US1257706A - Take-up mechanism for looms. - Google Patents

Description

H. HEDLEH. mam? MECHANISM Fon Looms.

APPLICATION ElLED JAN. 18. l9l6- Pmenmd Feb, 26,-' 191@ 3 SHEETS-SHEET Fig@ llllil A @Hmmm HQJIHEDLER.. TAKE-Ul? MECHANISNI FOR LOONISY. APPLICATION FILED IAN. Is. 1916.

Paten Mb., 26,1918.

3 SHEEFShSHEET E.

Henry d. @dien H. HEDLER.

TAKE-UP MECHANISNI FOR LOOMS.

APPLICATION HLED JAN.18.1916. MQQVP 3 SHEETS-SHEET 3.

Patented Feb 26, 1918 l 1m "TI L hummm and HENRY J'. HEDLER, OF TAFT-SVILLE, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO DRAPER CORPORATION, 0F HOPEDALE, MASSACHUSETTS, A CORPO- RATION y0F MAINE.

TAKE-UP MECHANISM FOR Looms.

Specification of Letters Patent.

Patented Feb. 21B, 191e..

Appli-cation filed January 18, 1916. Serial N o. 72,834.

ment in Take-Up Mechanism for Looms, of which the following description, 1n connec-` tion with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to looms and more particularly to that type of loom provided with mechanism for automatically replenishing the weft or filling upon the breakage or exhaustion partial or complete thereof.

The invention has for its object to provide mechanism for so controlling the takeup mechanism as to secure at predetermined intervals and for predetermined periods the weaving of transverse compact masses or stripes of weft to give a striped effect `to the finished fabric. This effect may be associated with longitudinal stripes produced by controlling the warp in a well-known and familiar manner so as to give both a longitudinal and transverse striped effect in the finished fabric and produce goodssueh as dimity cheeks or cross-barred muslin.

In itspreferred form the invention presents mechanism controlled automatically Vby means adiunctive to the shed-forming mechanism of the loom such for example as the dobby mechanism of the dobby type of loom for stopping or delaying the action of the take-up mechanism for predetermined 'periods during predetermined sheds. Mechanism is also presented for locking the take up mechanism against retrograde movement during these periods and in the case of automatic weft replenishing looms without disturbing the usual mechanism for permitting let back upon the occurrence of weft replenishment.

These and other objects of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the appended claims.

The drawings illustrate so much of an automatic weft reple-nishing loom provided with a. dobby mechanism as is necessary to an understanding of the invention in its preferred form, lalthough it will be understood that the invention in its broader aspects is not restricted to the particular mechanism for forming the shed, nor to the provision of automatic weft replenishing mechanism.

In the drawings,

Figure l is a front elevation of an ordinary type of dobby mechanism for controli` ling the formation of the shed with a connection thereto involved in a preferred form of the invention, this figure beingI shown for convenience on a smaller scale than the remaining figures;

Fig. 2 is a side elevation of the forward portion of a loom frame together with the mechanism forming a preferred embodiment of the invention;

Fig. 3 is a'front elevation of the construction shown in Fig. 2;

Fig. 4 is a detail partially in horizontal cross section of a shaft, sleeve and connected parts shown at the bottom of Figs. 2 and 3.

F ig. 5 is a top plan of the main portions of the general features of construction of the weft replenishing mechanism.

The' present invention is not dependent upon a particular' construction of loom, but in order to disclose a practical and preferred form of the invention it has been illustrated in connection with an automatic weft replenishing loom of the Northrop type. This particular construction of loom except for the features involved in the disclosure of the present invention is substantially the same as illustrated in thc patent to Rhoades No. 913,915 granted March 2, 1909, and its predecessor the patent to Emery No. 648,903, granted May 1, 1900. Preferably also the present invention is embodied in a loom in which the shed forming mechanism is of the dobby type and the dobby mechanism herein illustrated as an example of this. type of toom is substantially that disclosed in the patent to Littlefield No. 618,362 granted January 24, 1899. Reference may be made to these several patents for a more fu l disclosure of the mcchatiism illustrated and in connection with wliich the present invention is shown as embodied in a preferred form.

