US1811404A - Knock-off mechanism for slubbers and roving frames - Google Patents

Description

June 23, 1931. J. c. NUNNALLY 1,811,404

KNOCK-OFF MECHANISM FOR SLUBBERS AND ROVING FRAMES Filed March 20. 1930 3 Sheets-Sheet l June 23, 1931. .1. c. NUNNALLY 1,811,404

KNOCK-OFF MECHANISM FOR SLUBBERS AND ROVING FRAMES Filed March 20, 1930 3 Sheets-Sheet 2 June 23, 1931. Q NUNNALLY 1,811,404

KNOCK-OFF MECHANISM FOR SLUBBERS AND ROVING FRAMES Filed March 20, 1950 2g Sheets-Sheet 3 HHIHIIIHHIHIIIIHHI?? H IH l :E

HIIHHIII lll Patented June 23, 1931 Y UNITED S-"lUf-i'TESV PATENT OFFICE l JAMEIS Iil'UNNALLY,'OF GREER, SCUTI- CAROLINA KNCK-OIF MC'HANISM FOR SL'UBIBERS AND ROVING FRAMES l Application led March 20, 1930. Serial No. 437,408.

` This invention relates to stop motions or knocking oilq and eliminate any attention knock-eliv motions of, slubbers or kindred by the operator. y v

machines, as for instance roving frames, A further object is to provide a construcly frames and the like, and particularly tion of this character which will not require e to certain improvements upon the construc- Watching, but merely require thatthe atten- 50 tion" illustrated in my application for patent dant shall dol when the device knocks off.

filed February 23,1 1929, Serial No. 342,142. Other objects Will appear in the course As was stated in this prior application, of the following description.

at the present, asl far` as known to me, all My invention is illustrated in the accomroving fr almes are doffed by the rackV knockpanying drawings, Whereinr 55 off motion which is shifted or changed each Figure 1 is a rear elevation ofa portion time that the ten-sionl gear is adjusted and, of a slubber or roving frame with my knocktherefore', when the yarn orroving gets slack oil mechanism applied thereto; y in damp Weather or tightens up in dry Figure 2 is an elevation of the knock-of Weather, theY operative has to change the lever Support, the' oscillating arm beingin 60 Vtension and these adjustments change the section; v l

rack-knockeoi' motion. vrThis change in the Figure 3l is a section on the line 3 3 rack knock-'oii motion Will aiect the yard- Of Figure 2; age"l oit' stock on the bobbins, making it im- F ignre 4 is an elevation of the hook sup- 0 possible t'o keep the @reeling all run out port, the bobbin rail being shown in sec- 65 together, thus causing a- Waste of stock at OII.;

reach creeling. v Figure 5 is a section on the line 5 5 of The general object of the present inven- Figure 4;

tio@ is thesme as: in lily prior application Figure 6 1S El Sid@ elQValOIl Of lille WOIU.

y 25 fOr Paten@ that is, tov avoid thel diliiculties `Wheel and Worm, the crank arm being shown 70 above. referred to andL cause the knock-oli in SCtOn. e

to occur. by the use of mechanism dri-ven dil'gure 7 is a Afragmentary rear elevation reetly from theeontact shatter the slubber, as in Figure l, but Showing the Parts in which contact shaft inv all machines known POShl'lOP .b @fOlG @he M Cl has been shifted to meis driven' independently of the tension t0 mltml 1905551011 H1 Ol'del t0 doll; 75 motionv andZ thus doingawaywith the diiii- Flgm'e 8 15.21 fragmentary 1'1931 @levltlon Cteg due, to u Changing Gf be 1m odoff showing certain of the parts Wnenthe latch mechanism each time that the ten-Sion vis has been fully retracted and the knock-oi changed and? thus giving even yardage on rocl 11,111), Sllltefl' I 1 i 80 so V`V y-'fi ,y -v `1 L c1 i 1 leere tultluelfpegrte a slubber frame, as Will be necessary for an d, b e f l t. ,f ,f t1. ,A t. t understanding of my invention. mme num er 0 revo u lons fo le con a@ In these drawings, 10 deslgnates the usual I Y ,Y y p v. troll beam andy 11 the sampsons supporting 85 A fufthef, and WOT? Patcula' Oblect 0f the same. The shipper rod is designated 12 theprSen-t' IIIVGDIOH 1S t0 PTOVlClB IIGChand is operatively connected toy a knock-off nism-` which will not require the services of arm or lever 13 of the usual character pivotan opera-tor in order to secureuthe knock-olf ed at 14 upon the roll beam lOand extended a L5 oi' the slubber, but Wil-l ilo the Work of llongitudinally as at 15 and tlm/iiiI downward, 9

