US1998306A - Movable reed mechanism - Google Patents

Description

April 16, 1935. c. D. BROWN 1,998,396

MOVABLE REED MECHANISM Filed NOV. 6, 1934 2 Sheets-Sheet l INVENTOR.

W/ T/Vf SJ, CAEL 0. 560w.

CL/NTO/VJ Goa/EN, I BY ATTORNEY W/T/VESS.

C4 //Y To/v J7 CosuE/V.

- c. D. BROWN L9983 5 MOVABLE REED MECHANI SM 2 Sheets'Sheet 2 Filed Nov. 6, 1934 INVENTOR. CAEL [7. BROWN.

ATTORNEY.

Patented Apr. 16, 1935 a 1 UNITED STATES PATENT OFFICE I 1,998,306 i 7 I I MOVABLE-REED MECHANISM. I

Carl D. Brown, Hopedale,=-Mass.',- assignonto' I Draper Corporation; Hopdale, Mass., a cor I poration'of Maine I v ApplicationiNovember 6, 1934, SerialNo; 751,737

o Claims. (o1. 139-188) I The-present invention pertainsto fly shuttle the movement of the reed being controlled looms, and more partioularly'to the reed holding through-a fiiter which bears directly against the and controlling instrumentalities of such looms.- IOWGT'l'Gfid'llb. A shaft extends lengthwise or There exists in the prior'art a reed mechanism, the lay therebeneathand is positively held from" commonly called-loose reed mechanism, wherein oscillatingduring the time the lay isat front 5 the reed is positively locked to the lay during. center and during the time the shuttle is northe time the shuttle isnormally in flight but" is mally iii-flight. The fliter is supported 'irom'f released at a predetermined point in each forthe shaft by connections which per'mit the-fli- Ward beat of the lay to allow thereedto yield ter, and reed, to yield slightly even whenf'the' 10 rearwardly ii the shuttle becomes trapped in shaftis locked. This slight yielding is opposed 10 the shed; Such. reedmechanisms are usually by'strcngspring meansand is preferably limited found on. automatic-shuttle changinglooms.- The to the amount reasonably necessary to provide reed ismovable by every light pressure from a the-yielding reed function above'mentioneds trapped shuttle at the so-called protection point, The positive stop means for the oscillatablel and the reed must be more firmly held during shaft ireezthe shaft at a predetermined point 15 the beating in of the filling. The holding of the in each-forward beat of the lay, thereby allowing reed when the lay is at front center is usuallyac the shaft, connections, filter and reed to" move" 3 complished by a positive locking means. the; comparatively great distance necessary to A further Well known type of reed mechanism accommodate-a trapped shuttle I is the yielding reed mechanism (sometimes er- Thesaid preferred embodiment isillustrated 0 roneously called loose reed mechanism). Such in detail on-the accompanying drawings, of

reed mechanism is constructed to providetor-whichr v I a limited rearward yielding of the reed when Fig. l is aperspective View, partly in sectioiu the lay is at front center The yielding of the from the back of the lay;

reed compensates for variationsin thediameter I Fig; 2 is-asectionalelevation showinga trapped, 25

of successive picks of filling thread, tendstopreshuttle; and I I I I I r vent thick and thin-places, and otherwise im- 1 Fig. 3 is a' view similar to Fig. 2 but showing-the proves the appearance of the cloth. 4 Such mecha parts (in-normal operative positi0n.- I I i nismsare usually found on non-automatic looms The loom which I have selected asbest-illusandbobbin changing looms particularly 'adapte'div tratingan adaptation of thepresent invention 30 forweaving-silk,iartificial silk or very:finecotincludes'many parts ormechanisms which are b0 1,, old-and well-known in the art. Accordingly,

The loose reediand yielding'r'ee'd mechanisms of manysuch parts and mechanisms are not illus the prior, art have not! beenv combiriedQinQohe trated ongthe drawings, while others are showrr loomwand, so far asl amaware, prior-to. the as exa ples 0f constructions -Whichmaybe- 5 presentv invention. therehasbeen vnosinglereed utilized. I I I I I mechanism specifically adapted to both loose reed 'Theloom, as shown, includes right'and left andyielding reedsfunctionsl 7 hand loom sides I and}, -respectively,-which" It "is, accordingly, anobject .of .the presentinare connected by cross-members including breast I 40 vention to providea reed controlling mechanism. beam --3 at-thefront of --theloom. The loom -is---40 for movable Treeds, whichmechanism'shall'procontrolled throu h a-S pP n e- Wh ch is videvfor a slight. yieldingfof the reedatitheitime movable-for operating controll-ing'rods such as of beat-up and shallalsoprovide for positively and- E. Iheshipper handle" ispulled toward limiting'such rearward movement duringthej thefront-of the loom, as'in Fig.3, when in runtime the, shuttle is normally infiight-and'fo'r hing position and is moved rearwardly, as in I releasing the reed atfa predetermined point to Fig-. .2,to.stopthe loom. -A rod 'L'slidably mount permit-the, reed .to move rearwardly" a co'rridOn;-the-l00m-irame, may bemoved-forwardlyparatively'greaterfdistance if, at such time, the by devices hereinafter described,- such-forward shuttleistrapped inthe shed. l I movement serving to stop the loom inthe man- 50,. Other objects will be hereinafter morespecifi ner more fully disclosed in patent, to -Lindsjo, 0

