US1484008A - Wire motion for looms - Google Patents

Description

G. H. CHALK WIRE MOTION FOR LOOMS' Feb.'19, 1924..

Filed M y 27. 2 Sheets-Shet 1 .G. CHALK WIRE MOTION FOR LOOMS Filed May, 27 1921 2 Sheets-Sheet 2 Patented Feb. 19, 1924..

GEORGE E. CHALK, OF, PHILADELPHIA, PENNSYLVANIAt WIRE MOTION roe Looms. 1

Application filed May 27,

ploying wires for forming thepile in the cloth, it frequently happened that the wires would be broken off and the eye portions thereof would remain in the holder for-inserting the wire in the shed, so that the next wire would be prevented from being ongaged by the holder, and, until the broken off eye was removed from the holder, the 100111 would continue to operate and weave a defective fabric thus resulting in great loss, as well also frequently causing damage to the loom itself. In other instances, the spring tension of, the gripping device of the holder which is employed to hold the eye of the wire in the, holder would sometimes be sufficient to improperly pull the wireout of the fabric, which would also cause a' defective pick in the cloth, rendering the same unsalable.

The object, therefore, of my present invention is to provide in a 100m of the character described means for positively insuring the removal of the eye portions of the wires from the holder, to thereby eliminate the damage and loss caused when the same are improperly held therein.

The nature and characteristic features of my invention will be more readily understood from the following description, taken in connection with the accompanying drawings forming part hereof, in which- Figure l is a front elevation, certain parts being broken away, of a portion of a wire motion loom having a device embodying the main features of my invention mounted therein;

Fig. 2 is a top or plan view thereof; and

Fig. 3 is a perspective view illustrating the device embodying the main features of my present invention with certain coacting p'arts of the loom shown in the positions assumed as the device of my present inven- 1921. Serial No. 473,039.

tion is engaging the: eye of the wire for'the purpose of removing the same from the holder. Y i

Referring to the drawings, my invention is therein shown as applied toawire moti'on loom of a well known type, but it"will,fof-

course, be understood that the, same"is equally applicable to looms employing other types ofmechanism for manipulating the pile formin formation 0 the cloth.

In thev loom v there shown 5 are the forming wires having enlarged end' portions 6 provided with eyes 7. The eyes wires in the 100m, during-the are adapted to be engagedby a hookme'm} her 8 at proper times for the purpose ofre moving the same from the cloth after the pile is formed and a sufiicient number ofpicks have been beaten, up to maintain the formation of the, pile. The hook member 8 is carried by a cross head 9, which is mounted upon a stationary rail or track 10 and is adapted to be reciprocated thereon. .The means for reciprocating the cross head 9 may comprise a link member 11, one end'of which is pivoted to thecross head 9 and the v other end of which is pivotally connected'to' the free end of a lever 12, which lever is pivoted at its other end asv at .13, to a, bracket i l-carried by the framework oftheloom,

Motion is imparted to the lever 12 by means of a connecting rod 15 one end of which is I pivotally connected to th'e'lever 12 midway its extremities and the other end of whichis pivoted to an adjustable crank member 16, which is rotated byany suitable mechanism in synchronism with the operation of the loom. The mechanism above described is so constructed and arranged that at each reciprocation of the crosshead 9 one of the eyes 7 of a pile forming Wire 5 willbezengaged by the hook member 8, and when the cross head 9 is retracted, the wire will be withdrawn from the cloth.

Arranged above the wire extracting" mechanism above described, and suitably supported by the framework of the loom, is a horizontal shaft 18, upon which are. secured depending arms 19, which carry at,

