US1738198A - Side-slipping weft detector - Google Patents

Description

Dec. 3, 1929. Q v, PAYNE 1,738,198

SIDE SLIPPING WEFT DETECTOR Filed June 21, 1927 juulllllllllllllllHIIIMIIIINNIIIUIII lil g liti lill

Patented Dec. 3, 1929 UNITED STATES PATENT OFFICE @SCAR V. PAYNE, 0F. WORCESTER, MASSACHUSETTS, ASSIGNOB T0 C IROIVIIPTN t KNOWLES LOOM WORKS, WORCESTER, MASSACHUSETTS, A CORPORATION F MASSACHUSETTS SIDE-SLTPIPING WEET DETECTOR Application filed. June 21,

This invention relates to improvements in so-called side slip weft detectors for looms and it is the principal object ofthe invention to simplify the construction of feelers of should take place such as stopping or re plenishment of weft. The first detector ofl this kind of which I have knowledge isb that shown in patent to Sameck No. 718,529 isn sued Jan. 13, 1903. rThis patent shows a spring pressed slide on which is pivotally mounted a detector element with a' toothed yarn engaging surface offset from the pivot of the detected element so that when the detector is struck by the surface being detected the latter tends to move the detector about its pivot. 1With the Sameck construction a second and relatively light spring is necessaryto return the detecting element to normal position after a swingingor angular movement about the pivot incident to detection of weft exhaustion.` lt is an important object of my present invention to employ the general construction shown in the Sameck patent but to restore the moving detector parts to normal position by a single resilient y element acting directly on the detector.

When detectors are employed with multicolor weft replenishing mechanisms they are ordinarily located on Athe magazine side of the loom and must therefore be withdrawn fromy the path of the incoming bobbin at the time of transfer. It is a further'object of my i invention to provide a sliding support for the detector which shall have a portion eX- tending in the path of the transfer mechanisni so that said detector may be moved to aposition of safety when the shuttle is being replenished.

Multicolor weft replenishing mechanisms ordinarily employ a vertically moving floating actuator lever which usually cooperates with a controller pin normally in the path of the actuator lever. When such a con- 1927. Serial No. 200,481.

struction is applied to a dobby loom' it is` found that false indications may result when the loom is being turned over by hand due .to the fact that the controller pin is normally 1n a position to interrupt the downward movement of the actuator lever. lt is a still further object of my present invention to pro-- vide a controller for the floating actuator lever which is normally out of the path of said lever, said controller being moved under the lever at the time of indication of weft exhaustion. The movement ofthe controller may conveniently be effected by the angular movement of the detector member.

With these and other objects in view which `will appear as the description proceeds, my

invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

ln the accompanying drawingswherein a convenient form of the invention is shown,

Fig. 1 is a top plan view of a detector made according to my present invention showing the same in contact with a sufficient. supply of weft and moved forwardly without givingv indication of weft exhaustion,`

Fig-2 is a side elevation looking in the directionof arrow ,2, Fig. l, parts lacing shown in section,

' Fig. 3 is a vertical section on line 3--8 of Fig. 1 showing the parts inl non-indicating position in full lines and ind indicating position in dotted lines,

4 is a view similar to Fig. 1 but with the detector moved along a denuded loobbin to indicate weft exhaustion,

Fig. 5 is a detail front elevation taken in the direction of arrow 5; Fig. l',

Fig. 6 is a detail'vertical section Online 6-6 of Fig. 2,

Fig. 7 is a side elevation of the detector ed a feeler stand 1() having a horizontally disposed platformll and having also an upstanding horn 12 provided with a slot 13 in which is located one end of a iioating aetuator lever 14. Said lever is moved downwardly on each detecting beat of the loom when the lay is in extreme forward position and if uninterrupted permits continued operation of the loom without change but 1f interrupted will initiate replenishment, as shown in patent to Ryon No. 1,030,748. The

platform may have a slot l5 for a purpose to be described.