this portion of the arm being of such weight that as soon as this end of the arm is unsupported, it will drop and knock off the'frame. The top cone is designated 16 and is driven as usual from twist gear4 train, the belt 18 being shiftable overthe faces of the cones 16 and 17 to change the speed by means of the usual rack 19 actuated in the usual manner by mechanism which it is not necessary to show as it is well known. The contact shaft 2O as usual carries the mutilated beveled gear wheel 21 engaging the beveled gear wheel 22'on top cone shaft 23 sothat thus the Contact shaft receives its motion from the top cone shaft which in turn re-v ceives its motion from the twist train driven 1n the usual manner. So farvI have describred elements which are commonly found in tion therewith is an extension shaft 24 carrypose will be now described.

ing at its upper end the beveled gear wheel 25,l and mounted in supportsn 26 is a 4shaft 27-carrying upon it the gear 25a and worm- 28. One of the supports 26 has a bracket 29 carrying the worm l-wheel 30. Loosely mounted upon the shaft 30fL of the worm wheel is the crank arm 31 having the crank pin 32. Carried by the pin 32 is the rod 33.

lOne wheel 30 is providedl with a laterally projecting pin 34. The crank arm 31 is disposed in the path of movement of this pin. The worm wheel 30 rotates in a 'counter-clockwise direction.

During the rotation of this worm wheel, the pin 34 will engage the arm 31, which is loose upon the shaft 30?, as before stated, when this arm 31 isin a depending position and will carry the arm 31 up in a counterclockwise direction -tov a position where the arm 31 extends upward. Upon a further movementof the wormA wheel, the ,arm 31 will be carried up beyond its vertical positionand will then ofits own weight swing downward van'd forward ina counter-clockwise direction of itself, and 'remain in this position until pin 34 has again picked it up. So far, I lhavefdescribed.the construction which-is shown in fmy pending application for patent, Serial No. 342,142,filed February 23, 1929, to which reference has been previouslymade. i

rIn this prior application, I showed a depending swinging latch which was, disposed beneath theknock-off lever l13 and supported the same, this latch beingv shifted laterally and-out of itssupporting position by the rod 33. The improved mechanism for this pur- Pivotally mounted upon thev rail 10 at 35 i jisav depending support designated 'generally 36 designed to normally support'the weighted end of the lever 13.v This support 36 extends straight downward from the pivot 35,

Vthen extends at right angles orrearward toat 38, the lower portion of this portion 38 having its outerl 'face slightly curved at 37 a. The portion 38 is formed to provide a shoulder 39 vand toprovide a latch receiving recess or chamber 40 below this shoulder. Disposed within this chamber is a latch 41 which is mounted upon a transverse shaft 42. This shaft extends laterally outward toward the front of the machine and carries upon its end the weighted arm 43. c

This arm at one vend is enlarged so as to provide a weight 44 and the other end of the arm is formed with a pivotal section 45 pivoted at 46. The rear end of the section 46 is forked to `embrace anv ear on the extremity of the main section of the arm 43 and the confronting end faces of the main section 43 ofthe pivoted section 44 are so formed as is obvious from Figure 3, that while the section 45 ymay readily swing upward, it cannot swing downward beyond a position of alinement with the-main section 43. The rod 33 is formed at its'extremitywith a somewhat elongated loop'or eye 47-which surrounds and loosely embraces the ,shaft 42 so that the rod 33 has longitudinal play before striking the pin 42 which constitutes the-shaft upon which the arm-43V and the latch 41 are mounted.

Attached to the usual carriage rail 49 is anV angular member 48. This is `rigidly engaged with a .vertically extending plate 50 notched at its ends as at 50 to straddle and engage with a guide bar on the sampson post 11. The rail 49 is commonly found in slub- 'bers and supports all the bobbin bolsters on which the spindles or bobbins rotate'. These bolsters vary in number. from fifty-six to one hundred and seventy-six. This rail is traversed up and down by the usualilifting motion on the frame.

Mounted upon the plate 50 is an angular member 52, this angular member having a slot 53 through which'it-is bolted as at 54 to plate`50 The opposite end of this angu- .lar member carries a bolt 55 which passes through` a slot 56 in an extension piece 57 Ywhich at its upper end isformed with a hook v58. It is this hook that is adapted to engage over :the finger 45 at the extremity of the arm 43.

