A two-page illustrated article from Engineering describing John Keats' machine for laying (twisting) silk sewing thread, built by Greenwood and Batley of Leeds. It explains how a sizing machine winds silk onto bobbins and a laying machine twists three strands together by counter-rotating spindles and frame, replacing hand laying and allowing threads of much greater length. Page 1 has two engraved views of the machines (Figs. 1 and 2).