76 TECHNOLOGY. 
casing round the cone. The cone a consists of a strong shaft, aa, carrying 
three cast-iron rings, one at each end and one in the middle, on which the 
sheet-iron is secured which forms the surface of the cone. 
Longitudinally upon this surface are four iron rods, in which are secured 
rows of strong iron pins, 0d ; upon each side of the framework is a row of 
pins, dd, corresponding to the spaces between the pins upon the cones. 
The cone is surrounded by a concentric covering, the bottom of which con- 
sists of a grating or perforated plate; at the small end of the covering is a 
rectangular opening, e, connected with the frame p, in which travels the 
endless feeding apron £, which consists of parallel stripes of thin sheet-iron, 
# inch wide, and secured half an inch apart, upon endless bands of leather 
running upon rollers. 
At the larger end of the machine is a chamber, r, into which the cotton 
is thrown by the revolving cone, whence it is received by an endless apron 
similar to the feeding apron, and shown by dotted lines at ec. About an 
inch above the apron, and upon an axis parallel thereto, revolves a wire 
cylinder, u, having a sheet-iron covering which communicates with the 
chamber F by the openings ff. Above the wire cylinder is a ventilator, 
which draws the dust of the cotton through the wire cylinder from the 
chamber F, and blows it out at the opening g. The wire cylinder seems not 
only to prevent the cotton from being blown away with the dust, but lays 
it upon the delivering apron, and is connected with the ventilator by means 
of a covering of sheet-tin, which embraces the openings at the ends of both 
these cylinders, the dust passing through the meshes of the wire cylinders 
being blown out by the ventilator. 
The motions of this effective machine are as follows: Upon one end of 
the shaft a of the cone a, are the usual fast and loose pulleys x, and upon 
the other end the two pulleys 7 and #, of which the former communicates 
motion to the ventilator, by a band upon the pulley 7. From the pulley & 
an endless band drives the pulley m, upon the axis of the roller carrying 
the delivering apron. Upon the axle of the latter roller is a pulley, x, 
which gives motion by another band to the pulley o of the wire cylinder u. 
Upon the other end of the last-named axle is a pinion, y, which drives the 
wheel g, and the small pulley 7 attached to it. rom the latter a band runs 
to the pulley s, upon an axle ¢, having a universal joint, which permits the 
deflection of the direction of its motion to one parallel with the exterior sur- 
face of the cylinder. The universal-jointed axle ¢ runs in boxes in the 
frame p, and carried a cog-wheel, «, which engages another cog-wheel, », 
upon one of the rollers of the feed apron, by which means the latter is 
driven. 
The operation of the willow is as follows: The cotton, which is gradually 
carried to the machine by the feeding apron, is torn open at the smaller end 
of the cone, and its heavier impurities, dust, stones, &c., fall out; the cotton 
being carried by centrifugal force to the other end of the machine, the 
lighter particles of dust are thrown through the cylindrical revolving sieve. 
This is a powerful and safe machine, and capable of cleaning 7200 lbs., or 
24 bales of cotton per day. 
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