Abstract: A method and device to store a moving strip of material in a continuous strip-feeding system adapted to variations of the feed-in speed in relation to rate of withdrawal, comprises forming a strip into a spiral coil having a constant number of turns and proceeding the strip in substantially the same angular direction with a spare space provided for convolutions to make variations of their mean diameter, and facilitating a change in the length of stored strip without direct forces applied perpendicular to a face of a single, or to a set of separated convolutions; and having the improvement in means to support and to run the strip along the convolutions involved, and comprises at the outer section a separate set of support rollers having at least two driven by a synchronized mechanical transmission from a torque generating unit, and also comprises at the inner section another set of rollers having at least two driven by another synchronized mechanical transmission.

Abstract: An embroidery pantograph assembly comprises first and second movable plates driven in mutually perpendicular directions by a pair of stepping motors and a workpiece holding assembly mounted on the second movable plate and driven thereon in mutually perpendicular directions by third and fourth stepping motors. The first and second plates are moved over relatively large distances by the first and second stepping motors while the workpiece holding assembly is movable over relatively small distances on the second movable plate by the third and fourth stepping motors to effect fine embroidery on a small operating scale.