US1445629A

US1445629A - Harness stop motion

Info

Publication number: US1445629A
Application number: US542600A
Authority: US
Inventors: Lavoie Joseph
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1922-03-10
Filing date: 1922-03-10
Publication date: 1923-02-20
Anticipated expiration: 1940-02-20

Description

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11,445,629 J. LAVOIE HARNESS STOP MOTION Filed Mar'. lO, 2 sheets-sheet l Feb. 20, 1123. 1544,29 J. LAVQIE HARNESS STOP MOTION Fi] ed Mar. l0', 1922 2 sheets-sheet 2 Invent/vof:

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JDSEPH IAA'VOIE, 0E MANCHESTERJ NEVI HAMPSHIRE, ASSGNOE T0 DRAPER UORPO- i RATIOE', 0E ECOPEDALE, MASSACHUSETTS, ACGRPUBATION OE MAINE.

nnnnnsss'ror ivrorron.

.application sied nai-ch 1c, issie. serial no. Maese.

To all. wim/m, t may concern:

Be it known that l, dossier-r Lavoin, a subject oi' King George V 'of Great Britain, re: "ig at Manchester', in the county of Hillsboro andtate oi" New Hampshire,

have invented an lmprovement in Harness iitop ltlotions, of which the `following; dcscription, :in connection with the accompany-- ingr rlrawimrs, is a specification, like characters on the drawings representinp,a like parts. y i i lhis invention relates to looms, and more particularly to the harness stop mechanisn'i by which the loom is brought to rest when a luufncfls :tra-ine connection becomes broken ortco slack tor weaving` purposes.

During the operation of weaving, the harness trames which control the warp tl. eads are raised and lowered ina prede tei-mined sequence to, form the successive sheds through which the yshuttle is passed to lay the iillingr or" wett thread. Should one or more of the connections between the harness trames and the associated devices become broken, it is evident the released.v

harness traine will no longer respond to the `predetermined sequence of shed formation and improper weaving will result.

The object of the present invention is to provide the harness stop mechanism which has become effective to stop `the loom when an upper or a lower connection to any harnessbecomes broken or too slack. rThe present invention therefore, comprises a stoiiping mechanism to brine; the loom to rest, and two `trains of mechanism acting therethrough, to cause the stop mechanism to operate and stop the loom when a heddle :trame connection, either above or below, becomes broken or unduly slaclr. Each of the trainso'l mechanism act through `the same stoppingr mechanism, and each of said trains of mechanism contains `novel features.

ln the drawingsIM Figure l is a perspective view of portions o-F the loom with parts broken away and showing' more particularly the acting therethrough to stop the loom;

y Fig. 2 is a front view ot' sulicient of the loom containing,the` present invention to make clear the relation and association oi1 liig. 3 is afforeandaft section of the loom y atthe lower part thereof, Showing more par.

` t stopping` mechanism and the two trains of mechanism,

ticularly the means ltor depressing orpulliner down the harness frames in the formation of the sheds. y, The` ,general construction of the loom, its operating mechanism for ,weaving cloth, and the various accessories utilized in this connection are or may he of old and usual construction and need not therefore be herein shown and described.

rllhe loom frame l is of usual construction, andis provided with the overheadsupporting' member or arch 2. Any number of heddle `trames may be employed in accord` ance with the design oit the cloth to he woven, and in the presentfinstanee four of such iframes are shown. Each harness frame is supported hy tensioned suspending connec tions, and is lowered in accordance with the design of the cloth to he woven by suitable `means acting upon the lower connections with the harness trames for lowering them in predetermined order in forming the sheds.

Each harness frame 3 carries a series of heddles L 'provided with the usual eyes through which the warp threads are passed singly in a desired order. Each` harness trarne has the tensioned suspending` connections 5 which pass upwardly about the guide rolls 6 mounted for free rotative movement upon their respective brackets 7 and 8 car ried by the loom arch, and each oi the connections 5 has associated therewith a springr 9, two ot whichare shown in ltig; 2, it beine; understood that each harness :frame has a spring `associated with its overhead suspending,r means or straps.

In the present instance of the invention,

the bracket 6 is turned laterally at its upper portion 9 and carries the 1rnlide sheaves l about which pass portions ll oi the overhead connection with the harness frames. Each connection or strap ll has attached thereto oneend of a spring 9, the other end of which is provided with a slotted guide 12, into the slot of which extends a guide lug 13 projecting 'from the upward eXtension of the bracket 7, the construction being such that the tendency of the springs 9 1s to lift or raise the associated harness frame.:

'Secured cto and extendingr downwardly 'from each `or" the harness frames are the lower connections 14, Fig. 2,1which in the present instance are shown as straps, the lower ends ofwhich carry the usual eyes l for engagement with the toothed end portion 16 of the shedding,- levers 17, one of such levers beine` provided for each of the connections 14 of each harness frame.