In carrying my improvements into 'effect I provide a fixed feeler casing having a lower bed portion 20 and a cap 21. Said bed and cap are provided with aligning slots indicated at 22 in Fig. 1 to receive a bolt 23 which also extends through slot 15 by means of which the casing is held in proper angular position on the platform 11. The bed is provided with a groove 24 running preferably the whole length of the bed and extendin rearwardly toward the lay of the loom an said bed is further provided with a longitudinal pocket 25 which lies parallel to the roove 24. The bed has a small rib 26 at the orward end of pocket 25 and may also have another rib 27 at the rear end ofthe pocket, although this rear rib is not essential. A partition 2 8 extends between the groove and pocket and serves to separate parts of the detector to be described hereinafter. The upper forward surface of the bed has a relatively large bearing surface 29 and'preferably though not necessarily a smaller bearing surface 30 at the same level. A portion of the partition 28 may also be in the same horizontal plane asthe surfaces 29 and 30. The rear part of the upper surface of the bed surrounding the groove and pocket may be at a lower level than surfaces 29 and 30, as at 31.

A detector supporting and guiding carrier 32 is slidably mountedin the groove 24 and has the forward end thereof bent upwardly as at 33 to extend into the path of an arm 34 formed on the transferrer lever 35. The purpose of this construction is to move the slide 32 forwardly whenever the transferrer arm has a transferring movement.

The detector 40 is formed preferably of a single pieceof sheet metal having the rear end thereof notched as at 41 and having the intermediate portion thereof provided with an arm 42 the forward side of which has a lug 43 lying at one side of a pivot stud 44 extending upwardly from the carrier slide 32. Said stud 44 forms the pivot about which detector 40 swings and movement of the latter in a counter-clockwise direction is limited by stop in'45 carried by the slide 32 (to engage tail 46 of the detector 40.

The cap 21 has a pocket 47 which lies over the pocket 25 of the bed 20 and ribs 48 and 49 at the front and rear, respectively, of the cap define the ends of the pocket 47. Said cap has bearing portions 50 which rest on the corresponding bearing 29 on the bed and has an aperture 51, see Fig. 7, through which the detector extends, said aperture lying above the lowered surface 31. The 'cap is further provided with a tongue 52, see Fig. 6, which enters the rear end of groove 24 to cooperate with bolt 23 to hold the cap and bed in fixed'relation. The ca J may also have adownwardly facing flat earing 53 to lie close to the top of the detector and prevent the sameirom moving upwardly off the pivot stud 44. Upbent end 33 of the slide carrier engages the forward end of the cap alnd thus limits rearward movement of said s ide.

The means for holding the slide carrier and detector in rear position is shown herein as a compression spring 54 lying in the space defined by the pockets 25 and 47. The forward end of the spring bears against one or both of ribs 26 and 48, while the rear end pushes directly against the detector and is held in position by the lug 43. The pockets confine the spring and require the same to exert its pressure against the detector.

The indicating means includes a weighted lever 60 pivoted as at 61 to a depending arm 62 formed on the stand 10. Said indicating lever has an upwardly extending controller 63 which, as shown in Fig. .3, is normally held out of the path of the lever 14 by weighted arm 64. Said controller 63 lies normally in position to be acted upon by the indicating tail 46 of the detector and that edge of said tail adjacent the arm 63 is parallel to the direction in which the slide 32 moves so that back and forth movement of the detector will not disturb the indicating lever 60 on non-indicating detecting beats of the loom.

In operation the advancing supply of weft B in shuttle S will engage the detector and if sufiicient yarn be present the detector will move forwardly as indicated in Fig. 1, conipressing spring 54 and leaving the indicating lever 60 in the position shown in full lines in Fig. 3. As the lay reeedes the spring will expand and push the detector rearwardly but inasmuch as the detector is limted in its movement relatively to the slide 32 by pin 45 said slide carrier will also be moved rearwardly by the spring. Uien the supply of weft is exhausted, however, the detector will move to the angular position indicated' in Fig. 4 because of the fact that the yarn engaging portion 41 of the detector is offset from the pivot stud 44, and the spring pushes on the detector between the pivot of the latter and the yarn engaging part of the detector. Under these conditions the slide carrier 32 remains at rest, being held in this position by the spring 54. As said detector swings on its pivot along thc denuded bobbin the tail 46 will move the indicating lever from the full to the dotted line position shown in Fig. 8, thus interrupting the downward movement of the actuator lever lll. On the subsequent transferring beat of the loom the arm 34 will engage the upright portion 33 of the slide 32 to move thel 8. This latter construction may also be used on weft replenishing looms, the extended end 33 serving under such conditions merely to withdraw the feeler.

