US1990730A - Stop motion for combers and the like - Google Patents

Description

Feb. 12, 1935., J, E 1,990,730

STOP MOTION FOR CO MBERS AND THE LIKE Filed June 10, 1952 s Sfieets-Sheet 1 Feb. 12, 1935 J. FOSSTEL 3,990,713 STOP MOTION FOR COMBERS AND THE LIKE Filed June 10, 1932 3 Sheets-Sheet 2 Feb, 12, 1935. J, FQSSEL L$90fi30 STOP MOTION FOR COMBERS AND THE LIKE Filed June 10, 1952 5 SheetsSheet ,3

Patented Feb, 12, 1935 srormiorrloN non ooms-nns: AND-THE LIKE-1 Joseph-Tessie]; Grafton, Mass; assignor'to A1521; 7

ti'an' Machine Works,

Ltdz'; Boston; Massi, a"

corporation of -Massach'us8tts Application June: 10,1932SerialtNos616,424 SClaim'sr' (cumier! The. invention "has reference to stop: motions for-combers or1thelike v 'Inrtheaoperationofthe-comber the sliver after passingith'e: detaching rolls' passes through tlie 5 pan andvtrumpet, and thencerthrough a set'of calenderarolls with delivery on-to a sliver plate: In'scasewthe delivery :of the sliver through the calender-Tolls i'svnot norinal, as'when the sliver becomes: reduced in weightj the sliver willi; tend talacClil'hlllMe in -the pan as :Ethe machine icontinues torrunmand rollier i lap: around :the -:detach' ingot. ro1ls,:. oausi'ng: great inconvenience, to say nothingj'ot loss' 'of. material. Tli eili'ght weight sliver delivered. onto 1 the sliver plate will also have to bewdetached and thrown away. Io 'obViate these difliculties it becomes imperative that the machine? be: automatically. stoppedtimmediately upon? the .:running nofxany light 1 weight 7 sliver through the: calender rolls, J and thi's'xis th'e essential purposeofitheinvention; in other words; to: provide. a: stop motion that willimmediately; stop1theimachine=upon anyitendencyiof the sliver to run' through :the calendernrollsywhen' light in weight." "i 1 Aswillfpresently be explainedfthesinitiali miov ing-force for operatingthestop-mechanism wherr the sliver .runsslight =in weight'fthrou ghi tli'el cal' ender rolls is the dropping of thextop ioneofi these rolls. Inthis connection the us'eio m di nary smooth-faced rolls cannot wellr 'be emf ployed for the following reasonz In 'thefii'st plaee the-top roll must restfupon the sliver as it passes between the. rolls. The top roll niu'st be Zone ofi considerable weight in order to get suflicient fr ic tional grip. upon the'sliver to properly' 'draw it throughzthe:trumpet If the top roll bdwi con siderable weight :iit tendsto 1 flattentth'e sliver thereby leavingvery little opportunityfor the top roll toxdrop insufficient amount to'positiv'ely actuate astop mechanism: jNotionly thi's :but if the sliver be flattened by the topsrolllthe'result is that the: sliverrwill':be crusherribyi the actioni' tion when: the sliver runs lightfin: weightfbetweerr. 55 therroll's yandusthis underrconditions: where the;

topitroll is=resting witlritszfullweight'upon the sliver; at the sametime-providing; a construction iri' whichizthe calender rolls will firmly grip "the sliveriffo'r drawing'rit ithroughi the "trumpet, and will deliver; the sliver onto the sliver' plate-in a 5 propensoftiand:fluffystate;

Alfurthenobjectfofthe invention is to provide a stop? motion by-which the machine will-be" stopped;shouldabnormal conditions occur at "any oneiofaz-"seriesof points. The comber 'is custom- 10 arilyprovided -with a:- number of heads; each headnhaving its own set of ca-lenderrolls through whichaisliver isbeing'delivered. Sometimes the combers are"madewith independent sets ofheads oppositely larran'ged awitl'r'linesof calender rolls 15 locatedyat opposite-sides or i the rnachine; The object is to provide a=-st0p motion which will becQmes'OperatiVein icaseabnormali conditions 0ccur ats'any one set of *calenderrolls however. remotely theyimawbe locatedin-themachine. V

The invention :can' best 'be seen and; understood bysreferencekvto the :drawings where anembodiment thereofi-iis: shown; such portion of the ma chine only bEi-ngn'ShOWI-IuaS' isnecessary for -a. proper understandingwf the:= invention. 25

