US1831944A - Loom - Google Patents

Description

7, Y E. BLOOM LO OM Filed March 22. 1930 INMENTOR, .EdWaTdZZboh-z,

' f ATTORNEY Patented Nov, 17, 1931 EDWARD ia'mo'm, or rA'rEiisoN', new JERSEY lpplication filed March 22, 15530: serial ms. 4881061.

This invention relates to beating-up mechanisms for looms of the type in which the reed is rearwardly yieldable on the lay part- A 1y to prevent a smash when the beatingll up occurs with the shuttle not fully boxed and partly to avoid irregularities in the cloth due to too severe impact of the reed with the fell of the cloth. I utilize spring-including means to resist this rearward yielding and this means is so characterized that when the lay is back greater resistance is opposed than when the lay is forward and the reed abuts the cloth, whereby in the first case, which is when the shuttle is travelling across the lay, the reed will act properly as a guide for the shuttle; but various circumstances, according as one or another type of weave or one or another grade of warp or filling is present, require that the resistance acting to oppose yielding of the reed to the cloth be not fixed or invariable, wherefore an important feature of my invention is that said means shall have its tension adjustable.

Ordinarily, this adjustment of the tension of said means to suit the particular cloth being woven will not appreciably affect the tension when the lay is back'and said means is serving to hold the reed up to its Work of guiding the shuttle. But for instances where this might occur I provide the system with means to change the ratio of the two resistances of said means, to wit, when the lay is forward and when it is back.

The drawings show the invention,

In Fig. 1 when the la is back and the shuttle is performing its ight; and

I11 Fig. 2 when the lay is forward.

1 is the loom frame and 2 the lay carried by the lay-swords 3 and movable therewith from the one to the other of the two positions shown. 4 is the shuttle. 5 is the reed pivoted, as at 6, to the lay so that it may swing back from its forward stop, afforded on the lay at 6a. (The reed is here taken as including the reed proper 5a and the frame 5?) in which, as usual, it is mounted).

To one of the lay swords is pivoted to move in a vertical plane a detent 7 in the form of a lever having a forwardly extending arm to abut the back of the reed and a rearward arm longitudinally slotted at 8. On the loom frame is swivelled an abutment 9 which forms supporting means-for a spring hereinafter mentioned and also a guide in which is slidable aro'cl 1O pivoted to a bolt l1- adjustable in the slot 8 of therearward arm of the detent, and this rod, with an abutment thereon formed by a nut 12 screwed: and hence adjustable on the rod? and secured: by a lock-nut 13, form what I term a thrust member. Betwe'en these two abutments a compression spring 1 st, penetratedby the rod, is arranged,it,being of such length that at either limit of motion-1 of the lay it acts through the rod-,tohold the detent pressing against the reed and hence thelatter (normally) pressing; against stop ea.

'VVhen the lay is backthe spring isunder maximum tension, and the detent then keeps the reed up to its work of supporting and hence properly guiding the shuttle in its flight then'occurring. When the lay is for Ward the spring remainsstill active through the detent-to; maintain the reed forward against: stop 6a but with less pressure, so

that thereedif need'he may yield to the cloth tea-void productionzof the mentioned irregu-laritiesltherein. The force of the spring is variable-by adjusting the nut 12. V

In some cases. it may as indicated'be that if the force ofthe spring is changed so as to suit the particular cloth: being woven itfwill not be proper for insuring proper guidance of the; shuttle when the lay is back. Hence I preferably provide the mechanism with means for varying the ratio of such pressures at will. In the example, therefore, a second spring.l-'5,aconnects hooks (or equivalent) 16 and 17. on' the reed and the frame, the latter hook-having screwed thereon a' nut .18 by which is supported and by which the tension of the spring may: beavaried. The nut 12 having been adj usted to produce the necessary pressure of the detent on there'ed when the lay is back, if. the; pressure of spring 14 is'then too heavy or toolight, when the lay moves forward, to suit the demands of the cloth (always bearing in mind that the inertia of the reed as the lay stops its forward beat is a" factor at this time) the adjustment of the tension of spring 15 may be resorted to to correct this condition.

Having thus fully described my invention what I claim is:

1. A beating-up mechanism for looms comprising a lay movable forwardly and backwardly, a rearwardly yielding reed on the lay and spring-including means to oppose to the reed greater resistance against rearward. displacement when the lay is back than when the lay is forward, said reed being normally urged forwardly by said means when the lay is forward and the reed abuts the cloth but otherwise free at that time to yield backwardly.

2. A beating-up mechanism for looms comprising a lay movable forwardly and backwardly, a rearwardly yielding reed on the lay, and adjustable-tension spring-including means to oppose to the reed greater resistance against rearward displacement when the'lay is back than when the lay is forward, said reed being otherwise free to yield backwardly when the lay is forward and the reed abuts the cloth.

3. A beating-up mechanism for looms comprising a lay movable forwardly and backwardly, a rearward yielding reed on the lay, a lever fulcrumed on the lay and engaged with and movable by the reed on yielding of the latter, and adjustable-tension springincluding means to oppose to the lever greater resistance against movement by the reed when the lay is back than when the lay is forward.

4. A beating-up mechanism for'looms comprising a lay movable forwardly and backwardly, a suporting means with reference when the lay moves back, said mechanism having means to change the ratio of such resistances.

7. A beating up mechanism for looms comprising a forward and backward moving lay, a rearwardly yielding reed on the lay, and means to oppose rearward yielding of the reed and exerting less resistance to such yielding when the lay moves forward than when thelay moves back, said mechanism having spring-including means to change the ratio of such resistance.

' In testimony whereof I aflix my signature.

' i EDlVAR-D BLOOM.

to which the lay is so movable, reciprocatory means on the lay comprising a rearwardly yielding reed and a thrust member guided by the supporting means, and a spring operatively lHlZGI'POSGO. oetween said means and opposing movement of the reciprocatory means in the direction corresponding to that in which the reed is yieldable.

5. A beating-up mechanism for looms comprising a lay movable forwardly and backwardly, a supporting means with reference to which the lay is so movable, reciprocatory means on the lay comprising a rearwardly yielding reed and a thrust member guided by the supporting means, and a spring operatively interposed between said means and opposing movement of the reciprocatory means in the direction corresponding to that in which the reed is yieldable, one of said means having means to vary the tension of the spring. I

' 6. A beatingup mechanism for looms comprising a forward and backward moving lay, a rearwardly yielding reed on the lay, and

-means to oppose rearward yielding of the reed and exerting less resistance to such yielding when the lay moves forward than Ill)

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