MXPA97006552A - Main feed rotating device - Google Patents

Abstract

The present invention relates to an automatic sheller feeding device, comprising: a rotating head having first and second opposite sides, a circumferential skirt extending between the sides, a rotating driving support member on the first side of the head the member adapted to fix the head to an outlet of a rotary impeller, for rotating the head in a direction about an axis extending through the sides, the head including a central winding member mounted on the first side of the head and extending along the axis, to an annular outlet opening on the second side of the head, a line winding surface at one end of the winding member, an annular line storage cavity placed inside the head, between the sides and a distance radially outward from the winding member, a line feed passage of 360 degree s having an annular entry aperture positioned radially inward from the line storage cavity and orienting the same, with the line feeding passage extending from the entry opening radially inward towards the winding member and along from the line winding surface, to the outlet opening, the first side of the head defining a first internal surface on one side of the passage and defining the second side of the head a second internal surface on the other side of the ramp

Description

"ROTATING FOOD DEVICE OF MAYAL" FIELD OF THE INVENTION The present invention relates to a rotary device for feeding flail lines commonly used to trim turf, weeds and small thickets.

DESCRIPTION OF PREVIOUS ART Prior flail feeder devices include a rotary head, a rolled flail length, typically an extruded plastic cord confined within the head, and a mechanism for intermittently feeding-the line to one or two flails extending outside of - the head through feeding passages provided in the outer circumference of the head. The most common flail aligner device these devices include a central shock bo-tdn arranged in the head and which is pushed against the ground or other surface to drive a mechanism that gradually feeds stretches of flail line from the head, to reset the length of the flails that have been shortened during use. Another type of flail adjusting device uses a mechanism that extends a distance of one line section each time the gear of the device is slowed down from a high working speed. Problems have been encountered in conven- tional conventional flail feeder devices. The shock button device includes complicated springs, racks and wear parts which during use tend to get stuck with mud, wet grass and the like, so that the device does not dispense additional line to the maya as required. These devices are bulky, include many parts and their manufacture and assembly are relatively expensive. In addition, maintenance of dynamic equilibrium is difficult with these types of devices. The shock-type head operates at high rotational speeds, which require the head to be balanced to prevent undesirable vibrations. The dual drive of the heads to dispense flail line can destroy the dynamic balance of the head. Further, in the case of the shock type heads the flail line is fed from the inside of the roll confined to the head and radially outward through the discharge opening. During feeding of the line, the head is subjected to abrupt jerks that tend to jam the line in the roll and prevent the soft feeding of the line to replace the length of the flail. Fixing a jammed roll requires that the head be disarmed with a cumbersome and time-consuming procedure. The heads with automatic feeding of line - in response to the rotation of the head, have the disadvantage of always feeding additional line to the flail when the speed of operation is reduced, independently of which in fact additional line is needed. In these heads the extra line fed to the flail is cut and wasted each time the high speed of operation of the head is reduced.

COMPENDIUM OF THE INVENTION The present invention consists of a rotary feeding device for flail to cut grass, weeds, small bushes and similar vegetation, being a device that during the use automatically maintains the length of the flail or the flails, without intervention of the operator. The device has an annular storage cavity that surrounds the axis of rotation of the head, and an annular outlet opening on one side of the head that surrounds the shaft within the storage cavity. A roll of flail line is held in the storage cavity and is fed radially in and out of the opening to provide a single flail or a pair of flails extending radially outward from the opening. The line that -from the cavity extends to the opening- is wound around a central column in the opposite direction to the direction of rotation of the head, and is automatically unrolled from the column to increase the length of the flail or the flails in response to the shortening that flails -experience during use. The operation of the flail feeding device automatically maintains each flail with an appropriate working length, without the need for a shock actuator with a gradual advance mechanism, or to stop the head functioning and then resume it to feed line . Inward feeding of the line from the storage cavity to the column and around the same, and then out of the opening, prevents line clogging. The present flail feeding device - can be used with a single flail or, preferably, with two flails that are maintained with a 180 gra-two gap in order to maintain balance and prevent vibration. When the disclosed rotating device is stopped, the line wound around the central column expands and establishes frictional contact with a rotating line guiding member to prevent undue elongation of the flail and wastage of the flail line.

