US2735159A - Bobbin cleaning device - Google Patents

Description

Feb. 21, 1956 H- A. WILSON ET AL 2,735,159

BOBBIN CLEANING DEVICE Filed May 5, 1955 2 Sheets-Sheet 1 INVENTORS HARRY A. WILSON ELMER 0. MIX

ATTORNEY \aaa agi H. A. WILSON ET AL BOBBIN CLEANING DEVICE Feb. 21. 1956 Filed May 5, 1955 M v m m m mM R N c w E T w A United States Patent BOBBIN CLEANENG DEVICE Harry A. Wilson, South Spencer, and Elmer C. Alix, Charlton City, Mass, assignors to The A & W Machine Company, Charlton City, Mass., a corporation of Massachusetts Application May 5, 1955, Serial No. 506,216

4 Claims. (Cl. 2819) This invention relates to improvements in bobbin cleaning devices and has particular reference to the provision of a device for removing waste weft from bobbins which have been ejected from the shuttles of a weft replenishing loom.

One of the principal objects of the invention is to provide a simple, eflicient and automatically functioning device for removing waste weft from bobbins of weft replenishing looms subsequent to their being ejected from the shuttles and to the replacement thereof with a fresh bobbin in the shuttle.

Another object is to provide a bobbin cleaning device of the above character embodying spaced longitudinal portions having means thereon for automatically gripping and winding the waste weft thereon and further embodying an intermediate reciprocating member for ejecting said waste weft from said longitudinal portions.

Another object is to provide a bobbin cleaning device for removing waste weft from bobbins after having been ejected from the shuttles of weft replenishing looms whereby the loose ends of the weft, whether coarse or fine, will be more positively and automatically gripped and removed from the bobbins and simultaneously be automatically displaced from the device whereby it is enabled to function continuously to clean ejected bobbins without becoming clogged.

Another object is to provide a device of the above character which will function in response to an operative part of the loom thereby requiring no additional motion imparting means.

Other objects and advantages of the invention will become apparent from the following description taken in conjunction with the accompanying drawings in which;

Fig. 1 is a top plan view of the device embodying the invention;

Fig. 2 is a fragmentary end view of the device;

Fig. 3 is a fragmentary plan view of the end portion of the means for ejecting the weft from the bobbin cleaning device;

Fig. 4 is an enlarged sectional view taken as on line 44 of Fig. 1 and looking in the direction indicated by the arrows;

Fig. 5 is an enlarged sectional view taken as on line 5-5 of Fig. 1 and looking in the direction indicated by the arrows;

Fig. 6 is a continuation of the sectional view of Fig. 5 taken through the forward end of the device;

Fig. 7 is a fragmentary sectional view illustrating a modified form of the invention; and

Fig. 8 is a fragmentary top plan view of a further modification of the invention.

Referring more particularly to the drawings wherein like characters of reference designate like parts throughout the several views, the device embodying the invention, as shown in Figs. 1 through 6, comprises a main supporting bracket 10 having a bearing 11 secured thereto by a threaded portion 12 threadedly received within a threaded ice opening in the bracket 10. A binding nut 13 rigidly secures the bearing 11 to the bracket 10.

In the bearing 11 there is rotatably mounted a tubular member 14 having a pulley 15 secured thereto by a set screw or the like 16. The tubular member 14 has an enlarged portion 17 on the end thereof opposite the pulley 15 which carries a pair of spaced fingers 18 to which long and slender channeled portions 19 are attached by bolts or the like 20.

The channeled members 19 are spaced a considerable distance apart adjacent their ends attached to fingers 18 and taper forwardly and inwardly toward each other, as illustrated in Figs. 5 and 6, and are held in positive spaced relation with each other by a slide block 21 held between said outer ends of the channeled members 19 by a screw or the like 22. The slide block 21 is fitted within a longitudinal slot 23 formed in the outer end of a blade member 24 lying between said channeled members 19 and secured at its inner end 25 to the reduced end 26 of a rod 27 slidably mounted in the tubular member 14.

The rod 27 has an outer reduced end 28 extending through the inner portion of a roller bearing 29 and secured thereto by a nut 30 attached to the outer threaded end of the portion 28. The bearing 29 is provided with diametrically opposed pins 31 which lie within the slotted ends 32 of a yoke 33 which straddles said roller bearing 29. Inwardly of the roller bearing 29 and mounted on said rod 27 there is a resilient buffer member 34.

