US1097943A - Bobbin-stripping device. - Google Patents

Description

A. E. RHOADES.

BOBBIN STBIPPING DEVICE.

APPLICATION FILED AUG. 4, 1913.

1,097,943, Patented May 26,1914.

2 SHEETS-SHEET 1.

Witnesses Inventor.

0/ WEQZQ Alongo E. Rhoqdes, W d WMWLW COLUMBIA PLANOGRAPH Cfl..\\'ASHI '7TON n c Patented May 26, 1914.

2 SHEETS-SHEET 2.

Inventor.

Alongo E. Rhoades,

b WQeW COLUMBIA PLANOGRAPH c0..\vAsmNG'r0N. D. c-.

UNITED STATES- PATENT OFFICE.

ALONZO E. RI-IOAIDES, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

BOBBIN-STR-IPPING DEVICE.

To all whom it may concern:

Be it known that I, ALoNzo E. Ri-ioAons, a citizen of the United States, residing at Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Bobbin-Stripping Devices, of which the following description, in connection with the accompanying drawing, is a specifica-. tion, like characters on the drawing representing likeparts.

This invention has for its object the production of apparatus for stripping the waste yarn from bobbins after they are removed from the loom shuttle and prior to the return of the bobbins to the spinning frames for the reception of fresh yarn masses.

This invention is an improvement upon In the removal of waste from the bobbins.

it is of great importance that the bobbin shall not be scored, cut or otherwise marred when the waste is removed therefrom because if the bobbin is thus injured the yarn subsequently wound thereupon is liable to catch on the roughened surface of the bobbin and break during the weaving operation.

But it is important also that the waste be stripped completely and cleanly from the bobbin for if any is left on the bobbin the stripping operation in some form must be repeated until the bobbin is thoroughly clean but each repetition of the stripping or cleaning operation adds to the expense.

In the present invention and in my prior apparatus the bobbins to be stripped are placed manually in a carrier which is given a step by step movement thereby to present the bobbins successively in position to be stripped.

The present invention provides three de vices which act successively upon each bobbin as it comes step by step into position beneath them.

The first device engages the waste yarn and pushes it longitudinally of the bobbin in the direction of the tip, the diminishing diameter of the bobbin toward its tip per- Specification of Letters Patent.

Application filed August 4, 18-13.

Patented May 26, 1914.

Serial No. 782,773.

' mitting the annular mass of Waste to hang loosely as it approaches the tip. The second device next acts upon the bobbin going over the same ground as the first device. But this second device comprises a pair of y elding jaws which fit closely about the bobbin and yield to maintain that fit during the entire longitudinal traverse, thus pushing forward toward the tip any straggling ends which may remain after the stripping action of the first device. After these two devices have acted, the entire yarn mass will be supported loosely on the bobbin near the tip and may be readily pushed off. Furthermore, be cause these two devices do not push the mass of waste entirely off, the bobbin tip may be supported thus maintaining the bobbin accurately in position for the stripping action. The third device now acts to push off the loosely hanging annular mass of waste over the tip of the bobbin. The bobbin when in position is thus not supported at its tip and because the traverse of the third device need begin much nearer the tip of the bobbin, the bobbin may be further supported at some distance from its butt.

The invention thus provides three stripping devices acting successively upon each bobbin and insuring the complete and clean removal of the waste.

The invention also provides means for operating the stripping devices to insure the strippers contacting with the bobbin during their traverse. Specifically this is effected by mechanism for producing friction on the means for operating the strippers during the earlier part of the forward traverse.

The apparatus is automatic in its operation and the duty of the attendant is confined to placing the bobbins to be stripped in the intermittingly moving carrier. As in the case of my prior patent this apparatus is provided with a stop motion so constructed and arranged that if a bobbin approaching stripping position is mis-positioned in the carrier, the stop motion will be called into action automatically and the apparatus will be stopped before the mis-positioned bobbin reaches the field of action of the stripper.

