'ed Aug. 16, 1900.)

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Patented Apr. I, |902.

J. M.- SHAY.

WEFT REPLENISHING MECHANiSM FOB LDMS.

(Application filed Aug. 16, 1900.1'

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(No Model.)

Patented Apr. l. |902. J. M. SHAY. WEFT/REPLENISHING MECHANISM F03 LOOMS.

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.1. M. SHAY. WEFT REPLENISHING MECHANISM FOR LOOMS.

Patented Apr. l', i90-2.`

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J. NL SHAY.

WEFT REELENISHING MECHANISM FDR LOOMS.

(Application led Aug'. 16, 190D.)

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No. 696,657. Patented Apr. l, |902.

J. M. SHAY.

WEFT REPLENISHING MECHANISM FOR LMS.

{Application filed Aug. 1B, 1900.)

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Patented Apr. I7 1902.

J. m. sHAv. WEFT REPLENISHING MEGHANiSM FOR LUUMS.

(Application filed Aug'. 16, 1900.)

(No Model.)

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1HE nofws PETERS no. mofufLmflmwAsHlNsTnu u c No. 696,657. J. M. sHAv.

WEET REPLENISHINGHECHANISM FOR LOOMS.

(Application led Aug. 16, 1900.)

Patented Apr. l, |902.

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J. M. SHAY.

WEFT REPLENISHING MECHANISM FOR LUUMS.

Y (Application flad Aug. 16, 1900.) (No Model.)

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s mams Pneus no maremma. wuumurcm n c UNITED STATES .IEREMIAH M. stuw, or FALL RIVER, MASSACHUSETTS, Assiettes or ONE"= HALF To A1B. PI-TKIN MACHINERY COMPANY,.OF PROVIDENCE, RHODE ISLAND, lA CORPORATION or RHODEISLAND.

SCIFICATION forming part ci Letters Patent No. 696,657, dated April. 1, 1902.

l Application filed August 16, 1900 Serial No. 27,045. (No model.) 5

To all whom it may concern:

p -Be it known that I, JEREMIAH M. SHAY, a

`ciiflnen of the United States, residing in Fall River, in the county of Bristol, in the State 5 of Messachnsetts,l have invented certain new `end useful Improvements in Weft-Replenshing Mechanism for Looms; and I declare the following to be a. specification thereof, reference being hadv to the accompanying drew- Io ings.

.. me .aloof weaving as carried out with,

loomss 'nowcom monly constructed they objectiomhs been experienced that when the weft lircitks'or the cop of the shuttle becomes I 5 exhausted the loom is automatically stopped through well-known connections and theshuttie therein must be removed anda, fresh s lmttle supplied by the hand of the operator before the said loom can again be zo eration; l

The object of the present invention is 4the provision.` of Ineens capable of perfect automatic operation for the placing in proper po sition of a. fresh Ashuttle when the weft breaks 25 or runs out, the said means. being also operated to'electthe discharge of the empty shuttle when the fresh one is being supplied to the shuttle-box.

Myinvention consists of a receptacle for 3o receiving the yfresh shuttle and operating de vices therefor in connection with the moving parts of' the loom for automatically placing a, fresh shuttlein the shuttle-box et the proper moment, and thus placing the fresh shuttle. 35 contained by it into proper position to be" struck by the picker-stick at its'next throw.

Itcon'sists,further,intlie peculiar-consiiruc`f` vtion and -arrangemedtfol theshuttlel-box and o shuttle is discharged. A,

" Iii-further conssts ofpsliesrs or cutters'vfor` automatically cutting lthe weft or thread pro- 4'-jecting from theselvageof the clothafter the.

