US2132344A - Bobbin stripper - Google Patents

Description

L. KLEEB. JR

BOBBIN STRIPPER Oct. 4, 1938.

Filed March 16, 1936 5 Sheets-Sheet l INVENTOR Lev/MA h x. I BY ATTORNEY 5 Sheets-Sheet 2 ATTORNEY Oct. 4, 1938. L. KLEEB, JR

BOBBIN STRIPPER Filed March 16, 1956 I I f I h HI I I II II IIIIIIIIII I flfl wm @M II U Qw $1 w w NW. 1 II Q am WWI W Sm III N L W I O o 0 0 AM. I .u I 0 o 0 O O M. I o o m I I II I I I I I o I I m. n a o I I I I I I II. 9% I I M o I o I WQNI M QM I I o I I I I a I QM I MI QM mm v NH R g Ni I z Oct, 4, 193%., KLEEB, JR 2,132,34 ,4

BOBVBIN STRIPPER Filed March 16, 1936 5 Sheets-Sheet 3 ATTORNEY L. KLEEB, JR

BOBBIN STRIPPER Get. 4, 1938.

5 Sheets-Sheet 4 Filed March 16, 1936 N VENTO R: WA BYQ TORNEY L. KLEEB, JR

BOBBIN STRIPPER Oct. 4 19380 Filed March 16, 1936 5 Sheets-Sheet 5 ATTORNEY Patented Oct. 4, 1938 BOBBIN STRIPPER Leonard Kleeb, Jr., Fall River, Mass, assignor, by mesne assignments, to The Terrell Machine Company, North Carolina Charlotte, N. 0.,

a corporation of Application March 16, 1936, Serial No. 69,073

18 Claims.

This invention relates to bobbin strippers, particularly of the type employed to strip silk or rayon loom bobbins which must be stripped without marring or roughening of their smooth sur- 5 faces, such as would result in catching of the silky yarn during weaving.

The hand stripping operations which, because of this limitation on mechanical stripping, have commonly obtained heretofore, have been slow and expensive in labor costs, resulting in the suggestion that the bobbins be stripped automatically by conveying the bobbins past a roughsuriaced stripper roll against which the yarn ends are blown pneumatically, and employingas conveying mechanism, a moving belt carrying vertical spindles received within the axial bores of the bobbins. Although the pneumatic and stripper roll elements are effective for removing the yarn, the conveying mechanism heretofore proposed has its limitations in that it involves a slow manual operation of placing the bobbins over the moving spindles. Furthermore, the natural downward hang of the end of the yarn to be removed cannot be taken advantage of in removing the yarn in such apparatus as the conveying mechanism beneath the bobbins not only renders downwardly hanging yarn inaccessible, but it also requires the conveying of the bobbins in inverted position with their heads lowermost, thereby necessitating the raising of the loose ends of the yarn into engagement with a stripper roll above the bobbins.

It is the object of the present invention to provide a machine of this character which is effective for the purpose and sufficiently rapid to supersede the present manual operations, and to that end I provide mechanism which utilizesthe protrusion of the bobbin heads or the rings on the heads to provide supportior the pendent bobbins, in combination with feeding elements which engage the bobbins only at their heads.

In practice I have found that bobbins can be quickly and easily inserted in such a machine and rapidly conveyed thereby. The weight of the silky yarn hanging over the tapering shank and tip of the bobbin, as aided, if desired, by jets of air, either effects the complete removal of the yarn or conveys it to stripping mechanism, such as a brush-surfaced rotating cylinder, for its complete removal.

