초록 ▼

An initial threading mechanism provides for simple but effective threading of the elongated hollow shaft of a vacuum spinning apparatus. Connected textile fibers are fed into the first end of the elongated hollow shaft, into the passageway which extends through the shaft from its first end to a seco

An initial threading mechanism provides for simple but effective threading of the elongated hollow shaft of a vacuum spinning apparatus. Connected textile fibers are fed into the first end of the elongated hollow shaft, into the passageway which extends through the shaft from its first end to a second end. A vacuum tube is mounted for rotation about an axis parallel to and spaced from the axis of rotation of the hollow shaft. When a first open end of the vacuum tube is pivoted into an operative position adjacent the second end of the shaft, and in alignment with the shaft passageway, the vacuum tube connects up to a source of vacuum and draws a segment of the connected fibers completely through the passageway. The shaft includes perforations which normally are in operative communication with a vacuum source applied to the circumferential exterior of the shaft, however during rotation of the vacuum tube into its operative position an electrical switch is actuated causing a solenoid operated valve to cut off the application of vacuum to the circumferential exterior of the shaft. Once a segment of connected fibers has been drawn through the shaft passageway the vacuum tube is pivoted back to its original position, and the segment of fibers is connected to a take-up mechanism.

대표청구항 ▼

A threading apparatus comprising: a vacuum reservoir having walls; means for connecting said vacuum reservoir to a source of vacuum; a vacuum tube having first and second open ends; means for defining an opening in one of said reservoir walls; and means for mounting said vacuum tube for rotation wit

A threading apparatus comprising: a vacuum reservoir having walls; means for connecting said vacuum reservoir to a source of vacuum; a vacuum tube having first and second open ends; means for defining an opening in one of said reservoir walls; and means for mounting said vacuum tube for rotation with respect to said reservoir so that said second open end of said tube is movable from a first, inoperative, position wherein it is spaced from said opening to a second, operative, position wherein it is in operative communication with said opening so that a vacuum is drawn through said tube first end into said reservoir and to said source of vacuum. Threading apparatus associated with vacuum spinning apparatus; said vacuum spinning apparatus comprising: an elongated hollow shaft having a longitudinal axis, a first end and a second end, a through-extending passageway from the first end to the second end, and at least a portion of the entire circumference of the shaft being perforated; means for mounting said shaft for rotation about a first axis; means for rotating said shaft about its axis; means for applying a vacuum, from a vacuum source, to the exterior of said shaft to draw air through said first end of said shaft, and said passageway, through said perforations; means for feeding textile fibers into said passageway from said first end of said shaft; and means for withdrawing formed yarn from said second end of said shaft; and wherein said threading apparatus comprises; a vacuum tube having a first open end thereof, and mounted in operative association with said hollow shaft so that said vacuum tube is pivotally movable about an axis parallel to the longitudinal axis of the shaft from a first, inoperative position wherein the first open end thereof is spaced from said second end of said shaft, to a second, operative position wherein said first open end of said tube is adjacent said second end of said shaft, and in alignment with said passageway; and means for operatively connecting said vacuum tube to a vacuum source when said vacuum tube is in its second, operative position.