.fresh-shuttle has' been thrown throng-h.. h

- "The deteils'f COilstruction relating A*to th ffvarious Operating devices' and-their arrngey `mentale ,constitutes materiel part; of this in- .-ventiongs enabling me to accomplish the de- 5o sir'cdrc ult in :t simple and practical manner.

ngnnechanism by which 'the empty Figure lis e. central vertical sectional View of the loom, showing .the position of the viirions parts when the shuttle is in,y the box 'at the left-hand side of the loomend'thelay'has come to the end of its reartverdzmoton. Fig 5 5 L 2 is a. central vertical sect p ewvgf'a. 0rtion of the loom, showing th ppsitionogfho A various parts afterthe we fhhtgs'beenthrown i; through the shed of th'e werps the'shut tie has enteredthe vshuttle-box'end the. .layf6ojlj l' has come tothe end of its forwardmotiomjff Fig. 3 is a vertical sectional view of a portion of the loom, showing the positionne;` the-vaf-j rions parts' after the weft. isb'roken oi'fhas been exhausted and the empty-.shuttle is about 'to be discharged, the lay haring Ytifeveled three-fourthsof its rearward motion.; 4f' is the same sFig. v3 with the adliti n; ofthe shuttleejection'. mechanism to `remove the I empty shuttle 'from-the shuttle-box. Fig. 5 7o is a. vertical sectional view opposite to Fig'. 2. Fig: G is a. vertical sectional view opposite to.- Fig. `3, showing the position of the various "parte as the fresh shuttle is placed in the shuttle-box, the lay having reached-the end 7 of its rearward motion. Fig. 7 is afron't elcvation of the upper portion of the 1eft-hand end of the loom. Fig. 8 is a. front elevation of the upper portion of the right-hand end of the loom'. Fig. 9 is a. top plan viewof the lefthand end of the loom. Fig. 10.is a, top plan view of the right-hand end of theloom. Figs. 1 l, 12, and lshow in side elevation the shears or cutters and means for operating the same. Figs. 14 and 15 show in side elevation a. modif fied form of the shuttle-ejecting mechanism.; Fig. 16 s{e ..trans"verse .verticalsection ofthe 'f shuttIeI-reelvngpen and adjacent shuttleboxin position when the shuttle hasbeen dis#4 charged into the pen. Fig. 17is a side elevation .of the 'switch-block. Figui-8 is a sectional View of the seinees seen on lineof Fig 317. Ifi'g," 319 isa.' top plan of .the shuttle in the, #voi yand thepnsher or; shlittle-transferieren. its YAnormal position.` Fig. .2O is a, sectional View` fof thesem'eon line .e of Fig. 19. ',.Fig 21S vo. top plan'view o fthe saine parts esatte illust.,l treted inFig. 1'9, showing the preliminary in gulerpositon ot the shqttle incnilering th s lmttle`-bo'x1 Fig. 22is n front elevation of tllirgsame, Fig. 23 is a top plan of'the bunter "idi'eclianism for operating the cutting de- '-Figs. l and 14 are omitted to vices as seen when the lay is at the limit ot' its backward movement. Fig. 24 is a View ofthe same as seen partly in elevation and partly in section on line 1/ -y of Fig. 23. Fig. is a top plan of the same parts as seen when the la`y is at the end of its forward movement and the bunter is in contact with the lever- `arm of the mechanism operatingthe cutting devices. Figs. 26 and "7 are views of said mechanism as seen partly in elevation and partly in section on line w w of Fig. 25. Figs. 28 and 29 are detail views. Figs. 23 to 29, inelusive, are drawn on au enlarged scale. Figs. 30, 3l, and 32 are detailviews,in an enlarged scale, of certain portions of said invention. In Figs. 2, 3, 4, and l5 the reeds shown in simplify said drawings. I

In the. drawings, l represents the frame of the loom, 2 is the arch, 3 the harnesses, -t the lay, 5 the picker-stick, 6 the breast-beam,

' 7 the dagger, 8 the sand-roller, 9 the clotl1- roller, l() the gear for the cloth-roller, and 11 the feed ratchet-gear, all of the usual construction and operating in the well-known manner. l

The shaft 12 has the cams 18 14 thereon, the former of which operates the picking-arm l5 and the latter of which operates the bent lever 16, as usual. The shaft l2 is operated in the direction of the arrow, Fig. 1, through a suitable gea-r fastened to the opposite end of the shaft and meshing with the gear 17, which is fastened to-the crank-shaft 1S, Fig. 8.

