The beards were simultaneously depressed by a presser bar catching the weft and holding it back for a course, making a row of loops.
After Jeremiah Strutt had modified the machine in 1759 to make it capable of ribbing, in 1764 Hammond introduced a tickler stick to transfer the loops 2 or 3 gaits sideways.
The curtain lace industry prospered with the advent of the fashion for large rising sash windows.
The Nottingham lace curtain machine only has one warp, and the patterning threads are carried on a spool, not on a beam.
The terms to describe the actions are the same as those used for a Leavers machine: rise, fall, right, left, sley, carriage, comb etc.
[8] Each bobbin thread has its own jack - a steel wire that can interrupt its movement and create a hole in the pattern, in effect leaving off a tie.