US1530778A - Take-up mechanism for looms - Google Patents

Description

March 24. 1925.

lA. LECOMTE TAKE-UP MECHANISM FOR II JOOMS Filed Nov. 19, 1925 2 Sheets-Sheet 1 A TTf/VE Y A. LECOMTE TAK-E-UP MECHANISM FOR LOOMS Filed Nv- 19, 192:5 2 sheets-sheet 2 nga* ATTORNEY Patented Mar. 24, 1925.

asians UNITED STATES PA'rsaVrV oFFicE.

ALPHONSE LECOMTE, or swansna, MASSACHUSETTS, Assienon To DRAPER conF l PORATION, OF HOPEDALE, VIASSCHUSETTS, A CORPORATION 0F lVlIAlIllE.Y

TAKE-Ur Meenemen. ron, Looms.`

Application filed November v19, 1923. Serial No. (r3/5,584.

To all whom t may concern: Y

Be it known that I, ALPHONSE Lucci/ITE, a citizen of the United States, and resident of Swansea, in the county of Bristol and State of Massachusetts, have invented an Improvement win Take-Up Mechanisms for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts,

This invention relates to [take-up mechanisms forvlooms by `which the clothis taken up and wound upon a warp beam or roll as it is woven. The warp threads extend from the let-ofi mechanism to the take-up roll and the threads are let -off by the letoft mechanism as the cloth is woven. It is now the general practice to lead the woven` cloth over a take-up roll andato operatethis roll at such a rate that as the cloth is woven the f fell of thevclothwill be presented to the reed to cause the filling or weftthread i tobe properly beaten up. The take-up roll is given its rotative movement from a train of mechanism driven from an actuator connected with a rotating part of lthe loom.

lt sometimesv happens that the take-up action or pull of thetake-up roll on-the cloth becomes excessive due to various causes, such as the cloth becoming wrapped Varound `the takeaip roll, or tucked under the part of the cloth leading over the roll.

lhen this happens, regardless of the primary cause of the excessive or abnormal opposition to vthe rotation of the take-up roll,

undue strain is. developed in the take-up mechanism, and if thetake-up roll continues to operate, injury either to the cloth, lthe warpthreadsV or the take-up mechanism may result. Y c

In accordance with the present invention, when the take-up roll or transmission mechanism is subjected to an excessive strain thatr would be likely. to injure either the cloth, thewarp threads, or the transmission mechanism, the take-up action of the takeup rollis"suspended while the loom continues in operation. l y In the drawings: f j -Fig. 1 is a perspective view showing one form of takeup-mechanism employing the present invention;

Fig. 2 is an enlarged side view withparts in section of gears aving cooperating projections'in gripping engagement;

Fig. Fig. 1;

Fig. a is a view similar to that of Fig.` 2, but showing the cooperating projections out of gripping engagement;

Fig. 5 is a perspective view of one of the cooperating gears; and

Fig. 6 is a perspective view of the other cooperating gear. i

The loom frame comprises the usual side frames 1 connected by cross-pieces 2 for supporting the working parts of the loom. The take-up roll 3 is shown as a rough surface land this roll is supported upon a shaft 5, the ends of which are journaled is a side view of parts shown in in bearings supported at the sides of the loom'frame.' .The cloth a passes over/the and this is accomplished by providing a gear 9 to engage the rack portion 10 of each slide, and the gear9 isnormally urged in a directioirto force theslide 8 upwardly by a coiled spring 11 which is coiled about and serves to rotate a shaft upon which the gearV 9 is mounted; In this` manner the cloth rollo is yieldingly held against the taker-up roll fS and yields downwardly to accommodate the increase inthe size of this roll. This constructiomvhowever, is well known, and forms nopart of the present invention.

