366 Mr. Treadwell’s Description of a Machine, 
arm ¢ is carried upwards, the shaft 7 rolling back; the top of the 
spring wu is carried to the left, and the slide o 0, and the clutch- 
boxes also, from their connexions, before described, must be 
carried to the left. ‘This brings the face of the catch m’ into con- 
tact with the projections of one of the plates 5a, and, from this 
engagement, the. star-wheel 4a is made to revolve with the shaft 
ff. As soon as this revolution commences, one of the plates 5a, 
upon one of the points of the star-wheel, must strike the bob 9a, 
and throw the end of the lever 6a, to which it is attached, up- 
wards, which will be caught and held by the pall or click 46. The 
length of the pall or click 40 is such, that it catches the lever 6a 
when it is carried to the highest point to which the star-wheel 
can carry it ; consequently, when it is so caught, the points of 
the star-wheel do not, by their continued revolution, strike with 
much force, if they strike at all, upon the bob. It will be at once 
perceived, by an inspection of the drawings, that when the left 
end of the lever 6a, to which the bob is attached, is thrown up- 
wards, the right end must be depressed, and the comb 8d be 
carried downwards ; at the same time the right end of the lever 
ic must, from the connexion of that lever, as before described, 
with the lever 6a, be carried upwards, and, its motion being com- 
municated by the rod 2c to the false bottom of the gatherer, that 
will be carried upwards. These motions of the comb and of the 
false bottom of the gatherer, will cause the teeth of the comb to 
be passed into the column of roving which is in the gatherer. 
This will prevent the free passage of the fibres, of which the 
roving is made up, to the drawing-roilers; while some of the 
fibres, the ends of which are already in the drawing-rollers, will 
be broken off, and thus the size of the filament will be speedily 
reduced to its proper dimensions. It may happen on the passage 
of a lock of tow, or a knot of entangled fibres, through the rollers, 