The present head has few parts and can be manufactured inexpensively and be assembled quickly and inexpensively. The simple construction of the device ensures a long service life. The construction with a central annular flap feeding opening prevents the entry of foreign bodies into the head. Other purposes and features of the present invention will become apparent in the course of the following description, especially when it is interpreted with reference to the accompanying drawings illustrating the invention, of which there are three sheets and two embodiments.

DESCRIPTION OF THE DRAWINGS Figure 1 is a vertical sectional view taken through the head of a first embodiment of a flail feeding device according to the invention; Figure 2 is a view taken generally from line 2-2 of Figure 1; Figure 3 is a vertical sectional view taken through the line guiding part shown in Figures 1 and 2; Figure 3A shows the line guiding part - viewed from below; Figure 4 is a horizontal generalized view taken from below of the head shown in Figure 1, parts of the head having been omitted and showing flails and lines wound on the head in a first direction; Figure 5 is a view similar to Figure 4 and shows the line wound on the head in a second direction; Figure 6 is a vertical sectional view of a line cartridge; and Figure 7 is a vertical sectional view of a second embodiment of the flail feeding rotary device and employing a cartridge as shown in Figure 6.

DESCRIPTION OF PREFERRED EMBODIMENTS The first embodiment of a rotary device 10 for feeding flail line is illustrated in Figures -1-5 of the drawings. The device 10 includes a rotary head 12 having opposite circular sides, of which there is an upper 14 and a lower 16, and a cylindrical outer surface 18 joining said sides. A hub 20 includes an upper circular base 22 defining the side 14, and an outer circumferential wall 24 extending from the outer edge of the circular base 22 and partially through the cylindrical surface 18. A cover 26 includes in - its lower part a central circular base 28, and an outer circumferential wall 30 extending from the outer edge of the circular base 28 and partially through the surface 18, the cylindrical walls 24 and 30 are joined together in a circumferential joint 32. The hub and lid can be made of a suitable material, including metal or plastic material. A central column 34 is mounted in the hub 20 and aligned with the axis of rotation 36 of the head 12. Said column, which may be made of metal, accompanies the movement of rotation of the head and includes a cylindrical end-free 38 which extends a short distance outside the side 16 of the head. A threaded extension 40 extends outward from the cylindrical end 38. A rotary drive support part 42 is mounted at the end of the column on the side 14. The support part 42 -is attached to the output shaft of an engine conventional rotary, which may be an electric motor or a gas-fed motor, to impart to the head 12 a rotational movement about the axis 36 in the direction indicated by the bracket 44. When the head describes a rotational movement with a high working speed, a pair of flails extends radially outward from the head to trim grass, weeds, small thickets and similar vegetations as will be described.

