Spinning device with bobbin changer

The spinning device comprises a vertically displaceable spindle bearing plate (2) carrying a rotatable spindle (1), and a cap-shaped thread guide member (6) rotatable about the spindle axis. The bobbin changer has a supporting element (11) and a bobbin holder element (10) which are movable transversely to the spindle axis. An extension (9) is releasably mounted on the top end of the spindle (1) and/or of a bobbin tube (8) placed on the spindle. Once the bobbin tube (8) has been fully wound with yarn, a short yarn section is wound onto this extension (9), and then the spinning device is shut off. The spindle bearing plate (2) is lowered, and the supporting element (11) is moved toward the spindle axis in order to seize the extension (9). The spindle bearing plate (2) is lowered further, and the bobbin holder element (10) is moved toward the spindle axis, seizes the fully wound bobbin tube (8), and transfers the latter to a conveying means (14, 15). Subsequently, the bobbin holder element (10) moves an empty bobbin tube (8) from the conveying means (14, 15) into the axis of the spindle. Then the spindle bearing plate (2) is lifted in order to introduce the spindle (1) into the empty bobbin tube (8). The supporting element (11) places the extension (9) onto the upper end of the bobbin tube (8) and withdraws.

What is claimed is:

1. A bobbin changer for use in combination with a spinning device which device includes a rotatable and axially displaceable spindle, a thread guide member coaxial to the spindle and rotatable about the axis of said spindle, and an extension releasably extending from a free end of said spindle for winding thereupon a section of yarn of definite length prior to changing said bobbin, said bobbin changer comprising

a bobbin holder means, said bobbin holder means movable in a direction transverse to the axis of said spindle between a first position intersecting said spindle axis to a second position adjacent said spindle, said bobbin holder means capable of cooperative engagement with said bobbin to permit said bobbin holder means to remove a full bobbin from said spindle and transfer said bobbin to said second position, said bobbin holder means also capable of cooperative engagement with an empty bobbin and to transfer said empty bobbin from said second position to said first position,

first support means adapted to restrain said extension from lateral displacement, said first support means movable in a direction transverse to said axis of said spindle from a position adjacent said spindle to a position intersecting said spindle axis and in engagement with said extension.

2. A bobbin changer according to claim 1, further comprising a second supporting means capable of cooperative engagement with said bobbin and of being advanced transversely to said spindle axis to retain a bobbin positioned on said spindle in place and to avoid axial shifting of said bobbin in relation to said spindle.

3. A bobbin changer according to claim 2, further comprising means for axially displacing said spindle along an axial direction to effect detachment of said spindle from said extension as well as from said full bobbin and to effect cooperative engagement of said spindle with an empty bobbin.

4. A bobbin changer according to claim 3, wherein said means to axially displace said spindle comprises a spindle support plate which plate is axially shiftable.

5. A bobbin changer according to claim 1, further comprising means to support said full bobbin upon being transferred to said second position.