As shownin Fig. 3, the levers 17 are pivotally mounted on the loom frame or a suitable bracket secured thereto at 18, and each carries a roll 19 to be enga-ged by the sheding mechanism which, in the present instance, is in the form et cams 2O secured to the cam shaft. 21 carried by the loom trame as usual. From the construction thus tar described, it will bev apparent that the springs 9 ot the overhead connections with the harness frames are under tension which tends to li'liter the harness frames and hold the rollers i9 et the shedding levers against their respective cams, so that during the operation of the loom, the harness trames are lowered against the tension oi the springs 9 in the formation ot the shed,

liounted on the loom frame or as shown, upon the arch 2 at 22, are a series of actuators 23, one t'or each oit the overhead connec'tions. and each actuator 23 is joined to its associated overhead connection by a link, cord, or other suitable means 24. Each ot the actuators 23, of which there are four in the present insta-nce, is normally under the influence ot a light spring 25, one end oi' which is connected to one ol the actuators and the other to a xed arm 26, as indicated in Fig. l; and since the springs 25 are Wea-ker than the tensioned suspending swings 9 ot the overhead connections with the harness frames, it follows that the guides 12 Will normally be held to the right, 2, with the guide lugs 13 engaged with the left end of the slot, which thus constitutes a stop or holding` means.

Pivotally supported adjacent the actu,- ators 23 is a. single indica-ting member 27', Fig. l', the upper end portion ot which is carrie-d laterally at 2S. and is normalljY held against the actuators 23 by a spring 29, one end of which is connected at to a holding iinger or lug 31, and the other end ot which connected at 32 to the laterally-extendingr arm 38 of vthe indicating` member, so that j under normal conditions the spring 29 holds the indicating member 27 in its normal position resting;r against the outer edge portions of the actuators 23, and the relation of the

springs

25 and 29 is such that the parts will assume and remain in the position indicated in Figs. l and 2 under normal weaving conditions. or if desired, a stop pin Se may be provided for limiting the action of the spring'29, Figs. l and 2.

.The mechanism thus fark described constitutes one train of mechanism for causing,r the stopping mechanism to operate to stop the loom when one or more of the overhead connections with the harness frames become broken or too slack. The stopping mechanism may be variously contrived, and

heisses as shown in the present instance ol the inY vention comprises a. downwardly-extending link 35 pivotally connected. to the arm :Sii of the indicator and at its lower end joined to a pivoted dog 36 pivotally supported at 37 on the swinging link 3S which itsell pivotally mounted at 39 to the loom Frame. The dog 36 has a .tan-tail end flo which is normall;v below the path of movement ol a` bunter `lil adjustably mounted on lhe l:i 42. in the present instance the hunter All is `termed as a hu; adjustahh secured io (he la \v h v a bolt -l-) which passes through an opening` ist in the bracket carried hy the lajr.

rlhe swinging; link 3d is connected lo the shipper mechanism so that should thc dof,r 36 be held rearwardlj.Y or to the lcl't. hin'. i.. the shipper mechanism would he aclnalcd to stop the loom. ln the present instance the swinging` link 3S carries the Yoke portion yl' to which is pirotalliv connected the trans mitter 46. The front end portion olE the transmitter i6 has a slotted link Ali', through the slot fig oi`Y which extends a pin flil secured to the shipper lever Till. The. shipper lcrcr 3!) is ol, thc usual construction. and when moved to the lett, Fig. l. causes die loom to stop through well-known means which is not necessary to be described herein, because they are well understood. and the details thereoiC torni no essential. imi-t ol the present invention. rlShe slot .478 is provided in the link /l-T to enable the shipper lever to be moved to stopping position by hand or otherwise than hy one ot' the trains of nicchanisin connected to or operated through the harness Nframes.

