US1850306A - Stopping mechanism for looms - Google Patents

Description

March 22, 1932. w v. LINDSJO ET AL 1,850,306

STOPPING MECHANISM FOR LOOMS Filed Oct. 15, 1931 4 Sheets-Sheet l ATTORNEY March'22,.l932. v. LINDSIO ETAL- STOPPING MECHANISM FOR Looms Filed Oct. 4 Sheets-Shet 2 VE N OR Z? Maw ATTnI-PNF'Y March 3 v. LINDSJO ET AL 1,850,306

STOPPING MECHANISM FOR LOOMS Filed Oct. 15, 1951 4 Sheets-Sheet 3 7 lNl/f/VTCR BY WAN.

ATTORNEY March 22, 193 2. 7 v. LINDSJO ET AL 1,850,306

STOPPING MECHANISM FOR LOOMS Filed Oct. 15, 1931 4 Sheets-Sheet 4 INVENTOR M42; it BY 0 42;} v m 1? Jul.)

Patented Mar. 22,; 1932 UNITED STATES? SETTS, ASSIGNORS TO DRAPER CORPORATION, OF, HOPEDALE, MASSACHUSETTS, ,A

CORPORATION OF MAINE PA/TENT; 1 arm VERNER LINDSJO, or HoPEnALni AND LEONARD, mnoenn s, on MENDON, MASSACHU- s'rorrme MECHANISM Eon. LOOMS Application filed October 15, 1931.. Serial'No. 569,016.

This invention relates to shuttle changing looms and is more particularly directed to mechanism for stopping loom operation should either one of two loom parts be disturbed from their normal weaving position.

Shuttle changing looms are of two general types, one of which eftectsa change in the shuttles by arresting the loom operation and the other of which effects a change in the shuttles during the continued operation of the loom. The present invention is of the latter type and is associated *with a-shuttle changing loom which continues in operation during the change of shuttles. 1

It is now the ordinary practice to. effect a change in the shuttles by the substitution for I a shuttle in which the filling has become either broken or substantially exhausted, by a shuttle containinga fre'sh'supply of filling. I In effecting the shuttle change box plates of the change shuttle box are displaced from' their normal position to permitthe, exit of.

the depleted shuttle andthe entranceof a shuttle supplied with filling. Such displacement of the box plates maybe variously effected, but it Will happen at, timesthat one or the otherof the box plates will fail to return to normal Weaving position after shuttle change, with the result that if the shuttle is picked from the change box undensuch conditions it is liable to be thrown through the warp threads, or get caught in the-shed, or thrown out of the 100111 entirelyand probably to the injury of the loom attendant.

Duringthe loomoperation should the shuttle get caught in the shed or trapped the warp threads areliable to beinjured during the beat-up movement of the lay. p

One of the important features of the pres-. ent invention consists in a loom stopping mechanism which shall be rendered effective to stop the loom in case either of the defective conditions stated takes place. Incarrying this feature of the invention intopractical effect the box plates ofthe changeshutt e box or one of them is connected to a stopinitiating mechanism and a loose reed is associated withanother initiating mechanism to effect loomstoppage in'case theshuttle gets trapped in the shed. Associated with 1 each of the stop initiating mechanisms is a stop motion common to each, so that on the occurrence of either of the defective conditions noted, the common stop motion will be rendered effective to stop the loom.

The invention and novel features thereof will best be made clear from the following description and accompanying drawings of one good form thereof.

In the draw1ngs:-

. Fig. l is a front to rear sectional elevation r Fig. 4 is a perspective View at the rear of the 1ay,some"ofthe parts beingishownin section and others broken away for clearness of illustration.

The'loom frame 1 maybe of usual construction'for support of the operating parts. The lay 2 is carried by the usual lay sword 3 and has movement towards and from the front of the loom, as usual, by the pitman 4-.