A lling'detector, operative to show the presence or absence of the filling or weft thread in the warp-shed, consists of the weftfork 19, which is pivotally mounted at 2O to .the sliding plate 2l, the latter being movable in suitable bearings upon the casting 22. Said eration, the weft or casting is fastened by bolts to the breast-beam 6. The end ofthe weft-fork nearest the breast beam is hooked, as seen in Figs. 1 and 2, and said hooked end is elevated at each throw of the shuttle whenever its opposite endA is depressed by' the weft-thread, which has been carried across. At each revolution of the shaft '1.2 the cam 14 thereon imparts an oscillatingmovementto the bentlever 16,1nountcd pivotally at 225 on a bracket of the frame 1; but thel elevation of the hooked end of the weft-fork, as above explained, lifts said endA out of the path of motion l of the upper bent end of the leverlb'.

VVheu the loom is in opfilling thread is properly laid between the warps with in the shed formed by the movements ofthe harnesses 3 as the shuttle is struck by the pickers 24v of the pickersticks 5 and thrown from side to side. of thelay.

The weft as the lay at comes forward lies in the path of the fingers of the weftfork, thus depressingr that end of the weft- `fork and raising its hooked end, as already stated. These parts and the operation of these in the ordinary looms for plain weaving.

' My shuttle changing mechanism, which constitutes the principal feature of my invention, is set in operation by the engagement hooked end of the weft-fork 19. If the weftthread breaks or the weft in the shuttle becomes exhausted, the shuttle enters the shuttlc-box, as usual; but when the lay L comes forward there is nothing to depress the rear end of the weftfork, as before, and when the lay 4 has nearly reached the limit of its forward motion the front hooked end of the weftfork is caught and engaged by the upper end of the bent lever 16 (see Fig. l) and draws forward said weft-fork and the sliding plate 2l, to which 4it is pivoted. This forward movementof the sliding plate causes the front end thereof to bear forcibly'against and push the upper bent end ofthe lever 25, which leand 2, thus partially rotating the said shaft 26. Said rock-shaft is mounted in suitable tened to the breast-beam 6. On the opposite on by the screw 29 is the lever 30. At the bottom of the lever 30 a link bar or rod 3l is loosely pivoted, as seen at S2, and at the opposite end of said link bar or rod 31 it is pivoted, as shown at 35i, to the end of a level arm 34, which is fastened to the axis of a switch 36, which switch and lever-arm 34 move together. The switch 36 is mounted in suitable bearings in the block or casting 37, the latter being secured to the side of the loom. 'lhe block or piece 37 has on its outer surfacea groove cut therein, (represented by the dotted lines 38 and 39,) and it is also slotted to form a guide or way, as shown by the dotted line 40. (See Figs. 5 and 6.)` The face view of said switch-block and a vertical section thereof are shown in Figs. 17 and 1S, in which 38, 39', and 40 represent, respectively, the upper and lower edges of said groove and the bottom of said slot. tVhen the switch 36 is iu the position shown in Fig. 5, its under side is continuous with the upper edge ot' the groove in said block 37; but when said switch is in the position shown in Fig. 6 its end is in contact with the lower edgrI SSS ot' said groove. The rocking of the shaft 26 caused by the movement of the le"er 25, resulting from the the consequent sliding of the plate 21,'as alieady described, moves the switch 36 from its inoperative normal position (shown in Fig. 5) toits operative position. (Shown in Fig. 6.)

Upon a rock-shaft ell, which extends along the lay from side to side and which is m^unt ed in suitable bearings 42 and 4t2-l, Figs. 'i and bf, is fastened a lever-arm 44, whose lower end is provided with a friction-roller -l-.S and whose opposite end is formed into a sectorparts are all old and well known, being used.

of the bent upper end of the lever 16 with the bearings 27 28, Figs. 9 and 10, which are fas' engagement ofthe upper end ofthe lever 16' with the hooked end of the wei'tfork 19 and' Sel ver is fastened to .the rock-shaft 26, Figs. 1

end of the rocleshat't 26 and fastened there- A ico TIO

uerlarm 44.

