US Patent No. 248,669, granted October 25, 1881 to Emanuel K. Sackett of Brooklyn, New York, for a foldable lace-desk (lace-board) used to hold threads while making macramé lace. The specification describes a flexible canvas top stretched between a back piece and front piece, hinged end pieces, thread-holding pins, and an adjustable spring-bar that lifts threads for tying Solomon's knots. It closes with five claims and is accompanied by two sheets of drawings (Figs. 1-6) showing the desk open, folded, and in variant constructions.