The change shuttle box at one end of the lay comprises a back plate 5 carried by arms. 6 pivotally mounted at 7 on brackets 8 secured to the front of the lay. The front box plate 9 is carried by arms 10 mounted at 11 atthe back of the lay. The back box plate 5 ISllOI'lll'illlj underthe impulseof a spring 12, normally actmg to move the back box plate to weaving position after a changeof The front box plate 9 has an 1n-' shuttles.

"clined portion 13 and is normally held in its lower weaving position by an abutment or screw 14 carried by one or more of the arms 6 of the back box plate, the efiect being that when the back box plate is raised by any appropriate mechanism the front box plate is free to be lifted by the enteringshuttle", or as more fully explained in applicants copending application Ser. No. 523,455,"filed March18, 1931. p

Secured to the arms of the back box plate is a downwardly extending tail piece 15 which, on call for replenishment of filling, may be moved by an arm 16 extending from a shaft 17 supported on the loom frame and to which is connected a downwardly extending arm 18 having a rearwardly extending operating member 19 which, on call for replenishment of filling, may be engaged by a hunter 20. on the lay, with the result that upon a shuttle change the back box plate will be lifted to permit the exit of the depleted shuttle and the incoming shuttle will itself lift the front box plate 9 as the full shuttle is moved rearwardly into the shuttle box. It is not deemed necessary herein to enlarge upon the details of the mechanism for displacing the box plates for the change of shuttles, as the details of suchmechanism form no essential part of the present invention and are more fully and clearly described in the copending application above noted.

As hereinbefore stated, one at least of the box plates is associated with a stop initiating mechanism which, as shown in the present in stance of the invention, consists of a shaft 21 supported by the lay for rocking movement and projecting from the shaft 21 is an arm 22 connected by a link 23 to the back box plate 5, the construction being such that when the back box plate is raised to permit the change of shuttles the shaft 21 will be rocked.

Secured to the rock shaft 21 at the oppo site side of the loom from the changed shuttle box, as indicated in Fig. 4, is a pull finger 24, which together with the shaft 21 and its connection with the back box plate constitutes one of the stop initiating mechanisms.

Extending longitudinally of the lay is the reed 25, the upper end portion of which at 26 is mounted in the hand rail 27, for swinging movement, and concentric with the shaft 21 is a sleeve 28 mounted in suitable bearings 29 carriedby the lay. Secured to the sleeve 28 and extending upwardly therefrom are the arms 30 to which is secured a reed loclb ing bar 31, Fig. 4, which is adapted to rest against the lower bar 32 of the reed and maintain it yieldingly in weaving position under the impulse of a spring 33, one end of which may be fixed to the bearing 29 and the other end of which may be secured to an adjustable member 34 secured to the sleeve.

The sleeve 23has secured thereto a dagger 35, Fig. 4, which under normal action of the spring 33 will be held in its lowered or inoperative position. The dagger 35 together with the sleeve and parts described relative there to, constitute the second stop initiating mechanism.

Secured to and extending: frontwardly from the sleeve 28 is a locking finger 36 which, as the lay beats up, is adapted to engage beneath a fixed lug 37 secured to the loom frame, the construction being such that after the shuttle ias been picked. thereed' 25 will be held yieldingly in its operative weaving position by the spring controlled member 28, and arms 30, so that should a shuttle get trapped in the shed or not complete its picking movement, the reed is free yieldingly to move backwardly, but should the shuttle not get trapped in the shed as the lay beats up the part will engage beneath the lug 37 and lock the reed for the beat'up movement, as indicated more clearly in Fig. l. a

A hereinbefore stated, the two stop initiating mechanisms are associated with a common stop mechanism to effect loom stoppage on backward movement of the lay should the back box plate not return to normal weaving position after a change of shuttles, and effect loom stoppage on the frontward movement of the lay should the shuttle get trapped in the shed.

