Heck-box

The threads pass from the bobbins to the frame through an instrument called a jack or heck-box, or simply a heck.

Source: wiktionary

The heck-box moves up and down a post, the motion being regulated by a cord passing over a wheel or pulley and wound round the axle of the reel, and unwound alternately, as the box moves up or down the post.

Source: wiktionary

The heck-box slides vertically on a bar as the reel rotates, and thus disposes the warp spirally on the reel.

Source: wiktionary

For this class of work some very handy creels, heck boxes, and horizontal warping mills, with all the latest adjustments, are offered to the silk trade.

Source: wiktionary