US1760969A - Thread clearer for looms - Google Patents

Description

June 3, 1930. R. G. TURNER ,7

THREAD CLEARER FOR LOOMS F iled Nov. 22, 1928 [l /Mam YZ/Mer Patented June 3, 1930 f I NU ES RAT N O F CE? MASSACHUSETTS RICHARD G. TURNER, OF woRoEsTER, rtAssACHUsETTSQAssIGNoR To CRoMrToN a KNOWLES LOOM WoEKs; 0E woRCEsTER, A SACHUSETTS, A CoRroRAT'ro 0Ev THREAD CLEARER EoR LOOMS Application med November 2 2, 1928; Serial No. 321,208. l

w This invention relates to improvements in thread clearers for looms and it'is the generalobject of the invention to provide ayieldable device of this type which will prevent breakage.

In the type of clearer tion relates there is a notched bar located under the lay and positioned to engage the trailing weft end from notched bar extends behind the downward pathof the ejected bobbin when the lay is on front 'center. The picker stick on certain types of looms where a clearer is desirable moves substantially along the longitudinal axis of they shuttle, so that should the picker stick fail to assume its proper upward position upon 'a forward beat of the loom it will strikethe clearer and cause breakage.

As a result ofcontlnued transfers there accumulates on the bar a ma-s'sof weftfends wvhich must bewithdrawn from time to time.

With the loom running and the bar in its normal position an element of risk is'involved in removing these waste ends unless the bar can be moved to a position of safety. It is accordingly a further object of my present invention to providethe bar with a yielding support which will permit the same to be movedforwardly out of the path of the lay and picker waste ends It alsohappens'that while the loom is in operation.

occasionally a bobbin will be so disposed during a forward'stroke of .the lay as to engage the thread clearer and unless the latter is yieldable breakage either of the clearer or bobbin will result.

A more detailed ob ect of my invention re lates to the manner of. mounting the clearer. Multicolor magazines or weft'vreplenishing mechanisms are customarily made with a pair of substantially parallel plates between which the bobbins lie. These plates are held together by tie rods and it is a more"partic u lar object of my present invention to employ one of these tie rods-as .a means for support ing the thread clearerto the end thatthe clearer and magazine may be assembled ,as a unit. A

will appear as the description proceeds, my

to which inventhe ejected bobbin. The

stick to permit clearing of the through which invention. and may prior patent to Ryon No.1,030,7 18.

' I i screw 31 as shown .in With these and other objects in view which inventionresides in the combination and 211 rangement of parts heremafter described and.

setv forth in the claims; I

In the accompanying drawings wherei-n' a convenient embodiment of my invention is set forth,

applied thereto,

Fig. 2 1s atop plan view looking down wacrl'dlyin the direction of arrows 2 in Fig. 1, an

3 of Fig. 1.

Fig. 1 is an end elevation of a weft ta, plenishing mechanism having my inventionj Fig. 3 is a detailed vertical section online of't-ie rods oneof which is illustrated at 1221s projecting beyond the magazine M. "Said extends between the outer plate 13 and tie rod theinner plate 14; and may beheld in position by screws one of which is shown at 15. Bobbins not. shown move downwardly in the magazine and are moved toward transfer po sition by mechanism not set forth herein but well understood.

The lay L is mountedon swords one of which is shown at longitudinal vertically extended slots 17 ejected nates an "appreciable 'distance below the ung.

den face of the lay.

The matter thus'far described is of common construction, forming no part of my present 2 be made asset forth' in I vMy invention relates particularly tol the thread clearer and in carrying my nvention into effect I providea' holder 30 which isheld to'the aforesaid tiejrodf12 by means. of a Figs. 1 and'3. Said extension 32 into holder has a depending 33. Thelatter'rod which is extended a'rod 16 and is provided with a I an exhausted bobbin may be f from the shuttle S. A'bobbin chute; I 18 is'secured to the lay and has a forwardly" and downwardly inclined surface 19 serving. to deflect the ejected bobbin forwardly into' A a bobbin can not the latter in a normally fixed position. A notched horizontal arm 38 forms part ofthe cl'e'aringelement and is proportioned to extend under the lay and into the space between the latter and the upper end of the-surface lt).

The arm 38 is similar in purpose and general construction to the notchedbar shown in Marcoux Patent No. 766,151 and. when the lay isin the forward position shown. in Fig. 1 the arm lies behind the slot 17 so that an ejected bobbin will. pass in front of said notched bar- In operation at the time of transfer the ejectedbobbin will-move downwardly so that thetrailing endowhich extends through the eye of the shuttle will lie in front of the arm 38. As the lay recedes one or another ofthe notchesin the arm 38 will engage the Weft end WV of the expelled bobbin E; and Withdraw. the same from the shuttle. This operation of the device is substantially the same as in the aforesaid Marconi; patent.