These and further objects and advantages of my invention will appear from a more detailed description thereof taken in connection with the accompanying drawings, in which:---

Fig. 1 is a side elevation view of the machine somewhat shortened in length;

Fig. 2 is a plan View of the machine, similarly shortened;

Fig. 2a is a detail pers pressure strips;

Fig. 3 is an machine as seen from the right in pective view of the belt view of the end of the Figs. 1 and 2;

Fig. 4 is an enlarged-vertical section taken on the line 4-4 of Fig. 2;

Fig. 5 is a vertical section taken on the line 5-5 of Fig. 1;

Fig. 6 is a perspective view of the right hand end of the machine as viewed in Figs. 1 and 2,

showing details of the bobbin track and belts;

Fig. 7 is a detail plan view as from the line 'l--'l of Fig. 1;

Fig. 8 is a vertical section on the line 8-8 of Fig. 2;

Fig. 9 is an enlarged elevation view, partly in section, of the end of the machine seen in Fig. 3

clipper and strands of elevation showing the ing depending Fig. 10 is an as seen from the Fig. 11 is a plan view Fig. 12 is a plan view the elements for guidyarn thereto; view, partly in section,

line l0l0 of Fig. 9;

of the clipper; of a portion of the belts and rails of a modified construction;

Fig; 13 is a vertical section on the of Fig. 12; and

line l3-l3 Fig. 14 is a detail perspective view of the modified form of track member.

To describe first the mechanism the stripping operation, the

the bobbins during for feeding bobbins to be stripped, which may be of the form indicated at l in Fig. in the mouth 2 (Fig. 2)

are manually inserted of an inclined chute,

outlet mouth ll! chine. 5 and 6 are spaced apart atthe left hand end of the ma- As indicated, in Figs. 8 and 5, the tracks the predetermined distance required to support the bobbins I by the usual rings 1 encircling are spaced slightly from bobbin head.

the bobbin head 8, and

the side surface of the The horizontal portions of the spaced tracks 5 and 6 are supported on a members H and I2, the

pair of angle iron frame shape of which is best indicated in Fig. 6 and which are mounted in any suitable manner on the adjustably securing the horizontal flanges of legs l5 of the frame. For the spaced tracks 5 and 6 on the frame members II and i2, the frame members are provided with a plurality of brackets 20 (Fig. 2) spaced lengthwise of the frame members, each of which brackets is secured to the member by a bolt 2| (Fig. 8) passing through the bracket and into the frame member. The bent up end of each bracket is drilled to receive a bolt 25. The rails 5 and 6 are provided at intervals corresponding to the spacing of the brackets 20 with lugs 26 welded to the outer edges of the rails 5 and 5, which lugs have screw threaded apertures to receive the bolts 25. By rotation of the bolts 25 the tracks 5 and 'u may be adjusted toward and away from each other for accurate parallelism of the tracks at the desired distance apart. To secure the bolts 25 against turning after the desired adjusted position has been obtained, I provide the bolts with lock nuts 2'! and for further securing the tracks in their adjusted position I secure the tracks at intervals with bolts 30 passing through elongated slots in the tracks and into the frame members I I and I2.

The inclined portions of the tracks 5 and 6, indicated on the right in Figs. 1 and 2, are similarly supported, the tracks being 'adjustably mounted on frame members 3| and32 (Figs. 2 and 3) extending upwardly to the inlet mouth at the inclination required for the desired gravity feed of bobbins to the horizontal portions of the tracks.

After the bobbins reach the bottom of the inclined chute they are conveyed along the horizontal tracks through the machine by means of a pair of belts 40 and 4| (Fig. 2) which, as indicated in Figs. 5 and 6, have adjacent parallel courses running immediately above the tracks. These adjacent inner belt courses move toward the outlet mouth at the same speed and by their pressure against the rings on the bobbin heads push the bobbins along the tracks 5 and 6. The belt 40 (Fig. 2) passes over horizontal pulleys 42 and 43 mounted on vertical shafts 46 and 41, both turning clockwise, and the pulley 43 is powerdriven, as will appear. The belt 4| passes over horizontal pulleys 44 and 45 mounted on vertical shafts 48 and 49, both turning counter-clockwise, and the pulley 45 is power-driven.