Freni the construction thus tar described it will be apparent that should; one olE `lhc oif'erhead connections with any harness trame break. the tcnsioncd spring 9 associated with that l'ramc will he released. and` through its connection 2li with onc oll lhc actuators. the ,duide l2 will more lo thc ,lel't the length o'll thc slot therein under thc ini-- pulse of the spring,r 25 which controls` thc associated actuator 23. Movement to thc left ot the actuator however. will at once cause the indicator 27 to more cmilraclochA wise, viewing Figs. l and 2. lherelrvv turnm ing the dog' fifi to present its fantail end portion t0 in the path ol the hunter Alil. which on rearward movement o'l` the lay, will eiect loom stoppage through the shipper.

lt 'frequently happens that one of the lower or under connections with a heddle trame becomes broken or detached vl'rom its actuator or lever 17, and. the present invention provides that in such case. also. the stopping` mechanism shall he rendered et feet-ive to cause loom stoppage.

in the present instance the invention provides the harness teeler mechanism. and as shown b v Figs. 1 and 2, such -teelcr mechanism includes two teelers, one located over W. in

.l l ll i the heddle trames naam/see atfeach end thereoit7 and between ythe harness .'eelers andthe stop-` pingmechanism` is `a trainot mechanism to ycause the stopping mechanism to stop the i loom when one oi the under connections to a heddle tramebecomes broken or too "slack and the released heddle :trame rises under the impulse'ot the tensioned suspending connection.

` lllach feeler as: shown, compris :i hanger 5l, Figi l, the lovver portion 52 oi" which is extended tore-andai`t ot' the loom or substantiallLi/fY at right angles to the plantx ot "movement of the harnessframed and directly above the `plurality ot harness iframes. The upper end portion ot thehannjer 5l ot each harness teeler is adpistably connected at 53 to oneotthe arms or levers 54.55, each et which is connected through the nidcator i the harness teelers be of one i impart to the indicator 2 to the stoppingn'ieehanisin tor effecting loom stoppage when either oit `the feelers is raised "by one ot the harness frames,`tlie under become broken or too slack.

The arm 54C ispreierably constituted as aV leverpivoted at G to a support on the loom arch and has a hooked end. portion 57 which overhangs and rests `upon the arm of the` indicaton The Weight ofthe overhangingr arm 57 is suthcient ordinarily to hold the `parts in the position indicated.` The arm is formed as a bell crank pivotally sup ported at 58 to a bracket 5S secured to the loom archQ, and the upwardly-entending portion 59 is connected ath() to a link 6l the side oit' the indicator?, l. From the construction described it will be apparent thatshould either one oi? raised due to unusual trames, such as Would occur b v the breakage ot one ot the lower or under connectIons. the associatedarm 541er 55 will be turned upon f its pivotal supportand through the connections With the indicator cause movement thereof to position `the dogg* for engage ment by its tan-tail end 4t() with the bunter il ofthe as the latter pgoeswback, and

thereby act through the st'oppingmechansin to stop the loom. i

.lt may happen that the npivardrmoveinent otftheharnesstrames` sulhcientlv impulsive and forceful that it is liable to 7 undue movement so that the "present invention contemplates the use ot a stop 63. Fig; l" against which Mll the arm 33 of theindicator n'iavstrike tobe `limited in its movement under the actuation o'tone ot the harnessleelers. 653` acts as a determinatorior positioning; the tan-tail endet the dog t() in the path of movement ot the `bunter 41 when either train of mechanism actuated bythe breaking Thus the stop l or an upper orlower harness connection is i operated,I l i harness connection ot which` has "the other for stopping` the loom when In cassone ofv the upper harness connections is broken, `the tensioninp;` means or spring 9 associated therewith will be rs-)leased and through the actuator and determination act as a train oiE mechanism upon the loom stopping` .mechanism to bring;` the loom to rest. Likewise, should one ot `the lower con- :sections to any harness trame become broken or too slack, the released harness trame or one end ot it will `at once respond to the li l'tini;r tension oil" the suspendingi connection and rise into engagement with. one ot the liarness 'feelers and :litt it so that 'it will act through its train of mechanism to cause the stopping mechanism to effect loom st-opi'iage What is claimed is 1 l.. ln a loom, the con'll'iination ot a plural itvot harness iframes each having spring tensioned suspending' connections normally tending to raise the harness trame7 lower connections with each harness ltrame for lowering the harness :trames in forming the shed loom stopping mechanism, and two devices cooperatingr with each harness trame, one tor causing the stoppingmechanisin to stop the loom when the tension of the suspending connection with a harness trame is released by breakage or slackness ot one ot said suspending` connections7 and the other tor causing the stop mechanism to stop the loom when one et the lower connections breaks or becomes too slack and the har-` ness trame rises under the action of the tensioned suspending` means.

