Patent Abstract:
The revolving ring on a spinning machine as seen in U.S. Pat. No. 4,023,340 is rotated by a belt encircling the bottom of the ring holder. The drive pulley is located below the ring by the spindle rail. An idler pulley moves outward to compensate for the change in distance between the revolving ring and the drive pulley.

Full Description:
BACKGROUND OF THE INVENTION 
     (1) Field of the Invention 
     This invention relates to textile machines for spinning, twisting and twining, and more particularly for machines with rotating rings. 
     (2) Description of the Prior Art 
     Previous workers in the art have suggested the ring of a spinning machine be rotated. We have patented a machine with a rotating ring, both in U.S. Pat. No. 4,023,340 and 3,738,094. In each of these machines the drive pulley was located on the level approximately horizontal with the point of mid-travel of the base of the ring. The belt from the drive pulley drove a disc which drove the ring by frictional contact. The belt was elastic to compensate for the difference in distance between the drive pulley and the driven disc as the ring rail reciprocated upward and downward along the bobbin. 
     SUMMARY OF THE INVENTION 
     New and Different Function 
     According to this invention the drive belt is trained from the drive pulley on the spindle rail around an idler pulley around a shell which drives four or more rings directly. The idler pulleys are moved out and in to compensate for the difference in distance between the drive pulley and the drive rings. 
     Objects of This Invention 
     An object of this invention is to spin or twist fibrous yarn or continuous filament. 
     Another object of this invention is to provide an improved drive means for rotating spinning rings. 
     Further objects are to achieve the above with a device that is sturdy, compact, durable, lightweight, simple, safe, efficient, ecologically compatible, energy conserving, and reliable, yet inexpensive and easy to manufacture, install, adjust, operate and maintain. 
     Other objects are to achieve the above with a method that is ecologicslly compatible, energy conservind, rapid, efficient, and inexpensive, and does not require highly skilled people to install, adjust, operate, and maintain. 
     The specific nature of the invention, as well as other objects, uses, and advantages thereof, will clearly appear from the following description and from the accompanying drawing, the different views of which are not scale drawings. 
    
