US2009893A - Loom stop motion - Google Patents

Description

July 30, 1935. v. LINDSJO 2,009,893

LOOM STOP MOTION Filed Jan. 8, 1955 2 Sheets-Sheet 1 INVENTOR. W/ T/VEJQ. YEE/VEE L/n'am/o,

L/A To/YJT sue/v. C Q BY 2 F 9 ATTORNEY.

July 30, 1935. v. LINDSJO LQOM STOP MOTION Filed Jan. 8, 1935 2 Sheets-Sheet 2 INVENTOR. VEENEE L/NDa/O ATTORNEY.

Patented July 30, 1935 I If LooMs'roP Mo'rroN Verner was; Stockholm; steam, assignor 1m A ration of Maine ation', Hopedale, Mass, acorpo- J ,ApplieationfJanuary s, 1935, serial No. ss1

, ,*vxca ms-fiw -139 4 J The present inventionipertains to. loom stop F /1 planvl w of h p m i n minotions and has more particular reference to stop motions for actuating a. shipperv upon breakage or=absence of filling? I 5 The conventional loompof .thetype -to.which my invention pertains, is provided with a :filling fork. and a filling fork slide whichJis-normally stationary but which is positively movedzupon detection by the fork :of fillingfailure; Positive connections from thesllde serve to move the loom control member, or." shipper, to loom stopping position upon movement of:.the-v slide. As previously constructed; the filling fork slideland shipper operating, connectionsv were positively held in stopping position until' after the loom had been turned forwardly-at least one full:pick after the stopping movement had taken place. Theprior constructlonmentioned was not objectionable where the loom continued: to run for .aypick or two after stopping movement. of 'the shipper.- However, modern loomszarei equipped with moreefficient brakes, which bring-the loom to a full stop within; less than half a. revolution from the time the shipper is actuated. When" so equipped, the loom-willstop from the fillinggfork before the slide and; shipper-operating connections "have returned to loom-runningwposition, with the result that the shipper ;:oanithen*be moved only part way .on. with such construc- 30 tions it has been necessary in restarting; the; loom to-first move the shipper part waya-ff-on" to' start the loom running and then hold'the shippei until thei loom has turned over far. enough to return the slide tonormal position. .Suchmperationis awkward'and even dangerous. Furthermore; it requires. thattthe clutch and "brake -be .setato :operate when-the shipper is'near its off position, which objectionably delays their operation from the variousstop motions: 1 1 .11. lpropose to overcomethe aforementionedobjectionsby. providing for full movement a of the shipper to, loom-running position, while the filling fork slide is in stopping position. 7 To the end mentioned, theinvention provldes, inla loom havin g .ashipper andaffilling' stop .motion including a. filling fork slide; connections from thelslid'e for positively actuating the shipper and" means for releasing f'such connections" upon [stopping movement of the slideh Thereis also provided meansjfor' automatically restoring such -connections subsequent to the restarting of the 100m. 1""

The preferred embodiment; ofthe invention is illustrated on the accompanying drawi 'ss'j of N which:

prising saidpreferred embodiment;

Fig. 2 is a sectional elevation taken approximately oii =line:2 -2-,"Fig. 1; p I Fig. .31isa plan. view showing certain parts of the stop motion' as they appear .just after. the loom has stopped; and .i 1

Fig. 4 is .asectionalview taken approximately on .line. 4-4, Fig. 3." .7 I r'lheiloomflshowntongthe drawings is conven- 10 tional in many respects and. it is accordingly but fragmentarily illustrated. Of the; conventional construction there is shown-a part of the frame including. left hand loom side I, andbreast beam 2 at the front of the;loom.; There is also shown thelay 3 which reciprocates toward" and from the front of the loom, a shuttle-box .4 carried by the lay, a'shuttle' S'adapted :to-be' picked along the lay, a fi1ling.ifeeler-6,;and feeler controlled parts .1 for effecting filling replenishment... Breakage orabsence offilling is detected by suitable means such as the conventional filling fork. 8 which is *pivotally mounted in the filling fork .slide.9 for cooperationv with the grate Ill.

When the fork is not ,tiltedby filling it catches v on a hook ll on-a'means such as weft hammer l2 for positively moving the slide,:9. The, weft hammer, as 'is customary,;reciprocates forwardly .zand rearwardly,- making one complete reciprocationafor each two-picksofthe loom, andis thus 39 adapted to move the fillingrforkslide forwardly upon occurrence of" filling failure. 1. The loom controls are represented on-the drawing's-by ashipper l3. which'may operatea clutch and brake, or the like, not shown. This shipper .is .movedforwardly to-full-line position of Fig.1

to start the loom, "and is movedrearwardly to effect 1 loom stoppage. The present invention provides a novel means for effecting stopping 'movementof the shipper from the filling fork to slide. '3 Connections'froma filling fork slide for movis moved clockwise, Fig. 1. A member -l6 i s;c on;-

-nectedto bepositively moved forwardly by the slide 9. To this end it is conveniently constituted by an arm fixed to the rock-shaft l1 and having a second arm [8 fixed thereto which second arm extends in front of the slide. The member I6 is releasably but positively connected with the shipper knock-off lever, as-by means of a dog I9 which is pivotally mounted on the member at 20 for movement both with the member and relative thereto. A depending shoulder 2| on the dog engages the knock-off lever for moving the latter. g.