their lower ends a horizontal track orrail 20, which has a swinging motion about the. axis of the supportingshaft 18. The track or rail 20 servesas a guide for the-reciprocation of the holder 21, which is 'mouhtedl lO thereon, the reciprocation .beingefi'ected' by-V means of a lever 22, one end 'of which is in slotted engagement with a stud 23 carried by the hopper21, and the other end of which is pivoted, as at 24, to the end of a supporting arm 25, which also is carried by the shaft 18 which carries thetrack supporting arms 19. The lever 22 is actuated by means of a connecting rod 26, which is pivoted at one end to the lever 22, midway its extremities, and pivoted at its other end to one end of a bell crank lever 27 which is pivoted,'as at 28, to theframework of the loom. The other end of the bell crank lever 27 carries a roller 29 which is engaged by a cam 30, whichis also rotated by any suitable mechanism in "synchronism'with the operation of the loom. The construction and arrangement of the foregoing mechanism is suchtl at the holder 21 will be reciprocated at proper intervals and will also be moved s'idewise, for a purpose to be presently exp a n d- The" holder 21 is provided with means for engaging and gripping the enlarged portion 6 at the end of eajchpile forming wire 5, as clearly shown in Fig; 3 of the drawings. The particiil ar arrangement there shown comprises the'provision at the lower end of the 21 of a turned over portion 32, fdrming a groove into which the lower edge of theenlarged portion 6 of the wire 5 is adapted to enter, and above this groove there is mounted a pivoted member 83,:also pro vided on itsunder face with a groove in which the top 'niarg-in of the enlarged portion 6' of the wire '5 is adapted to be seated. The pivoted member 33 is engaged by'one end of a ring 3 4,'the other'end of which is sec'nred tothe plate ofthe holder 21, as at 35 the arrangement being such'that the tension of the "spring 34 will cause the pivoted member'33' to resiliently grip the enlarged end 6 of the wire 51' i The construction and arrangement of the holder and its actuating parts' is such that after-"each wire is'withdrawn from the cloth by means of the withdrawing"mechanism first above described, and is retr'acted sufficiently to entirely withdraw the same from the cloth, the enlarged end 6 of the wire 5 will be receivedby thefresilient gripping mechanism above described, and then through the swinging ofthetrack 20 about the axis of the shaft 18, the same willbe carried towards the rearof the 'loom, after theholder will againbe"caused to reciprocate on its'tr'ack 20 to insert'the wire inthe shed,'s'o that the same be beaten up by he reed 37 and thus' formthe neXt pile in thecloth." i

All of'the mechanism above described is well known tothose skilled inth e art; and the description thereofis'only necessary in oi derthat the novel device of my present inentio'n may be more readily understood. in the operation of the w'ire'motion above described, it frequently occurs that the wire will be broken off at some point between its extremities, or, as most usually occurs, near the enlarged portion 6, and when the holder 21 is retracted after the wire is inserted into the weave, the broken portion will be carried back by the holder, and when the next wire is withdrawn from the cloth by the 6X- tracting hook 8, the holder will not be in a condition to receive the same, and damage will often result to the mechanism of the loom, or in any event, the next wire will not be carried forward and inserted in the shed in the proper manner, as a result of which a defect in the Weave will occur which will render the cloth unsalable. It sometimes also occurs that the 's pringtension on the pivoted member33 will be too strong to permit the enlarged end 6 to be freedwhen the holder is withdrawn, and the wire'will be improperly pulled out of the cloth, thus also" causing defects in the weave and disarrangement of the mechanism.

To obviate these defects in the operation of wire motions of thetype above described, there is provided a device 40, shown inp'erspective in Fig, 3 of thedrawings, for positively insuring the withdrawal of the" eye portion 6 of the wire from the holder in the event of the Wire breaking or not being held against withdrawal by the holder; This device 40 comprises a bracket 41, which is s ec ured to the breast rail or other suitable part of the loom and is provided on it's extending portion with a channel 42, in which is mounted a bar 43. The forward end of the bar43 is suitably bent and shaped'so as. to engage the eye portion 6 ofthe wire 5 arternmsame is inserted in the shed by the reciprocation of the holder 21 on its track 20, and, when the holder 21 is retracted, the engagement of the point 44 of thebar 43 with thejey'e 7 or other part of the enlarged portion 6 of the wire 5 will insure that the same will be positively extracted from the gripping portion of the holder 21. In order that the point 44 of the bar 43 may be permitted to rideinto engagement with the eye portion 6, the same is capable'of slight'n'iotion in the channel 42 of the extending portion of the bracket 40, but the bar 43v is normally held in its forward position by means of a spring 45, which connected one end to pin- 46 carried on the underside of the bracket 41, and at its other end to a downwardly extending portion 47 of the rear end of the bar 43, which passes through a suitable slot 48 ent invention will not be called into play. If, however, the weft thread in the next pickshould run out or break, it will be readily understood by those skilled in theart that no binding effect on the wire will take'place, and if this occurs before the return movebent of the holder begins, the wire is likely to be withdrawn by the holder, and as the Wire has been beaten up close to the fabric, the knife on the end of the wire will cut through the warp ends with the consequent great damage resulting therefrom.