The spring is sufiiciently strong to hold the bar 38 in. proper position for all normal operations of the loom, adjustment of, the arm in a. vertical direction being accomplished by adjusting the rod 33 in the extension 32 and adjustmentofthe said arm in a horizontal direction being accomplished'by moving the holder 30. angularly with respect to the tie rod 12.

Should the picker stick indicated at Pin Fig.v 1 be improperly placed on a forwardbeat ofthe lay so as to engage the arm 30 the latterwill move forwardly due to the resilience ofthe spring 35; It willflbe observed that the said arm..38 need not necessarilymove about the tievrod as a pivot inasmuchas the spring 35 will permitfthe arm 38 to movev in any direction from. its normal position. This is due partly to-the fact that the thread clearer 37 has a rearwardly ex: tending arm 40. In like manner if'the attendant desires to clear an accumulation of waste from the arm 38-hemay do so by pulling said end forwardly and holding the portion v 40 with one hand while removing the obj ectionable-waste with the other hand, this operation taking place while the 100m is in operation and being accomplished of course bya deflection of the spring 35.

From the. foregoing it will be seen that I have provided a simple resilient mounting for aweft end clearer which will permit the latter to move forwardly when engaged by a misplaced picker stickor bobbin. It will also be seenthat said clearer may be moved forwardly at will for the purposes of removing waste while the loom is in operation, the spring acting to return the clearer to normal position. It will also be seen that the device is mounted on one of the tie rods of the magazine and for this reason can be made as a part of the magazine. It will further be seen that the adjustments previously described permit the location of the notched arm 38 in the correct nositionwithrespect to the lay and the bobbin chute.

Having thus describedmy invention it will be seen that changes and modifications may be made therein 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. In a thread clearer for a loom having'a lay with a slot therein for the passage of an ejectedbobbin, a fixed support, a notched bar to lie under and behind the slot in the lay when the latter is in its forward transferring position, and a yielding connection between the support and the notched bar whereby the latter may move forwardly from its normal position, said connection constituting the sole means of support for the notched bar and holding the latter in normal position.

2. In a threadclearer for a loom having a lay with a slot therein for the passage of an ejected bobbin, a fixed support, a notched bar to lie under and behind the slot in the lay when the latter is in its foremost position, and a coil spring operatively connected to the notched bar, said support and notched bar being connected together by means of the spring on y,

3. In a thread clearer fora loom having a lay with a slot therein for the passage of an eject-ed bobbin, a fixed support comprising a cylindrical member, a notched bar to lie under and behind the slot in the lay when the latter is in forward position, a cylindrical element operatively connected to the notched bar, and a coil spring fitted over and frictionally engaging the cylindrical member and the cylindrical element and holding the notched bar yieldingly in normal position.

' 41111 a thread clearer for a loom having a lay with a slot therein for the passage of an ejected bobbin, a fixed support, a notched bar moves, a notched bar located behind and below the slot when the lay is in forward positlon, a fixed support,anda yielding connecforward position, a

' tion between the fixed support and the notched bar comprising a coil spring which is the sole connectionbetween the fixed support and the notched bar.

6. In a loom having a lay with a bobbin slot 7 therein, a weft replenishing magazine, a tie rod forming part of the magazine, a normally fixed support angularly and longitudinally adjustable on the tie rod, a notched bar to ex tend behind and below the slot in the lay When the latter is in forward position, and a yield- 1 ing connection between the notched bar and the support on the tie rod, said connection constituting the sole means of support for the notched bar and holding the latter in normal position. I V r 7. In a weft replenishing mechanism for a loom having a lay provided with a slot therein through which an ejected bobbin may pass, a tie rod forming part of the replenishing mechanism, a holder extending downwardly from and angularly adjustable with respect to the tie rod, a coil spring supported by the holder, and a notched rodlocated behind and below the slot in the lay when the latter is in forward position, said spring comprising the sole connectionbetween the holder and the notched bar and yielding to permit the latter to move forwardly. V

I8. In a weft replenishing mechanism having a lay provided with aslot for an ejected v bobbin, a tie rod forming part of the replenishing mechanism, a depending carrier sup-,

ported by and angularly adjustable with respect to the carrier, a vertical coil spring having the upper end frictionally heldon the holder by the resilience of said spring, and a notched bar located behind and below the slot 1 in the lay when the latter is in forward position, the lower end of said spring being oper-' atively connected to the notched bar.

9. In a weft replenishing mechanism having a lay provided with a slot for an ejected bobbin, a tie rod forming part of the replenishing mechanism, a depending carrier supported by and angularly adjustable with respect to the carrier, a vertical coil spring having the upper end frictionally held on the holder by the resilience of said spring, and a notched bar located behind and below the slot in the lay when the latter is in forward posi- I tion, the lower end of said spring being operatively connected to the notched bar by having friction contact with said notched bar due to the resilience of the spring.

In testimony whereof I have hereunto affixed my signature.

RICHARD Gr. TURNER.

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