A one-page dictionary entry on the thread-frame, the machine that doubles and twists two or more cotton or linen yarns into thread. It describes a thread-finishing machine in section (creel, glass rods, water troughs, iron and boxwood rollers, gearing and heart-cam bobbin traverse) and a simpler frame in which yarns pass through a gum or starch solution before being twisted by a flyer onto a bobbin. Three engraved figures (Figs. 6399-6401) illustrate the machines.