US1115115A - Bobbin-stripper. - Google Patents

Description

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Patented Oct. 2'7, 1914.

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THE NORRIS PETERS co #HOTo-UTHQ, wAsHlNGmN, D4 c.

B. H. RYONL BOBBIE STRIPPER. APPLICATION FILED DEG,12, 1913.

1, 1 1 5, 1 1 5, Patented 0015.27, 1914.

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movnmab THE NORRIS PETERS C0. FHOTO-LITI1 I, WASHING roN. D c.

E. H. RYON.

BOBBIN STRIPPER.

APPLICATION FILED DEG.12, 1913.

Patented Oct. 27, 1914.

4 SHEETS-SHEET 3.

THE NORRIS PETERS 50., PHOTO-LlTHU-. WASHINGTON, n. c.

E. H. RYON.

BOBBIN STEIPPER. APPLIOATIOH FILED DEC. 12, 1913.

4 SHEETS-SHEET 4.

Patented Oct. 27, 1914.

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THE NORRIS PETERS 60.. PHOTO 11.17%: WASHINGTON. D c,

EPPA H. EYON, OF WALTHAM, MASSACHUSETTS, ASSIGNOR TO GROMPTON 8: KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTS.

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Application filed December 12, 1913.

To all to 7mm it may concern:

Be it known that I, EPPA H. Bron, a citizen of the United States, residing at Waltham, in the county of Middlesex and State of Massachusetts, have invented a new and useful Bobbin-Stripper, of which the following is a specification.

This invention relates to a per, especially designed to remove waste yarn from bobbins which have been ejected from an automatic filling replenishing loom of the so-called feeler type. The bobbins used in such looms are formed with a straight cylindrical portion near the butt, upon which portion is usually placed a preliminary winding or bunch of filling yarn before the regular winding is placed upon the bobbin. hen in position in the shuttle, this cylindrical portion coacts with a feeler or detecting device upon the loom which controls the operation of the filling replenishing mechanism. As soon as the amount of yarn upon the bobbin has been reduced to a predetermined point, the feeler allows the replenishing mechanism to become operative to eject the used bobbin and to insert a full bobbin in place thereof. A small amount of fillingyarn is necessarily left upon the ej ected bobbin which must be removed therefrom before the bobbin can be again used. It has been the common practice to remove this waste yarn by cutting it from the bobbin with a knife or by loosening the yarn upon the bobbin by striking the nose of the bob bin sharply upon a. rigid block, the yarn thereafter being slipped off of the end of the bobbin. These manual methods have been found to seriously injure the bobbins and to impair their length of service, and consequently certain mechanical devices have been designed to remove the waste from the bobbins. The more common type of such devices has consisted essentially of a combination of devices for gripping or supporting a single bobbin and a stripping device movable longitudinally of the bobbin to loosen the yarn and force it off from the end of the bobbin.

The object of the present invention is to increase the capacity and speed of operation and to improve the general efficiency of machines for performing the operation above described. With this object in view, a feature of the present invention contemplates the provision of bobbin supporting means Specification of Letters latent.

bobbin strip- Patented Oct. 27, 1914.

Serial No. 806,317.

v operable to support and guide the bobbins poth before and after the stripping operalon.

Another feature of the invention contemplates the provision of a plurality of gripping and stripping devices movable successively into operative position, thus eliminatmg loss of time during idle movements of the stripping devices. Provision is also made for feeding the supported bobbins intermittently to the gripping and stripping mechanism and the feeding device is mounted to yield without injuring itself or the work should the bobbin for any reason become caught in the path of the feeding finger. As a further safeguard I have provided a stop motion device by which the machine will be disconnected from its driving means if a bobbin is improperly positioned between the gripping devices.

To the accomplishment of the objects of my invention above referred to, the invention consists of certain devices, arrangements and combinations, of parts which will be hereinafter described and more particularly polnted out in the appended claims.

A preferred form of the invention is shown in the drawings in which-- 1 Figure 1 is an end elevation of the bobbin stripper; Fig. 2 is a left hand side elevation of the machine shown in Fig. 1; Fig. 3 is a top plan view of the gripping and feeding mechanism; Fig. l is a cross section taken along the line H of Fig. 1; Fig. 5 is a detailof the gripping devices; Fig. 6 is a partial end elevation wit to show the stoppi a view similar to echanism; Fig. 7 is I 6 showing the parts in a different posi A Fig. 8 is a detailof certain parts of the. opping mechanism; and Fig. 9 is a perspective View of one of the stripper plates.