The separation of the clean stripped bobbins and the waste removed therefrom is secured by providing receptacles for each with chutes leading thereto so that the waste when stripped from the bobbin passes down one chute into its receptacle and the bobbin when discharged from the carrier passes down the other chute into its receptacle.

The nature and objects of the invention will be more fully understood from the accompanying description and drawings and will be particularly pointed out in the claims. v I

The drawings show a preferred form of apparatus embodying the invention, such details of the apparatus as are not necessary to an understanding of the inventionbeing omitted.

In the drawings :Figure 1 is a front elevation of a bobbin stripping apparatus embodying my invention, the carrier being partly broken out to avoid confusion, and the strippers shown as just having begun their active stroke to strip the waste. Fig. 2 is a left hand end view of a portion of the apparatus, partly broken away, to show the position of the strippers. Fig. 3 is a top plan view of the apparatus with the parts in the position shown in Fig. 1, but the bobbins are omitted and also the movable members of the bobbin holding device on the carrier to make the illustration clearer. Fig. 4 is a right hand end view of a portion of the apparatus to illustrate the means for supplying friction to the stripper mechanism. Fig. 5 is a perspective view of a detail.

In the construction illustrated the working parts of the apparatus are mounted on a flat and substantially rectangular base 1 supported at a suitable height on legs 2. An upright bracket 3 on the base is provided with an elongated transverse bearing 4; for the main shaft 5 provided at its outer end with a gear 6 intermeshing with a pinion 7 carried on the power shaft 8. The shaft 8 is likewise supported in a transverse bearing 9 formed in the upright bracket 3 parallel with the bearing 4. The power shaft 8 is provided at its outer end with fast and loose pulleys 10 and 11. The bracket 3 has fixedly secured to it laterally extended guide- rods 12 and 13, one above the other, the rod 12 having slidably mounted upon it the hub let of a belt-fork 15 by means of which the driving belt, not shown, is shifted from one to the other pulley and in the drawing the fork is shown in position to maintain the belt on the fast pulley 10. A forked arm 16 is rigidly attached to and extends from the hub 14 and embraces the lower guide-rod 13 to prevent any rotative movement of said hub and the belt-fork on the main guide-rod 12. The base also supports brackets 17 and 18 having alined bearings 19 and 20 respectively which support in turn a horizontal shipper-shaft 21 extended endwise of the base. The shaft 21 has at the front or left hand end a shipper 22 fixedly secured to it within convenient reach of the operator who in practice stands opposite the bobbin carrier and facing the apparatus. A pin 23 rigidly connected with the hub 14 enters a slot in the upper end of the arm 24 fast on the shipper-shaft 21, whereby rocking of the latter will move the belt-fork 15 to shift the driving belt as desired. The shipper-shaft is shown as surrounded by a coiled spring 25 which normally acts to turn the shaft to stopping position. This action is prevented when the apparatus is running by means hereinafter described. The base 1 also supports at the front of the apparatus, brackets 26 and 27 in which is supported the horizontal shaft 28 projecting well beyond the left hand or front end of the base. The bracket 26 supports concentric with the shaft 28 a shouldered non-rotating sleeve 29. Upon the projecting portion of the sleeve 29 is mounted the rocking hub 30 of a pawl carrier 31. This pawl=carrier has a pin 32 on which is pivoted a feed-pawl 33 held by the spring 3a in engagement with a ratchet 35. A stud 36 projects from the pawl-carrier 31 and thereby the pawl-carrier is operated as will be explained after the stripping mechanism has been described.

The ratchet 35 in practice is secured to the hub 37 of the bobbin carrier which comprises the circular disk 38 provided with suitable bobbin holding devices for the bobbin butts. These devices are or may be the same as illustrated and described in my prior patent and hence are not described here in detail. They comprise the fixed jaws 39 and the cooperating pivoted or movable jaws 40 pivoted on the disk 38. The bobbin carrier is intermittingly rotated on the shaft 28 in unison with the step by step rotation of the ratchet 35 actuated from the feed-pawl 33.

