A slot drum for a winding machine for traversing a yarn has a drum body including a first half and an adjacent second half, the drum body held in a rotationally fixed manner on a drum shaft. The adjacent first and second halves defining a yarn guide slot that extends around the drum body. The first and second halves include a side shield, a cylindrical jacket, and a hub for mounting on the drum shaft. The first half is displaceable on the drum shaft in a direction of the drum axis via an actuator. The first half rotates relative to the second half as the first half moves in the direction of the drum axis.

A slot drum for a winding machine for traversing a yarn has a drum body including a first half and an adjacent second half, the drum body held in a rotationally fixed manner on a drum shaft. The adjacent first and second halves defining a yarn guide slot that extends around the drum body. The first and second halves include a side shield, a cylindrical jacket, and a hub for mounting on the drum shaft. The first half is displaceable on the drum shaft in a direction of the drum axis via an actuator. The first half rotates relative to the second half as the first half moves in the direction of the drum axis.

An apparatus for winding coils onto a spherical body includes a frame, a feeder spool, a first hemispherical bobbin, a second hemispherical bobbin, a first spring-loaded pin, a second spring-loaded pin, and a motor arrangement. The feeder spool is rotationally mounted on the frame, has first and second wires wound thereon, and is configured to rotate about a first rotational axis. The first and second hemispherical bobbins are rotationally mounted on the frame and configured to rotate about a second rotational axis that is parallel to the first rotational axis. The bobbins are spaced apart from each other to define a wire-feeder gap through which the first and second wires may be fed. The motor arrangement is coupled to the first and second hemispherical bobbins and is configured to cause the first and second hemispherical bobbins to rotate in opposite directions about the second rotational axis.

A slot drum for a winding machine for traversing a yarn has a drum body including a first half and an adjacent second half, the drum body held in a rotationally fixed manner on a drum shaft. The adjacent first and second halves defining a yarn guide slot that extends around the drum body. The first and second halves include a side shield, a cylindrical jacket, and a hub for mounting on the drum shaft. The first half is displaceable on the drum shaft in a direction of the drum axis via an actuator. The first half rotates relative to the second half as the first half moves in the direction of the drum axis.

A slot drum for a winding machine for traversing a yarn has a drum body including a first half and an adjacent second half, the drum body held in a rotationally fixed manner on a drum shaft. The adjacent first and second halves defining a yarn guide slot that extends around the drum body. The first and second halves include a side shield, a cylindrical jacket, and a hub for mounting on the drum shaft. The first half is displaceable on the drum shaft in a direction of the drum axis via an actuator. The first half rotates relative to the second half as the first half moves in the direction of the drum axis.