In the embodiment of the invention illustrated in the drawings, a frame '10 is pro vided upon which is vertically supported a rotatable barrel .11. A similar barrel 12 is mounted in bearings in a pivoted supporting arm 13, (Fig. 2) the barrel 12 when in normal position being substantially parallel to the barrel 11. The arm 13 is extended at its upper end to form a sleeve 1% to which is pivoted a rod 15 (Fig. 1) which passes loosely through a lug upon the sleeve 16 forming the upper end of the frame 10. A spring 18 surrounds the rod certain parts omitted its ends-, with a laterally extending lug 31, to project over the nut stripper plate 25 which 15 and is secured between the lug .upon the sleeve 16 and anut19 upon .the end of the rod 15, said spring tending constantly to swing the barrel 12 toward the right, as viewed in Fig. 1. A loosespacing sleeve 20 surrounds the rod '15 and abuts against the lugs upon the sleeves 14 andlG, there? y securing the rotatable barrels 11. and 12 in spaced relation, while the sity arise. Each of 21 (Figs. 1,3 and tially encircle and thereto. Reference the bobbin. I

' The barrelsll and a plurality of and in flat sides mounted to slide. A

a threaded nut plate 26. permitsthe plates 25 to axially upon the barrels venting their disengagement therefrom. Each stripper end a lateral] cess 27%(Fig. 9)

ilar in' contour to ping members 21. each 1ate2'5 there as to contact with oneof and 29 (Figs. 1 and 2) tric'ally with. the barrels cam 29 is secured cam 29 is mounted port 13 and'i's mova times retaining its the barrel 12. v v a A non-rotatable re 11 and 12.

on the pivoted supbarrel ll and is provided, intermediate of (Fig. 1) adapted plate 26' of that happens to be in lower end of the cross, arm 32 shown in land is adjustable longitudinally thereon by lock nuts 33. A similar rod 34 extends operative position. The

- through the barrel l2 and is pivoted at its The rod projection 31.

lower endtoithe cross arm 32.

34 is provided with a lateral in the same mannerkas isthe rod 30.

A cam roll 35 (Fig. is secured to the yielding egn nection permits them to be temporarily separated at their upper ends, should fneces- g the'barrels 11 and 12. has rigidly secured at its upper end, a disk; 5 formedfwith a plurality of recesses 22 each adapted to pargrip a bobbin presented; to Fig.1 will show that? the gripping members 21 grasps-the bob'binf between the butt and the bun'chjof waste? yarn left upon the cylindrical portion of:

12 may be formed with J' as shown 'inFig. 4g any-event are provided with a; plurality of longitudinally extending slots "23 within which blocks 248(Fig. 1) are vertically extending stripper plate 25lisis'e'oured to each block 4 by sc'rews'extending 'therethrough into, "This construction be freely movable .5 11 or12 whilepre-i plate 25 has at, its upper; projection27 having a retherein substantially simthe recesses in the grip- F At the lower endjof. I v is also a slight lateral pro ection 28 and the lower edge of the plate 25 and the projection 28 is so disposed. the fixed cams 29. mounted concen-g The to the' frame 10 and'the erewith thus'at all trio relation with I 30 is mounted to; slide longitudinally in bearings within the rod, 30- 18 secured to a dotted linesin Fig.

and ,coacts with a double-acting cam 36 mounted upon acani shaft 37. A bevel gear and iswdriven by a pinion 39 'se'cured toj the driving shaft 40. This shaft may be power by any tight and loose pulleys 41 and 42 and the driving belt 43.

versely in the frame of, the machine and the positionf' o f the belt spring'46 (Fig. 7) is securedat one end to the shipper and at its opposite end to a fixed part 'of the machine and tends con? stantlyto' throw the beltonto the loose pulley. s a The means employed forflgiving'an in-. Z termitte'nt rotation to the barrels 11 and- 12 comprises a one-tooth locking (Fig. '4) secured'to the'cam shaft37 and 00- operating with an intermittent gear 48 secured to the lower end of thebarrel ll.