In-Fig. 1 I have shown only one of the fixed jaws 39 and only one of the cooperating pivoted jaws 40 to avoid confusion and for a similar reason all of the pivoted or movable jaws 40 are omitted. The movable jaws 40 are yieldingly held toward their respective cooperating fixed jaws as described in my prior patent and depending ends 41 are arranged to rest upon the periphery of a controlling cam 42, rotarily adjustable with respect to but movable synchronously with the disk 39. This cam is so arranged and adjusted as to relieve the pressure between the jaws when the bobbin has passed beyond the field of the strippers and is ready for discharge from the apparat-us.

The attendant places the bobbins in the carrier by inserting the butts thereof be tween the pairs of jaws, the axis of the bobbin being held-at right angles to the disk 38. The tips of the bobbins are supported by and slide upon a segmental tip support 43 having a flange 44 to serve as an abutment or stop against downward or longitudinal movement of a bobbin particularly when the stripping devices are acting upon the waste. This tip support has a hub 45 mounted on the shaft 28 and held fixed thereon by a suitable set-screw 46 and the support is so positioned that after the action of the first two stripping devices is completed, the next feed movement of the carrier will remove the tip of such bobbin from the support 43 and bring it into the field of operation of the final stripping device or clearer.

An auxiliary bobbin rest 47 is provided to sustain the bobbin during the action of this third stripper or clearer, said rest 47 being located just beyond the end of the tip support 43 but much nearer the disk 38 so that the rest engages the barrel of the bobbin back of the loosened waste while the same is cleared therefrom. This rest 47 is adjustable radially and rotarily with respect to the shaft 28 as in my prior patent. It will thus be seen that the bobbins inserted manually in the carrier are moved forward step by step so that each bobbin is brought into its first stripping position immediately over the shaft 28, the tip of such bobbin resting upon the tip support 43. At the next advance of the carrier the bobbin is moved to position beneath the second stripping device to insure or complete the stripping action. At the next advance of the carrier the bobbin moves to its position beneath the third stripping device or clearer. In taking this last step the bobbin tip moves off the tip support 43 and the barrel passes upon the auxiliary bobbin rest 37. Upon the next step of the carrier the cotiperating jaws are released and the bobbin is freed from the carrier.

Receptacles 48 for the waste and 49 for the cleared bobbins are suitably located as on the floor beneath the left hand or forward end of the apparatus. These receptacles are herein illustrated as pans or upright rectangular boxes. A chute 50 secured and supported from the bobbin tip support 43 extends from beneath the clearing position of the bobbin to a point over the recep tacle 48 so that as the waste is cleared from the bobbin it slides down this chute into the receptacle. The receptacle 49 is located beneath the posit-ion to which the bobbin advances on being cleared so that when the bobbin is released from the carrier it falls directly into the receptacle.

The stripping mechanism is supported from the brackets 26 and 27 which for that purpose have laterally extended flat heads upon which is bolted an elongated horizontal casting 51. The casting 51 is provided with a longitudinal guide-way 52 preferably rectangular in cross section for the reception of. a correspondingly shaped long slide bar or carriage 53. Plates 54 overlap the top of the carriage and retain it in the guideway.

The carriage near its forward end has a rigid upright car 55 in which is fixedly mounted a transverse fulcrum rod 56 pro j ecting beyond the ear at each side. On the front end of the fulcrum rod the hub of a short rocker arm 57 is mounted and this arm is pivotally connected with a transmitting member such as the bell crank 58 fulcrumed at 59 on the bearing 30. The short arm of the bell crank is slotted to receive the stud 36 on the pawl-carrier 31 previously described. When the carriage moves to the left the bell crank is rocked in the opposite direction to retract the feed-pawl and set it in readiness for the next stroke.

The fulcrum rod 56 at the rear side of the car 55 has mounted upon it the hub 60 of a long arm 61 which projects over the carrier disk 38 and beyond it and is provided with a downwardly projecting notched head 62 to straddle the barrel of the bobbin. This head is shown as a plate notched at the bottom at 63 and removably secured to the end of the arm 61. This device constitutes the first stripping device. In operation the notched plate 62 drops upon the top of the barrel of the bobbin which is in position to be stripped back of the waste 64, and when the carriage 53 moves outwardly strips or pushes the waste along the bobbin toward the tip thereof. As the diameter of the bobbin decreases toward the tip this stripper operates to loosen the annular mass of waste as it is moved outward. This stripper moves in a fixed path after it engages the waste for a lateral flange 65 on the stripper arm rests and slides upon the top of one of the retaining plates 54.