An annular cavity 46 for line storage is formed in the head 12 on the inside of the cylindrical walls 24 and 30, and is defined by a cylindrical interior wall 48 of the walls 24 and 30, and an upper wall 50 and an inner wall 52 formed respectively in the hub and lid, and guiding walls 54 and 56 in the form of a truncated cone and extending in an oblique direction from the inner edges of the walls 50 and 52 to approach each other and -extend radially inwardly to approach the axis 36. The storage cavity 46 surrounds the column 34 and the axis of rotation 36. A stepped recess 58 is formed in the cylindrical base 28 and surrounds the end 38 of the column 34. A stepped line guiding member 60 shown in Figures 1-3 is embedded in the recess and surrounds the end 38 of the -column. As illustrated in Figure 1, the outer surfaces of the line guide piece 60 are spaced apart from the interior surfaces of the recess to allow free rotation of the piece 60 in the head 12. The line guide piece 60, which it may be made of metal or other suitable material, it includes within it a cylindrical surface of line braking 62 having a diameter greater than the diameter of the end 38 of the column -which extends through the opening defined by the surface 62. Two parallel line guiding grooves 64 are formed in the bottom surface of the part 60 and extend tangentially outwardly in opposite directions from the opposite sides of the surface 62 and to the outer circumferential surface of the part. See Figure 3A. The grooves 64 are spaced 180 degrees around the piece. When said piece is arranged in the head 12, as shown in Figure 1, the cylindrical guiding surface 66 makes contact with the bottom of the recess 58, to put the piece in position in the head with the bottom of the guiding grooves 64. at the level of the head side 16, to guide the flails along the side. The guide piece 68 of circular shape is screwed onto the end 40 of the column including an annular recess 70 and an outer wall 72 provided with an upper guiding surface 74. The guiding surface 74 extends above the side 16 outwardly of the recess step 58, and is separated from the side 16 at a distance slightly greater than the diameter of the flails rotated by the head 12. The outer edge of the line guide member 60 extends a distance below the surface 74 - inside the annular recess 70 to ensure proper capture of the flails. The surface 74 holds the flails-within the grooves 64. The line guiding part 60 is spaced radially outwardly from the end 38 of the column to define an annular outlet opening 76 at the end of the column. The annular line feed passage 78 extends from the opening 76 a distance within the head along the column 34 and bends 90 degrees away from the column to extend radially outwardly from the same to the annular opening of the column. inlet 80 in the storage cavity 46 between the inner ends -of the walls 54 and 56, as shown in Figure 1. The inlet annular opening 80 is disposed approximately in equidistant relation to the upper wall 50 and -la lower wall 52. The upper wall of the passage 78 is defined by a cylindrical rolling surface of line 82 of the column 34 and the inner surface of the upper base 22. The bottom wall of the passage 78 is defined by a surface of brake 62 and the interior surface -of the bottom base 28. The passage 78 provides an expeditious 360 degree communication between the storage cavity 46 and the aperture 76, and facilitates the Flail line stored inside the cavity can be easily fed to the outlet opening. The width of the line feed passage 78 extending from the column 34 is less than twice the diameter of the line fed through the passage, to prevent sections of the line from crossing each other, and ensures that the line from the storage cavity 46 can be fed smoothly through the passage, make it come out through the opening 76 and reach the two -mayals that extend outward from the head passing through the guide grooves 64, as illustrated. In the adjacency of the column the width of the passage is slightly larger than the diameter of the line. The loading and operation of the flail line feeder device 10 will be described below. The device 10 is loaded with a roll containing two flail line sections of rigid elastic material. This line can be made of extruded plastic material and of the type used in the rotary flail type conventional trimming devices. The line has a rigid flexibility and an inherent elasticity that has to straighten the curves. The empty head is loaded with two flail line sections by unscrewing the guide piece 68 from the column 34 and withdrawing the guide piece 60 from inside the annular recess 58. The ends of a pair of lines to be loaded on the head they are placed side by side and are then extended into the opposite end of the feed passage 78, and pushing them into the interior of the passage, said ends are introduced into the storage cavity 46. During the introduction, the lines are preferably oriented to wind the two flail lines around the cavity in the indicated direction - by the arrow 84 shown in Figure 4, which is the same - direction in