The shuttle-boxes used in my loom constitute the principal and most im-Y eeegesv shapes gem: 46. The levier-m1111144 is usually inthe position illustrated in Fig. 5,A and as the lay moves back and lforth the frictiom roller 45 of said lever-arm 44, projecting into the groove 38 39, is confined thereto in its `movement from end to end thereof; but when the switch 36 has been moved by the rockshaft 26 and its connections tothe position shown in Fig. 6 said relier 45 as the lay moves backwardruns up along the upper Isurface `of the switch' 36 to and along the bottom `40 of the slot of the block or piece 37. The

portant part of my invention. At each'end of thelay is a shuttle-box, designated in the Edrawngs as 47 and constructed as follows:4 IIt'h'as a' front and back side and one closed' end, but has no bottom. vWhen it'is in its usual horizontalposition, as in Fig. 1, it rests on `the top surface or race-plate 48 of thev lay;

but when it is turned up into its perpendic' ular position, 'as in Figs. 3 and 32, its bottomy Each ot said shuttle-boxes 47 hasis open.

'I at itsl ends earpieces 49 andf50, by which it is loosely and rotatably mounted on the rod 51,L the latter being mounted loosely in brackl ets 52, bolted or fastened to the front ot the lay 4. The earpiece 49 of each shuttle-borv 47 isprovided with a sector-shaped gear 53. I 'On the rock-shaft 41, at the left-hand end thereof, is fastened a sector-shaped gear 54. Lillie gear 46 of the lever-arm 44 meshes with the gear 53 of the right-hand shuttle-box 47, and the gear 54 on the opposite end ot the rock-shaft 41 'meshes with the gear 53 of tho left-hand shuttle-box 47. When by the rocking ofthe shaft 26, caused by the engagement and movement together ot' the weftforlc 19 and the upper end of the bent `lever 16 and the, connections of said roclcshaft 26, the switch 36`is moved into the position shown in'Fig. 6, the friction-roller 45 ot the leverarm 44 runs up said switch into. the upper slot of the block 37, thus changing the angular direction of the lever-arm 44, and thereby moving the gear 46 of said lever-arm, and a similar oscillatory movement is imparted to the gear @4, because both -the gears 46 and 54l are fastened to the shaft 41, which is thus rocked. These gears 46 and 54 so moving impart motion `to the gears 53 of the shuttleboxes 47 Thus said.'shuttleboxes begin to turn up when the lay has performed nearly one-fourth of its backward movement, and bythe time when the-lay has completed its backward movement the-shuttle-boxes 47 have comeinto the position shown in Fig. 3. Behind the right-hand shuttle-box is a stationary reservoir or case 55 to hold the spari shuttles, which are to be supplied one by onev improved to the shuttle-boxes as the operating-shuttle becomes empty or.: its .weft-thread is ,h oken. This reservoir or case 55 is wholly independent of the lay, being sufpported'by braces56'Y from the arch 2. v It has' an open flaring top f il Y and at its front and rear at the bottom an j i open space exceeding somewhat in 'width the I Width of the shuttle. In this reservoir spare shuttles are packed', each supplied with asuitable kquantity'of weft-thread, and there. isla verticalopening in thefront of the case to enable the operator` to see the number of spare shuttles in the reservoir. On the front of ythis case or'reservoir 55 a lever forrocker arm 57 is pivoted ait 5S, the, shorter arm of this lever being a weight or counterpoise.