    
     BRIEF DESCRIPTION OF THE DRAWING 
     FIG. 1 is a sectional view showing a spinning machine with an embodiment of our invention attached thereto. 
     FIG. 2 is a schematic perspective representation thereof. 
     FIG. 3 is a half-sectional view of a ring with the drive belt trained therearound. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to the drawing, there is seen illustrated a conventional spinning machine in many respects. Specifically in FIG. 1 of the drawing, there is illustrated bobbin 10 with yarn 12 being wound thereon. The machine has a frame which includes spindle rail 14. The bobbin is on bobbin spindle 11 which is journalled to spindle rail frame for rotation on it. Bobbin belt 16 is a portion of a bobbin driver means located on the frame for rotating the bobbin at high speed. Ring rail 18 is mounted upon the machine for up and down movement or vertical reciprocation relative to the spindle rail 14. This vertical reciprocation of the rail 18 is indicated by a double headed arrow. 
     Those skilled in the art will understand that a machine would have a plurality of bobbins thereon and that the rail 18 surrounds each of the bobbins. 
     Ring 20 is journalled for rotation on the rail 18. Traveler 22 is slidably mounted on the ring for movement around the ring and around the bobbin. Those skilled in the art will understand the traveler on each ring is for feeding yarn onto each bobbin. The ring is mounted upon holder 23 and the holder is journalled to the rail 18 by bearings as more specifically described at a later point. 
     Drive shaft 24 extends the length of the machine, so that it drives a plurality of the rings 20. For each four or more rings there is one shell 32 mounted behind the ring rail 18. The drive shaft 24 is attached to spindle rail 14 by any convenient means, e.g., pillow blocks 28 on a bracket. The shaft 24 is driven by main belt 27 from main cylinder 29 of the frame. 
     Arms 30 extend outward from the underside of the ring rail 18. Each of the shells 32 are journalled upon shaft 34 attached by cap 31 to the ends of the arms 30. Shell drive belt 36 extends from the drive pulley 26 to the shell 32. Ring drive belt 37 goes from the shell 32 to the ring holder 23. Therefore, it may be seen that the rings 20 are driven responsive to rotation of the drive pulley 26, which itself is responsive to main cylinder 29. 
     Rail 18 moves upward and downward and therefore, the distance from the drive pulley 26 to the shell 32 is always changing. Obviously, the belt 36 must be taut to operate properly. 
     We have placed two idler pulleys 38 upon ring idler arm 44 to maintain the belt 36 taut. The idler pulleys 38 are journalled to the arm 44 by shaft 40. Ring arm 44 is pivoted to spindle idler arm 42 adjacent to the idler pulley 38. The pivot of the ring arm 44 is between the pulley 38 and the connection of the ring idler arm 44 to the ring rail 18. Spindle arm 42 is pivoted about bracket 43 which is attached to the spindle rail 14 adjacent to the drive shaft 24. The ring arm 44 is pivoted to the ring rail 18 by bracket 45 which is adjacent to the shell shaft 34. The idler arms push the idler 38 out so that the distance from the drive pulley 26 to the idler pulley 38 and the distance from the idler pulley 38 to the shell 32 remains the same regardless of the distance from the drive pulley 26 to the shell 32. This idler arm movement could be accomplished by having a spring biasing either of the arms outward. However, we prefer to move the idler pulley outward by pivoting the two idler arms 42 and 44 between the ring rail 18 and the spindle rail 14. With the arms so positioned, it may be readily seen that the total distance from the drive shaft to the idler shaft and from the idler shaft to the shell is always the same. Also it may be seen for smooth operation, it is necessary for the arms to extend outward slightly when the ring rail 18 is in the full top position. Therefore, it is necessary that the length of the spindle idler arm 42 plus the length of the ring idler arm 44 be greater than the distance from the drive shaft 24 to the ring rail 18. 
     The drive belt 36 is trained over the pulleys as seen particularly in FIG. 2. It will also be understood from FIG. 2 there would be one belt 36 for four or more rings 20. A ring drive belt 37 would be used for each of the rings 20. 
     It should be understood that the idler arms 42 and 44 form a portion of compensating means on the frame for moving the idler pulleys responsive to movement of the ring rail so that the belt is always tight. We move the idler pulleys responsive to the movement of the ring rail so that the total distance from the drive pulley to the idler and from the idler pulley to the rail is always the same and belt is always taut. 
     FIG. 3 shows in some detail as to the way the ring 20 is journaled to the rail 18. Also it will be noted that FIG. 3 does not show the traveler 22 upon the ring 20, however, those skilled in the art will understand this connection. Referring to FIG. 3, it may be seen that the holder 23 has a notch at about the middle of its external surfaces to receive lock ring 46. The inside race 48 of a bearing fits between the ring 46 and shoulder immediately above the race. The top of the sleeve shaped holder 23 has an outwardly extending flange 50. Dust seal 52 is attached to the outer edge of this flange 50 while pad 54 extends between the bottom of the flange 50 and retaining ring 58. The retaining ring 58 holds the outer race 56 firmly in place. Dust shield 60 is attached to the bottom lock ring 46. Thus we have journalled the ring 20 for high speed rotation. 
     A thumb and forefinger eccentric cam brake 62 is attached to the ring rail 18 and close to the flange 50 to stop the ring to piece up broken ends. The cam brake 62 is also seen in FIG. 2, but is omitted from FIG. 1 for clarity. 
     Thus it may be seen that we have provided an improved compensating drive for a ring of a spinning machine. 
     The embodiment shown and described above is only exemplary. We do not claim to have invented all the parts, elements or steps described. Various modifications can be made in the construction, material, arrangement, and operation, and still be within the scope of our invention. The limits of the invention and the bounds of the patent protection are measured by and defined in the following claims. The restrictive description and drawing of the specific example above do not point out what an infringement of this patent would be, but are to enable the reader to make and use the invention. 
     As an aid to correlating the terms of the claims to the exemplary drawing, the following catalog of elements is provided: 
     10 bobbin 
     11 spindle 
     12 yarn 
     14 spindle rail 
     16 bobbin belt 
     18 ring rail 
     20 ring 
     22 traveler 
     23 holder 
     24 drive shaft 
     26 drive pulley 
     27 belt, main 
     28 pillow block 
     29 main cylinder 
     30 arms 
     31 cap 
     32 shell 
     34 shell shaft 
     36 shell drive belt 
     37 ring drive belt 
     38 idler pulley 
     40 idler shaft 
     42 spindle idler arm 
     43 bracket 
     44 ring idler arm 
     45 bracket 
     46 lock ring 
     48 race, inner 
     50 flange 
     52 dust shield 
     54 pad 
     56 race, outer 
     58 retaining ring 
     60 dust shield 
     62 cam brake

Technology Classification (CPC): 3