which the rotary motion is imparted to the head, such as Arrows 44 indicate this. As a rotation movement is gradually imparted to the head in the opposite direction to that indicated by arrow 44, the two line sections of the yal are fed side by side through the passage 78 and inserted into the storage cavity 46 until the cavity is filled with a line roll 85. The free ends of the flail lines are then held against the column 34 and the guiding piece 60 is again put into position within the recess 58, with the lines extending through the central opening. The two ends are then located 180 degrees opposite to the column, and are bent-away from the column and arranged in the guiding grooves 64 of the part 60, as illustrated in Figure 2. The guiding part 68 it is then crimped again on the end of the column 34 so that the two free ends of the flail line are parallel and extend tangentially away from the column in opposite directions, and spaced apart by 180 degrees. The guiding surface 74 of the part 68 keeps the free ends in position within the grooves and in the adjacency of the side 16 of the head. As illustrated in Figure 1, the cavity 46 has a relatively large capacity and may contain the large-sized roll 85 formed by the two flail line sections. The two flail line sections are wound inside the cavity 46 from the inside thereof without forming tangles. The elasticity of the flail line causes rolls to be held against the outer wall 48 to allow the line from the roll to be easily inserted smoothly into the passage 78, without jamming during operation of the head and the head. lengthening of the flails. Once the head 12 has been loaded with a flail and nailed line as described with the ends of the two lines extended outward from the bottom of the head, the rotary drive motor is set in motion to cause rotation of the head 12 at a working speed around the axis 36 and in the direction of the arrow 44. When the head 12 has been accelerated to a working speed, the two ends of the flail line wound on the head are thrown radially outwardly -from the column 74 to form a pair of sharp flails -86 shown in Figures 1, 2 and 4. The two flail lines extending from the roll 85, through the passage 78 and exit through the opening 76 are tightly wound spirally against each other in the lower interior portion of the passage 78. The two lines 88 are wound within the -passage 78 along the same, from the cavity 46 to the opening 76 in the direction of the arrow 90 shown in Figure 4, opposite the direction of rotation of the head 12, as indicates the arrow 44. When the two lines are wound tightly spirally within the passageway and around the surface 82, as described, the two flails 86 extend tangentially outwardly from the column 34 and in opposite directions so that the unrolling of the flails produced around the rotating column in the direction of the arrow 44 unrolls the line from the column and lengthens the flails. As shown in Figure 4, the lines of the roller 93 are wound around the head 12 in the direction of rotation of the head and the turns 88 are spirally wound within the passage 78 and along the surface at the opposite direction with the lines of the roll 93 connected to the lines in the spiral turns 88 by means of rigid-inverse elbows 92 of 180 degrees. The elbows 92 are strongly curved and each of them is disposed on one side of the column 34. The elbows do not extend through - of the column 34. Because the line has a rigid elasticity and the reverse elbows are strongly curved , the ends of the elbows are pushed towards the column and - they keep the spiral turns together in the passage 78. During the initial rotation of the head 12, the -mayals 86 and the reverse elbows 92 are subjected to forces -centrifuges. The centrifugal forces acting on the mandrels 86 keep the spiral turns 88 tightly against the winding surface 82 of the column. During the initial rotation of the head, flails 86 uncoil from the rotating column and extend in the direction of the arrows 94, and are elongated. The unrolling is caused by the centrifugal forces exerted on the rotating flails. During unwinding, the two coiled line curls of the surface 82 are freely lowered axially along the column and to the opening 76, and an additional line is fed radially inwardly through the elbows. 92 and over the turns 88 from the roll 93. During feeding from the line to the turns, the reverse elbows 92 move around the head in a direction opposite to the direction of rotation of the head, as indicated by the arrows 95. Also, during unwinding, the guide piece 60 -describes in the head 12 a rotational movement in the direction of rotation of the head, as indicated by the arrow 94. The flails 86 lengthen as they unwind. line from the column. Additional line from the storage cavity 46 is wound inside the passage 78, over the turns 88 and on the column. As the flails lengthen, the air produces a drag effect on the extended and rotated flails. This drag effect exerts on the flails forces directed generally in the directions indicated by the arrows 96, opposite the directions of flail unrolling, as