US1739209A - Bobbin release for weft-replenishing mechanism - Google Patents

Description

DSC. I, QZQ, A, L CHEVRETTE LFSSQ BOBBIN RELEASE FOR WEFT REPLENISHING MECHNISM Filed June 8, 1923 2 Sheets-Sheet l ,mmnllllllllllll a/4 /1711 il:

Dec. 1Q, 1929. A. J. CHEVRTTE L73929 BOBBIN RELEASE FOR WEFTVREPLENISHING MECHANISM Filed June 8, 1928 2 Sheets-Sheet 2 40 EM l` L 4. IM wl "i "HW 5l W 42 U1 W'" 44 V M H Imi f S l e v J4" ,5

` P 69 i e @f7 W1" f 2? lil-"gr Z 62 4 0 "l 5 Patented Dec. l0, 1929 @UNITED STATES PATENT OFFICE AUGUSTIN. J. CHEVEETTE, OEWOEOESTEE, MASSACHUSETTS, ASSIGNOR To CROMP- TON a KNOWLES LOOM WORKS, OE WORCESTER, MASSACHUSETTS, A OORPOEA- TION OF MASSACHUSETTS BOBIN vI'IIELEASEI FOR W'EFT-REPLENISHING MECHANISM Application led .Tune 8,

This invention relates to improvements in bobbin releasing' devices more particularly for multicolor weft replenishing mechanisms and it' is the' general object ofthe invention toiprovide a mechanism of this type which will operate when the lay isin its rearward position so'fthat'an-v untransferred bobbin' will be 'released `at atime when it may fall into the bobbin 'can'with' as little interference as possible.

When abobbin has once 'reached transfer position in a multicolor weft replenishing l'oom'there is ordinarily no wayto restore it to the stack of bobbins from which it was delivered should the shuttle be improperly placed'and therefore unable yto accept the new bobbin. Underk these conditions the bobbin must be released, otherwise there would be danger thatit'would be' inserted' in the Wrong shuttle should the shuttles shift on the next pick ofthe loom.

The deviceiat-pres'ent employed to release the bobbin is that operating on thev principle set forth-in patent to Lauzon No. 1,261,563. In that patentlprovision-ismade for keeping the bobbin support inopen position at all times except'when it is desiredto transfer a new bobbin, at which time'the supportis moved to bobbin supporting position to hold the bobbin properly under the transferrer arm. As the Vmagazine isreset with the lay on'front'center the-bobbin support is moved rearwardly or toits bobbin releasing position,'the-eifect of which is to drop a bobbin directly on the shuttle in the shuttlebox thereunder. v y

Such an operation occasionally results in the catching of the bobbin by some part of the lay with resultant breakage 'and it is an important part ofthe present invention to retain the general principle of the Lauzon patent' but del'ayfmovement of the bobbin support to releasing position'until the lay has reached its rearmost position after transfer.

The usual weft replenishing mechcanism for multicolor weft lreplenishing looms employs a bobbin support of the type shown in patent to Ryon No. 1,366,950 which incoporates the Lauzon principle and it is a more particular `object of my present invention 'several stacks.

Serial No. 283,977.

to add to the bobbin support-of the Ryon patent a member which will cooperate with the Lauzon setting stud, said part to be moved to its final position to effect movement ofthe support by the lay on its backward movement.

It is a still further obj ect of my present 4invention to provide means for moving the bobbin support actuating member to a position where it will clear the .lay as the latter moves back and forth in the loom.

Vith these and other objects in view which will appear as the description proceeds, my invention resides in the combination andarrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings, wherein a convenient embodiment of my invention vis set forth,

Fig. 1 is a side elevation of amulticolor weft replenishing mechanism having my invention applied thereto as seen from the interior of the loom,

. Fig. 2 is an enlarged view looking'in the direction of arrow 2, Fig. 1, y

Fig. 3 is aview similar to Fig. 2 but with certain parts removed to show more clearly the relation of the spring which operates the knuckle oint,

Fig. 4 is a detailed side elevation of a' portion of the replenishing mechanism showing the bobbin support as seen from 'a direction opposite that in which Fig. 1 is taken, the parts being in normal or bobbin releasing position,

Fig. 5 is a view similar to Fig. 4 but with the parts in bobbin supporting position, and F Fig. 6 is a horizontal section on line 6-6 of ig. 5. y

Referring particularly to Figs. 1, 2 and 3 the weft replenishing mechanism 10 is shown as having a plurality of vertical slides 11 which control the release of bobbinsfrom the The particular slide 11 which is to be called into action is vselected by the socalled color slide 12, a bell crank lever 13 positioning said color slide longitudinally relatively to the vertical slides 11. The lever is pivoted to av stand 14 secured to the rear of the magazine frame 10.