The warps pass through heddles carried by the heddle frames l, and after being interwoven with the filling or weft about the sand roll 2 and the iinished cloth 3 is wound up upon the usual take-up roll 4. When a longitudinal striped effect is desired as in mechanism as to have vthe weaving of such fabrics as dimity checks trolling the take-up mechanism to produce the desired transverse striped effect by stopping orxdelaying the action of the take-up mechanism for predetermined periods during predetermined sheds. The shed forming mechanism illustrated as one and a preferred type of mechanism for forming the shed is of the dobby type, and as shown in the aforesaid patent to Littleeld comprises a series of harness levers 5 pivotally mounted on the loomv frame from Which flexible connectors 6 pass over idler rolls 7 to the harness frames 1. In this invention one of theseharness levers 5 is utilized to control the take-up mechanism and for that purpose its HeXiblev connector 8 extends to an arm 9, to be described.

The mechanism by which the harness 4 levers 5 are operated and controlled formlng 1n its specific construction no part of the present invention need not be further described, and will be fully understood by reference to the before mentioned patent to Littleiield. 1

In the construction illustrated the take-up roll2 is provided with a gear 10 which during the beginning of the Weaving of the fabric intermeshes with a pinion 11 on the cloth roll 4 to secure the rotation of the latter until theroll of cloth is of sufficient diameter to be readily driven by frictional engagement With the Sand roll.

The shaft l2 of the take up roll is provded With a gear 13 intermeshing with a gear 14 which in turn intermeshes With a pinion 15. This pinion 15 is attached to and rotates with a gear, 16 which in turn intermeshes with a pinion 17 mounted on a shaft carrying the large gear 18. The gear 18 intermeshes with a pinion 19 carried by a sleeve loosely mounted on the shaft 20 and this sleeve is also provided with an attached or integral ratchet 21.

The shaft 20 is providedwith a Worm Wheel 22 driven by a Worm 23 on a shaft 24 constantly rotated in the usual manner by suitable connections to the driven shaft of thefloom. Vhen the sleeve carrying the gear 19 and ratchet 21 is clutched to the shaft 20 the take up mechanism is given a end ofthe carries with it the pawl 35 until positive and continuous motion thus holding the take up roll against the strain of the warp and preventing any slip back While the take up mechanism is in action. The mechanism illustrated for clutching and unclutching the sleeve and the shaft '20 comprises a sleeve member 25 keyed to the shaft 20 and provided with clutch teeth adapted to engage coperating clutch teeth on the opposing end of the sleeve carrying the gear 19 and ratchet 21. This sleeve member 25 is normally forced toward the other sleeve by a helical vspring 26 and the unclutching action is effected by a forked lever arm 27 in engagement Wit/h a shoulder 28 on the sleeve 25.

This invention is preferably associated With and is herein shown as embodied in a loom of the automatic weft replenishing type. In such a loom it is desirable and customary when weft replenishment occurs that the action of the take up mechanism shall be stopped, and further that a predetermined amount of let back shall take place in order to prevent the formation of thin places in the cloth.

In that construction of this type of automatic weft replenishing loom herein illustrated upon the failure or exhaustion partial or complete of the weft, the controller shaft 28 is rocked vthrou-fh the agency of suitable weft detecting Dmechanism well known and familiar and unnecessary here t0 describe. An arm 29 mounted on the controller shaft 28 carries a downwardly projecting link 30 and is provided at its lower end With a slot 31 riding over a pin 32 carried by an arm 33 integral with or connected to the forked arm 27, and pivotally mounted at 34. Upon the call for filling replenishment the controller shaft 28 rocks depressing the link 30 and through the mechanism described moves the clutch sleeve member 25 to the left (Fig. 3) disconnecting the take up mechanism from its driving mechanism. The let back of the take up roll is governed by a pawl 35 the tooth of which rests upon the ratchet 21 and a slot 36 in the forward end of which rides upon a pin 37 rigid with the loom frame. The effective length of the slot 36 is determined by a cross pin 38 inserted in one of the holes 39 in the forward pawl. During the normal operation of the loom the tooth of the pawl 35 rides over the ratchet 21. But upon the call for'weft replenishment and consequent release of the take up mechanism from its driving mechanism the ratchet 2l reverses its rotation under the strain of the Warp and l the cross pin 38 contacts lwith the pin 37, thus securing a predetermined amount of let back according to the position of the cross pin 38, and thereupon the take up mechanism is locked.

In looms of this general typeprovision is customarily made for stopping the open ation of the loom when required and for this purpose a shaft 40 at the bottom of the loom is provided with an arm 41 engaging the usual shipper 42 so that upon the rocking,` of the shaft 40 as through the action of theusualwarp stop motion the shipper is released to stop the loom. This shaft 40 is conveniently made use of in connection with a preferred embodiment of the present invention.