The stop mechanism common to both initiating mechanisms comprises a stop member 38 mounted on the loom frame for movement in two directions, and as shown is constituted asa stop rod mounteo. in bearings 39 for longitudinal movement towards and from the front of the loom. Adjustably mounted on the stop rod 38 is a lug 40 adapted to be engaged by the hunter 35 when the latter is operatively positioned on frontward movement of the lay. Likewise, adjustably secured to the stop rod 38 is a second lug 41 adapted to be engaged on backward movement of the lay by the pull finger 24, the lug 42 of which will engage frontward of the lug 41 on backward movement of the lay should the back bOII plate 5 fail to return to weaving position after a change of shuttles.

As exemplifying the operative conditions above described it will be noted that in Fig. 2 the pull linger 24 is engaged with the lug 41 to move the stop rod 38 rearwardly as the lay goes back, when the back box plate has failed to return to normal weaving position after change of shuttles. Likewise in Fig. 3 the position of parts, as indicated, shows the engagement of the lug 40 by the bunt-er 35 to move the stop rod frontwardlyshould the shuttle be trapped in the shed as the lay moves towards the front of the loom.

In addition to the stop rod 33 the loom stopping mechanism common to both stop initiating mechanisms includes a shipper 43 pivotally mounted on the loom frame at and having a downwardly extending portion 45 which is provided with a projection 46, the construction being such that should a rearward force be applied to the shipper 43 above its pivotal mounting 44, the loom will be stopped and should a frontward impulse be imparted to the lug 46 carried by the shipper below its pivotal mounting the loom will again be stopped.

The stop rod 38 has pivotally connected thereto at 47 a shipper knock-off provided with an upwardly extendingarm 4:8 and a downwardly extending'arm 49, the twoarms extending. to opposite sides of the path of movement of thestop-rod. The upwardly extending arm 4-8 of the shipper knock-off has a shipper engaging portion 30,. whilejthe lower arm 49 has an end portion 51 bearing upon the projection .46 of the shipper below its pivotal 'mounting, .the effect beingthat if the upper arm 48 of the shipper knock-cit is moved rearwardly from the position indicated inFig. 1, theloom will bestopped and if the lower end portion of the shipper is moved :trontwardly by thelower arm 190f the shipper knock-oft, theloom will again be stopped. i v I To efiect these movements of the shipper knock-0E a fixed fulcrum stop;52 is provided above the pivotal mounting of the shipper and a second fulcrum stop 53 is provided below the pivotal mounting of theshipper and when the parts are in normal Weaving position, .as'indicated in Fig. 1, the upper and lower end portions of theshipper knock-off bear upon their fulcrum stops; Should theshipper rod38 bemoved rearwardly owing to the box plate nothaving. returned'tonormal position, the shipper knock-off will turn" by the rod 5'5, both of which maybe connected to the shipper by'the. projec tion 56.

From the constructiondescribed as: one

good practical form of the present invention,

it will'be noted that should a'box plate notbe returned to its normal position after the shuttle change, it will act through its initi: ating mechanism on the backward movement of the lay to actuate theloom stopping'mech anism or throw the shipper to its idle position, and should the'shuttlebe trapped-in the shed the initiating mechanism associated with the'loose reed will again act through the same loom stopping mechanism to stop the loomor throw the shipper to itsidle position.

When the shuttle becomes trapped in the shed and the-dagger 35 is operatively positioned to eifect, loom stoppage, it may be desirable to retain orzlock the dagger in such position with the reed displaced rearward ly and to thisend the dagger35 has pivotally connected thereto a locking. member 57, which. extends upwardly from the dagger through a loop 58 secured at the ,front'of the. lay.- In normal I weaving operations, as

indicated in Fig.1, the locking member 57 is'initslowered position at which time a locking lug '59'is below the loop 58. When,.how-

ever, the loom -is stopped by reason of a trapped shuttle, the locking member 57-is raised to position the locking lug 59 above the loop 58, as indicated inFig. 3, whereupon the arms 30 and locking bar 31 of'the reed may be held in their reed releasing position.