The inner, bobbin-engaging courses of the belts 40 and M are relatively urged toward each other to press yieldingly against the rings on the bobbin heads. For that purpose the inner course of the belt 49 is backed up by an elongated angle iron 59, (Figs. 2 and 2a), which is mounted on top of the track 5 and secured thereto by bolts 5| (see also Fig. 5) passing through the horizontal web of the iron 50, and into the track 5. Adjustment of the angle iron 50 to insure proper position of the inner course of belt 49 may be obtained by providing elongated slots in the angle iron 50 through which the bolts 5| passand the horizontal web may be broken away at intervals, as indicated at 55 in Fig. 2a,'to accommodate the aforesaid lugs 26 and bolts securing the track 5 to frame member H.

The inner course of belt 4! is yieldingly pressed against the bobbin head rings by a similar angle iron attachment but, in this plurality of separate angle iron sections 60, as indicated in Figs. 2 and 2a. Each of these angle irons extending along the belt 4| is disposed on the track 6 (Fig. 6) and has elongated slots 6| receiving bolts 62 passing through the slots and into the track 5 (Fig. 5). In the case of the angle irons 60, however, the bolts 62 are not clamped tightly on the angle irons, but when screwed home, permit freedom of sliding movecase, comprising a ment of the angle iron 60 on the track 6 toward and away from the bobbins to cause the belt M, in turn, to press against the bobbin head rings. To obtain a yielding pressure I provide a plurality of spring pressure members 70 spaced at intervals lengthwise of the tracks, as indicated in Fig. 2. The details of these members are shown in Fig. 6 and each comprises an angle iron 1! bolted to the frame member l2 as by the bolt 52 and having an upstanding member 73 through which pass freely the bolts 75 (Fig. 2a) protruding from the belt-engaging flanges 18 of the angle irons 66. Interposed between the said flanges and the flanges 13 of the angle irons H are coiled springs 16 which yieldingly urge the angle irons Gil and particularly the flanges 18 thereof, toward the bobbin heads. The inward movement of the angle irons 60 may be limited by nuts 80 received on the screw threaded ends of the bolts 15.

The purpose of providing a number of separate spring pressed angle irons 60 lengthwise of the belt M, rather than a single angle iron, is to insure that slight inequalities in the outer diameters of the rings on the individual bobbin heads do not interrupt the feed of the bobbins through the machine. Thus, if one long angle iron were provided, the distance between the belts might be determined by the external diameter of the At the inlet end of the machine, as indicated at 2H] in Fig. 1 and as shown in detail in Figs. 9-11 inclusive, I provide a cutter element for cutting oif unusually long strands of yarn which may be hanging from the bobbins, in combination with guiding elements for directing the strands of yarn to the cutter.

The cutter 210 is of a common type having cooperating toothed edges which reciprocate relative to each other as in the ordinary hair clipper. The particular construction of the cutter forms no part of my invention and accordingly need not be described. The shaft which drives the cutter has a bevel gear 2!! secured to its end, which The clipper 2 I is supported by suitable brackets from the frame l of the machine, as indicated, to position the cutter a predetermined distance below the tracks of the inlet chute, depending upon the length of yarn to be severed, and intermediate the tracks, as indicated in Fig. 9.

U-shaped wire strip 220 secured to the angle irons 3| and 32 of the chute 2 by screws, and a pair of flaring guide strips 225 secured to the angle irons 3| and 32 on each side of the tracks and of the U-shaped guide 220 to form a mouth delivering depending strands of yarn into the U-shaped guide member 220 and thence to the cutter 210.

As the bobbins are moved longitudinally of the removed, which usually 'tion indicated at I 00 in Fig. 5, are acted on by three agencies to remove the yarn. First, the weight of the yarn itself is frequently sufiicient to commence the unwinding of the silky yarn when the bobbin is supported in pendent position with tip lowermost. Second, I may provide a plurality of compressed air jets disposed along the path of travelof the bobbins to direct streams of compressed air against the yarn remnants tobe removed. These jets may suitably comprise a plurality of orifices formed in compressed air pipes I95 which are secured, as by brackets I95 (Fig. 5) to the inner upright faces of the frame members II and I2 and the orifices in the air pipes I95 should be so positioned as to direct streams of air against the bobbins in the downwardly inclined directions indicated in Fig.5. The pipes I95 communicate with a supply of compressed air in any suitable manner such as by the pipes I01 (Fig. 3).