A sleeve 43 is loosely mounted on the shaft 40 and at one end has secured thereto as by set screw 44 the arm 9 already described, -and which by means of the flexible connector 8 is connected to an element of the shed forming mechanism, such, for example, as the harness lever 5. At its opposite end the sleeve 43 has connected thereto as by a set screw 45 an arm 4G. rI`his arm 46 at its free end contacts with the cam shaped end of an arm 47 depending from, secured to, and movable with the arm 33 and forked arm 27 pivoted at 34. Vhen, therefore, it is desired to stop the operation of the take up mechanism the element of the shed forming mechanism such as the harness lever 5 is operated to rockv the sleeve 43 through the described connections and' thereupon the arm 46 swinging downward against the cam surface of the depending arm 47 unclutches the clutch sleeve member 25 and the operation of the take up mechanism ceases. The movement of these parts owing to the slot connection 31 between the link 30 and the pin 32 takes place without interfering with vthe mechanism for controlling the take up mechanism through the action of the weft replenishing mechanism. rl`he time at which the take up mechanism shall be stopped and the period during which it shall be stopped is thus automatically controlled in relation to the shedforming mechanism and the weft is woven in to form a compact mass or stripe.

When as in the case here illustrated the loom is provided with automatic weft replenishing mechanism and with means for stopping the action of the take upA mechanism and provides a predetermined amount of let back upon the action of the weft replenishing mechanism it follows that let back would take place when the take up mechanism is stopped under the control of the means adjunctive 'to the shed-forming mechanism and this 'is midesirable. Hence means arc provided in addition for preventing the action of the let back'mechanism when the take up mechanism is thus stopped. For this purpose a pawl 48 pivotjd on a rigid part of the loom frame at 49"has its tooth located`to drag over the gear 18 during the normal operation of the loom. The forward end 50 of this pawl pro jects beneath a shouldeifoimed by a recess in the link 30. These puts are so related that when the take up mechanism is disconnected irom its driving mechanism under the control of the means adjunctive to the shed-forming mechanism any retrograde movement of the gear 18 is prevented by the tooth of the pawl 48 and the take up mechanism is thus locked against let back. lVhen, however, ,tlie take up mechanism is disconnected from its driving mechanism under the control of the weft replenishing mechanism the link 30 being depressed raises the tooth of the pawl 48 out of the path of the gear 18 so that the take up mechanism is in this case locked by the pawl which in the manner already deseribedpermits a predetermined degree of let back.

The operation of the mechanism. has been fully 'set forth in connection with the forcgoing description and need not be here repeated. It will be seen, therefore, that with this invention the take up mechanism may be stopped at predetermined sh'vl" and for predetermined periods thus enasling the weft to be woven in in compact masses or stripes and give the desired eifect in the completely woven fabric, and that in the caseof a loom in which automatic weft replenishing mechanism is employed this may be eliected without disturbing the usual mechanism provided for stopping the action of the take up and securing a predetermined degree of let back upon Athe occurrence of weft replenishment.

Having` fully described my invention, what l claim as new and desire to secure by Letters Patent is:

1. A loom comprising take-up mechanism, means for automatically effectingv weft replenishment upon failure or exhaustion of weft, shed-forming mecllanism, and means adjunctive to the shed-fermine,` mechanism for stopping the action of the take-up mechanism for predetermined periods during predetermined sheds.

2. A loom comprising take-up mechanism, means for automatically effectingr wett replenishment upon failure or exhaustion of weft, shed formingr mechanism, means ad junctive 4to the shed-forming mechanism, and means controlled thereby and also by said weft replenishing means for stopping' the action of the take-up mechanism, the said means acting under the control of the said adpinetive means to stop the action of the lake-up for prtaletermined periods durthe control of the said adjunctive means to stop the action of the take-up mechanism for predetermined periods during prcdetermin'ed sheds, let-back mechanism, and means for permitting the action of said let-back mechanism only when the action of the takeup 'mechanism is stopped under the control of the weft replenishing mechanism.