Figurerl 'isfafiview mainly imsideelevation of various operatingmartsw Fla is awsection' 'onthe iine22 of Fig.- 1. v I svaplarr of a: detailof "construction v ea-cross section Of-OIISvOf' thG sets of calender:- rolls and parts immediately adjacent thereto anda 5: is'= a-rside elevation-in fragmentary partof one of the calender'rolls-s 7 Referring;:tothedrawings: V r 1 :represents the frame: of thei-machineas the parts. thereof toccur=-inthe -drawingss 2 are the detaching-grous the pan 4 the trumpets,'5 and 6 thecalender rolls;;and- -'7 thesliver-plate; 8'is the SliVCI'iL, V

As-='the si lverrissuing f-romthe: trumpet passes betweensthe calender T011S3=th813013301l6= 5=of these rollsresting-uponthe sliver will :be' elevated there by lwitlrrelation to-the bottom roll; and this by thesthickness withe sliver;- Should the sliver lessen irr weight; the top roll no longer being supportedwbyeai-slivenof normalubody will dropand it iszthefldroppingmf this roll ads-previously explained whiclr is availed of as the initial-moving force for operating-the:stopmechanism; In-order that the top roll :under' such conditions r may have adrop ampleeto; positivelwoperate the stop; mechanism and tomeetall other conditions as previously referred-to;provision'ismade as'follows:

Eaclrzof zthesicalender ,rolls is a fluted roll; its

weight between the rolls.

surface being provided with interdental spaces 10 and between these spaces projections 11. The interdental spaces are much wider than the width of the projections and are made quite deep. They present rounding bottom faces 12 curved in cross section. The projections 11 present rounding ends 13 preferably of a curvature corresponding with the curvature presented by the bottom faces 12 of the interdentalspaces. The sides of the projections are more or less flattened or even preferably slightly contracted with relation to their ends so that on bringing the rolls together with the projection on one roll centrally located within an adjacent interdental space on the other roll the sides of the projection will lie appreciably removed from the sides of the interdental space within which the projection is contained. The effect is that when the rolls are co-operating and the sliver is passing between the rolls the projections on one roll will enter and press the sliver into the interdental spaces on the other roll causing abrupt bends in the sliver passed between the rolls even though the sliver be of considerable body and weight thus enabling projections on the respective rolls to overlap and the body of the sliver to be gripped between the overlapping projections at a plurality of points. (See Fig. 5.) The top calender roll need only be of sufficient weight to cause the bends in the sliver. In consequence even though thetop roll be a relatively light roll it will be driven by the bottom roll, requiring no positive drive of its own and the two rolls will secure a firm grip upon the sliver for drawing it through the trumpet. In this connection it is preferred that the ends of the projections be slightly widened with slight undercuts 15 as these undercuts assist in getting a better grip on the sliver for drawing it through the trumpet. The bearing of the top roll against the sliver will at all times be over a relatively large surface or area and the abrupt bending of the sliver will also assist in the support of the top roll. In'consequence the sliver as it comes from the trumpet and passes between the rolls will not be flattened out but will remain' of considerable thickness when the sliver is running in normal weight, with the advantage not only that the sliver will be delivered onto the sliver plate in a soft and fluffy state but with the advantage also that the top roll will beheld so far elevated'by the sliver body that when the sliver becomes unduly diminished in weight the top roll will have ample distance to drop with relation to thebottom roll for operating the stop motion. 1

The bottom one of each set'of calender rolls is a driven roll mounted upon a shaft lfi which is turned through geared connections 17 in the operation of the machine. Where a series of aligned sets of calender rolls are employed all the bottom rolls are mounted upon the one shaft 16 and turned by this shaft. The top one of each set of calender rolls is mounted to turn upon a'-spin-' dle 18 the outer ends of which extend through the slotted ends of boxes 19 on'the frame of the machine. At one end the spindle is pivoted by a pin 20 to the slotted end of the box-within which it is contained. Arranged beneath the opposite end of the spindle is the turned end 21 of a finger 22 fixed to the arm 23. of a balanced lever 24 pivoted at the point 25 to a bracket 26 on the frame of the machine. The top one of each set of calender rolls will be maintained in a normal raised position with relation to its companion roll by the sliver when running with full normal With the top roll thus elevated and the lever 24 then occupying its normal balanced position, the turned end 21 of the finger borne by the lever will occupy a position immediately beneath the end of the spindle so that when the roll drops, as it will drop on any tendency of the sliver to rub light in weight, the dropping roll will through the spindle and finger turn the lever so that the outer end 27 of its arm 23 will be projected downwardly.

