The rove yarn is now ready for the spinning frame, where a further draft of about eight is given.
From this machine the roving is wound on a bobbin ready for the spinning frame.
This business he gave up about 1767 in order to devote himself to the construction of the spinning frame.
For very heavy jute yarns the spinning frame is not used—the desired amount of twist being given at the roving frame.
His spinning frame and Hargreaves' spinning jenny each needed the other to perfect its work.
The yarn coming from the spinning frame is sometimes dyed before weaving.
The spinning frame does not differ in principle from the throstle spinning machine used in cotton manufacture.
Two years after the jenny, in 1769, Richard Arkwright invented the spinning frame.
A great improvement on the spinning frame of the 18th century is the ring frame invented by Jenks.
The final machine used in the conversion of rove to the size of yarn required is termed the spinning frame.