- held in'fix'ed angular position by the look ing portion 51 of the pinion 47. Inthe position'of the gears shownin Fig. :4 the intermittent ear 48 has just completed its partial angular rotation and the locking portion '51of the pinion has partially engaged and locked the gear 48 ther angular movement. This locking engagement will continue until the pinion 47 has substantially completed its revolution. Inclined guides or supports 52 are provided for the bobbins, the guides upon the. front side of the machine right in Fig. 53 (Fig.2) upon the frame 10, as byscrews 53, while the guides upon the rear side are secured to the front guides by arched connections 54. Thus supported, movement of the pivoted arm 13 will not-result in sepa ration of the guides 52. The guides52 are extended horizontally toward the discharge end of the machine, as shown at 52 port the bobbins as Ehey leave the stripping mechanisms. The bobbins B are suspended by their butts on the guides-52 and are moved yby gravity proximity of the gripping devices 21. In addition to the gravity feed, afeeding finger 56 (Figs. 1 and 3) engageseach bobbin as it approaches the gripping mechanism and pushes it positively forward within reach of the grippers .21. l "The feeding finger 56 is part of aslotted 38 1S also mounted upon the cam shaft.

i 'providedith shipper fingers45 by which I may be controlled. A 8O (shown to the 1) belng secured to a'bracket to supcross arm 32 between the rods 30 and 34 connected with any convenient source. of suitable means such as the.

Q shipper 44'is mounted to slide transpinion 47 Thefbarrel 1-1 is also provided; with a' spur against fur- I along the guides into i arm 57 which is mounted to slide upon a block 58 (Fig. 3) pivoted to the frame 10 at 59. In the end of the slotted arm 57 there is a bearing for a crank pin 60 secured by a crank arm 61 to the upper end .of the crank shaft 62. The crank shaft 62 is suitably supported in bearings upon the frame 10 and has mounted upon its lower end a sprocket 63 (Fig. 1). A similar sprocket 64 is secured to the lower end of the cam shaft 37 and the sprockets are connected by a sprocket chain 65 so that the crank shaft 62 will make one revolution for each revolution of the cam shaft 87. The direction of rotation of the shaft 62 is such that the crank pin withdraws the feeding finger from contact with the bobbins during its return stroke and advances the same during its feeding stroke to positively push the bobbins forward to the gripping devices.

In order to prevent injury either to the feeding finger or to the bobbins in the event thatone of the bobbins for any reason cannot be advanced to the gripping devices, I have provided a yielding connection between the crank pin and the feeding finger by forming one side of the slotted arm 57 as a separate member 66 (Fig. 3) pivoted to the arm 57 at 67. A stud 68 is mounted in the end of the arm 57 and passes freely through a hole in the corresponding end of the arm 66. A spring 69 surrounds the stud 68 and is suitably secured at one end thereto, being so disposed as to force the arms 57 and 66 normally into contact with each other. When the normal movement of the feeding finger is prevented, the spring 69 will yield and permit separation of the arms 57 and 66. After the obstruction is removed, the parts automatically return to their usual relative positions.

The operation of my machine as thus far described is as follows The bobbins B are suspended by their butts in the guides 52, the placing of the bobbins within these guides constituting the only manual labor required in the operation of the machine. The bobbins move gradually downward toward the gripping devices and are ultimately moved forward by the feeding finger 56 at the same instant that a cooperating pair of the recesses 22 upon the disks 21 approaches operative position. As the bobbin advances and is gripped between the disks 21, it is also partially encircled by a pair of projecting flanges 27 upon the stripper plates 25.

The fixed cams 29 are of such contour that the stripper plates reach their extreme upper limit of travel just before they are moved to operative position, and the cams are also so shaped, that the plates, when moved into operative position, are unsupported by the cams and are free to be moved downward in the slots 28 of the bar- ' rels 11 and 12. As the plates 25 come into operative position, they stop below the projecting lugs 31 upon the sliding rods 50 and 34, which rods are immediately thereafter given a downward movement by the cam 36. This forces the stripper plates 25 downward and, as the projections 27 upon the plates encircle the cylindrical portion of the bobbin above the bunch of waste yarn thereon, the yarn is carried downward by the plates and is thus separated from the bobbin.

As the stripping devices approach the lower limit of their travel, the feeding device operates to eject the stripped bobbin and to feed the next bobbin into stripping position. The stripped bobbins travel along the horizontal guides 52 and may be thereafter disposed of by causing them to drop into a suitable receptacle or in any other desired way. During their passage through the machine, the lower ends of the bobbins B may be guided by additional guiding members 70 secured to the frame 10. It sometimes happens that a bobbin will not be properly advanced to the gripping device and will be-caught between the projections separating the recesses 22 in the disks 21. In this event, the barrel 12 will yield and move to the left as viewed in Fig. 1, thus preventing breakage of any of the operative parts of the machine. As this yielding movement of the barrel. 12 does not usually release the caught bobbin, 1 have provided connections by which the outward. movement of the barrel can operateto stop the machine.