Pivotally connected as at 15 to the bracket 14 is a shuttle feeler carrier 16 to which is secured a pressed metal shuttle feeler 17 the office of which is to detect for the shuttle and revoke or prevent transfer should the shuttle be improperly boxed. The shuttle feeler carrier has securedl thereto a stud S which extends substantially parallel to the lay L.

The raising and lowering of the shuttle feeler 17 and its carrier is effected through a vertical rod 18 which is connected as vat 19 to the shuttle feeler carrier. The upper end of said rod 18 is connectedto an arm 20 secured to a rock shaft 21 to the forward end of which is secured an arm 22. A' rectangular block 23 is pivotally supported by the arm 22 andlextendsthrough a slot 24 formed in arm 2 5 of-lever 26 pivoted as at 27 to the upper end' ofy the frame 10'. A depending rod 28 secured-tothe lever 26 controls the translever together with the arm 22 definitely in i one of two positions. Under normal conditions said'v spring will operate to hold the parts asshown in Fig. 2 with adjustable stop screw"30l carried by Varm 25 in engagementwith affixed part of the frame 10 such as a lug31 which receivesfonevof the upper tie rods for the magazine. When the lever 26 is moved'in a counter-clockwise direction around stud 27from the position lshown in Fig. 2, a secondl stop screw 32 will engage the lug to limit movement of said lever and zii-m22 under influence of the spring29. In this way the spring operatesto hold the arm 20 and shaft 21 to which it is secured definitely in two different angular positions and it is in this way" that the position of the shuttle feeler' vcarrier V16 'and therefore the'stud 'S is determined.

Referring particularly to Figs. 4, 5 and 6 I have shown a particular method of supporting thelbobbin where it will be seen that a stand 4Q secured to the rear part of the weft replenishing lframe 10 carries afstnd 41 to which is pivoted a link 42 having set screw`43 therein- Said set screw acts on a pin 44 carried by thejupwardlyprojecting arm'45 of thebobbinsupporting member 46. The latteris piv'oted as at 47 to the lower end. of. a suspension arm 48,1nountedy on a fixed tiered 49ffor1ning'a part of the weftv replenishing mechanism., -As shown in Fig. 5, a torsion spring 50 surrounds theV tie rod 49 and has oneend thereof secured to the arm'48 and the other end secured to a collar 51 secured in adjusted angular position to the rod 49. he effect ofthe torsion spring is to move thearm'48forwardly or in a clockwise direc- Vtion .around tie rod. 49 as 'viewed lin Figs. 4

and 5. Stopv screw 52 engages a part of the frame. lOto limit movement of the suspension arm 48 to the left as viewed in Figs. 4 and 5 under action of spring 50. A lug 53 formed as part of arm 48 receives the upper end of a light tension spring 54 the lower end of which is connected to arm 45 to hold the pin 44 normally against screw 43. The magazine has a forward butt support 55 which cooperates with the arm 46 to support the head or butt of a bobbin in transfer position. As will appear hereinafter the spring 5() is weaker than spring 29. Y

The matter thus far described is substantially the sameas shown inthe previously mentioned patents and for a further description of the structure, and operation of the magazine reference may be hadto patent to RyonNo. 1,030,748.

As'previously stated it may happen that a bobbin will remain in the position shown in Fig. 5 after the time allotted for transfer due to an improper boxing of the shuttle and under these conditions it is essential that the bobbin be released. My present invention re-l vided with a notch which is defined byv a.

rearwardly and downwardly extending face 65 which intersects with a rearwardly and upwardly extending surface 66,said .notch being designatedherein at 67. I form the upwardly andrearwardly.extending surface 66 so that the upperportion thereof which terminates in the notch 67 is preferably nearer the axis of thestud 61 than is the lower portion thereof.` In other words the surface 66 is'preferably inclined toward the axis of the setting-lever. I do not wish to be limited strictly to this design of the notch, although I find it convenient.

f A light tension spring 68 is interposed between a portion vof the arm 45 as at 69 andthe setti-ngjlever and Vtends normally to `move the setting lever in a yleft'hand direction las viewed in Fig. 5. -Such'motion is limited by a stop 7 0 carried by the extension 60 andengaging a portion of the setting lever so as to hold the latter in the position shown in Fig. 5.

That portion of the stud S which lies under the Yforward end of the lsetting lever may be formed with an angular vor knife edge 71 as shown clearly in Figs. 4 and 5, said knife edge being designed to enter the notch 67.