The upper'end of the lever 57. is bent, as shown at 59 in Fig. 5, and-the loose end of each of the weft-threads from the spare' shuttles in .the reservoir is carried to and wound around said bent end of the'lever, as seen irl-Figs. 5 and 10. On the sides of the case 55inside the same andsat the bottom, are placedtwo open'- ings or yielding detente, as seen at 55 in Fig. 19. On therock-shaft 4l is also fastened a 'lever-arm 60, Figs. 5 and 6, and at its end is pivotally connected a link-bar 6l, slotted at its end. On 4the binder-shaft 62'and fastened thereto is the lever-arm 63, from which'projects .the bent or hooked arm 64, whose end the lever 67, (which is pivotally mounted at 68 to-a bracket on the'loom-vframe.) I This occurs when the lay has traveled about three-v fourths of vits backward motion,'and its furthery rearward movement causes the arm 66 to push and move said lever 67. The lever 67 atfits top is pivotally connected at 69 with' a link-bar 70, to which is fastened at 7l a pusher or shuttle-transferrer 72. The forward end of the link-bar 70 is supported by a bracket 73, as shown. The reservoir 55 has a rearward extension 74, opening into the lower portion thereof and receiving the pusher 7 2. The rearward movement of the lay 4, in the swords of which vthe binder-shaft 62 is mounted, causes the end of the lever-arm 6640 push and move the lower end of the lever 67, which movement of the lever 67 by the link-bar 70 moves the pusher 72 from the positionshown AIIC! in Fig. 5 tothe position shown in Fig. 6. `The' result of` this movement of the pushern72 is that the lowest shuttle in the reservoir 55 (shown in Fig: 5) is moved out of the resbrvoir-into the shuttlerbox, as illustrated in ,Fig 6. The springs 55' in said reservoir (see .rngorvibrations of the loom when operating;

in'remo'ving'said shuttle from the reservoir intothe shuttle-box. Onihe withdrawal of theepusher 72 by force of the spring 76 the lowest shuttle at that ytime in the-reservoir ation, as seen in Fig. 19.

falls by its weighi to the bottom of the reserlVoir, to'be pushed into the shuttle-box when-` ever the pusher is operated again, as above described, said s pring-detents in the meanwhile pressing on the two pointed ends of said shuttle to hold 'it in place awaiting said oper- The binder-spring 65,Which by this movement has been stretched, as seen in Fig. 6, is by the forward movement of the lay 4 relieved from tension, and the arm 6 resumes its former position, as in Fig. 5.

The mechanism for removing the empty shuttle from the left-hand shuttle-box is as follows: The left-hand end of the binder-shaft 62 is bent, as seen at 77 in Figs. l and 14:, and upon this bent end a binder-linger 7S is fastened. 'lhe usual function of said bindernger 7S is to pressagainst the swell or binder 79 of the shuttle-box 47, as illustrated in Fig. 1; but when the binder-shaft G2 has been rocked, asv already explained, by the lever of the rock-shaft 4l andthe intermediate connections`6l, (i2, 63, and G-Lt said binder-finger comes into the position shown in Figs. 4 and 6. Upon the arch f3,v Fig. 4, is fastened thel receiving-pan SO. This pan is also supported by the brace Si., extending from the frame ot' the loom. A bracket 82,fastene'd upon the side of the pan. S0, serves to support the vertical rock-shaft 83. A bent lever S-t is secured to the vertical rock-shaft 83 at the bottom thereof and is provided at one end with a head and at the other it is connected with a spring S5. An arm 86 is fastened'to the top of said vertical rock-shaft, Figs. 4 and 9. The end of said arm 86 is slotted, as seen -at 87. A rod 88 has a head, through which a screw 89 passes into the slot S7 oi' the arm SU. Said rod S8 is supported by and longitudinally movable in the bearings 90 and 91, fastened to the guideplate 92, which partially covers the ban 80. A push-plate or shuttle-transferrer 9B is secured upon 4the end of the sliding rod S8 and has a bent extension 9i, as shown in hg. 9,

which is slotted at its end, as shown in Fig l. The pan SO is so placed as to be above the top of the left-hand shuttle-box when the latter is in'its normal position and the lay has reached the limit of its rearward movement. At that. time the bot om of the pan 8O extends somewhat over the top of the shuttlebox and partially covers the same. The front` top edge of the shuttle bos'v slightly projeci s inwardly. Fastened to the back of the shuttle-box is the usual spring, as in Fig. 22, which continually presses the swell or binder 79. 'lhus'as the shuttle-boA s turned from its horizontal to its perpendicular position, asalready speciiied, the shuttle therein is held in said shuttle-box by the pressure of the binder 79 on said shuttle. A lever 95 is pivotally mounted on the back of thc shuttie-box, as seen in Fig. 4, and has its short end behind or under the free end of the binder A-79v and its" long end extending at an angle. An arm 9G'is fastened te the side of the pan and projects angular-ly upward. A door or shutter 97 is hinged in suitable bearings on the inside of the shuttle-box and above the path of the travel of the shuttle therein. This door. or shutter is held in a horizontal position even with the top of the shuttle-box by the spring 9 8, which is fastened to the top ot' the gear by the rivet 99 at one end, the