The shipper 4a, previously referred to, is provided with a pair of slots 71 (Fig. 7) through which a pair of studs 72 are passed to support the shipper to slide upon the frame 10. In the upper side of the shipper 44 there is provided a notch 73 so located that when the belt is shifted onto the tight pulley, the notch 73 will be caught by a latch 7 4t pivoted at 7 5 to the frame 10. The

latch 7 & has secured thereto an arm 76 (Fig. 8) which extends over the outer end of an arm 77 securely fastened to the lower part of the sliding rod 84.

As shown in Figs. 6 and 7, the parts just mentioned are so adjusted that when the shaft Set is in its normal position parallel to the shaft 30, the arm 77 will permit the latch 7a to engage the notch 7 3. When the rod 3 1 is swung outwardly, as in the event of a bobbin being caught between the gripping members, the end of the arm 77 will be raised and will in turn raise the arm 76 of the latch 7 l and release the shipper. A screw 7 8 and lock nut 79 provide adjustment between the arms 76 and 77. It is therefore evident that outward movement of the barrel 12 and shaft 3% will normally release the shipper and stop the machine. It sometimes happens, however, that the yarn upon I caught by the upper position,

a particular bobbin is so tightly wound that bythe.

it cannot be forced oif from the bobbin the stripping plates 25. In this event plates are dragged over the bunch and may force the barrel 12 outwardly in the same manner as when a p the gripping devices. It is not necessary to stop the machine under these conditions and accordingly the stop ously described is so arranged that such outward movement of the lease the shipper. This result is obtained by proper adjustment of the arm 77 upon the rod 34. When the rod 3A as it will be during the feeding of the fresh bobbin into the machine, the arm 77 should be so located vertically that it can cooperate with the arm 76' and latch 74 to stop the machine if a bobbin is grippers. As soon as the feeding operation is ended,

the bobbin and in so doing, the arm 77 is separated from the arm 76 so that the barrel 12 and the rod 34: may thereafter be swung outwardly but the arm 77 will not raise the latch and release the shipper.

It should be understood that I do not limit this part of my invention to use with the particular driving and shipping mechanism herein disclosed and that it is within the scope of my invention to connect the stopping devices herein described to release any form of driving device which it may be found convenient to use in the machine.

Having thus described my invention it will be clear that many changes and modifications can be made therein by one skilled in the art Without departing from the spirit and scope thereof and I do not wish to be limited to the details herein disclosed, but

l/Vhat I claim is v 1. A bobbin stripper having in combination, means for supporting a bobbin, a plurality of stripping devices, and means for moving said devices successively into operative position.

2. A bobbin stripper comprising a plurality of gripping and stripping devices, andmeans for intermittently moving said devices in successive pairs into operative position.

3. A bobbin stripper comprising in combination, gripping and stripping devices, and means for moving said devices in a continuous path alternately into operative and inoperative positions.

4:. A bobbin stripper, having in combina tion, bobbin supporting means, a plurality of pairs of stripping devices successively presented in operative position and movable longitudinallyiof the bobbins to strip the same, and means to return the stripping devices to their'former longitudinal position while they are out of operative position.

bobbin is caught between;

motion device previ-.

barrel 12 will not re-,

is in its extremehowever, the rod 34: begins its downward movement to strip circle the barrel 5. A bobbin nately locking them'against rotation, means for positively moving said stripping devices Y longitudinally of the barrels bobbins whilethe barrels are the; stripping devices in operative position, and meansfor returning the: stripping dc to strip the locked with vices to their former longitudinal position while they are out of operative position.

6. A bobbin stripper, comprising a rotatable member, a stripping device on said member, means to alternately rotate said member'and to lock the same in successive angular positions, means to givesaid strip.- plng device its. operative movement while said member is locked in a single position, and means for gradually returning the stripping device to normal position asv the memposition's.

7. A stripping device having in combination a member mounted to rotate in fixed vertical bearings, a second member normally parallel to the first member and mounted in bearings on a pivoted support, means for intermittently rotating the first member, gears on said members by which the first member may drive the second member, a plurality of gripping devices and stripping devices mounted on said members and cooperating in successive pairswhen inoperative position, and means for moving the stripping devices longitudinally of the members to strip the bobbins.