The yarn ends which are thus carried downwardly by the combined effect of gravity and compressed air, may be engaged by a third agency in the form of a rotating cylinder M9 on the periphery of which is disposed a number of longitudinally extending brushes II I (see also Fig. 3). Engagement of the yarn ends by these brushes causes the yarn to wind up on the surface of the cylinder and complete its removal from the bobbins.

It will be observed that after the yarn end of an individual bobbin has first been caught by a certain portion of the periphery of the cylinder IIO, continued movement of the bobbin through the machine, as induced by the travelling belts, causes the bobbins to move out of vertical alignment with that portion of the cylinder which has engaged the depending yarn. To prevent canting of the bobbins as a result of this movement, I provide the guide strip I25 (Fig. 6) which is at least coextensive with the cylinder I II]. The said guide strip I25 comprises merely a piece of metal which rests on the flat tops of the bobbin heads, as indicated in Fig. 5, and by its own weight maintains the bobbins in a substantially vertical position but with pressure insuflicient to cause the lowermost ring 1 to jam against the tracks 5 and 5. The strip I25 may conveniently be secured to the frame of the machine over the course of the bobbins by being bent upwardly and back on itself at its opposite ends, as indicated at I26 and I21 in Fig. 1. To permit entrance of the bobbins eneath the strip I25, the entering bent end I25 is supported by the bracket I28 straddling the tracks, as indicated in Fig. 6, and secured to the frame members II and I2 by the bolts I30 and I29. The end I26 is secured by bolt I35 and nut I35 (Fig. 4) to the bracket to support the entering end of the strip I25 with a slight clearance above the bobbin heads. With the exception of this supported entering end,.the guide strip rests by its own weight on the bobbin heads. Intermediate its ends, the strip I25 is maintained in aligned position over the tracks, as indicated in Fig. 5, by a spindle I40 protruding from the upper surface of the strip I25 and passing freely through an aperture in the bracket I iI secured to the frame members II and I2 in a manner similar to the bracket I28. The spindle I40 has an enlarged head I42 which prevents the strip I25 falling down between the belt courses when no bobbins are passing through, but does not relieve the bobbin heads of the weight of the strip I25.

Similarly, at its outlet end I21 the strip is positioned over the bobbins by a bracket I45 (Fig. 1) receiving freely a spindle projecting from the top of the end I21 of the strip, thereby permitting the strip to rest on the bobbin heads by its own weight.

As stated above, the pulleys 43 and 45are power driven to drive the belts 49 and 4I. To insure equal speed of the belts, the pulleys have the same diameter and the pulleys 43 and 45 are geared together by the similar intermeshing gears I59 and I5I which, as indicated in Fig. 3, are disposed at the lower extremities of the vertical shafts 41 and 49 to the upper ends of which the pulleys- 43 and 45 are secured. To drive the shaft 49 from an electric motor I53 the gear I5I on shaft 49 meshes with idler I61 engaging gear I55 fixed on shaft I64 which (Fig. 1) has secured to it the large bevel gear I63 meshing with bevel pinion i52 on horizontal shaft I95. The shaft IE9 is rotated by a large pulley I59 over which runs a belt 158 extending around a smaller pulley I51 fixed to shaft I56, which shaft is driven by the belt I54 extending around pulley I55 on shaft I55 and a pulley on the shaft of the motor I53.

The cylinder H0 is mounted on the aforesaid shaft I59 which is power-driven from the motor I53 by the belts above described to rotate the cylinder.