Arranged beneath the sliver plate parallel therewith and extending in the longitudinal direction thereof, is a movable rod 28 common to all the sets of calender rolls where a series of aligned set of rolls are employed. This rod extends through the bottom projecting ends 29 of the same brackets 26 as support the balanced levers, and the rod is arranged to be longitudinally movable back and forth thereon. Borne by this rod are stops 30. These stops are preferably adjustably secured to the rod each by a pin 31 extending through the slot 32 in the stop. The stops occupy a determinate relation to the ends 27 of the arms 23 of the balanced levers in the sense that, when the levers are occupying their normal balanced position and the sliver is running with full normal weight through the calender rolls, the ends 27 of the levers will not engage the stops as the rod 28 is moved longitudinally back and forth. In case, however, the end of any balanced lever drops, as itwill drop 'when the lever is turned by the operation of the finger when the sliver runs light in weight, then the end 27 of the lever will engage the adjacent stop. Like action will prevail for all the balanced levers and associated stops where several aligned sets of calender rolls are employed.

The rod 28 is longitudinally reciprocated during the operation of. the machine by reciprocatory movement imparted to a rod 34 which in its normal position lies alongside the end of the rod 28 parallel thereto. The rod 34 is provided at its inner end with an upturned forward extension 35 bent to pass around a pin 36 on the side of the rod 28, and presenting an inclined inner edge 37 in that portion thereof lying between the pin and the main body of the rod. With the rods 28 and 34 thus connected, both rods will be moved back and forth as reciprocatory movement is imparted to the rod 34. If, however, the rod 28 is stopped, as by engagement of the end 27 to any of the balanced levers 24 with any of the stops 30 on the rod 28, with the rod 34 then continuing to reciprocate, thereupon the rod 34 will be lifted as the inclined edge 37 on the end of the rod -34 rides over the pin on the rod 28. The rod 34 ,is reciprocated during the operation of the machine by motion applied to a gear 38in mesh with'a gear 39 mounted upon a shaft 40. Fixed to the same shaft is a cam 41 arranged to turn within a collar 42 on the end of the rod 34. As the cam is turned by the operation of the gears reciprocatory movement will be imparted to the rod 34.

Arranged above the rod 34, preferably at the top of the machine, is a shipper rod 45 for throwing the power on or off. This rod is movable lengthwise within supports 46 connected with the frame of the machine. Associated with this rod and arranged in parallel relation thereto is a rod 47, the two rods being connected by a link 48 to be movable in unison. The rod 47 passes through a post 49 fixed to the frame of the machine and arranged upon the rod 47 between the link 48 and the side of the post is a coiled spring 50. This spring normally, unless restrained,

, anism---interposd between it and th throws the shipp'er rod-- into-'-disengaging-position for shuttingloff thepowerythe 'spring being-com pressed as the shipper rod 'reve'rs ely rn oved nto an engagingposition for tl i rowiirig on -the power. The shipper rod i's maintai-ned in an engagingapost ticn and th'e spririg ED -under compression by a latch bar -'5 l securedb'y a 'pivot -52f'to tlie 'end' of the'li nk eams- 11mm,; armer-a notch 53 arranged to engage an edge- 54 on'the-posti On releasing the latch bar from engagement with the post by lift'ing the endsofi the bar-g-the shipper ba-r will "be throwniinto a disengaging position for shutting offa the power y the compr-essedspring The latch bar is lifted for releasing it -b y- 1118011 row-34,1 the latch bar being li f t'ed as-thezro d iie lifted: Th'is mechanismcompris'esa shaft 555w nturnswitns in h'angers 56 onthe frame of tlreimachinea The shaft= 55 4s h'oi iaontally arranged to turn within a plane just above the horizontal plane occupied by the rod 34. At its outer end the shaft 55 bears a crank 57 connecting with a rod 58 which extends upwardly through a guide 59 on the post 49 and bears upon its top end above the guide a finger 60 which normally occupies a position just beneath the end of the latch bar 51. At its inner end the rod 55 bears a finger 61 angularly downturned with the end of the finger occupying a position just above the rod 34 when this rod'is occupying its normal position. The immediate effect of the mechanism is that when the rod 34 is lifted its bearing against the finger 61 will operate toturn the shaft 55 and this, through the crank 57, will lift the rod 58 to disengage the latch bar 51 from the post for shutting off the power.

The general operation is as follows: It will be assumed that the shipper rod has been moved to an engaging position, being held by the latch bar 51, and that the machine is in operation. In case the sliver should run light in weight through any one of the sets of calender rolls, thereupon the top roll of the particular set will drop. The

dropping of this roll will, through the adjacent finger 22 and balanced lever 23, operate to throw the outer end 27 of this lever into engagement with the adjacent stop 30 on the rod 28, stopping the movement of this rod which prior to such stoppage was reciprocating. The rod 34 will con tinue to reciprocate and thereupon the rod 34 will be lifted by engagement of its inclined edge 3'7 with the pin 36 on the rod 28. As the rod 34: is lifted, movement will be imparted through the connecting mechanism which'operates to raise the rod 58, thereby releasing the latch bar 51, whereupon the compressed spring will throw the shipper rod into a disengaging position shutting off the power and stopping the machine. It will be observed that the machine is stopped immediately upon the sliver rumiing light in weight for any oneof the sets of calender rolls, and this before the sliver has an opportunity to accumulate in the pan lying back of such set of rolls, and Icefore the sliver of lessened weight has had opportunity to travel for any appreciable distance over the sliver plate.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States:-- V