The yoke 33 has an intermediate spacer member 35 which forms the base of the yoke and has oppositely extending perforated finger portions 36 and 37 which straddle a bearing 38 carried by the bracket 10 and to which said finger portions 36 and 37 are pivotally connected by a bolt or the like 39. The lower finger 37 has an integral arm 40 extending outwardly thereof adapted to be operatively associated with a moving part of the loom as shown and described in applicants co-pending application, Serial #419,518, filed March 29, 1954. For example, if it is associated with the lay of the loom it will be moved back and forth about its pivot 39 as the said lay swings rearwardly and forwardly during the operation of the loom. As the arm 411 is moved forwardly and rearwardly in response to the movement of the lay of the loom, the rod 27 is reciprocated in the tubular member 14 and thereby causes the blade 24 to be reciprocated as will hereinafter be described in detail.

The channeled members 19 are each provided with strips of card or napper cloth 41 which are secured to said channeled members by rivets or the like 42 extending through bars 43 and the base of said channeled members at spaced points longitudinally thereof. The card or napper cloth, as shown in Fig. 4, is preferably provided with relatively straight pointed wire portions 44 which extend outwardly beyond the side edge portions 45 of the channeled members 19 throughout the major portion of the area of said channeled portions and thereby provide closely related wire-like tooth portions.

The blade 24 along the opposed longitudinal sides thereof is provided with toothed portions having forwardly and outwardly tapering side walls 46 and substantially normally disposed forward end walls 47. The said toothed portions extend outwardly beyond the sides of the channeled portions and blend into an outer pointed end 48, see Figs. 1 and 3.

The bearing 11 has a housing portion 49 attached thereto by a reduced threaded connection 50. The said housing surrounds the inwardly attached ends of the channeled members 19, fingers 18 to which they are attached and the enlarged portion 17 of the tubular member 14, see Fig. 5.

It has been stated above that the blade 24 is reciprocated as the arm 40 is moved forwardly and backwardly about the pivot 39 by the motion of the lay of the loom in a manner similar to the devices shown and described in applicants co-pending application Serial #419,518, filed March 29, 1954. It being understood, of course, that suitable mechanism such as described in said co-pending application is employed for bringing about this result. In this manner the blade 24 is reciprocated intermediate the channeled members 19 and during this reciprocation the slotted end portion 23 moves forwardly and rearwardly relative to the slide block 21. During the reciprocating action of the blade, it is also rotated with the channeled members 19 by the pulley 15 which is attached to a suitable source of power by a belt or the like 52. The rotation of the pulley 15 also causes the card or napper cloth 41 carried by said channeled members to be rotated.

The device operates as follows:

As the bobbin is ejected from the shuttle, as described in detail in applicants above-mentioned co-pending application, the loose end of the weft on the bobbin falls over the rotating strips of card or napper cloth and is immediately wound thereon. Simultaneous to the rotation and the winding of the weft on the card or napper cloth, the notched edges of blade 24 which is simultaneously being reciprocated will engage the loops of weft wound on the napper cloth and will intermittently and progressively cause said looped weft to be advanced toward the pointed end 43 and be ejected from the device.

The fact that the ends 44 of the wires are relatively pointed, they will have a more positive gripping action with the weft to cause the said Weft to 'wind thereon in a plurality of adjacently related loops. The outwardly tapering side portions 46 of the toothed portions of the oscillating blade 24 will cause said toothed portions to slide rearwardly of the loops and upon movement in the opposite direction the normally related ends 47 will cause the toothed portions to engage the loops and push them toward the pointed end 48 intermittently and progressively as stated above. The fact that the pointed end 48 moves rearwardly and forwardly of the pointed ends of the channeled members will cause the waste weft to be completely ejected from the bobbin cleaning device.

In Fig. 7 there is shown a slight modification wherein instead of attaching the strips of card or napper cloth inwardly of the channeled portions by bars 43, the said napper cloth is secured therein by a layer of adhesive 53 and the wirelike toothed portions will thereby extend throughout the entire area of the width and length of said channeled portions. In this instance the outer ends of the Wirelike toothed portions 54 are bent sidewise slightly in the direction of the rotation of said napper cloth. This has been found to increase the gripping action thereof with the weft regardless of whether the weft is relatively thick or fine in texture.

It is to be understood that card or trapper cloth, such as shown in Fig. 7, might also be attached to the channeled members by the bars 43 if desired, and likewise the card or napper cloth 41 might also be secured in the channeled portions 19 by adhesive such as shown at 53.