From the foregoing it will be seen that I have provided a weft detector wherein the yarn engaging part and the sliding support are both controlled by a single resilient element. It will further be seen that -the'sliding carrier not only affords pivotal mounting for the detector but also limits angular movement thereof in one direction and that the upright portion 33 of the slide engages the cap to limit rearward movement of said slide, said upright portion being bendable ifdesired to afford slight adjustment of the rear location of the detector. It will further be seen that the forwardly extending tail of the detector is normally spaced from the rocking controller as set forth in Figs. l and 2, the purpose of this construction being to permit -a slight side movement of the detector without causing vibration of the controller. Furthermore, the tongue on the cap enters the groove for the sliding carrier and thus assists in aligning the cap and bed. Also, the rear upper surface of the bed islower than the top of the sliding carrier and the bottom of the'detector, the purpose of this construction being to avoid the precise machining operations which would be necessary if the detector had to rest on the bed as well as the carrier. Said sliding carrier also is provided with a portion lying in the` path of some part of the transfer mechanism whereby the detector may be moved out of the path of the incoming supply of weft at the time of transfer. It will also be seen that the base and cap are provided Awith grooves which define a retaining space for the resilient element. lVhile I have described the slide as the support for the detector and prefer to use the slide in this connection vet an important function of said slide is to guide the'detector in its movements toward and from the lay. stock and is therefore substantial but at the same time is found to be sufficiently light to The detector made of fiat.

operate successfully on very fine yarn such as rayon and raw silk.

A further advantage of my present invention is that adjustment of the feeler as a whole toward and from the surface being detected can be made without a corresponding adjustment of the controller for the actuating lever. This` is because of the fact that the tail of the detector normally moves forwardly in the line of the adjustment on non- 1 indicating detecting beats of the loom and is brought about by the fact that the tail moves to actuate the controller in al direction substantially parallel to the surface being detected and at right angles to the normal forward movement of the supporting sliding carrier.

Having thus described my invention it will be apparent that changes and modifications -ma-y be made therein by those skilled in the are 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:

l. In a side slipping weft detector for looms, a stationary support, a sliding carrier movable toward and fromthe front of the loom in said support, a detector pivotally mounted on the sliding carrier and supported thereby, said detector having a yarn engaging portion offset from 'the said carrier to move along and in contact with a substantially exhausted supply of weft to give indication of weft exhaustion, and a single resilient element interposed between a por- '.tion of the fixed stand and the detector, said 2. In a side slipping weft detector forlooms, a fixed stand, a sliding carrier movable toward and from the front of the loom in said stand, a side slipping weft detector pivotally connected to the carrier and having a yarn engaging surfacev offset from the pivotal connection with the carrier and capable at exhaustion of weft to move along the exhausted supply in the direction of the length of the surface being detected away from the pivotal connection, a single resilient element interposed between the fixed stand and the detector and exerting a force on the latter tending to move the same about the pivotal connection between said detector and sliding carrier, and means to limit relative angular movement between the detector and the carrier both the detector and carrier being moved rearwardly due solely to the action of the resilient element. I

3. In a side slipping weft detector for looms, a'fixed stand, a sliding carrier movllG able in said stand toward and from' the front of the loom, a weft detector pivotally mounted on the sliding carrier and having a yarnpengaging detecting surface offset from its ivot in the direction of the length of the sur ace to be detected, and a single resilient detector and carrier positioning member acting between a part of the fixed support and a portion of the weft detector and exerting yielding pressure on said detector at a point between the yarn engaging detecting surface and the pivotal' connection between the detector and carrier with respect to the length of the surface to be detected, the carrier and detector moving rearwardly after a non-indicating detecting movement un-der the sle action of the resilient means and said resilient means also moving said detector angularly With respect to the carrier to normal position after indicating movement.