Under normal conditions the parts are in the position shownin Fig. 4 with supporting arm 46 in rearward position and theshuttle feeler '17 in raised position, the stud S being in its highest position and located in the notch 67 When a transfer is about to takeV place the rod 18 will be depressed to'inove the afi stu'dS downwardly. V/TheLstop''Owvill operate to yprevent Athe arm64 of thersetting lever from following thelstud downwardly so that as the rod 18 descendsthe knife edge l'will be disengaged from the notch 67. As

soon'as stud S moves out of controllingl position with respect to 'thesettingvlever 62 the torsion spring will move the arm 48 and the bobbin support 46 to the left until 'such mi motion is arrested by stop screw y'52. The

support 46 will come to rest in such a positionthat the distance between'the same and the forward bobbin'suport is less than the diameter of the bobbin B. A'bobbin will then bereleased from one or another of the to restore the parts to the position shown in,

Fig. 2, thus lifting the stud'S to the position shown in Fig. I4 in full lines. By the previous movement of the support 46 to the left under inuence of the torsion spring 50 the setting lever 62 was moved over the stud S so that as the latter is raised it will engage the under side of arm 64 of the setting lever and move the same to the dotted line position shown in Fig. 5. This operation will take place whilethe lay is nearing front center on the pick when transfer should take place and the spring 29 will be of sufficient strength to hold the stud S in the dotted line position shown in Fig. 5. Theisetting lever-62 is therefore rocked about its axis to move the arm .68 thereof tothe low position indicated in dotted lines in Fig. 5.

Astheloom continues to operate the lay L will'move rearwardly or from the fullfline position shown in Fig. 5 to the right to carry bunter 72 into engagement with the ar`m 63 of the setting lever and move thelatter rearwardly. By reason of the fact that the spring 29 has a strongereifect than that of torsion spring 50 the latter will be strained and the stud S will be able to remain in vraised position with the arm 64 sliding across the top thereof. During ,the timethat vthe bunter 72 is in engagement with the lever 63 the support 46 will be movedto the right asviewed lin Fig. 'and will ultimately assume the position shown in Fig. 4, where it will be'spaced sufliciently from the Vforward bobbin support to release the bobbin. This condition takes place, it will be unedrstood,`when the lay is practically in its rearmost position so that the bobbin may be discharged without interfering with the lay.

During the backward movement of'the'setting lever the forward end of the varm 64 will ultimately pass over the knife edge 71, at which time the light spring 68 willfmove the setting lever in a counter-clockwise direction around'the Astud 6l until the knife edge is seated in the notch 67 or movement of the setting2 lever isarrested by the stop 70. This additional motion of the setting lever 62 under action of the tension spring 68 will move the arm 63 an additional amount, so that the same will be out of the path of the bunter 72 as the lay moves back and forth. By reason of the spring 68 and the surface 66. cooperating with the knife edge 7l I am therefore able to move the setting lever to a position `where it will clear the lay, the inclination of the surface 66 assisting the spring 68 in rocking the setting lever. The parts thus restored to normal position are rea'dy for the repeated indication which will be given due to the failure to transfer, should the previously indicated shuttle remain in action and again be presented under the magazine.

From the foregoing it will be seen that I have provided a simple setting lever which may be added to the form of bobbin support generally used, said setting leverbeing operated on the backward stroke of thelay to move the bobbin support to bobbin releasing position so that. an untransferred bobbin may be ejected from the magazine at a time when the lay rcannot engage the same to cause damage either to the magazine or the hobbin. It will further be seen'J that I have formed that portion ofthe setting lever which engages the stud S so as to retainthe parts in bobbin releasing position so long as the stud S remains raised after the first complete rearward movement of the lay following a revocation of transfer. It will also be seen that the light spring 68 together with the surface 66 operates to hold the setting lever out of engaging position with the bunter 72. While I have set forth the fact that the surface 66 is to be inclined slightly toward the axis of the stud 6l yet if the spring 68 be sufficiently strong I will not necessarily be held to this relation of the parts.

Having thus described my invention it wil i be seen that changes and modifications may be made thereiny by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is '1. Ina weft replenishing mechanism for looms, a lay, a pair of movable jointed bobbin supporting elements, means normally holding said elements in open bobbin releasing position, and a resetting device carried by one of the elements and moving therewithto beengaged and moved by the lay to move said elements to open bobbin releasing position.

2. In a weft replenishing mechanism for looms, a lay, a suspension arm movable about a fixed pivot, a movable bobbin engaging support pivoted to the arm, a resetting device pivoted to the suspension arm and positioned to engage'the lay' as the latter moves rear,

a bobbin releasing position.

