COTTON MANUFACTURE. 85 
racks, 2, of the bearings, 7, thus producing a constant pressure of the 
delivering ends of the tubes, mm, in the same direction upon the bobbins, 
E, Which being turned by the roller, p, wind up the roving as it passes from 
the opening in the plate, m. At the same time the frame, 2, is sliding to 
and fro in a direction parallel with the axis of the bobbins, for the purpose 
of distributing the roving evenly upon their barrels. The extent of this 
sliding motion is shortened a little each time for the purpose of forming 
the ends of the bobbins into a conical shape. When the bobbins are full 
the machine is adjusted to stop itself by throwing the driving band from 
the fast to the loose pulley. The motions of the machine are produced as 
follows : 
The dotted circle 60 (pl. 17, jig, 23) indicates the position of the driving- 
pulley, and ec’ a larger pulley, from which astrap runs over the pulleys 7, 
s, and ¢. The strap then passes the whole length of the machine and over 
the pulleys w and v at its other end (jig. 22). This strap, in its progress 
from the pulley s to the pulley uw, passes round the tubes mm, in such 
a manner as to go over one of the tubes and under the next, which are 
thereby made to revolve without interrupting their sliding or traverse 
motion. 
Upon the axle a@ is the wheel 1, which drives the front roller of the series 
B by means of the wheel 2. A small wheel upon this roller drives through 
the intervention of two intermediate wheels, 4, a wheel, 3, upon the back 
roller. From this back roller the front roller of the other series, a, is driven 
with equal velocity, by means of intermediate wheels (not represented) ; 
motion is communicated to the back roller 4 in the same manner as at B. 
The middle rollers of both sets are moved by wheels 5 and 6, attached to 
them and their respective front rollers, at the other end of the frame, and 
intermediate wheels 7 and 8 (pl. 17, jig. 22). 
Upon the front roller shaft of the set 8, behind the wheel 2 (jig. 23), is a 
bevel pinion, which engages a bevel wheel, 9, upon an inclined shaft, which, 
by means of other bevel gearing seen at 10, drives the bobbin-roller p. 
Upon the other end of this shaft is a roller, «, from which a band passes 
to the pulley y and drives the axle z. 
This axle operates by means of a bevel wheel, a’, upon two bevel wheels, 
b' and ¢’, which drive the axle d in one direction or the other, according as 
a is shifted in gear with 0’ or c’. 
This shifting is effected by moving the bar /’ ( pl. 18, jig. 1), in which is 
the end-bearing of the shaft z, a little one way or the other, and locking it in 
that position by one of the catches, m or n’, which fall into notches in the 
bar 7’; this bar is moved by one of two weights, d and p, hung upon a chain 
running upon rollers, seen in dotted lines (pl. 17, jig. 23). This chain is 
attached at its centre and midway between the two weights to a pin secured 
to the bar /’, in such a manner that when one of the weights is raised, the 
other by its weight moves the bar /’. 
The two ends of the chain pass down through holes in a balance lever, v, 
over each of which holes there is a small ball upon the chain, against one of 
which the balance lever v’ presses alternately to raise that particular weight, 
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