"cally jenumerated, or] will-become apparent as. et al., No, l,850,30i6,'granted March 22, 1932.

theidescriptionproceeds. I I f Alay t ismountedon layswordss,-9-- fo 'I'hepreferred embodimentof the invention, ciprocation .toward and from -theiront of-the' whichis. herein disclosed, includesa reedwhich I 100111 in the usual manner; it reed w is mounted i 55,1,is' pivotallm-mounted to pivot about'its" upperrib}, on tne a p as. mmrmauy move therewitlilbutl-fifi v to be capable of rearward movement thereon at certain times. The particular reed shown is thus movable by virtue of the fact that its upper rib l I is loosely mounted in a groove in the hand rail 12 whereby the reed can pivot rearwardly about the rib H. The reed is held forwardly against the lay by a suitable member such as fliter l3 which is controlled as hereinafter described.

A shuttle I4 is picked along the lay and lays filling in the shed formed of warp W, the filling being laid in front of the reed and beaten in by the latter, all in the usual manner; The reed is capable of a rearward yielding movement atthe time of beat-up (that is, when the lay is at front center and the filling being beaten into the cloth) such yielding serving tocompensate for irregularities in thickness or spacing of the filling. j

A rock shaft 15 extends widthwise of the loom beneath the lay. This shaft is mounted sov as to be capable of oscillation at times but at other times is positively locked. The rock shaft is so locked at the time of beat-up by means of arms 18, I6 fixed thereto which arms engage beneath fixed stops I1, I! on the loom sides. Yieldable means support the fliter 13 from the rock shaft. 'As shown, arms l8, I8 are fixed to the rock shaft and extend upwardly and rearwardly end fixed with respect to the shaft and the other end fixed to a bracket 20. The springs thus yieldingly oppose rearward movement of the reed at the time of beat-up. The rearward movement of which the reed is capable at this time is limited by cooperating stop shoulders on the arms l8 and brackets 20, as is clearly shown in Fig. 1.

The manner in which the parts just described operate to fulfill the function of a yielding reed will be apparent. It may be noted, however, that the arms ,I 8, l8 are adjustably secured to the shaft l5 and that adjustment of the arms about the shaft serves to adjust the distance between the limiting stop shoulders on the arms and brackets. The arms can be adjusted so as to entirely close the distance between the stop shoulders, this preventing the yielding of the reed at the time of beat-up.

As the lay moves rearwardly, an arm 22, which may be integral with the right hand arm 16, engages in a notch in stop lever 23. This lever is pivoted to the loom frame at 24, guided by a rod 25, and pulled forward toward a limiting shoulder 26 by a spring 21. The lever is set to be engaged by the arm 22 when the lay is about half way back on its rearward movement, which is about the time the shuttle is picked. The arm moves away from the lever at a predetermined point in the forward movement of the lay, such point being the point in the loom cycle where the shuttle is supposed to have completed its flight.

Thus, the shaft I5 is positively locked during the time the shuttle is normally in flight, such locking of the shaft serving tolock the reed against moving rearwardly more than the limited amount above mentioned.

When the shaft [5 is released from control of lever 23, as just described, the reed is capable of moving rearwardly a comparatively greater amount to prevent damage to the warp if the shuttle becomes trapped in the shed as in Fig. 2. However, the shaft, fiiter and reed should not at this time be entirely uncontrolled. There is accordingly provided an arm, link 28 and spring 29 comprising a toggle for yieldingly opposing rearward movement of the reed. The spring 29 may be very light compared to the springs 2|. This toggle device is more fully disclosed in prior patent to Lindsjo, No. 1,956,075, granted April 24, 1934. r

In the specific embodiment above described, the yieldable means supporting the fliter member for limited rearward yielding at the time of beatup is, in turn, bodily supported by the second yieldable means which permits the comparatively greater yielding of the fliter when the shuttle becomes trapped. In the specific embodiment above described, the locking means for the second yieldable means is inoperative to lock the reed against its limited rearward yielding at the time of beat-up and is also inoperative to prevent such limited yielding when the shuttle is in flight.

I find that in some looms, such as shuttle change looms for instance, the susceptibility of the reed to a slight rearward movement while the shuttle is in flight is not objectionable if such movement is positively limited to a comparatively small amount.

It will be noted that since the invention as hereinafter claimed consists of a mechanism adapted to both the yielding reed and loose reed functions, the invention is not limited to the specific mechanism which is herein disclosed.