4. A loom comprisiih; take-up mechanism, means for automatically effecting weft replenishment upon failure or exhaustion of weft, shed forming mechanism, means adjunctive to the shed-forming mechanism, means controlled by the weft replenishing mechanism and also controlled by the said means adjunctive to the shed-forming mechanism for stopping the action of the take-up mechanism, the said means acting under the control of the said adjunctive means to stop the action of the take-up mechanism for predetermined periods during predetermined sheds, let-back mechanism, and means for controlling the action of the let-back mechay nism only from the weft replenishing mechiss for stopping the action of the take-up mechanism for predetermined periods during predetermined sheds to reduce a transverse striped effect in the fa ric, and means forA preventing let-back upon and during the occurrence of the said periods.

.7. A loom comprising shed-forming mechanism, take-up mechanism,'continuously and positively driven actuating means therefor, means adjunctive to theshed-forming mechanism, means controlled by said adjunctive means for connecting and disconnecting the said actuating means and thesaidtake-up mechanism, and means for locking the takej up mechanism against retrograde movement upon the disconnection of the take-up mechanism from'its actuating means.

f8. A loom comprising automatic weft replenishin mechanism, shed-forming mechanism, ta e-up mechanism,'continuously' and positively ydriven actuating means for the take-up mechanism, mean's adjunctive to the shed-forming mechanism, means controlled Vmeans under the control of the a predetermined degree of let-back and then locking the take-up mechanism against retrograde movement when the take-up mechanism is disconnected from its actuating weft replenishing mechanism'.

9. A loom comprising a normally, positively, and-continuously operated take-up mechanism, shed-forming mechanism, means adjunctive to the shed-forming mechanism, and means controlled by said adjunctive means for stopping the action of the takeup mechanism for predetermined periods during predetermined s heds to produce a transverse striped effect in the fabric, and means for locking the take-up mechanism against retrograde movement during the occurrence of the said periods.

10. A loom comprising take-up mecha-' nism, means for automatically effecting weft replenishment upon failure or exhaustion of weft, dobby mechanismv` means adjunctive to the said dobby mechanism, and means controlled by said adjunctive means for stopping the action oi2 the take-up mechanism for predetermined periods during predetermined sheds.

11. A loom -comprising take-up mechanism, means for automatically effecting weft replenishment upon failure or exhaustion of weft, dobby mechanism, means adjunctive to the said dobby mechanism, and means controlled by the weft replenishing mechanism and also controlled by the means adjunetive to the said dobby mechanism for stopping the action of the take-up mechalio nism, the said means acting under the control of the said adj unctive means to stop the action of the take-up mechanism for predetermined periods during predetermined sheds.

l2. A loom comprising take-up mecha-` nism, means for automatically cifecting weft replenishment upon failure or exhaustion of' weft, dobby mechanism, means adjunctive to the said dobby mechanism, means controlled by the weft rcplenishing mechanism and also controlled by the means adjunctive to the said dobby mechanism for stopping the action ofthe take-up mechanism, the said means acting under the control of the said adjunctive means to stop the action of the take-up mechanism for predetermined periods during' predetermined sheds, let back mechanism, and means' for permitting the apesar/oe action of said let-back mechanism only when the action of the take-up mechanism is stopped under the control of the weft re-v plenlshing mechanism.

13. A loom comprising a normally, positively and continuously operated take-'up nism for predetermined periods during predetermined sheds to produce a transverse striped effect in the fabric.

14. A loom comprising a normally, positively and continuously operated take-up mechanism, dobby mechanism, means adjunctive to the said dobby mechanism, and means controlled by said adjunctive means for stopping the action of 1the take-up mechanism for predetermined periods during predetermined sheds to produce a transverse striped effect in the fabric, and means for preventing let-back upon and during the occurrence of said periods.

l5. A loom comprising dobby mechanism,

automatic weft replenishmg mechanism, take movable element from the up mechanism, actuating means therefor, a clutch normally means and take-lip mechamsm to secure the operation of the latter, a pivoted three-arm member having one arm engagingl clutch, a movable element having a pin and slot connection with the second arm of said three-arm member, means weft replenishing mechanism, a second movable element cooperating with and actin when movedto move the third arm of sai three-arm member, a connection between said second movl able element and the dobb mechanism, whereby either the first movable element or the second movable element may `be independently actuated to move zfiie said clutch l into disconnection position and whereby' 4when the second movable element is actuated M from the dobby mechanism the take-up mechanism is stopped to `produce a trans. verse'striped edectin the fabric.

In testimony whereof I have signed my name to this specification.

HENRY J. HEDLER.

connecting said actuating" 30 said r.

for actuating said

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