1818—Machinery for preparing sewing cotton invented in England by Holt.
1822—First cotton factory erected at Lowell.
1823—Differential motion for roving frames patented by Arnold. First export of raw cotton from Egypt to England.
1824—Tube frame or speeder patented by Danforth.
1825—Self-acting mule patented in England by Roberts.
1828—Ring spinning patented by John Thorpe. Cap spinning patented by Danforth.
1829—Revolving loom temple improvements patented by Ira Draper.
1832—Stop-motion for drawing frames invented by Bachelder.
1833—Ring spinning frames first built by William Mason.
1834—Weft fork patented in England by Ramsbottom and Hope. Shuttle-changing loom by Reid and Johnson.