indicated by the arrows 94. The flails 86 continue to unroll and lengthen, up to - that the forces of air drag exerted on the Maya prevent them from continuing the unwinding of the line and maintain the length of the flails. Once this-condition is reached, the centrifugal force and the opposing air-pulling force are in equilibrium. The length of the flails-in balance is desirably the normal length that the Maya-of a conventional rotary head. In equilibrium, the reverse elbows 92 are rotated-in the head and centrifugal forces are produced to pull these portions radially outward and away from the -column 34 to tighten the line in spiral turns 88 in the passage 78 and help maintain the turns 88 pressed on the winding surface 82 of the column, to - ensure that the line rotates with the head. The connection between the turns and the surface 82 does not prevent the axial displacement of the turns to go down the column and to the opening 76 during the unrolling and lengthening of the jacks 86. As the flail line is unwound from the column, additional line is fed automatically from the roll 93 through the head 92 and inside the -speeds 88, to keep them turned, as described. Once the head 12 has been loaded with flail line as described and rotated to work speed, the two flails 86 are automatically extended to a working length. The head can then be used to trim. During trimming, the line guiding member 60 holds the two flails 86 in an orientation of 180 grams on the column, in order to maintain the dynamic balance of the head. As the head 12 is used, the ends of the flails are exposed to wear, and, as time passes, line material is cut off from the ends of the flails. When this happens, the drag of the air exerted on the shortened flails is reduced. The shortening of the flails reduces the air entrainment forces as the shortening of the flails reduces the centrifugal forces, with the result that the balance is destroyed and the centrifugal forces untwist the flails from the column. in rotation in the forward direction - from arrow 94, until the lengthening of the flails increases the entrainment of the air to a sufficient degree to restore the balance between the two forces and restores the - long flails. During the simultaneous lengthening of both flails, the guiding piece 60 is rotated about -the column 34 in the direction of rotation of the head 12. If a single flail is shortened, this line -is elongated as described, and the piece 60 is rotated on the head to unwind the other flail a distance around the column, until the balance is set again. In this case, the shortened flail will be slightly shorter than the flail not shortened. Over time, both flails suffer wear and have the same length. The length of the flails is maintained automatically as described during the cut that the head 12 uses, thus eliminating the need for the operator to intervene to maintain the length of the flails and all the working effi ciency of the head. Frequently during trimming operation and upon finishing the trimming work, it is necessary to stop the rotation of the head 12. When the speed of rotation of the head is decreased, the spiral winding of the turns 88 in the passage 74 is relaxed and expands due to the elasticity of the material of the line. When such a thing occurs, the turns found at the lower end of the passage and at the end of the column 38 expand and make contact with the inner brake surface 62 of the guide piece 60, so that this piece can not turn with respect to the coiled turns. At this time the elastic reverse elbows 92 extend between the turns of the line material of the cavity 46 and the turns keep the turns tightly together to keep the turns 88 tightened in the passage. As the rotation speed of the head decreases, the tightly wound turns in the passage prevent the turns at the end of the column from rotating, thus maintaining the guide piece 60 against rotation with respect to the head, so that Line mate is not fed to the flails and the length of -the latter is maintained. The inverse elbows maintain the tension in the turns when the head is put back on and carried to the speed of work rotation, to prevent lengthening of the flails during the new start-up before the balance is restored. The flail line is fed loosely - radially inward from the rolls of the cavity 46, and follows the guiding walls 54 and 56, through the passage end 80 and into the passage 78 without crossing or binding. Once in the passage, the lines are tightly wound together to form spiral turns and move freely through the passage to replenish material removed from the ends of the flails and lengthen the flails. During the operation of the head 12, the guide piece 60 rotates with respect to the head in the direction of rotation of the head as the flail line is fed from the outlet 76 of the turns 88 to lengthen the flails 86. During this rotation, the guiding part rotates -on the outer surfaces of the line turns or windings of the winding 82, which serves as a means of renewable support for the guiding piece. The guide piece is preferably made of a harder material