In accordance with the present inven- "tion, theV take-up mechanism for'rotating the take-up roll 3 is operated by an ac-V tuator,. and between ythe actuator and the take-up roll is provided a train of mechanism. including a give-way device which operates automatically to interrupt the transmission of power to the take-.up

roll when the latter encounters dangerous opposition to its rotation.

rlhe actuatorin the construction shown comprises a gear 12 on a shaft 13 journaled in suitable bearings, and the shaft 13 is driven from a shaft 14 by a worm 1.5 and gear 16. 'The shaft .ltiin turn is drivenv by bevelled gears from `a shaft-17; v

/45 shoivninv Fig. et:

In the construction shown the actuator 12 meshesV with a gear lS'ivhich is rotatably supported upon a side of the loom -fra-me by the-shaft- 19, and the gear 13 is provided i with a long,pinion 2O rigidly secured thereto.V Above the shaft 19 is provided a gear 21 rotatably mounted upon a shaltl 22'and the gear 21 meshes With anddrives the gear 23 secured to the take-up' roll shaft 5. ReL l erring to Fig. 3 it will be noted that-*the gear 21 does not mesh with the pinion 2O but4 movement is imparted from the `gear`20 to .a drivengear v24; rotatablyv mounted upon a shaft 25; and upon the shaft is also 1'5 mounted the driving# gear 2G which meshes with and drives thek gear 21.

In order that. the taleeup" roll 3 mayv stop rotating' when too greaty atension-is placed A upon the cloth a., a give-Way device' is pro- '30" vided', and in the embodiment of the inven tion'zill'ustrated this is. accomplished by providingjinterengaging projections upon the gears 24 and' 26, asv bestshownA in Figs. 5 and 6. These projections, designated by 27 35 andi28, havev inclined edges, as best shoivn in Figs; 2and L1, whichA tend to torce thev gears apartas the porver'imparted 'from one gear Vto the other-increases', and the gear 24" is normally urged towards the gear26 by a 30"coiled spring 29. One end of this spring is seated. Within an 1 annular' groove" formed in afface ottlie'igear 24, While the :opposite end oflthis. spring'A abuts against' a' Washer; 30 mounted upon'. the shaft- 25 and' secured i thereuponl'iyfajl ootterx pinf31.V The tension ofthe springjQQ'is such-that it'willfnormally hold:V thev gear 211- iir driving engagement Withthe gear 26,1as'shoW-n infFi'g. 2, andthe parts Willpremain in this relation through-V 40 out'1 the norma-l operationv oie the loom, but it,

Y `for any" reason, therotation of the vtalle-up roll* is abnormally obstructed, the cooper-V ating'projectlons 27 and".1 28 will' move ont of driving engagement1'with4 each other, as v Since-the pinion 20 is made relatively long, the` gear'24 may be slid lengthwise ofthe shaft'Av 25 `Without beco-mingfdisengagcd ronrthe pinion 20.-

The sha-tt 25 preferably is ysupported by 'M50 the cha-nge gear= support*- Whler'ebyr the shavtt-25"1nayb'e-moved angularly relative to the slraiit19"byswingingfthe su-pportf32 to. the.- desired position of' adjustment; and Y then tighteninig'up1the*clampnut2 33, and 552" the sha-ft 25v may be"4 moved towards-l and from-the gearE 21by moving the-same to different positions of adj ustnien-t:v Within the slot 3eformed in a downwardly' exten-ding armr35 of the supportvl 32.

From the foregoing description when read iny connection with. the"drawings;it.v will be seen that lthe' give-Way; device off the-present inventionl may. be. readily; applied.' to

loomsfnow .in-insee.,as@thenl shaft -25 Vprovided 95 with the gears-'2412` andf-26 andimeansfor impartingimovement ioin one to: the other may oe` easily secured" to the change gear support" 32 in placerofthe ordinary change gears heretooreV used" in the ch'ainA of' gears employed to impartrotary movement to the talreeup roll from an actuator 12. t will be understoodthat theV actuator may be of Vany usual type, and that the actuator continues in operation' during the continued weaving operation of theloom, even vthough the take-up roll A isv permitted tok stop by. the give-Way device:

