OF SAMUEL CROMPTON. 341 



is as follows : — Two of the wheels were less and 

 two larger ; upon the rim-axis, were placed one 

 of the small and one of the large, and the two 

 others were fixed in a frame which carried the 

 axis upon which they were placed, and which 

 had a shank or axis growing to it. This was 

 placed in a vertical position, so that when the 

 carriage was put up, an arm projecting from this 

 vertical shank was connected by a wire with a 

 catch which kept the lying shaft that turned the 

 rollers in gear. In the elongating process the 

 smaller wheel was in contact with the larger 

 wheel upon the rim, but when by the disen- 

 gagement of the catch, the rollers became still 

 or stationary, at that moment the larger wheel 

 by means of a weight came in contact with the 

 lesser wheel upon the rim or axis, to which it 

 communicated a double velocity. The shaft with 

 its large and small wheels working alternately, 

 had a pulley with a catch upon it, and was driven 

 by the mill work, and was forced into a corre- 

 sponding catch upon the said little shaft when 

 the mule was to be set in motion by the steam 

 power, (the power in this instance was Savary's.) 

 There was a worm upon the rim axis with a 

 wheel upon it, the number of whose teeth 

 determined tlie revolutions of the rim, as de- 

 scribed in Kelley*s single speed. The second 

 drawing which had generally been performed by 