4. In a side slipping weft detector for looms, a fixed stand, a sliding carrier movably mounted in said stand to move toward and from the surface to be detected, a weft detector pivotally mounted on the sliding carrier and having a detecting surface offset from the .pivotal connection with the carrier in the direction of the length of the surface to be detected, stop means to limitV angular' movement between the detector and carrier in one direction, and a single carrier and detector moving element to act on the detector at a point between the detecting surface thereof and the ivotal connection between the detector auf-the carrier and tending to hold the detector against said stop means to position the detector for engagement with the surface to be detected, said single carrier and detector returning-element applying prcssure to the detector at a point intermediate the detecting surface and the pivot of the detector with respect to the length of the surface to be detected, both .the detector and carrier being moved rearwardly due solely to the action of the resilient ele- 5. Ih a side slipping weft detectoro for looms, a fixed stand, a sliding carrier movable in the stand toward and from the sur- "face to Vbe detected, a side slipping weft' detector pivotally mounted on the sliding carlrier said detector slidin at exhaustion of weft in a direction away from pivotal mounting f the detector, a stop on the carrier to enga-ge thedetector-and limit angular movement thereof with respect to the carrier in one direction, means to limit movementof @the carrier toward thesurface to be detected,

6. In a sidev slipping weft detector for looms, a fixed stand having a spring receiving pocket located entirely in the stand, a sliding carrier movable in the fixed stand toward and from the surface to be detected and having a portion to engage the fixed stand' to limit movement of said carrier toward the surface to be detected, a weft detector pivotally mounted on the carrier and having a detecting surface offset from thc pivotal connection with the carrier in the direction of the length of the surface to be detected, a'stop on the carrier to engage and limit angular movement of the detector, and a compression spring confined in the pocket in the fixed stand, the forward end of said spring bearing against the fixed stand and the rear end of said spring bearing directly against the detector at a point intermediate the detecting surface thereof and the pivotal connection between the detector and carrier with respect to the length of the surface being detected, said spring yieldingly holding the detector againstthe stop and the carrier in rearposition.

7. In a side slipping weft detector for looms,a fixed stand, a carrier member slidably mounted in the fixed stand toward and from the surface to be detected, a detector member pivotally mounted on the Carrier member and having a detecting surface offset from the pivot thereof in the direction of the length of the surface to be detected, a stop on one of said members to engage the other to limit relative angular movement of said members in one direction, and a single resilient device exerting yielding pressure against the detector member at a point intermediate the detecting surface and the pivotal connection between the members, the members being held in normal angular position and the carrier member being held yieldingly toward the surface to be detected solely by the action of the single resilient device.

8. In a side slipping weft detector for looms, a fixed stand having a pocket therein extending toward and from kthe surface to be detected, a carrier slideably mounted on the stand toward and from the surface to be detected, a weft dector pivotally mounted on the carrier, and a compression spring located in the pocket and confined thereby and exerting rearward yielding pressure against the detector at one side of the pivotal connection between the detector and carrier to hold said detector and carrier in rearward position and to restore said detector to normal position after an indicating movement.

9. In a side slipping weft detector for looms, a fixed stand having a pocket formed entirely therein extending toward and from the surface to be detected, a carrier slidably mounted in the stand and extending substantially parallel to the pocket, a weft detector pivotally mounted on the carrier and having a detecting surface offset from the pivotal connection in the direction of the length of the surface to be detected, and a compression spring located in the pocket and exerting yielding pressure against the detector at a point intermediate the detecting surface and the pivotal connection between the-detector and carrier with respect to the length of the surface to be detected, said spring holding the carrier yieldingly toward the surface to be detected and also acting to move the detector to normal position after an indicating movement.

10. In a side slipping weft detector for looms, a xed stand comprising a bed and a cap, the bed and cap each having pockets extending toward the surface to be detected and said pockets aligning to define a substantially closed chamber, a carrier extending substantially parallel to the chamber and slideably mounted on said stand toward and from the surface to be detected, a weft detector pivotally mounted on the carrier and having a portion extending across the chamber, and a compression spring located in and confined by the chamber and exerting pressure against that portion of the detector extending across the chamber to hold said detector and carrier yieldingly in rear position and to restore said detector to normal position after an indicating movement.