It will be obvious that this member composed ofthe sections 52 and 57 is adjustable. When the carriage'orrail 49 moves downward to permit the bobbins to be slots in the sections 52 and 57 permits the hook 58 to be shifted toward or from the rear of the slubber to make it properly en- Vlength of the slot in the eye 4'7.

gage with the knuckle end of the arm 43. The slot 56 is particularly designed tol make itV possible to adjust this hook 58 to lsuit the length of bobbins which may be 111/2, 91/2 andSl/Z' inches in length. In my prior con-- structiomd'escribed in my application, Serial No. 342,142, filed on the 23rd day of February,1929, the knock-offV occurred at the lower end of bobbins whe-re it was not possible to doif the frame as the operative had to run the fra-me half way of its traverse in order to dof-f. Now with my present construction, the knock-off lever drops on to the face off the latch at the change of traverse and holds the weight until half of the length of the bobbins has been made whereupon the latch is rotated out from beneath the knock-off arm 15 or lever, thus stopping the frame at theproper doifing place. of bobbin, making all-dofls the same.

Itf toA bev understood and as described in my prior application, that the contact shaft andi the bevelgear 25 will make a large number of revolutions before t-he worm gear 391wi-ll have` made one complete revolution. As the worm gear starts its revolutions at the.4 beginning of the bobbin lli'ng operation, the arm 31 will be in `a depending position, and Y when the' pin 34 strikes the arm 31 in the rotation of the worm Wheel, the arm 31 will be retracted or moved Vtoward the right in Figure 1 and thenafter the arm 31 has reached its hori- Zontal position and? is moving upward and laterally toward thev left, the rod 33- will be shifted forward.

p This forward movement of the rod 33will not affect Ytheswinging support 36 until the Y arm 33` has movedy a distance equal to the Generally speaking, when the worm wheel' 30 has made a Vcomplete revolution, the rod 33 will be forced` outward and the support 36 will lutions during the lling of the bobbins and before the dofting thereof, as for instance, seventy-twol half i revolutions. or thirty-six fullv revolutions for 11 x 51/2 slubbers while for ,intermediatev frames, the contact shaft vmakes seventy-twohalf revolutions or thirtysix complete revolutions to oney revolutionof the. worm gear 30.

he pin.34 actsito swing this armv 31 over "its center and at this time,.the end of the eye 47 strikes the pin 42 andA swings the supportI 36 just enoughto permit the lower end of the lever 13 tov drop from the shouider 39 upon-which the endA of-this-lever 13 initially rested on tothe upper face of the latch 41, as shown. in Figure 1.

The swinging of the supporting arm 36 toward the left in Figure 1 will swing the left hand end of the member into a position beneath the hook 53. Upon a downward movement of the hook 53 caused by the last downward movement of the rod, the arm 43 will be turned in a counter-clockwise direction which will turn the latch 41 in a counter-clockwise direction, releasing the lower end of the arm 13 and allowing` this arm, therefore, to drop the full distance necessary to knock oft1 the loom.

Then the frame is dotted, the heavy end 44 of the arm 43 swings the latch 41 back into position for the next doif. The purpose of the knuckle or pivoted section 45 is to prevent any trouble when the arm 13 makes the first drop from shoulder 39 on to the upper face of the latch 41. It is to be understood that the loop 47 at the extremity of the rodv 33 is to permit the arm 31 to make one complete revolution with the worm gear and yet only move the dependingr pivoted supporting arm 36 about threeeighths of an inch when it reaches the extremity of the loop. Vith this construction, the mechanism does all the work of knocking ofi the roving frame so that the operator does not have to give the frame any attention whatsoever, but the mechanism completes the whole operation of knocking oftn so that the operator does not have to do anything except doti the bobbins whereas with my old construction, the operator was obliged to watch the machine.

It may be stated with regard to Figure 1 that in the drawings I have shown the arm 31 and the pin 34 as if they were disposed on the rear side of the wheel 30 and the bracket 29 is disposed on the front side of the wheel 30, that is, toward the front of the machine.- This has been illustrated in this. wayto make the operation of the device clear, but as an actual fact, the bracket 29 will extend downward on the rear of the wheel 30 and the arm 31, the pin 34 and the rod 33 will all be disposed on the front side of the wheel 30. n

lVith the mechanism so far as described, the arm 31, when it reaches a horizontal position extending toward` the support 36, the inner extremity of the eye 47 will strike the pin 42 and force the pivoted support 36 laterally a distance just suiiicient to permit the extremity of the arm 15 to drop from the should 39 on to the latch 41.