8. A bobbin stripper having in combination a plurality of rotatable-barrels, a plurality of pairs of stripping devices mounted to slide longitudinally of the barrels, fixed cams concentric with the barrels tomove the stripping devices in one direction and reciprocating members to positively drive the stripping devices in the opposite direction. i

9. A bobbin stripper, having in combination a pairof vertically supportedrotatable barrels, a disk on each barrel having a plurality of gripping recesses therein, a corresponding number of vertically movable stripping devices supported on each barrel,

cams to raise said stripping devices, and members positively actuated to force said stripping devices downward to strip the bobbins. V r

10. In a bobbin stripper, in combination a pair of vertically mounted rotatable barrels, a disk on each barrel having a plurality of gripping recesses therein, a pair of sliding blocks mounted in longitudinal slots in her is advancedthrough successive angular said barrels, each block having a plate with aradial projection adapted to partially enof a bobbin, .and means for alternately moving the blocks in opposite directions.

11. In a bobbin stripper, a supporting frame, longitudinally slotted barrels rotatale therein, means to rotate the barrel, a plurality of stripping devices mounted on the barrel and longitudinally movable in the slots, means for moving the stripping devices in one direction and a sliding rod for moving them in the opposite direction, said rod being non-rotatably mounted concentric with said barrel and having a lug projecting from one side thereof and contacting with each of said stripping devices as the latter are rotated into operative position, said rod acting through the lug to move the stripping devices axially of the slotted barrel to strip a bobbin.

12. A bobbin stripper having in combination a pair of rotatable cooperating griping members, guides for the bobbins and intermittently operated mechanism for sliding the bobbins along the guides into the path of the rotatable gripping members.

18. In a bobbin stripper, in combination, a pair of rotahble cooperating gripping members, guides upon which a plurality of bobbins may be suspended by their butts, and means for intermittently sliding said suspended bobbins along the guides into the path of the rotatable gripping members.

1%. A bobbin stripper having in combination a pair of cooperating grippers, stripping mechanism, guides for the bobbins, means for feeding the bobbins from said guides to said grippers and stripping mechanism, and devices for driving said feeding means, the driving devices and feeding means being yieldingly connected and temporarily separable under excessive pressure.

15. In a bobbin stripper, in combination, a supporting structure upon which a plurality of bobbins may be suspended by their butts, gripping and stripping mechanism located intermediate the ends of said structure, and means for intermittently feeding the suspended bobbins along the supporting structure to and past the gripping and stripping mechanism.

16. A bobbin stripper, having in combination a pair of gripping members mounted to rotate in opposite directions on substantially pa allel axes, means to support a bobbin, and means to advance said bobbin into the path of the rotating gripping members.

7. In a bobbin stripper, feeding mechanism comprising a pivoted block, a slotted Copies of this patent may be obtained for l arm and crank pin thereon,

five cents each, by addressing the arm mounted to both pivot and slide on said block, and a rotatable shaft having a crank arm and crank pin thereon, said slotted arm having a bearing for said pin and being operable thereby.

18. In a bobbin stripper, feeding mechanism comprising a pivoted block, a slotted arm mounted to both pivot and slide on said block, and a rotatable shaft having a crank said slotted arm having a bearing for said pin and being 0perable thereby, the two sides of the slotted arm being pivoted together and yieldingly connected to be separable under excessive strain.

19. A bobbin stripper, having in combination gripping members, stripping mechanism, means for driving the gripping members and the stripping mechanism, and c0nnections between the gripping members and the driving means whereby abnormal separation of the gripping members will disengage the driving means.

20. A bobbin stripper, having in combination grippers, stripping mechanism, driving means therefor, and a stop motion device rendered operative by abnormal separation of the grippers when the stripping mechanism is at the upper limit of its travel only.

21. A bobbin stripper, having in combination a pair of grippers yi ldingly held in spaced relation, stripping mechanism, driving means for the grippers and stripping mechanism, a shipper, a latch to hold said shipper in operative position, and means actuated by abnormal separation of the grippers to disengage said latch and release the shipper.

22. A bobbin stripper, having in combination a pair of grippers yieldingly held in spaced relation, stripping mechanism movable longitudinally of the bobbin, driving means, devices to render said driving means operable and a release for said devices actu ated by abnormal separation of the grippers when the stripping mechanism is in its highest position but unaifected by such separation after the descent of the stripper has begun.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

EPPA II. RYON.

Witnesses:

ERNEST R. LLEWELLYN, Ones. A. HAWLEY.

Commissioner of Eatents,

Washington, D. 0.

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