3. In a weft replenishiiig mechanism for looms, a lay, a pair of movable bobbin supporting elements which are jointed together, one of saidy elements being movable about a fixed pivot, a resetting device carried by the latter element and movable Atherewith to a position to engage the lay to'cause the latter to move the elements to open bobbin releasing position as `the lay moves rearwardly.

I. In a weft replenishing mechanism for looms, a lay, a suspension arm movable about a fixed pivot, a bobbin support moving with yand ypivoted to the suspension arm, a setting device pivoted to the suspension arm, and means movable under control. of the replenishing mechanism and effective when in normal position to engage the resetting device to hold the bobbin support in open bobbin releasing position, said means when moved by the replenishing mechanism releasing the resetting device and the latter being engaged by the lay as the lay nears the end of its backward stroke to be moved rearwardly by the lay to carry the bobbin support rearwardly.

5. In a weft replenishing mechanism for looms, a lay, a suspension arm movable about a iiXed pivot, a bobbin support moving with and pivoted to the suspension arm, a setting device pivoted to the suspension arm, and means movable under control of the replenishing mechanism and effective when in normal position to engage the resetting device to hold the bobbin support in open bobbin releasing position, said means wheii moved by the replenishing mechanism releasing the resetting device and the latter being engagedby the lay as the lay nears the end of its backward stroke to be moved rearwardly by the lay to carry the bobbin support rearwardly,

said resetting device being moved by the lay into holding engagement with the means.

6. In a weftv replenishing mechanism for looms, a lay, a pair of movable pivoted elements one .of which moves about a fixed axis and the other of which has provision for engaging and supporting` a bobbin, a resetting device pivotally mounted to one of thek elements, and means under control of the replenishing mechanism normally engaging the resetting device normally to hold said elements in open bobbin releasing position, said means being movable by the replenishing mechanism to release the resetting device, whereby the elements are movable to bobbin supporting position, the lay on the backward stroke thereof engaging the resetting device to move the latter together with the elements rearwardly and to establish holding relation between the'resetting device and the means.

' 7. In a weft replenishing mechanism for looms, a lay, a suspension arm movable about alixed axis, a bobbin support pivoted to and moving with the suspension arm, a setting lever pivoted to the suspension arm, and a stud movable from normal to transfer position by the replenishing mechanism prior to the time of transfer', said stud when in normalV position engaging the setting lever to hold the latter together with the bobbinsupport in open bobbin releasing position, said stud when moved by the replenishing mechanism to transfer position to be disengaged from the setting lever, whereupon the latter together with the bobbin support is free to move to bobbin supporting position.

8. In a weft replenishing mechanism for looms, a lay, a suspension arm movable about a fixed axis, a bobbin support pivoted to and moving with the suspension arm, a setting lever pivoted to the suspension arm, and a stud movable from normal to transfer position by the replenishing mechanism prior to the time of transfer, said stud when in normal position engaging the setting lever to hold the latter together with the bobbin support in open bobbin releasing position, said studV gether with the bobbin support vis free tov move to bobbin supporting positiomsaid stud when being returned to normal position engaging the setting lever to vmove the same into the path ofthe lay, the lay to engage the setting lever as said lay nears the limit of its rearward movement to move the bobbin support to open bobbin .releasingposition and to eifect holding engagement between the setting lever and the stud.

9. In a weft replenishing mechanism for looms, a lay, a pair of movable bobbin supporting elements pivotally connected together, one of said elements movable about afixed axis and the other of said elements having lmeans forv supporting a bobbin, a setting device pivoted to one of the elements, means movable from Anormal to transferv position by the replenishing mechanism, said means normally lengaging the setting device to hold the latter out of the path vof the lay, said means when being moved from transfer back to normal position engaging the setting device to move the same inte the path of the lay, whereupon the latter in its rearward stroke engages the setting device to move the bobbin supporting element to open bobbin releasing'` position and at the same time effect holding engagement between the means and the setting device.

10. In a weft replenishing mechanism for looms, a lay, a suspension arm, a bobbin support pivoted to and moving with the suspension arm, a setting lever pivoted to the sus pension arm, means defining a notch in said setting lever, astud movable vby the replenishing mechanism from normal to transfer position, said stud normally being located in the notch to hold the setting lever together with the bobb-in support in open bobbin releasing position, said stud when moving from normal to transfer posit-ion being disengaged from the setting lever, whereupon the setting lever together with the supporting arm and bobbin support are free to move to bobbin supporting position, and said stud when being returned to normal position from transfer position moving the setting lever into the path of the lay, whereupon the latter at the end of its rearward stroke will engage said settin lever to move the same together with the bobbin support rearwardly and simultaneously effect return of the stud into the notch in the setting lever.

In testimony whereof I have hereunto afg xed my signature.

AUGUSTIN J. CHEVRETTE.

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