than the plastic material that forms the lines, so that wear on the support occurs in the line material being fed from the head. This wear does not affect the cutting operation and reduces the wear of the guide part. The guiding part rotates in the bottom of the recess 58 in the rotating surface 66. The axial load is low and the wear on this surface is minimal. The head 12 may be mounted on a conventional flail trimmer with a cutter blade disposed at a distance radially outward from the head to-cut out too long flails. Figure 5 illustrates the inside of a head 12 - in which a line has been wound in the cavity 46 in the direction of arrow 98, opposite the direction of rotation of the head, as indicated by arrow 44. Two Flail line sections are rolled in the cavity to lie the cavity. The ends of the line are fed through the passage 78 and exit opening 76. The track pieces are then mounted on the head 12 as described above, with the two ends of the line fitted into the guide grooves 64. and extended outwardly away from the column, as shown in Figure 2. After the initial head rotation of Figure 5, the lines are wound tightly in a spiral-in passage 78, with the lower ends of the lines-wound around the winding surface 82 and in contact with it, as previously described. Whips 86 extend outwardly from the column and the -some of them are adjusted automatically, as described above. The lower ends of the tightly wound coils 88 in the passage 78 are connected to the rolls of line material - stored in the cavity 46 by means of flexible cross portions 100 of curved shape and extending inwardly from the roll 102, follow on one side of the column 34 and join the turn 88 tightly spirally on the opposite side of the column. When the rotation movement of the head decreases until it ceases to function, the crossed elbows 100 tend to adopt a straight shape and tend to open spiral turns 88, loosening the turns present in passage 78, and can then allow rotation re-lative of the guiding piece with respect to the head. Such rotation unwinds short stretches of line from the column and lengthens the flails short distances beyond the equilibrium positions. Figure 6 illustrates a ma yal line cartridge 104 adapted to be loaded on the head 106 shown in Figure 7. The cartridge includes a cylindrical wall 108 having a pair of annular ridges 110 extending radially inward at the edges. top and bottom of the cylindrical wall. The wall and the annular flanges define an interior space in which two flail line sections are pre-rolled to form a roll 112, which free ends 114 extend outwardly through the center of the cartridge. The head 106 is similar to the head 12, except that the lid 26 is removable from the hub 20 in the joint 32, to open the storage cavity 46 in order to receive the cartridge 104 with the previously formed roll 112. The cartridge is preferably provided with marks, such as for example, an arrow extended around the outer surface of one of the annular ridges 110, to indicate the proper orientation that the cartridge must have on the head, so that during use, inverse elbows 92 are formed in portions of the line extending inward and reaching the spirally wound turns in passage 78, as shown in Figure 4. The cartridge with the line roll The pre-formed portion is loaded into the head 106 by removing the guide pieces, as described above, by opening the head in the joint 32, and then placing the cartridge 104 in the portion of the storage cavity 46 formed in the hub. The free ends 114 of the line are then lying along the central surface of the hub and along the end of the column 34. These ends are fed by the central opening of the lid 26, which is then placed. on the cube to close the head. The guiding pieces 60 and 68 are then placed again on the head as described above. The mark provided in the cartridge 104 facilitates the placement of the cartridge in the head with the roll contained in the cartridge wound in a direction opposite to the direction of rotation of the head, to form inverse bends during operation. Once the cartridge has been arranged in the head 106 as described, the head is rotated by the driving means and the length of the two flails is extended and adjusted automatically, as described above. Each of the rotary flail feed devices includes a pair of raayales oriented at 180-degrees with respect to the column 38. Two flail heads are dynamically balanced and operate smoothly. However, if desired, the described heads can be made -function with a single flail, whose length is adjusted and lengthened automatically as already explained. The line guide piece 60 is not required to maintain the proper flail length and may be omitted if desired. While I have illustrated and described my invention in relation to flail feeding devices which are particularly profitable for mowing grass, weeds and small thickets, it will be understood that this is capable of modification, and I do not wish, therefore, to be limited to the exact details. expressed, but I wish to dispose of such changes and alterations as may fit within the scope of the following claims.