Then upon a downward movement of the bobbin rail 49, the latch 41 as previously described will be retracted, allowing the angular end of the lever 15 to drop still further or across the front of the latch. This will preventthe supportv 36 from swinging toward the right in Figure 1, .but if the knock-offlever be lifted by the operator Vor in ,other words, if the rod 12 be'A shifted by the operator toward the left in Figure 1, this willV act-to lift the arm 15 and as thefarm 15'is lifted, the support 36 will swing slightly toward the right so that the shoulder 39 will again engage beneath the knock-off lever 15. In other words, the operator by a very slight movement of the part 12-can again reset the knock-off arm lever 15 immediately afterv doi'iing orvimmediately after the knock-off lever has fallen olf the shoulder 39 on to the latch 411. In orderto prevent the support 36 from swinging back into a position where the knock-off lever may rest upon the shoulder 39, until the rack 19 is shifted back by the operator to its starting point as is necessary during the doliing operation, I provide a rest designated 59 which is mounted upon the extremity of the rack 19. 'This rest is mounted upon an angular bracket 60and the rest kis somewhat elongatedrin the direction of the rod 19.

Mounted upon the connecting -rod 33 is a finger 61 which extends outward and down- Ward relative -to the V.connecting rod and.

when the rack 19 has reached the position at the extremeleft of its travel, this rest 59 will be disposed in a position such that when the arm y31 is in a horizontal plane and pointed ytoward the support 36, the lin'- ger 61 will bear upon this rest 59. `This supports the arm 31 and rod 33 from any further movement until the rack 19 has been `shifted by the operator back to its initial port 36 swung toward the left in such position that the knock-o lever 15 cannot by any` possibility rest upon the shoulder 39.

The operator. cannot,therefore, hold the weighted knock-offv lever 15 up permanently.

He may shift the rod 12 momentarily but assoon as he releasse it, the arm 15 will drop Vdownjbeyond the shoulder 39 land the operatork cannoty again engage the knock-ofi' lever v13 andthe shoulder 39 until-he winds kthe rack bacl'to the startingpoint for the new doff. YWithout thismeans for stopping lthe downwardV movementof the ,arm

31 and the rod 33, the operator couldk pull back on rod 12 andholdthe knock-off mechanism out of operation by engaging the arm 15 with shoulder .39. Thus the bobbins would' continue to run and fill beyond the allotted amount. This isentirely prevented 'by the mechanism which I have. disclosed.

1. In a stop motion for Vwinding machines, the winding machine including avertically reciprocatable Vbobbin rail, a shipper lever forming part ,of the` stop motion, a swingable member normally supporting Vthe shipper lever in a raised position, a latch carried by the swingable member and normallyprojecting therefrom, means actuated from the driving mechanism of the winding machine acting after a predetermined time from the start of said driving mechanism to release the direct vengagement of 'the member with the lever and permit the lever to drop upon said latch, and means actuated upon a downward movement of the bobbin rail to retract the latch.l Y

2. In a stop motion for winding machines, the'winding machine including a vertically reciprocatablebobbin rail, a gravity actuated shipper lever forming part of the stop motion, a shiftablev'member normally supporting the shipper member ina raised position, a latch carriedy by the swingable member and normally ,projecting therefrom, means actuated from the driving mechanism of the winding machine acting after a predetermined time from the beginning of a winding operation to swing the member in a direction to release the direct engagement of the member with-thc lever and permit the lever to drop upon said latch, and means actuated upon a downward movement of the bobbin rail, retracting said latch to permit the full descent ofthe shipper lever, the means then acting to return the latch to its lll) normal position when the bobbin rail' is .permitan initial slight downward movement of the shipper lever, and means actuated upon a downward movement lof the'bobbin rail to entirely release said supporting member from the lever to permit vthe lever to Vfully drop and stop the machine.V

1. In a stop motion for winding machines, i

the winding machineincluding a vertically reciprocatable bobbin rail, a vertically movable shipper lever,- means normally holding one end of the shipper lever raised, means Yactuated from the 'driving' mechanism of the winding machine acting` after aV predetermined length of time from the start of'said driving mechanism to partially release the shipper lever, Yand means then actingupon a downward movement of the b obbin rail to entirely release the shipper lever.