As indicated in Fig. '7, my apparatus includes mechanism for counting the stripped bobbins as they are expelled from the mouth I0 of the track and fall into a suitable receptacle. This device consists of a small cylindrical roller I19 rotatably mounted in the forked arm I'II to project over the track 5 and slightly into the path of travel of the bobbins for engagement by the rings 1 on the bobbin heads (see also Fig. 8). The forked arm i'II is secured as by rivets I12 to a strip of spring steel I13 near one end thereof, the other end of the strip being secured as by rivets I14 to a bracket I15, suitably secured to the track 6 to dispose the strip I13 substantially parallel to the path of travel of the bobbins. At its end adjacent the roller I10 the strip I13 carries riveted toit a shorter length of spring steel I89 having a. nub I8I engaging a plunger I82 extending into the box I85 of an electric contact device of any suitable nature. The plunger I82 may be mounted on one end of a short piece of electrically conducting spring steel I83, the other end of which is secured to the binding post I85 from which the lead 204 extends. The spring strip I83 has at its extremity opposite the binding post I85, an electric contact I81 which co-operates with a contact I88 on the extremity of a companion electrically conducting spring strip I89 secured at the binding post I95. The wire EQI from the binding post i9ii leads to a suitable source of current 209 which is connected in series with any suitable electric counting device 253i well known in the art, through which the circuit is completed by the aforesaid lead 294. It is apparent from this construction that depression of the spring strip I13 upon movement of the roller I19 by a passing bobbin will close contact between the members I81 and I88 to actuate the counter 20L By this mechanism for closing electric contact upon the passing of a bobbin, I insure not only that the progress of the bobbins through the machine is not impeded by the roller I15, but I also insure actuation of the counter, regardless of slight variations in the outer diameter of the rings on different bobbins.

In Figs. 12 to 14 inclusive I have shown a -modified embodiment of my invention which is perhaps best adapted for use where the heads or rings of the bobbins vary considerably in size. In this construction the belts 349 and MI are driven from pulleys 342 and 344 just as in the embodiment first described and the track 355, corresponding to the track 5 of the first embodiment may be secured to the frame member 3II in the same manner. This track supports the same type of strip 350..for backing up the belt 340. In this embodiment, however, the track 306 differs from the track 6 in that it is formed of a large number of sections, each shaped as indicated in Fig. 14 and having a flange portion acting as the track 306, a web 318 integral with the track 386 for backing up the belt, and a turned over flange 379 for guiding the upper edge 'of the belt. Each of these track sections is provided with a pair of feet 380 which slidably rests on the angle iron frame member 3| 2.

To press yieldingly these track sections toward the bobbins, the vertical Web 318 is provided with a cylindrical member 390'received in a tubular socket 391 of a bracket 394 secured to the frame member 312 by a bolt 392. A spring 393 encircling the socket 35 of the bracket and extending between the web 318 of the track member and the bracket 394 yieldingly urges the track section and belt toward the bobbins and this movement may be limited by a stop screw 400, as indicated.

By so providing one of the tracks in sections, not only are the belts yieldingly pressed toward the bobbins at many places so that a substantial variation in the width of the bobbin heads is ineffective to interrupt the feed, but the tracks themselves may vary in their spacing depending upon the varying protrusion of the bobbin rings.

By the provision of the flange lip 319 on the top of the belt engaging web 318 I insure that the belt 34| does not ride up on the bobbin rings as might sometimes happen. Of course a similar flange may, if desired, be provided on the member 350 on the opposite side of the track.

I claim:

1. In a machine for stripping bobbins, the combination of a pair of tracks spaced apart to support, between them, bobbins in pendent position with their tips lowermost, at least one of said tracks being in sections and having means yieldingly urging the track sections toward the opposite track, and bobbin engaging means movable longitudinally of the machine above the tracks for feeding bobbins so supported.

2. In a bobbin stripping machine, the combination of spaced tracks for supporting the bobbins in pendent position with their tips lowermost, movable band elements having oppositely disposed courses extending above and substantially parallel to the tracks to engage the sides of bobbin heads so supported, and means relatively urging the band courses toward each other to effect yielding pressure of the band courses against the bobbin heads.