The knock-off parts are shown, Fig. 3, in the positions they occupy just after the loor'nhas stopped. The shipper I3 is shown in its off position in full lines, while the on or loom-run"- ning position thereof is represented "by dotted lines. The knock-off lever. l4 is at the end of its, knock-on movement. It will be apparent that if the knock-ofi lever remained positively con-'- nected with the member 16 at thistime, it would be impossible to move the shipper alltheway on. I have provided means for releasing such connections upon, or subsequent to, the knockoff part of the movement of the'slide and-lever, and simultaneously :with the stopping of "the 100m g m; H

The releasing of the connections between the shipper may be effected invarious-wayse The particular connections' -shownon the drawings are released by the moving'of the'dog l9 out of engagement. with the knock-off" lever. To this end, there is provided cam means comprised of a fixed cam part 22 and a downwardly and rearwardly: inclined nose 23 on the dog l9. ..=-The part 22 may be fixed to the loom frame as shown. When the loom is running the parts occupy the positions shown more clearly by Fig. 2. 'As the slide 9, member It and. dog 19 move forwardly, the part 22 engagesthe nose 23 and thereby swings the dog I! upwardly about iitspivot 20. The parts are so constructed that the-dogis not lifted out of engagement with the knock-off lever until after the shipper has been moved; the releasing thus occurring subsequent to the knockoff movement-proper. a After the connectionshave been'r'eleased, as just described, they'occupy the positions shown by 3 and 45 It will be apparent that the lever' I4 is free to be moved independentlyof the other parts (exce'ptior' the light holding spring 24) and'the shipper can 'accordingly be moved all thewa'y on even though the dog and slide have not returnedjrearwardly to 160m running position. Such a' con'str uction eliminates the necessity for theawkwardf dangerous method of manipulating the shipper above mentioned, and also permits the brake and clutch or the equivalent (not shown) to be set so-as to be effective when the shipper is close to 'its on position rather than nearits off position. This latter feature permitsthethrow o'fthe shipper to'be reduced and also results iri'a quicker stopfrom any of the stop motions'with whichthe loom may be equipped.

There is also provided means forautomatically restoring the connection between the knock-off lever and the member l6 subsequent to the restarting of the loom. Aspring 25 is fixed to the pivot 20 and bears against the dog IS in such manner as to bias the latter downwardly. When the loomis first started the shipper moves the knck-off lever from the position of Figs. 3 and 4 to the position of Figs. land 2, leaving the other parts in the stopping position .of Figs. '3 and 4. Afterthe loom-has runabout one pick the filling fork slide Sand member I6 return-rearwardly in the conventional manner, thereby moving the dog I9 rearwardly. Thereupon, the spring 25 upon movement of said slide, means operable to -'.disconnect: said member from said lever subsequent to .each stopping movement thereof, and

means for restoring ,said connection subsequent to the restartingof the loom.

2. In a loom stop motion, a shipper knock-oil? levenaside filling fork and slide, a member positively, movable by said slide upon filling failure, a dogmounted for movement with said member,

said dogbeingnor'maily' engaged withsaid lever for: moving ..the latter upon movement of said slide; sandmeansgoperablecsubsequent to each knock-off movement of said lever for disengaging said dogther'efrom; 3'.iln-z.a loomstop. motion, a shipper knock-oi! lever, a:side.'filling fork and slide, a member positivelyxxmovable. by said slide upon filling failure,'.a dog mounted onssaidmember for'move ment-therewith andrelative thereto, saidudog being normally engaged with said lever and openablewhen moving with-said member to positively move said lever to knock-off position, and cam means operable to move said dog relative to said' me'mber out ofe'ngagement with said lever subsequent to each knock-off movement ofthelatter. a

4. In a loom 'stop motion, a shipper 'knock-ofif lever,a side filling fork and slide, amember positively: movable by said slide" upon filling failure, a sdogpivoted to 'said member for movement therewith and relative"thereto',"said doghaving a shoulder engaging said'lever whereby movement of said-member moves said'leverto knockoffposition; cam-(means for pivoting said'dog out of engagement with saidleversubsequent to .each' 'knock' oif movement -01 the latte'n'and means for returning said dog into engagement with said lever= subsequent to the restarting o! thelloom'. I??? I .1

In a-loom stopflmotion,"a shipper knock-off lever, a sideifllling fork and slide, a member positively movable by said slide "upon filling failure, a dog mounted for movement with and relative to said member, said dog being no'rm'ally engaged with 's'ai'dlever for moving the latter to knock-off position upon J movement of said membenanda fixed cam part engagingsaid dog and causing the latter tomove relative to said member but of engagement with said levergsub- .a dog pivotedto. said member forv movement therewith and relative thereto, said .dog having .a shoulder engaging said lever whereby movement o'f'saidmember moves saidlever to knockoff position, and'a fixed part engaging said dog and causing thelatter to pivot on said member to move saidshoulder out of engagement withsaid lever at the end of each knock-off movement of the latter.

7. In a loom stop motion, loom controls ineluding a. shipper, a filling fork slide, means for positively moving said slide upon filling failure,

a member connected to and moving with said.

slide, a shipper knock-off lever having one end 5 thereof in engagement with said shipper, a dog movable with said member and engaging the

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