Claims (41)

1. A sheller feeding device comprising a rotary head having opposite sides, a head support member, adapted to fix the head to a rotary impeller for rotating the head about an axis in a direction of rotation; an annular-line storage cavity within the head that extends around and that is positioned at a distance radially away from the axis; a line winding member fixed to one side of the rotary head with the head, the winding member extends along the axis to one end of the other side of the head; a line winding surface at the end of the winding member adjacent to the other side of the head; an annular outlet opening on the other side of the head extending around the end of the winding surface; and a 360 degree line feed line extending from the storage cavity, past the winding surface to the exit opening.

A device according to claim 1, wherein the head includes a plug on one side - of the head having an inner plug surface and a cover on the other side of the head having an inner surface of cover, the inner surfaces extend circumferentially around the axis and define the feed passage of the line.

3. A device according to claim 2, including a joint placed in the outer circumference of the head, securing the plug and the cover together.

A device according to claim 2, wherein the storage cavity of the line includes separate upper and lower walls and wherein the feed passage of the line opens towards the middle of the cavity between the walls.

5. A device according to claim 4, wherein the cavity includes a guide wall of the inclined line extending to the feed passage of the line.

A device according to claim 1, wherein the feed passage of the line includes a first portion positioned adjacent the outlet opening extending essentially parallel to the axis, a fold away from the axis and a second portion that it extends to the storage cavity.

7. A device according to claim 1, including a line direction member-mounted rotatably on the other side of the head, the member surrounds the end of the line winding member and has a surface of brake contact of the line remaining above the winding surface and a first line guide positioned radially outward -from the contact surface of the brake.

8. A device according to claim 7, wherein the line steering member includes a second line guide, the guides are positioned 180 degrees across from one another.

9. A device according to claim 8, wherein the guide comprises a groove, the grooves extend parallel to each other and tangentially away from the outlet opening in opposite directions.

10. A device according to claim 9, which includes a guide member attached to the end-of the line winding member and which is above the line steering member.

11. A device according to claim 1, wherein the line feed passage includes a 90 degree bend and empties into the inner wall of the storage cavity.

12. A device according to claim 1, including an annular cartridge of the threshing line placed in the storage cavity.

13. A device according to claim 1, wherein the winding member of the line - comprises a cylindrical post.

14. A device according to claim 1, which includes a first continuous stretch of de-scaling line, the length of the threshing line has a coiled bobbin of large diameter in the threshing storage cavity, a first portion extending from -the winding coil radially inwardly. towards the feeding passage of the line to the winding surface, a small-diameter coil wound on the winding surface of shelling in the direction opposite to the direction of head rotation and a second-portion extending outwardly from the outlet opening to form a shearing device.

15. A device according to claim 14, wherein the small diameter coil extends radially outwardly from the axis.

16. A device according to claim 14, wherein the first portion includes a -posterior circuit positioned on one side of the winding member.

17. A device according to claim 14, wherein the width of the feed passage of the line is less than twice the thickness of the threshing line.

18. A device according to claim 14, which includes a second continuous length of threshing line having a large diameter rolled spool-in the threshing storage cavity, a first per cidn extends from each rolled spool. radially inward towards the feed passage of the line to the winding surface, a small diameter coil wound on the winding surface of shelling between the coils of the first section of the de-graining line and a second portion which is extends out of the outlet opening to form a sheller.

19. A device according to claim 18, wherein the width of the feed passage of the line is less than twice the thickness of the line of -out.

20. A device according to claim 19, which includes a line steering member - rotatably mounted on the head surrounding the line winding surface and defining a brake contact surface of the line that it lies above the winding surface, and a pair of line guide openings spaced approximately 180 degrees from that member, the rasters extend through the openings.

21. A device according to claim 20, wherein the guide openings of the line comprise parallel grooves extending tangentially away from the outlet opening.

22. A device according to claim 21, which includes a guide member mounted on the end of the winding member that is above the directing member of the line.

23. A sheller feeding device-in accordance with claim 1, wherein the feed passage of the line extends radially to -into from the storage cavity.

24. A self-draining feedstock comprising a rotary head having opposite sides; a circumferential skirt that extends between the sides; a plug on the first side; a cover - on a second side; a joint or joint between the plug and the cover, a rotary drive support member on the head side of the head is adapted to fix the head to an outlet of the rotary impeller to rotate the head in a direction around the head. shaft that extends through the sides; the plug includes a central rolling member extending along the axis to an annular outlet opening in the cover on the other side of the head; a winding surface of the line at the end of the winding member; a storage cavity of the annular line placed inside the head-between the plug and the cover and a radially-away distance from the member, a feed passage of the line unobstructed in 360 degrees extending from an opening of annular inlet facing the storage cavity of the line radially inwardly to the winding member and along the winding surface of the line to the outlet opening; the plug defines a first interior surface on one side of the passage and the cover defines a second interior surface on the other side of the passage.