WVith the parts thus locked-the shuttle may be -readily removed from the shed whereupon the loom attendant may trip the locking member 57 through thehand piece 60 at the top of the locking member. l The hopper for the filled shuttles and the shuttle changing mechanism are notherein shown and described, because the details thereof form no part of the present invention and are fully and completely. described in the copending application hereinbefore called to attention... I What is claimed is 1. Ina loom of the shuttle changing type,

the combination of the layohaving ashuttle box provided with box plates adapted to be displaced from their normal weavingpositions forthe entrance and ejection of a shuttle, loom stop initiatingudevices operatively positioned tor'efiect 1oom3 stoppage should one of the box plates failto return to normal weaving positionafter a change. of shuttles, a loose reed motion carried by thelay, loom stop initiatingdevices operatively positioned to effect loom, stoppage should the shuttle be. trapped .in the shed, and a train of mechanism common to and actuated by either of the initiating devices for stopping. the loom when the shuttle is trapped or. the box plate fails to return to normal position:

2. Ina shuttle changing loom, the combination of. the lay, a reed mounted on the lay-for rearward displacement by a trapped 5 shuttle, a shuttle changing box having back and front box plates mounted fordisplaoement from normal weaving position for change of shuttles,"and a single train'of loom stopping mechanism adapted :to be; actuated to eflect loom stoppage when a shuttle gets trapped in the shed and also when one of the box plates fails'to return to, normal weaving position after a change of shuttles.

3. Ina shuttle changingloom, the combination of the lay, a reedmounted on the lay forrearward displacement by a trapped shuttle, mechanism operatively positioned to, cf feet loom stoppage by rearward idisplacea ment of the reed, a shuttle box having box plates at least one of which is mounted for displacement from normal weaving position for change of shuttles, mechanism operatively positioned to effect loom stoppage should one ofthe box plates fail to return to normal 1 weaving position-after a change of shuttles, and loom stopping devices r'commontoi'both said mechanisms for actuation by either to stop the loom.

4. In a shuttle changing loom, the combination of the lay, a reed mounted on the lay for rearward displacement by a trapped shuttle, mechanism operatively positioned to effect loom stoppage by rearward displacern'ent' of'the reed, a shuttle box having box plates at least one of which is mounted for displacement from normalweaving position for-change of shuttles,.1nechanism operative-' effect loom stoppage by rearward displacement of the reed, a shuttle box having box plates at least one of which is mounted for displacement from normal weaving position for change of shuttles, mechanism'operatively positioned: to eflect loom stoppage should one of the boxplates'fail to return to normal weaving position after a change of shuttles, and loom stopping devices common to both said mechanisms for actuation by either to stop the loom including a stop member mounted for movement in one direction by one of said mechanisms and in the oppo site direction by the other of said mechanisms, and a shipper mounted for movement '5 in one direction by either movement of the stop member.

6. In a shuttle changing loom, the combination of the lay, a reed mounted on the lay for rearward displacement by a trapped shuttle, mechamsm includn'ig a dagger operatively positioned by rearward displacem ent of the reed, a shuttle box having a box plate mounted for displacement for change of shuttles, mechanism including a finger op eratively connected to the box plate, a stop 10d common to both mechanisms and having a bunter for engagement by the operatively positioned dagger to stop the loom on frontward movement ofthe lay, alug connected to the stop rod for engagement by the operatively positioned linger tostop the loom on rearward movement of the lay following change of shuttles and failure of the box pl'ate'to return to normal weaving position,

and a shipper actuated by stop rod movement in either direction. 'Z. In a shuttle changing loom, the combinationv of the lay, a reed mounted on the lay for rearward. displacement by a trapped shuttle, mechanism including a; d'agger'openatively positioned by rearward displacement of the reed,a shuttle box having a box plate mounted for displacement for change of shuttles, mechanism including a finger operatively connected to the box plate, a stop rod common to both mechanisms and having a hunter for engagement by the operatively positioned dagger to stop the loom on frontward movement of the lay, a lug connected to the stop rod for engagement by the operatively positioned finger to stop the loom on rearward movement of the lay following change of shuttles and failure of the box plate to return to normal weaving position, shipper and a knock-01f member interposed between the stop rod and shipper.