The fact that the respective channeled portions and likewise the card or napper cloth are tapered outwardly and inwardly toward each other increases the function of the toothed portions along the opposed side edges of the blade 24 to more positively function in ejecting the weft wound on said strips of card or napper cloth.

In Fig. 8 there is shown a slight modification of lever arrangement wherein an'arm 54 similar to the arm 40 is pivotally attached at 55 to a link 56 also pivotally attached at 57 to the bracket 10. The arm 54 has an angularly disposed threaded portion 58 adjacent its pivotal connection 55 to the link 56 and to which is threadedly attached a member 59 having an annular portion 60 carried by the outer end thereof. Secured internally of the annular portion 60 is a bearing 61 having an outer ball face rotatably mounted in said annular portion. The bearing 61 has a central opening therein through which the reduced threaded end 28 of the rod 27 extends and is secured to said bearing 61 by a nut or the like 62 similar to the nut 30. As the arm 54 is reciprocated back and forth by engagement thereof with the lay of the loom as set forth in applicants co-pending application mentioned above, the member 59 which is attached thereto and which responds to the movement of the arm 54 will cause the rod 27 to be reciprocated. The link 56 enables the rod 27 to be reciprocated in a relatively straight line path of movement and thereby reciprocates the blade 24 simultaneous to the rotation thereof. The reciprocating and rotary motion is imparted to the blade 24 in a manner similar to that set forth in applicants co-pending application referred to above. A

From the foregoing description it will be seen that simple, efficient and economical means have been provided for accomplishing all of the objects and advantages of the invention. It will be apparent that many changes may be made in the details of construction and arrangement of parts shown and described without departing from the spirit of the invention as expressed in the accompanying claims. Therefore, it is to be understood that all of the matter set forth as shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having described our invention we claim:

1. A device for removing waste weft from bobbins comprising relatively long and narrow strips of material supported in spaced back-to-back relation with each other and having closely related teethlike members extending outwardly of the exposed sides thereof, a relatively long and narrow blade intermediate said long and narrow strips of material having opposed toothed edges extending outwardly of the opposed sides of said long and narrow strips of material, means for rotating said strips of material and said blade simultaneously as a unit and means for imparting a reciprocating movement to said blade during said rotation.

2. A device for removing waste weft from bobbins comprising rotatably supported relatively long and narrow strips of material having closely related wirelike tooth portions thereon, said relatively long and narrow strips being in spaced back-to-back relation with each other and having a long and narrow bladelike member having opposed toothed edges lying therebetween with said toothed edges extending outwardly of the opposed sides of said long and narrow strips, the respective teeth on said edges each having forwardly and outwardly tapering portions and substantially normally disposed front edges, means for rotating said strips and said blade simultaneously and means for imparting a simultaneous reciprocating move-. meut of said blade relative to said long and narrow strips of material.

3. A device of the character described comprising a rotatably supported tubular member'having long and narrow channeled portions secured thereto in spaced backto-back relation with each other and terminating in outer pointed end portions, relatively long and narrow strips of material having closely related teethlike members socured in said channeled portions, a relatively long and narrow bladclike member slidably supported intermediate said channeled portions-having opposed toothed edges extending throughout the length thereof and outwardly of the opposed sides of the channeled portions andterminating in a pointed end of a size larger than the pointed ends of said channeled members, means for imparting a rotary movement to said channeled members and bladelike member and means for reciprocating said bladelike member,

intermediate said channeled portions by an amount sufiicientto move the pointed end thereof inwardly and outwardly of thepointed ends of the channeled members.

4. A device for removing waste weft from bobbins comprising a bracket having a bearing therein, a tubular member rotatabiy supported in said bearing said tubular member having long and narrow strips of material having closely related teethlike members thereon secured thereto in fixed spaced back-to-back relation with each other and being adapted to be rotated with said tubular member, a rod slidably supported in said tubular member and having a relatively long and narrow bladelike member secured thereto and lying between said long and narrow strips of material having the closely related teethlike members thereon, said blade having opposed toothed edges extending outwardly of the opposed sides of said long and narrow strips of material and blending into a tapered outer end portion, said tapered outer end portion being adapted to be moved inwardly and outwardly beyond the outer ends of said long and narrow strips of material having the closely related teethlike members thereon, means for References Cited in the file of this patent UNITED STATES PATENTS Lonzo Aug. 31, 1937 Clark Dec. 25, 1951

Images