2. ln a loom, the combination oi a plurality of harness frames each having; spring tensione(L suspending connections norniallqT tending to raise the harness trameV lower connections with each harness frame ,tor low` ering the harness trames informing' the shed, loom stopping mechanism., and two devices associated vvith a harnes tramo ind connected tothe stopping mechanisme, one for stopping the loom when a suspending connection breaks orbocomes too slack and one oit the lower conneetionsbreaks or becomes too slack. i i

lin a loom, the combination o lf a plurality of harness iframes each havinpj tensioncd suspending; connections tending to raise the harness traina lower connections therewith ior lowering the harness trames in formino theshedq and two trains oi" mechanism each cooperatingwvith a harness dered operative to the susiliiendinpj connections breaks or become tooxslack and the connected .harness t ame drops and theother rendered operative to stop` the `loom `When a` lower connection breaks or beconiestoo slack `and the harness rises.

4.-. ln a loom9 the combination ot a plural ity of harness frames each having tensioned suspending connections tending` to raise it,

trame9 one renstop the loowm when one of effective to stop the loom, when ene olif the suspending' connections breaks, and the other of which is made effective to stop the loom when one of the lower connections breaks and either end of the released harness 'frame is raised.

5. .ln a loom, the combination oi'f two or more harness 'trames each having;` suspending straps normally under tension tendine` to litt the connected harness iframe, lower straps connected to each harness frame, means acting through the lower straps `.for lowering 'the harness trames in forming the shed, loom stopping?,` mechanism, and two devices cooperating,` with each harness Jrame to cause loom stoppage when there is a break in the heddle 'trame strap either above or below the harness.

6. ln a loom, the combination ot a plurality of harness 'trames each having' susI pending means normally under tension tending to litt the connected harness frame, means for lowering` the harness frames in opposition to the tensioned suspending means in forming the shed, loom stopping mechanism, and two devices associated with each of the harness Ytrames and connected to the stopping` mechanism to stop the loom either when a harness trame drops due to breakage or slackness ot its suspending means, and another means iior causing,- the stopping mechanism to stop the loom when a harness lowering; means breaks or becomes too slack or rises due to a defect in the harness lowering; means.

7. In a loom, the coml -nation oi a plurality of harness frames each having separately tensioned suspending connections tending to raise it, lower connections with each harness, means acting on the lower connections for lowering the harness iframes in forming the shed, loom stoppingmechanism, and a device extending above the harness trames for causing the stopping mechanism to stop the loom when one of the lower connections breaks or becomes too slack and one of the harness trames is raised.

8. ln a loom` the combination of a plurality of harness frames each having separately tensioned suspending connections tending to raise it, lower', connections with each harness, means acting on the lower connections for lowering the harness 'frames in forming the shed, loom stopping mechanism, a harness feeler located above the harness and moved thereby when one of the lower connections breaks or becomes too slack and the released harness lrame rises.

9. In a loom, the combination oit a plurality oit harness frames each having;` tcnsioncd suspending connections tending io raise it. lower connections, means acting on the lower connections tor lowering thc harness frames in forming the shed, a harness 'lceler which extends over the plurality of harness 'f2-anne at each end thereof that either end ol' any harness trame may enga e and move one of the eelers when either end of' a harness 'frame is raised due to lueakanje ol a lower connection, and stopping); mechanism ina-.lc effective to stop the loom when either ha rness iieeler is raised.

l0, ln loom,the c'oinhimilion ol' u plural-- ity ol' harness frames each having); tensioned suspending connections tending to raise it, lower connections, means acting on the lower connections Ylor loweringv the harness iti-ames in 'torminrg the shed. a harness 'leeler sup ported over the tops ot the series` ol` hanA nesscs, a loom stopping); mechanism. :unl connections between. the loom stfmpingr mechanism and the two harness l'celors to cause the stopping;r vmechanism to stop he loom when a harness 'leeler is moved by a harness whose lower connection has bccol'ne broken or too slack.

11. ln a loom, the combinatifm of' a plurality of harness frames. each having an over head tensioned suspending connection, loom stoppiim,- mechanism, separato spring at tuated means connected to each of the lensioned suspending` means and released upon breakage or undue slaclmess ol the. suspending); means 'for movement under its spriufr` actuation, a single member common to all of said separa-te spring actuated means and movable by any one ot them when the ten sioned suspending connection breaks or he comes too slaclvr to cause the .stopping uuu-lla nism to stop the loom.

12. In a loom, the combination ofi :i plurality of harness trames. each having an overhead tensioned suspending connection` loom stopping mechanism, separate spi-infr actuated means connected to each oi the tensioned suspendingr means and released upon breakage or undue slackness o1 the suspending means for movement under its spring; actuation.y a single spring-held member common to all of' said separate spring-actuated means and movable by any one ol them when the tensioned suspending connection breaks or becomes too slack to cause the stopping mechanism to slop the loom.

In testimony whereof, l. have signed my name to this specification.

JOSEPH LAVTTC.

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