Rail thread box assembly

A thread box assembly, comprising:

• a framing body configured to be coupled with a moveable arm of a thread box system that positions rails or rail ribbons for installation or replacement of a track, the framing body including external framing walls extending from a plate coupled with the moveable arm, the external framing walls extending from the plate to outer ends;
• and
• a closing body comprising opposing elongated bars,
• the closing body configured to be removably coupled to the framing body to define and surround a central opening of the thread box assembly through which the rails or rail ribbons extend during installation or replacement of the track without the closing body moving relative to the framing body during installation or replacement of the track.

A thread box assembly, comprising:

• a framing body configured to be coupled with a moveable arm of a thread box system that positions rails or rail ribbons for installation or replacement of a track, the framing body including external framing walls arranged in a general U-shape, opposing each other, and extending from a plate coupled with the moveable arm, the external framing walls extending from the plate to outer ends, the framing body including supporting walls between the external framing walls, the supporting walls coupling the external framing walls with each other, the external framing walls oriented parallel to each other and perpendicular to the plate, the supporting walls oriented parallel to each other and perpendicular to the plate and to the external framing walls, one of the outer ends of each of the external framing walls includes a first fastener opening shaped to receive a fastener;
• a closing body comprising opposing elongated bars and opposing internal coupling walls, the internal coupling walls connecting the bars with each other, the elongated bars oriented perpendicular to the coupling walls, one end of each of the elongated bars of the closing body includes a second fastener opening shaped to receive the fastener, the closing body configured to be removably coupled to the framing body to define and surround a central opening of the thread box assembly through which the rails or rail ribbons extend during installation or replacement of the track without the closing body moving relative to the framing body during installation or replacement of the track;
• a first roller coupled with the framing body;
• and
• a second roller coupled with the closing body, the first and second rollers configured to rotate around parallel axes relative to the framing body and the closing body during passage of the rails or rail ribbons through the central opening.