The stripper arm 61 is provided with a boss 66 located above and to the left of the fulcrum rod 56. This boss is connected by a pitman 67 with a wrist pin 68 on a crank disk 69 carried by the shaft 5, whereby the rotary motion of the shaft 50 is converted into rectilineal motion to effect the reciprocation of the carriage 53. The disk 69 rotates in the direction of the arrow thereon and owing to the eccentricity of the boss 66 with relation to the fulcrum rod 56 the stripper arm 61 tends to be depressed on the active or stripping stroke of the carriage 53 which tendency is resisted by the stop flange 65 cotiperating with the plate 54. When the stripping stroke of the carriage is completed and the movement of the carriage is to be reversed, the pull exerted from the pitman 67 is thus applied above the fulcrum rod 56 and the stripper arm and stripper are first swung upward out of the path of the next bobbin to be stripped as it is fed by the bobbin carrier into stripping position. It is important that this operation of the parts should be insured. The stripper must be an extension 71 lateral to the front of the apparatus. A lon itudinal guide way 72 is formed in a bracket 73 secured to the casting 51 and projected to the front of the apparatus. A block 74 is fitted to slide longitudinally in this guide-way and is provided at its right hand end with a wedge shaped nose 75. A pitman 7 6 pivotally connects the block 74: with the extension 71 of the arm 70. The connection of the pitman 76 with the extension- 71 is an adjustable connection by means of the nuts 77 so that the position of the block 74; may be adjusted with respect to the extension 71.

An arm 78 is arranged transversely to the carriage at the right hand end. Its front end rests on a shelf '79 projecting from the bracket 27, being positioned thereon by a pin- 80 fixed in the shelf and extended through a slot in the arm. The rear end of the arm 78 projects over the carriage 58 and is provided with a suitable friction detent such as a friction pad 81 bearing upon the top of the carriage. The friction exerted is regulated by an adjusting screw 82 passed through the arm 78 and screwed into the shelf 79, a check nut 83 maintaining the adjustment. The friction will consequently be increased by raising the forward end of the arm 78 and this is done at the required times by the nose 75 of the block 74: sliding in beneath the forward end of the arm 78.

It is not desirable that more friction than necessary shall be applied to the carriage 53 during the stripping action. It is only necessary that lost motion shall be prevented and the strippers maintained in contact with the bobbins during the stripping operation. It is essential that the strippers shall be brought down into contact with the bobbins behind the waste before the forward move ment begins and that they shall be elevated from the bobbins before the retracting movement begins. In this invention the parts described are so adjusted and arranged that as the carriage 53 nears the end of its retracting movement the nose 7 5 passes beneath the outer end of the lever Y8 thus placing a heavy friction upon the carriage 58 beneath the friction pad 71, hence when the forward or stripping movement of the carriage begins it Will be held by this friction until the pitman 67 has first acted to throw the strippers downward thus insuring the strippers being brought into contact with the bobbins. The lost motion then all being taken up and the pitman 67 pressing the strippers clownwardly, the friction may then be relieved and the parts are therefore so arranged that the nose 7 5 passes out from beneath the lever 78. But some friction is still maintained on the slide 53 so that when the retracting movement of the carriage begins the pitman 67 will first act to elevate the strippers. The end of the arm 70 is arranged to contact with the carriage 53 upon the beginning of the retracting movement so as to limit the upward movement of the strippers.