3. In a bobbin stripping machine, the combination of spaced parallel tracks for supporting the bobbins in pendent position with their tips lowermost, movable band elements having oppositely disposed courses extending above and parallel to the tracks to engage the sides of bobbin heads so supported, and means relatively urging the band courses toward each other for yielding pressure of the band courses against the bobbin heads, comprising a rail contiguous to one of the band courses to restrain movement of that band course laterally away from the track, and means yieldingly urging the opposite band course toward the first band course.

4. In a machine for stripping bobbins, the combination of spaced tracks for supporting the bobbins in pendent and vertical position with their tips lowermost while the yarn is being removed therefrom by unwinding the yarn over the tips of the bobbins, a plurality of air jets disposed along the tracks for directing streams of air downwardly and against the bobbins so supported to blow yarn remnants, on said bobbins, downwardly beyond the tips thereof, and means traveling lengthwise of the tracks for feeding the bobbins along the tracks whereby to move the bobbins through the air streams issuing from said jets.

5. In a machine for stripping bobbins, the combination of spaced tracks for supporting the bobbins in pendent and vertical position with their tips lowermost while being moved one after another along such tracks, a plurality of air jets disposed along the tracks for directing streams of air downwardly and against the bobbins so supported to blow yarn remnants, on said bobbins, downwardly therefrom beyond the tips thereof, and a rotatable stripper roll disposed lengthwise of the tracks and beneath the mov ing bobbins for catching the ends of yarn remnants gravitating and blown from the bobbins and drawing off the remaining yarn from the bobbins.

6. In a machine for stripping bobbins, the combination of spaced tracks for supporting the bobbins in pendent and vertical position with their tips lowermost while being moved one after another along such tracks, a plurality of air jets disposed along the tracks for directing streams of air downwardly and against the bobbins so supported to blow yarn remnants, on said bobbins, downwardly beyond the tips thereof, a rotatable stripper roll disposed lengthwise of the tracks and beneath the moving bobbins for catching the ends of yarn remnants blown from the bobbins and drawing off the remaining yarn from the bobbins, and means adapted to engage the tops of the bobbin heads during their movement along the tracks to prevent canting of the bobbins out 01 their vertical position on the tracks during the stripping.

7. In a machine for stripping bobbins, the combination of spaced tracks for supporting the bobbins in pendent position with their tips lowermost, a plurality of air jets disposed along the tracks for directing streams of air downwardly and against the bobbins so supported to blow yarn remnants, on said bobbins, downwardly beyond the tips thereof, movable bands extending parallel to and above the tracks adjacent the bobbin heads, and means pressing the bands against the sides of the bobbin heads whereby to feed the bobbins along the tracks and through the streams of air issuing from said jets.

8. In a machine for stripping bobbins, the combination of spaced tracks for supporting the bobbins in pendent position with their tips lowermost, a plurality of air jets disposed along the tracks, for directing streams of air downwardly and against the bobbins so supported to blow yarn remnants, on said bobbins, downwardly beyond the tips thereof, a pair of bands extending parallel to'and above said tracks, one band adjacent each track, means for moving both bands at substantially the same rate of speed and means yieldingly pressing the bands against opposite sides of the bobbin heads to feed the bobbins along the tracks and through the air streams issuing from said jets.

9. In a machine for stripping bobbins, the combination of spaced tracks for supporting the bobbins in pendent position with their tips lowermost, a plurality of air jets disposed along the tracks for directing streams of air downwardly and against the bobbins so supported to blow yarn remnants, on said bobbins, downwardly beyond the tips thereof, a pair of bands extending parallel to and above said tracks, one band adjacent each track, means for moving both bands at substantially the same rate of speed, and a plurality of pressure applying members disposed at intervals along at least one of said bands for pressing the bands against opposite sides of the bobbin heads at successive intervals along the bands to feed the bobbins along the tracks and through the air streams issuing from said jets.