5. In a stop motion for winding machines,

the winding machine including a vertically reciprocatable bobbin rail and a contact shaft, a gravity actuated shipper lever, a shiftable support therefor normally supporting the shipper lever in a raised position, a latch carried by the support, means actuated by said Contact shaft to swing said member from beneath the lever and permit the lever to drop upon said latch, a shaft upon which the latch is mounted, a counter-weighted lever mounted upon said shaft, a member engaging said lever opposite its counterweight, and operatively engaged to move With the bobbin railfwhereby as said bobbin rail moves downward, the latch will be rotated to release position to release its engagement with the shipper lever and to permit the shipper lever to drop a distance suflicient to cause the knock-,off of the machine.

6. In a stop motion for winding machines, the winding machine including a vertically reciprocatable bobbin rail, a shipper lever adapted to move by gravity to a knock-olf position, a Y swingable support having a shoulder upon which the lower end of the shipper lever is supported and carrying a latch normally projected in a position just beneath said shoulder, a shaft mounted on the member and upon which said latch is mounted for oscillation, a counter-weighted lever mounted upon said shaft, a vertically reciprocatable hook-shaped member operatively engaged with the bobbin carrying rail to move therewith, and so disposed with relation to the unweighted end of the lever that when the pivoted supporting member swings toward the hook-shaped member, the free end of the counter-weighted lever will be ycarried beneath the bill of the hook-shaped member, a rotatable element, a rod connected to the rotatable element yto be reciprocated thereby, and having sliding engagement with said shaft for a predetermined distance upon a movement of the rod in one direction and then acting to shift the pivoted member in a direction to release the shipper lever and permit it to drop upon the latch, and means actuated by the driving mechanism of the winding machine acting to completely rotate said rotatable member after la predetermined time from the starting of the driving mechanism.

7 In a winding machine, a vertically reciprocatable bobbin rail, va knock-olf lever having a vertically movable portion descending to stop thema-chine, a pivoted support having a shoulder normally supporting the knock-off lever in a raised position and having a retractable latch disposed immediately below the shoulder, a counter-weighted arm mounted to shift with said latch, the counter-weight of the arm acting to project the latch, said arm when tilted against its counter-weight acting to retract the latch, a vertically reciprocatable member having yits extremity ,normally disposed above the extremity o fY the arm, vsaid member having operative connection to the bobbin rail of the winding machine to be reciprocated thereby, a contact shaft having a beveled gear thereon, a longitudinally extending shaft driven from the beveled gear and carrying a worm, a worm wheel engaged by said Worm, the worm wheel having a laterally projecting pin, an arm loosely mounted upon the 'shaft' ofthe worm wheel and in the path of motion of said pin, a rod connected to the extremity of said anni and slidably connected to the pivoted support for limited movement in one direction, said rod after said limited movement acting to swing the supporting member to carry its shoulder from beneath the shipper lever to permit the shipper lever to drop upon the latch.

8. In a stop motion for winding machines, the winding machine including a vertically reciprocatable bobbin rail, a shipper lever forming part of the stop motion, and a belt shifting rack, a swingable member normally supporting the shipper lever in a raised position, a latch carried by the swingable member and normally projecting therefrom, means actuated from the driving mechanism of the winding machine acting after a predetermined length of time from the start of said driving mechanism to release the direct engagement of the member with the lever and permit the lever to drop upon said latch, means actuated upon the downward movement of the bobbin rail to retract the latch to permit the full descent of the shipper lever, and means carried by the rack preventing the swingable member from moving back into a posit-ion where it can engage said shipper lever when the latter is raised until the rack has been shifted to its initial position.

9. In a winding mechanism, a vertically reciprocatable bobbin rail, a belt shifting rack, a knock-off lever having' a vertically movable portion acting to stop the machine when its descends, a support pivoted at its upper end and having a shoulder nor1nall 7 supporting the knock-ofi' lever in a raised position, a contact shaft having a beveled gear thereon, a longitudinally extending' shaft driven from the beveled gear and carrying a worm, a worm wheel engaged by said worm, the worm wheel having a laterally projecting pin, an arm loosely mounted upon the shaft of the worm wheel and in the path of motion of said pin, a rod connected to the extremity of said arm and having an eye slidably connected to the pivoted support for limited movement in one direction, said rod after said limited movement acting to swing the supporting member to carry its shoulder from beneath the shipper lever to permit the shipper lever to drop upon the latch, and means preventing a movement of said rod in a direction away from the pivoted support until the rack is shifted to its initial position comprising a, finger mounted upon the rod'and a supporting member for said finger mounted upon the rack and disposed in.V the path of down- Ward movement of saidinger until the rack has been shifted a distance toward its initial position.

lo In testimony whereof I hereunto aix my signature.

JAMES C. NUNNALLYm

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