494 Chronicles of Science. [ July, 
from which the several motions of the machine are derived. Rotary 
motion is communicated to this shaft by a chain or band from a prime 
mover, passing over the loose clutch pulley m, near which is a fixed 
clutch n, capable of sliding on a feather on the shaft, and by means of 
the forked lever 0, and rod p, it can be thrown into and out of gear 
with m, and motion communicated to the horizontal shaft, or arrested. 
To the movable plate d is fixed a jib g, which projects 18 inches 
beyond the furnace door, to this by a socket-joint s, is suspended a 
hanger r, which moves both longitudinally and transversily. The 
lower end of this hanger is made into two forks ¢, u, one on each side, 
into one or other of which forks the puddling tool or “rabble” v, can 
be jointed by the axis w. This description, with the woodcuts, will 
enable the reader to understand the principle of this invention, the 
object of which is to impart to the puddling tool a backward and for- 