10. In a machine for stripping bobbins, the combination of spaced tracks for supporting the bobbins in pendent position with their tips lower most, a plurality of air jets disposed along the tracks for directing streams of air downwardly and against the bobbins so supported to blow yarn remnants, on said bobbins, downwardly beyond the tips thereof, a pair of bands extending parallel to and above said tracks, one band adjacent each track, means for moving both bands at substantially the same rate of speed, a plurality of pressure applying members disposed at intervals along at least one of said bands for pressing the bands against opposite sides of the bobbin heads at successive intervals along the bands to feed the bobbins along the tracks and through the air streams issuing from said jets, a rotatable stripper roll disposed beneath the moving bobbins for catching yarn remnants blown from the bobbins and removing them from the bobins, means to restrain canting of the bobbins on the tracks during the stripping, and a cutter, disposed at the inlet end of the machine, for trimming the yarn remnants before the bobbins are introduced to the air streams.

11. In a machine for stripping bobbins, the combination of a pair of tracks spaced apart to support between them bobbins in pendent position with their tips lowermost, at least one of said tracks having means yieldingly urging the tracks toward each other, and bobbin-engaging means movable longitudinally of the machine above the tracks for feeding bobbins so supported.

12. In a machine for stripping bobbins, in combination, spaced tracks supporting the bobbins in pendent relation by engagement with surfaces on the heads of the bobbins, means engaging the exterior surfaces of portions on the heads above the tracks and having movement lengthwise of the tracks to feed the bobbins along the tracks, and pneumatic means ejecting streams of air against the yarn remnants to be removed below the tracks.

13. In a bobbin stripping machine, the combination of spaced tracks supporting the bobbins in pendent relation with their tips downward, a driven endless band element having a course extending above and substantially parallel to the tracks to engage the heads of bobbins so supported, and means relatively urging the band element and bobbin heads together to effect driving engagement of the bobbin heads with the band element.

i i. In a bobbin stripping machine, the combination of spaced tracks supporting the bobbins in pendent relation with their tips downward, a driven endless band element having a course extending above and substantially parallel to the tracks, and means causing the endless band element to propel the bobbins by pressing such elements surface against portions on the exterior of the heads of bobbins so supported.

15. Apparatus for stripping bobbins including in combination means supporting the bobbins in pendent and vertical relation through engagement with the outside surface of portions on the heads thereof, and defining a path, means drawing off axially of the bobbins, the yarn remaining thereon, and an endless traveling surface pressing against portions on the heads of the bobbins and by such engagement moving the bobbins along such path while the yarn is being unwound therefrom.

16. Apparatus for stripping bobbins, including an endless traveling surface engaging the outside surface of portions on the heads of bobbins and thereby moving the bobbins along a path while hanging by their heads while the remaining yarn on the bobbins is being unwound over the tips thereof, and mechanical means acting to prevent the bobbins from tilting out of vertical relation. 17. Apparatus for stripping bobbins having in combination spaced tracks supporting the bobbins in pendent, vertical, and laterally movable relation by engagement with surfaces in connection with portions on the heads thereof, pneumatic means blowing downward the yarn remnants on the bobbins, means removing the remaining yarn from the bobbins by unwinding it over the tips of the bobbins while pendent from the tracks, and means extending below and along the tracks on both sides of the pendent bobbins to confine the effect of the blast to the immediate vicinity of the barrels of the pendent bobbins.

18. Apparatus for stripping bobbins including in combination spaced tracks supporting the bobbins by their heads in pendent vertical relation for lateral sliding movement along the tracks under the push of the following bobbins, means preventing the heads of the bobbins thus pushed from tilting or rising from the tracks, and a roll acting to strip the bobbins by catching and unwinding the yarn remnants therefrom while thus supported by the tracks and prevented from tilting out of vertical relation and. from rising, the axis or the periphery of the roll being in a plane parallel with the tracks and the roll extending along the tracks beneath the bobbins so that the point of engagement of the roll with the yarn from any one bobbin travels along the roll at substantially the same rate as the bobbin travels along the tracks.

LEONARD KLEEB, JR.

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