That is p claimed is 1. In atake-up mechanismorlooms, the u combination olii a driven-cloth take-up' roll `80 miei-"Which the olotlipassesandbyV which the clotlris taken upasrvoven, a clotliivindingroll'to which the clothis delivered as it is drawn lrontward by the" take-up roll, an actuator, a trainofmechanism between the-actuatorand takeeuproll for causing tlie'takeeup roll totalreup the cloth' asY it is 4Woven and: including 'an elongatedv trans missiongear Which' is'constantly4 driven; a driven gearconstantly engaging therewith; '90 shalt on Which it i's-y mounted" for movement longitudinally f thereof, zu driving gear also on said shaft, interlocking projections between" the driven and driving gearssh'ai f inginc-lined cooperating Walls, andfa'springy 95 actingoir one` o-i saidgearsl to `holdfthe 'projections normally interloclledl and yield'able to automatically' release thierV projections when' rotation othe'ta'lreeup' ,rolly isl abnor mally obstructed.`

2. fn a taleup n'iechanism-''orlooms,- the combination othy a?" clothl taire-upfrolll'v over which the clothpassesY and by'-,Wlii'clr,the cloth"r` istalcen lup` as Woven,-

actuation7 a traink o-fmechanism moan-todi at one sideot 105 theloonfrb'etrveen-k tlre'lialrc-up roll and actuator, including afshaft; a transmitting gear and? a f giif'eervay gear mounted orrthe shaft, inte-rengagingjproj eotions on -v the gears having incl-inedfportionsyyielding meanslnofr-k mallyjaetingto hold'theprojections in Io-perative' engagement and yieldablewto permit antonin-tiodisengagementv of' the projections by' an almormal increase'distralin exerted Sby the cloth, and a constantly driven-elongatedi gear the teeth" of Which are enga-ged by the givevnrYr v gear4` in its dillie'rent positions yalong lthe sha-tt on whichitismounted 3.- Inatakeeup mechanism for" looms, the combinationof a clotlr take-up roll over'lZO which the' cloth passes and* by which the cloth :istalierr up as `Woven',l aftrainf of meclranism between the take-'up' roll .and'fan'operating shaft of. the ,loon'iffrr rotating the take-up roll to "tale up the cloth as'- it is 125 Woveir and includingVY a* constantly actuated elongated gear, a driven' gearin constant "engagementV Withthe' elongated igear, A ard-riving gear, a..'shatf-frrpon"which both" offy the gears are ino-u'ntnd.,A interlockingnieansvbe V130 tweensaid gears, a spring acting on one of said gears to hold the gears normally interlocked and yieldable to permit relative rotation between the gears when rotation of the take-up roll is abnormally obstructed, andmeans for supporting said shaft in diterent positionsfof angular adjustment to permit the introduction of different sized gears thereupon.

4. In a take-up mechanism for looms, the combination of a take-up roll over which the cloth passes as it is woven, a cloth winding roll to which the cloth .is delivered by the take-up roll, an actuator, a train of mechanism mounted at the side of the loom and between the take-up roll and actuator, includinga transmitting gear and a concentrically mounted give-way gear, a constantly driven elongated gearV meshing' with Vthe give-way gear, interengagng projections on the transmission and give-way gears, a spring normally acting to hold the projections in operativeengagement and yieldable to permit automatic disengagement of the projections between the two gears by an abnormally increased strain exerted by the cloth on the take-up roll. 5. In a take-up mechanism for looms, th combination of a driven takeaip roll, a cloth 'beam to which the cloth is delivered by the two last named gears, a spring normally acting on the driven gear to maintain the projections in Vdriving engagement, said pro jections having inclined portions for automatically causing movement of lthe driven gear along the shaft against the springV pressure by thek opposition to rotation exertedv on the driving gear through undue strain upon the cloth. In testimony whereof, I have signed my name to this soecification.

LPHONSE LECOMTE.

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