1. In a stop motion for combers and the like, the combination comprising a set of calender rolls throughwhich the sliver passes, means for mounting the top roll whereby it will drop when the sliver runs light in weight between said rolls and including in part a spindle for said top roll,

a reciprocable member, means for reciprocating said member, a) stop borne by said reciprocating member; a lev'er mounted to normally occupy an outo the wayposition-With relation to said step, a fihgerborne b'y saidlever -and havingan en'd turned toextend beneath said spindle on the top roll' whereby-the lever will be' turned to engage said step on the dropping of said top roll, mechanisnr -for stopping the machine; and means whereby-saidfmechanisrn will be "operated onthe stopp' g ofsaid'membe rg 1 2 n] [stoption -for combers and the like,-a set) of 'calenderrolls -between which the sliver passes; to be fed by said rolls; each -of said rolls having-arr exterior-surface provided with deep interdental spaces with projections interposed between saidgspaces, said spaces-being consider ablywider *than saidiprojectionssothat on bringing the -rolls'dnto mesh with -a projectiongon 'one roll centrally located-within an-adjacent interdental space on the other roll the sides of the projection will lie appreciably removed from the sides of the interdental space within which'the projection is contained whereby abrupt bends will be formed in the sliver passed between the rolls thus enabling projections on said respective rolls to overlap and the body of the sliver to be gripped between said overlapping projections, and means for mounting one of said rolls whereby it will have relative movement to the other roll when the sliver between said rolls varies in weight.

3. In a stop motion for combers and the like, a set of calender rolls between which the sliver passes to be fed by said rolls, each of said rolls having an exterior surface provided with deep interdental spaces with projections interposed between said spaces, said spaces being considerably wider than said projections and presenting rounding bottom faces, said projections presenting rounding ends with relatively flattened sides so that on bringing the rolls into mesh with a projection on one roll centrally located within an adjacent interdental space on the other roll the sides of the projection will lie appreciably removed from the sides of the interdental space within which the projection is contained whereby abrupt bends willbe formed in the sliver passed between the'rolls thus enablingprojections on said respective rolls to overlap and the body of the sliver to be gripped between said overlapping projections and means for mounting one of said rolls whereby it will move relatively to the other roll when the sliver between said rolls varies in weight. 7

4. In a stop motion for combers and the like having mechanism for stopping the machine, a set of calender rolls between which the sliver passes to be fed by said rolls, each of said rolls having an exterior surface provided with deep interdental spaces with projections interposed between said spaces, said spaces being considerably wider than said projections so that on bringing. the rolls into mesh with a projection on one roll centrally located within an adjacent interdental space on the other roll the sides of the projection will lie appreciably removed from the sides of the interdental space within which the projection is contained whereby abrupt bends will be formed in the sliver passed between the rolls thus enabling projections on said, respective rolls to overlapand the body of the sliver to be gripped between said overlapping projections, a spindle on which said top roll is mounted to turn, means for pivotally supporting said spindle at one end thereof whereby the top roll may move relatively to the bottom roll when the sliver between said rolls varies in weight, and mechanism in opera tive engagement with the free end of said spindle and actuated thereby for operating said mechanism for stopping the machine inresponse to relative movement of said rolls of a predetermined amount.

5. In a stop motion for combers and the like having mechanism for stopping the machine, a set of calender rolls between which the sliver passes to be fed by said rolls, each of said rolls having an exterior surface provided with deep interdental spaces with projections interposed between said spaces, said spaces being considerably wider than said projections and presenting rounding bottom faces, said projections presenting rounding ends with relatively flattened sides so that on bringing the rolls into mesh with a projection on one roll centrally located within an adjacent interdental space on the other roll the sides of the projection will lie appreciably removed from the sides of the interdental space within which the projection is contained whereby abrupt bends will be formed in the sliver passed between the rolls thus enabling projections on said respective rolls to overlap and the body of the sliver to be gripped between said overlapping projections, a spindle on which said top roll is mounted to turn, means for pivotally supporting said spindle at one end thereof whereby the top roll may move relatively to the bottom roll when the sliver between said rolls varies in weight, and mechanism in operative engagement with-the free end of said spindle and actuated thereby for operating said mechanism for stopping the machine in response to relative movement of said rolls of-a predetermined amount. JOSEPH FOSSEL.

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