11. ln a side slipping weft detector for looms, a fixed bed having a groove therein substantially perpendicular to the surface being detected, a carrier member slideably mounted in the groove to move toward and from the surface to be detected, a side slipping weft detector pivotally mounted on the sliding member and having an offset yarn engaging surface, a fixed cap having a tongue to enter the groove and position the cap with respect to the bed, and single resilient means interposed between the cap and bed and engaging a detector to exert pressure on the same tending to hold' the slide and detector yieldingly toward the surface to be detected.

12. ln a side slipping weft detector for looms, a fixed support, a carrier member mounted on the support for sliding movement with respect thereto toward and from the surface to be detected, a weft detector pivotally mounted on the slide and having a yarn engaging portion offset with respect to the pivotal connection, a single resilient means engaging the detector and holding said detector and carrier yieldingly in rearward position toward the surface to be detected, and transfer mechanism, a portion of said Carrier member being extending into the path of the transfer mechanism whereby said transfer mechanism is effected to move the carrier member and the detector forwardly on a transferring beat of the loom against the action of the single resilient member.

13. In a side slipping' weft detector for a tionary support, a carrier slidable with respect to the support in a direction toward and from the surface to be detected, a side slipping detector element pivoted to the carrier and having a yarn engaging detecting surface offset from the point of -pivotal connection with the carrier in the direction of the length of the surface to be detected, and a single re silient'member interposed between the support and the detector and acting to move the carrier toward the surface to be detected after a non-indicating detecting beat of the loom, said detector being movable pivotally with respect to the carrier against the action of the resilient member, the latter acting to move the detector angul'arly relatively to the carrier to restore said detector to normal position after a detecting angular movement.

14. In a side slipping weft detector for a loom having a surface to be detected, a stationary support, a carrier slidable with respect to the support in a direction toward and from the surface to be detected, a weft detector pivotally mountedpn the carrier, and a single resilient element to restore said carrier and detector to normal rearward position after non-detecting and also indicating detecting beats of the loom, said resilient element being operatively connected to the detector and being operatively connected at a relatively fixed point, said resilient element tending throughout the entire forward movement of the carrier to effect angular Inovement of the detector relatively to the carrier on indicating beats of the loom, said resilient element being the sole means for restoring the carier and detector to normal position.

15. In a side slipping weft detector for a loom having a surface tofbe detected, axed support, a carrier slidable in a direction toward and from the surface to be detected and relatively to the support, a detector pivotally mounted to the carrier and having a yarn engaging surface offset in a direction of the length of the surface to be detected with respect to the pivotal connection between the detector and carrier, and a single resilient element constituting the sole means to restore the lcarrier and detector to normal position after both non-indicating and also indicating detecting beats of the loom, said resilient element being interposed between the detector and the support andrhaving an increasing tendency to resist angular movement of the detector relatively to the carrier during the forward movement of the carrier on a nondetectable beat of the loom. p

16. In a loom, an actuator to effect a change in the operation of the loom, a detector stand, a controller for said actuator pivotally mounted on said stand and having its free upper end movable away from said stand in a direction substantially parallel to the surface being detected and toward said actuator, a

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i. sliding carrier movable on said stand in a. path adjacent said controllery and toward and from the surface being detected, a side slip weft detector pivoted to the sliding carrier and having a yarn-engaging portion olset from the pivotal connection of said detector- With the carrier and in the direction of the length of the surface being detected, said detector having a portion receiving a component 10 of movement in a direction substantially parallel to the surface being detected when said detector has a movement indicating substantial weft exhaustion, said portion thereby directly engaging said controller and moving the same about its pivot on said stand into operative relation with respect to ghe actuator.

. 17. In a loom, an actuator to elect a change in the operation of the loom, a detector stand,

a controller for said actuator pivotallyT mounted on said stand and haviligits free upper end movable away from said stand in `a direction substantially parallel to the surface being detected and toward said actuator,

.a counterweight ei'ective to hold said controller normally free from said actuator, a slidingf carrier movable on said,stand in a path adj acent said controller and tovvard and from the surface being detected, a side slip weft detector pivoted to the sliding carrier and having a yarn-engaging portion movable in the direction of the length of the surface being detected, said detector having al portion directly engaging said controller nd'moving the same about its pivot on said stand into operative relation with respect to the actuator.

In testimony whereof I` have hereunto affixed my signature.

l OSCAR V. PAYNE. 40

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