The second stripper is operated from the fulcrum rod 56. For that purpose a hub 84: is rigidly secured to the fulcrum rod 56 in the rear of the hub 60 and carries an arm 85 projecting to the left at the free end of which the second stripper arm 86 is pivoted. This stripper arm projects to the left to the same distance as the first stripper arm 61. A. stud 87 projects from the first stripper arm 61 and enters a longitudinal slot in the second stripper arm 86. Thus the second stripper arm 86 is given an up and down movement co-incidentally with that of the first stripper arm and since its pivotal point is not in advance of, or farther to the left than, the ivotal point of the first stripper arm it wil move farther down, as is necessary in order to enable it to contact with the bobbin beneath, which is farther down or on a lower level than the bobbin beneath the first stripper arm.

The effective end of the second stripper is formed as a pair of yielding jaws adapted partially to surround and to grip the barrel of the bobbin. hese jaws are indicated as plates 88 pivoted at 89 to the end of the stripper arm with their lower ends pressed together by a spring 90 between their upper ends. A stop 91 is provided to limit the inward movement of the jaws. The lower ends of the jaws are oppositely notched to fit the bobbin barrel. This stripper when brought into connection fits yieldingly and closely to the bobbin barrel and as it moves forward gathers up and pushes along any fiber or threads which may not have been removed by the action of the first stripper. The first two strippers, therefore, act to loosen all the waste upon the bobbin and push it forward toward the tip end. Dur ing the action of both of these strippers the iobbin has been supported upon the tip support so that both of these strippers may act against a bobbin held in quite accurate axial alinement. The third stripping device, the function of which is to clear the bobbin of the waste, comprises an arm 92 on the fulcrum rod 56 in the rear of the hub 84 and presenting a simple forked end 93 adapted to straddle the bobbin barrel.

This stripper or clearer is moved down by its own weight and is lifted by an extension 94 therefrom, extending over the second stripper arm 86. The stripper or clearer 93 need not pass over the entire bobbin barrel because its function is simply to push off the waste already loosened and moved toward the bobbin tip. Neither is it neces sary that the bobbin during the cleaning action be held in rigid alinement. Consequently the bobbin in this position is sup ported by the auxiliary rest- 4-37 already described and the bobbin stripper 93 begins its action at a considerable distance from the butt of the bobbin. The three strippers are thus all acting simultaneously but on successive bobbins so that each bobbin is acted on in three successive positions before it is finally cleaned and discharged from the apparatus.

Similar means are. provided as in my previous patent for stopping the apparatus in the case of a mis-positioned bobbin and to prevent overrunning of the bobbin carrier. v

When the shipper 22 is moved to running position a pin 95 thereon rides along a cam 96 and in front of a shoulder 97 on a detent 98. If the detent is depressed to disengage said pin and shoulder the spring 25 immediately acts through the shipper shaft 21 to shift the driving belt to the loose pulley. The releasing arm 99 provided with a convex shoe 100 is normally positioned as shown in Fig. 2, overhanging the path of movement of the butts of the bobbins in the carrier as such bobbins approach the position of said shoe just permitting a properly gripped butt to pass under it. If the attendant has been careless and has placed a bobbin in the carrier with its butt sticking out beyond the periphery of the disk 38, such butt will engage and lift the shoe 100 thereby depressing the detent 9S and thus automatically effecting stoppage of the apparatus.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 2- 1. In an apparatus of the class described, an intermittingly movable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a plurality of stripping devices each having its stripping movement toward the bobbin tip and one of which is provided with a pair of yielding jaws to grasp yieldingly the bobbin barrel and means for reciprocating said devices successively upon, and longitudinally of, each bobbin.

2. In an apparatus of the class described, an intermittingly movable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a preliminary stripping device, a second stripping device provided with a pair of yielding jaws to grasp yieldingly the bobbin barrel, a third stripping device for clearing off the waste loosened by the other stripping devices and means for reciprocating said devices successively upon, and longitudinally of, each bobbin.

3. In an apparatus of the class described, an intermittingly movable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a plurality of stripping devices each having its stripping movement toward the bobbin tip and one of which is provided with a pair of yielding jaws to grasp yieldingly the bobbin barrel, the said devices being located adjacent a corresponding plurality of bobbins held in the carrier and means for simultaneously reciprocating said devices, whereby the said devices act successively upon, and longitudinally of, each bobbin to strip the waste therefrom.