8. In a shuttle changing loom, the combination of the lay, a reed mounted on the lay for displacement by a trapped shuttle, a shuttle box having a 'box plate mounted for displacement for change of shuttles, devices carried by the lay and controlled by the reed, devices carried by the lay and controlled by the position of thebox plate, and stop mechanism common to the two devices and rendered effective to stop the loom when the reed is displaced and when the box plate fails to returnftonormal weaving position following a change of shuttles;

9. In a shuttle changing loom, the combination of the lay, a reed mounted for displacement by a trapped shuttle, a shuttle box having a box plate mounted for displacement for change of shuttles, two concentric rocking members mounted on the lay, one controlled in its rocking movement by the reed and the other controlled in its rocking movement by the box plate, devices on each rocking member to effect loom stoppage, a shipper, and means between the shipper and said devices and common to each of-them to knock off the shipper when a shuttle is trapped in the shed or the box plate fails to return to normal weaving position after a change of shuttles.

10. In a stop motion for looms, the combination of a stop rod: mounted for longitudinal movement, a shipper movable to and from loom running position, a shipper knock-ofl member mounted on the stop rod and having two parts engageable with the shipper, a fixed stop engageable with one end portion of the knock-off member to cause the said member to move about the fixed stop as the stop rod is moved in one direction to stop the loom, and a projection connected to the shipper and engaged by the knock-oft member to cause the said member to move about another fixed stop to throw the shipper 'as the. stop rod is moved in the opposite direction.

11. Ina stop mechanismforlooms,the combination of a stop'member movable in either of two directions to-efi'ect loomstoppage, a shipper movable'to and from loom running position, a knock-off member connected to the stop member for swinging movement'relative thereto, a fulcrum stop at each side of the path of movement of the stop member about one of which the knock-ofi' member may turn as a fulcrum when the stop member 7 is moved in one direction to effect loom stop- 7 page and about the other of which the knockoff member may turn as a fulcrum when the stop member is moved in the opposite direc of stop rod movement, a fulcrum stop for the shipper knock-off at opposite sides-of the path of stop rod movement about one of which the shipper knock-off may turn as a fulcrum when the stop rod is moved from its normal position in one direction to stop the loom and about the other of which the shipper knock-off may turn as a fulcrum when the stop rod is moved from normal position in the opposite direction to stop the loom. 13. In a stop mechanism for looms, the combination of a stop rod mounted for movement in opposite directions from normal position to effect loom stoppage, a shipper pivotally mounted for movement to and from loom running position, a shipper ,knock-ofi' pivotally mounted on the stop rod and having oppositely extending arms for engagement with the shipper at opposite sides of its pivotal mounting, a fulcrum stop for the shipper knock-off at opposite sides of its pivotal connection with the stop rod and about one of which the shipper knock-01f may turn as a fulcrum upon movement of the stop rod in one direction from normal position to effect loom stoppage and about the other of which the shipper knock-ofi'may turn as a fulcrum upon movement of the stop rod from normal position in the opposite direction to effect loom stoppage. I

14. In a stop mechanism for looms, the combination of a stop rod mounted for movement in opposite directions from normal p0- as the stop rod ismoved from its normal position;

In testimony whereof, we have signed our names to this specification;

VERNER LINDSJO. LEONARD M. ROGERS.

sition to effect loom stoppage, a shipper piv otally mounted for movement to and from loom running position and having a projection below its pivotal mounting, a shipper knock-off connected to the stop rod for sw1ng ing movement in either directionand having an upperportion for knocking-off the shipper when the shipper knock-ofl' is swung in one direction anda lower portion for knocking-ofi' the shipper when the shipper knocle d: swingingmovement of the shipper knock-0E off is swung in the opposite direction, and fulcrum' stops for determining the direction of

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