Cure the sweet potatoes for 1 to 2 weeks. Keep the roots in a room or other location that reaches between 75 and 80 degrees Fahrenheit (24 and 27 degrees Celsius) with relative humidity of 90 to 95 percent.1  The sweet potatoes need to cure for at least 7 days, but they can be kept there for as many as 14 days. The sweet potatoes need to cure for at least 7 days, but they can be kept there for as many as 14 days. 2  The curing process creates a second skin that forms over scratches and bruises, allowing the sweet potatoes to last longer in storage.
The state of the art spinning wheel in England was known as the Jersey wheel however an alternative wheel, the Saxony wheel was a double band treadle spinning wheel where the spindle rotated faster than the traveller in a ratio of 8:6, drawing on both was done by the spinners fingers.
This problem was resolved in 1764, when James Hargreaves invented a new machine that was capable of spinning eight threads of cotton yarn, instead of the spinning wheel's one. The new machine was called the spinning jenny.All this time the processes of spinning and weaving were still being carried out at home.e called his machine the Spinning Jenny, after his daughter. Hargreaves made a number of Spinning Jennies and started to sell them in the area. However, since each machine was capable of doing the work of eight people, other spinners were angry about the competition.