other end sliding loosely in the strap 100 on the door or shutter, as shown in Fig. 9. A spring 191 is fastened to the front of the shuttlc-box and has a projection 102, which passes under the front of the shuttle-box and below the raceway 4 of the lay when the shuttlebox is in its normal position. A mortise 4b is made in the raceway to receive said projection 1Q?. These parts are shown in detail in the enlarged views, Figs. 30, 31, and 32.

This mechanism at the left-hand end of the loom is operated as follows: lVhen the shuttlc-box is turned up into the perpendicplar position and the lay 4 has reached the position shown in Fig. 4, the rearwardly-bent end 77 of the binder-shaft 6 2 is depressed, as be-v fore described, thus moving the binder-finger 7S backward. Then as the lay continues its backward movement the top end ofthe binderfnger 78 comes in contact with the front end IOC) or head of the lever' Se and forces back said 4lever against the tension of the spring 85,. This movement of the lever 8-1 partially rotates the vertical rock-shaft 823, and this turning of the rock-shaft S3 swings the slotted arm 8G, and so draws the sliding rod 88. vAs the lay comes near the end of its backward motion the sliding rod 88, drawn as just described, brings th'e push-plate 93 in contact with the empty shuttle and forces it into the recel ving-pan 80. As the shuttle-box is raised to the-position shown in Fig. 4 the end of the long arm of the lever 95 comes in contact with the arm 96 ofthe pan 80, thus depressing said end of the lever 95 and raising its short end. This short end of the lever in rising lifts the free end of the binder 79 and relieves the shuttle from the pressure `thereof. The shuttle is then free to be thrown into the pan S0 by the action of the sliding rod SS and its push-plate 93, as above cxplained.

Sometimes during the operation of the lloom the speed of the main shaft, which operates the loom, will vary'. If the speed has considerably increased, the throw of the picker-stick will be more forcible, and consequently the shuttle will enter the shuttlebox at a greater velocity, and striking the picker-head in the box, which it so enters, is liable to rebound one or two inches. At such time if the shuttle is about to be ejected from the shuttle-box into the receiving-pan it will IIO I 2 of the right-hand shuttle-box is crowded into the shuttle-box first, as illustrated in Figs. 21 and 22, its ysharp end JForcing its way to overcome the binding pressure of the swell, and this continues until the projection 107 of the pusher '7:3 comes into contact with the {iange 100 of the reservoir 55. of the ,link-bar 7() then pushes forward the outer end of said pusher 72 until its projection 10S strikes against the liange '110 of the reservoir 55, thus completing the proper transfer of the fresh shuttle from the reservoir to the shuttle-box, as illustrated in Fig. 19. In this manner the shuttle acts like a wedge to force the binder or swell of the shuttle-box to allow the entrance of the shuttle into the shuttle-box. (SeeFig. 22.) Theshuttle-boxes when rotated to their vertical position stand up in frontof the path of the picker and above the saine.

The loose ends of theweft-threads from the several shuttles in the reservoir are fastened by winding them around the bent upper end 50 of the lever 57 (ijn the front of the reservoir, Aas shown in Fgs. 5, 8, and 10. Therefore whenever a fresh shuttle has been supplied to the right-handl shuttle-box and said shuttle has been thrown by the picker from said box there is a portion of its weft which extends from the end 59 of'the lever 57 into, through, and out of the said shuttle-box.