25. A device in accordance with claim 24, including a line steer member rotatably mounted on the cover that surrounds the end of the winding member.

26. A device according to claim 25, which includes a guide member mounted on the end of the winding member and which is above the direction of the line direction member.

27. A device in accordance with claim 26, wherein the line steering member-includes a brake contact surface of the line remaining above the winding surface and a first line guide. .

28. A device according to claim 27, wherein the line steering member includes a second line guide 180 degrees apart -from the first line guide.

29. The method for operating a rotary shearer of the type having a rotating head with an annular line storage cavity and a large-diameter coil of the sheller line in the cavity comprising the steps of: a) rotating the head and coil in a direction about an axis extending through the center of the cavity, and b) winding the line of the rotary sheller -from the coil around a surface of the center of the cavity surrounding the axis in a direction opposite to the direction of rotation of the head about the axis to form a coil of the small diameter line on the surface, and extending the shear line out of the head through an annular opening in a the end of the surface radially from the opening to form a sheller having a free end.

30. The method according to claim 29, which includes the steps of: c) exerting a centrifugal force on the sheller that tends to unwind the sheller from the surface in the rotational direction of the head and thus lengthen the sheller; d) exert a pulling force on the shredder that tends to wind the sheller on the surface in a direction opposite to the direction of rotation of the ca- heza and thus cut the sheller; and e) maintaining the length of the sheller by establishing a balance between the centrifugal force and the drag force.

The method according to claim 30, which includes the step of: f) exerting a centrifugal force on the rotating portion of the sheller line extending between the coils to tighten the small coil on the winding surface .

32. The method according to claim 31, which includes the steps of: g) removing the material from the free end of the de-pelletizer to reduce the length of the sheller; h) lengthening the sheller by rotating the sheller around the winding surface of the head rotational split to re-establish the balance between the centrifugal force and the drag force; and i) feeding the shear line from the large bobbin to the small bobbin.

33. The method according to claim 29, which includes the steps of: c) decelerating the rotation of the head about the axis; and d) then pushing the portion of the line that extends between the coils against the small diameter coil to tighten the coil on the coiling surface.

34. The method according to claim 33, which includes the step of: e) forming a subsequent circuit in the line extending from the coils.

35. The method according to claim 29, which includes the steps of: c) winding two stretches of the sheller line-in the storage cavity and feeding portions of each section from the cavity radially inwardly, around of the winding surface and out of the opening to form two shells; and d) keeping each shredder 180 degrees apart in the opening.

36. The method according to claim 34, which includes the step of: e) stopping the rotation of the head while preventing the feeding of the additional sheller line out of the opening.

37. A method for distributing the deflasher line from a rotary head of the type having a line winding member with one end on one side-of the head and of a feeder passage of the line surrounding the member of winding the line and extending along the member to an exit opening-annular on the side of the head, including the steps of: a) placing a section of the sheller line in the passage with a portion of end of the sheller line extending out of the annular opening; b) rotating the head, the enlellamiento member of the line and the stretch of the sheller line -around an axis that extends around the line-of winding the line; and c) winding the sheller line in the passage around the line winding member to form a first line coil of the sheller that engages the line winding member and a rotary sheller extending gradually outward from the opening of the line. annular outlet and having an inner end connected to the coil and a free external end.

38. The method according to claim 37, which includes the steps of: d) shortening the length of the rotary sheller by removing the sheller line from the free outer end of the rotary sheller; and e) lengthening the rotary sheller by unrolling the sheller line from the spool and adding the line of the uncoiled sheller to the inner end of the rotary rotary machine.

39. The method according to claim-cidn 38, which includes the step of: f) winding the additional line of the sheller -around the winding member of the line.

40. The method according to claim-cidn 39, which includes the steps of: g) providing a second coil of the line-of the sheller attached to the section of the meshing line; And h) feeding the sheller line from the second coil to the first coil.

41. The method according to claim 40, which includes the step of: i) placing the second coil of the de-pellet line in the head surrounding the first coil of the sheller line.