4-. In an apparatus of the class described, an intermittingly ovable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a preliminary stripping device, a second stripping device provided with yielding jaws, a third stripping device for clearing off the loosened waste, the said three stripping devices being located adjacent three successive bobbins held in the carrier and means for simultaneously reciprocating said devices whereby they act successively upon, and longitudinally of, each bobbin to remove the waste therefrom. a

5. In an apparatus of the class described, an intermittingly movable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a plurality of stripping devices each having its stripping movement toward the bobbin tip and one of which is provided with a pair of yielding jaws to grasp yieldingly the bobbin, means for reciprocating said devices successively upon, and longitudinally of, each bobbin, and means for causing the said stripping devices to move toward the bobbin barrel as they begin their reciprocation to insure contact with the barrel behind the waste.

6. In an apparatus of the class described, an intermittingly movable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a plurality of stripping devices each having its stripping movement toward the bobbin tip and one of which is provided with a pair of yielding jaws tograsp yieldingly the bobbin barrel, the said devices being located adjacent a corresponding plurality of bobbins held in the carrier, means for simultaneously reciproeating said devices, whereby the said devices act successively upon and longitudinally of, each bobbin to strip the waste therefrom, and means for causing the said stripping devices to move toward the bobbin barrel as they begin their reciprocation to insure contact with the barrel behind the waste.

7 In an apparatus of the class described, an intermittingly movable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a preliminary stripping device, a second stripping device provided with a pair of yielding jaws to grasp yieldingly the bobbin barrel, a third stripping device for clearing off the waste loosened by the other stripping devices, means for reciprocating said devices succes" sively upon, and longitudinally of, each bobbin, and means to cause the preliminary stripping device and the second stripping device to move toward the bobbin barrel as each begins its stripping action to insure contact with the barrel behind the waste.

8. In an apparatus of the class described, an intermittingly movable carrier to receive, hold and present in position for stripping the bobbins to be stripped, a preliminary stripping device, a second stripping device provided with yielding jaws, a third stripping device for clearing off the loosened waste, the said three stripping devices being located adjacent three successive bobbins held in the carrier and means for simultaneously reciprocating said devices, whereby they act successively upon, and longitudinally of, each bobbin to remove the waste therefrom, and means to cause the preliminary stripping device and the second stripping device to move toward the bobbin barrel as each begins its stripping action to insure contact with the barrel behind the waste.

9. In an apparatus of the class described, a fixed horizontal guideway, a carriage slidable therein, a stripper arm fulcrumed on the carriage and having a waste stripper at its free end and means including a pitman connected with said arm above and beyond its fulcrum to reciprocate its carriage combined with a detent to retard the movement of the carriage and means movable with the carriage to increase the frictionaction of the detentat the end of the rearward stroke and the beginning of the forward stroke, whereby the stripper arm will be lifted at the end of the rearward stroke and depressed prior to and at the beginning of the forward stroke of the carriage to insure the engagement of the stripper with the bobbin barrel.

10. In an apparatus of the class described, a fixed horizontal guideway, a carriage slidable therein, stripper mechanism mounted and operated from said carriage, a detent arm fulcrumed at one side of and having one end friotionally engaging the carriage, a block movable with the carriage and adapted to pass beneath the free end of said arm in the latter part of the rearward stroke of said carriage thus retarding the movement of the carriage.

11. In an apparatus of the class described, a carriage reciprocated in a fixed path, a plurality of stripping devices one of which is provided with a pair of yielding jaws to grasp yieldingly the bobbin barrel fulcrumed on said carriage, means to elevate and depress alternately said stripping devices prior to the beginning of successive strokes of the carriage, a friction detent to retard the movement of the carriage and means movable with the carriage to increase the friction action of said detent prior to the beginning of successive strokes of the carriage combined with means to present a bobbin successively to the action of said stripping devices.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

ALONZO E. RHOADES. Witnesses:

FRAN H. FRENCH, DANA Oscoon.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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