This weft-thread I eut off atthe right-hand' selvage of the cloth by the following mech` ansm; On the rock-shaft 41 is a collar-cam 111, secured in place by the screw-112 and having four notches on the edge thereof, one vshown at 113 and one of the .same size and shapediametrieallyoppositconthe saineside, one shown at 11.4 and oneof the same size and shape diainetrcallyopposite on the same side. (See Figs. 10, 23, and 25.) The notch 114 and that diametrlcally opposite are,rhoW- ever, much smaller and more shallow than the notch 113. A ratchet-cam 115 is loosely mounted on the shaft 4,1 and has two dialnet'- rically oppositgarxns 11G 117 extending therefrom, four ratchet-teeth 118 ninety degrees apart, and tw'o diametrieally opposite cam projections 11). A pawl or catch 120is pivoted at 121 on a bracket beneath the lay, Figs. 11, 12,

.13, 23, 24, 25, 26, and 27, and has a downward projection 122, to which a spiral spring 123 is attached. `A ratchet-arm 124 is loosely mountedontheroek-shaft41. Aspiralspring 25 surrounds said shaftv and has one end bearing againsta fixed colla-r, as shown at 126 and the other end bearing against the ratchet-arm 124. A bunter 127 isfastened to anifwojeets from the breast-beam (i. A pawl 12S i'spivoted at 12%) to the side of the ratchet- `arm l2-l, (see Figs. 10, 23, 24, 25, 26, and 27,) which is kept in its normal position by the spring 130. A lever 131 is also mounted on the pivot 121, and the spring 123 is fastened thereto, which extends from the downward projection 122. ',lhe lever 181 is pivotally count-,cieli at one cud, as shown at 132, tothe The further advance j link 133, and said link is pivotally connected at 134 to the lower handle of a pair of shears 135. The upper handle of the shears is pivoted at 136 to a fixed support on the back of the lay. A spiral springr 137 is fastenedv at its upper end to the lever 131 and at itslower end to a fixed support. A bracket 13S projects from the lay, as shown in Fig. 11. The operation of this cutting device is as follows: When the weft-fork 19 has been engaged, as hereinbefore described, by the upper end of the bent lever 16, the rock-shaft 41, through the intermediate connections, is partially rotated, and the collar-cam 111, fixed on said shaft, turns with it. As the cam projection 119 of the ratchet-earn 115 is engaged in the notch 113 of the fixed collar-cam 111 (being held therein by the pressure of the spiral spring 125 on the rock-shaft 4l) this partial rotation of the fixed collar 111 communicates its motion to the ratchet-cam 115 and moves it from the position shown in Fig. 11 to the position shown in' Fig. 12, whereupon the holding-pawl 120 by the force ofthe spring 123 engages the end of the 116, as seen in Fig. 12, and prevents any return movement of the cam 115 when the roekshaft rotates back toits former position. (See also Figs. 23 to 2f), inclusive.) IThe n as the ylay moves forward thero'ck-shaft 4l, partially rotating as already explained, turns the. eollar-eani 111 with it and forcesisidewise the ratchet-cam 115 by causing the projection 119 of said cam 115 to move out of the notch 113 of the fixed cam 111. This lateral movement ment to the'adjacent loosely-mounted'ratchet arm 124, and thereby. compresses the spiral spring 125, which surrounds the Arock-shaft` 41. This lateral movement of the ratchetarm 124 on the shaft 41 brings said ratchetmoves the pawl 128, pivoted hereon, which cam 115 and movesthe projecting arm 116 of the ratchet-cam 115 gives a lateral movecatches, the nearest tooth 118 of the ratchet? projectingarmA IOO IIO

thereof one-fourth of a revolution from the position shown insolid lines in Fig. 1.1 to the position shown in dotted lines in Fig. 12, and thereby the sharp. edge of the cam projection 119 of the ratchet-cam .115 is brought vopposite to the shallow notch 114 of the .cam 111 and is seated therein by the force of the spiral spring 125. .'lhen as the laymoves backward the ratchet-arm 124 descends to its former position, being forced down again by the torsional press u re of the spiral spring 125, whose end is inserted and secured in the side of the ratchet-arm 124. When the lay moves forward the next time, the shuttle has encollar-v tered the left-hand shuttle-box and lcarried` 11S of the\ ratchct-'ea|n 115, rotates said

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