textile applications cotton type spinning ring spinning compact spinning air jet spinning open end spinning wool type spinning woolen worsted siro spinning linen type spinning synthetic type spinning extrusion spinning core sheath gel spinning draw warping yarn processing covering twisting braiding embroidery...
in , and an improved machine in ; his howe manufacturing company of derby, connecticut, used three machines to produce pins per day in . walter hunt invented the safety pin by forming an eight-inch brass pin into a bent pin with a spring and guard. he sold the rights to his invention to pay a debt to...