When, therefore, the eye portion 6 is not withdrawn from the holder 21 in the normal manner, the point 44 of the bar 43 will engage the eye portion 6 of the wire 5, either at the heel thereof, or in the eye 7 as shown in Fig. 3 of the drawings, and the wire will thereby be prevented from being withdrawn and cut outs in the fabric will be obviated.

It should also be noted that the point 44 of the bar 43 is located beyond the normal line of the ends of the eye portions 6 of the wires 5 in the fabric, so that the ordinary action of the wires is not interfered with, but in the event, that, in the return movement of the holder, an eye portion 6 of one of the wires remains therein, then the point 44 will act to extract the same from the holder. As this action will only occur when something is wrong in the operation of the loom, it will, of course, always be necessary to stop the loom to make the required corrections, at which time the wire, or rather the eye'portion thereof, which has been engaged by the point 44, may be manually disengaged therefrom, and properly arranged as may be required.

It will be seen that by the foregoing arrangement, there is provided means for positively insuring the extraction of the eye portion of the pile forming wire from the gripping mechanism of the holder when the holder is retracted after having delivered the wire into the shed, which mechanism will operate to free the eye portion of the wire independently of the gripping tension of the warp upon the pile forming wire, and which will operate even when the wire is brokenolf close to the eye portion.

Having thus described the nature and characteristic features of my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a pile fabric loom, the combination a with the pile forming wires having enlarged eye portions and a reciprocating holder adapted to engage and grip said eye portions and to insert the wires into the shed, of means adapted to positively engage the eye portion of the wire and retain the same against retraction by the holder in the event that the same is not normally withdrawn therefrom.

2. In a pile fabric loom, the combination with the pile forming wires having enlarged eye portions and a reciprocating holderwadapted to engage and grip said eye portions and to insert the wires into the shed, of means for detaching the eye portions of the wires from the holder in the event that the same are not normally withdrawn therefrom, said means including a member carried by a stationary portion of the loom having one end adapted to encounter and engage the eye portion of the wire and retain the same against retraction by the holder.

3. In a pile fabric loom, the combination with the pile forming wires having enlarged eye portions and a holder adapted to engage said eye portions and to insert the wires into the shed, of means for detaching the eye portions of the wires from the holder in the event that the same are not normally withdrawn therefrom, said means including a slidable member carried by a stationary portion of the loom having a pointed end adapted to encounter and engage the eye portion of the wire and retain the same against retraction by the holder, and a spring for normally maintaining said member in its forward position.

4. In a pile fabric loom, the combination with the pile forming wires having enlarged eye portions and a holder adapted to engage said eye portions and to insert the wires into the shed, of means for detaching the eye portions of the wires from the holder in the event that the same are not normally withdrawn therefrom, said means comprising a bracket mounted on a stationary portion of the loom, and a bar carried by said bracket having a pointed end adapted to encounter and engage the eye portion of the wire and retain the same against retraction by the holder.

5. In a pile fabric loom, the combination with the pile-forming wires having enlarged eye portions and a holder adapted to engage said eye portions and to insert the wires into the shed, of means for detaching the eye portions of the wires from the holder in the event that the same are not normally withdrawn therefrom, said means comprising a bracket mounted on a stationary portion of the loom, and a bar slidably carried by said bracket, said bar having a pointed end adapted to encounter and engage the eye portion of the wire and retain the same against retraction by the holder.

6. In a pile fabric loom, the combination with the pile forming wires having enlarged eye portions and a holder adapted to engage said eye portions and to insert the 3 wires into the shed, of means for detaching the eye portions of the wires from the holder in the event that the same are not normally withdrawn therefrom, said means comprising a bracket mounted on a stationary portionof the 100m, a bar SlidgtblY carried by said bracket, said. ba'r hgving' a' pointed end adapted to encounter and -en gage the'eyeportion of the Wire and 're ta'in thesamengninSt retraction by the gage said'eye portions and to insert the Wires into the shed, of means for detaching the eye portio'nsof the Wires from the holde'if in the event that the same are not normally Withdrawn therefrom; said means compris-v ing'a"bracket nieunt'e'd en a stationary poi"- tibn of the 'I00 m; e'har slic lably carried by sai'l' bracket, said bar having a pointed end edapt'ed"tb encounter tn'd engage the eye portion of the ftvire and retain? the same against retraction iby' the holder," and a hereof, I have hereunto

Images