Having fully disclosed the preferred embodiment of the invention, I claim:

1. In a fly shuttle loom, a reciprocating lay, a shuttle, a reed mounted on the lay for rearward movement relative thereto at the time of beat-up, means yieldingly opposing said rearward movement of said reed at the time of beat-up to thereby compensate for irregularities in the filling, and means positively limiting said rearward movement during the time the shuttle is normally in flight, said last named meansreleasing said reed at a predetermined point in each forward beat of the lay to thereby permit the reed to be moved rearwardly by a trapped shuttle.

2. In a fly shuttle loom, a reciprocating lay, a shuttle, a reed mounted on the lay to yield rearwardly a limited amount at the time of beat-up and to yield a comparatively greater amount when the shuttle becomes trapped, and means operative to prevent the reed from yielding said comparatively greater amount during the time the shuttle is normally in flight, said means'being released at a predetermined point in each forward beat of the lay to thereby allow the reed to yield said comparatively greater amount when the shuttle becomes trapped.

3. In a fly shuttle loom, a reciprocating lay, a shuttle, a reed'mounted on the lay to yield rearwardly a limited amount at the time of beat-up and to yield a comparatively greater amount when the shuttle becomes trapped, and positive locking means for locking said reed against yielding said comparatively greater amount during the time the shuttle is normally in flight, said means being supporting said member for rearward yielding of the member and reed at the time of'beat-up,

means supporting said first named means for comparatively greater rearward yielding of said member and reed when said shuttle becomes trapped, and locking means cooperating with said second named means to lock said member and reed against said comparatively greater rearward yielding during the time the shuttle is normally in flight.

5. In a fly shuttle loom, a reciprocating lay, a shuttle, a reed mounted on the lay for rearward movement relative thereto, a fliter for controlling said reed, yieldable means supporting said fliter for limited rearward yielding of the fliter and reed at the time of beat-up, a second yieldable means supporting said first named means to permit comparatively greater rearward yielding of said fliter and reed when said shuttle becomes trapped, positive locking means for locking said second means against yielding during the time the shuttle is normally in flight and at the time of beat-up, said locking means being released at a predetermined point in each forward beat of the lay.

6. In a fly shuttle loom, a reciprocating lay, a shuttle, a reed mounted on the lay for rearward movement relative thereto, a fliter for controlling said reed, yieldable means supporting said fliter for limited rearward yielding of the fliter and reed at the time of beat-up, an oscillatable member on the lay supporting said yieldable means and fliter, spring means opposing oscillation of said member, and positive locking means for locking said member against oscillation at the time of beat-up and during the time the shuttle is normally in flight, said locking means being released at a predetermined point in said forward beat of the lay.

'7. In a fly shuttle loom, a reciprocating lay, a shuttle, a reed mounted on the lay for rearward movement relative thereto, a rock shaft mounted on the lay, a fliter for controlling said reed, means carried by said rock shaft for supporting said fliter for limited rearward yielding relative to the rock shaft, said rock shaft being ,oscillatable to permit a comparatively greater rearward yielding of said fliter when the shuttle becomes trapped, and means positively locking said rock shaft against oscillation during the time the shuttle is normally in flight.

8. In a fly shuttle loom, a reciprocating lay, a shuttle, a reed mounted on the lay for rearward movement relative thereto, an oscillatable rook shaft on the lay, a fliter for controlling said reed, a plurality of arms secured to said rock shaft, means on said arms for yieldingly sup porting said fliter for limited rearward movement of the latter and the reed at the time of beat-up, means operative as thelay moves rearwardly to positively lock said rock shaft against oscillation, said means releasing said rock shaft as the lay moves forwardly, and additional means for positively looking said rock shaft against oscillation at the time of beat-up.

9. In a fly shuttle loom, a reciprocating lay, shuttle, a reed mounted on the lay for'rearward movement relative thereto, means yieldingly opposing said rearward movement, positive stop means for limiting said rearward movement of the reed at the time of beat-up and during the time the shuttle is normally in flight, said stop means releasing said reed at a predetermined point in each forward beat of the lay for further rearward movement of the reed by a trapped shuttle, and an adjustable stop capable of being adjusted to entirely prevent rearward movement of said reed at the time of beat-up.

10. In a fly shuttle loom, a reciprocating lay, a shuttle, a reed mounted on the lay for rearward movement relative thereto, a fliter for controlling said reed, an oscillatable rook shaft on the lay, means carried by said rock shaft for yieldingly supporting said fliter; means for locking said rock shaft against oscillation at the time of beat-up and during the time the shuttle is normally in flight, said locking means releasing said rock shaft ata predetermined point in each forward beat of the lay, and adjustable stop means capable of being adjusted to entirely prevent rearward movement of said reed at the time of beat-up.

CARL D. BROWN.

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