Apparatus for spinning a filament |
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| 申请号 | US25514772 | 申请日 | 1972-05-19 | 公开(公告)号 | US3807159A | 公开(公告)日 | 1974-04-30 |
| 申请人 | HAMEL PROJEKTEERUNGS UND VERWA; | 发明人 | HAMEL E; | ||||
| 摘要 | An apparatus for spinning a filament includes a vertical spindle carrying a bobbin of filament to be spun and having a balloonlimiting bell surrounding the bobbin and formed with an upwardly open mouth. The spindle carries at its upper end an upwardly tapered guide pin which projects through the bell mouth and around which the filament is wound several times. The filament is pulled tangentially off this guide pin at an acute angle to the spindle axis as the bell, spindle, and guide pin are rotated about this axis. A tensioning rod may be provided between the pin and the driven takeup spool. This rod is displaceable and may be resiliently biased parallel to the spindle axis. No other filament guide is provided on the bell. | ||||||
| 权利要求 | 1. An apparatus for twisting a filament comprising: a rotatable spindle having a longitudinal axis and adapted to receive a supply of filament; a filament-guide pin tapered axially away from said supply and provided on said spindle coaxial therewith, said filament passing along at least one turn around said guide pin; means offset from said axis for directly and tangetially drawing said filament away from said supply along said pin proximal to the apex thereof; a thread-balloon-limiting bell rotatable with said spindle and surrounding said supply, said bell being formed with an axially open mouth, said filament passing through said mouth, said means being spaced from and unconnected to said bell; and means for rotating said spindle, said guide pin, and said bell, said means for darwing said filament from said supply including guide means for guiding said filament from said pin at an acute angle to said axis, said guide means including means for selectively increasing and decreasing said angle. 2. The apparatus defined in claim 1 wherein said means for increasing and decreasing said angle includes an element pivotal about a horizontal axis and spring means for resiliently urging said element downwardly against said filament, said filament tensioned by said element. 3. The apparatus defined in claim 1 wherein said means for increasing and decreasing said angle includes a vertically displaceable horizontal rod, said filament passing over said rod. 4. The apparatus defined in claim 1, further comprising a wax ring inside the mouth of said bell and contacted by the filament passing onto said pin. 5. The apparatus defined in claim 1 wherein said guide pin is provided with a wax covering contacted by the filament passing therearound. 6. An apparatus for twisting a filament comprising: a rotatable spindle having a longitudinal axis and adapted to receive a supply of filament; a filament-guide pin tapered axially away from said supply and provided on said spindle coaxial therewith, said filament passing along at least one turn around said guide pin; means offset from said axis for directly and tangentially drawing said filament away from said supply along said pin proximal to the apex thereof; a thread-balloon-limiting bell rotatable with said spindle and surrounding said supply, said bell being formed with an axially open mouth, said filament passing through said mouth, said means being spaced from and unconnected to said bell; and means for rotating said spindle, said guide pin, and said bell, said spindle being upright, said mouth being upwardly open and said means for directly drawing said filament away from said guide pin including a yarn package laterally offset from said pin and disposed at a location higher than the top of said pin, a guide mechanism for leading said filament between said pin and said yarn package generally in a plane inclined at an acute angle to said axis downwardly from said package to said pin and for distributing the filament across said package, and tension-control means between said guide mechanism and said package for controlling said angle. 7. The apparatus defined in claim 6 wherein said mouth closely surrounds said pin with clearance, said pin commencing below said mouth and extending therethrough to terminate above said mouth, said bell being free from any element engaging said filament above said mouth and having a cylindrical configuration with a removable cap forming said mouth, said apparatus further comprising a body of wax disposed in the region of said mouth and engaged by said filament. 8. The apparatus defined in claim 6, further comprising a wax ring inside the mouth of said bell and contacted by the filament passing onto said pin. 9. The apparatus defined in claim 6 wherein said guide pin is provided with a wax covering contacted by the filament passing therearound. 10. The apparatus defined in claim 6 wherein said means for drawing said filament from said supply includes guide means for guiding said filament from said pin at an acute angle to said axis. |
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