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Report on the Exhibition and Trials 
worked by the roller, 11, by a groove on the underside of the cam- 
wheel, shown in dotted lines) is opened by the buffer, 12, coming 
into contact with 13 (Fig. 18) ; thus releasing the one end of the 
string previously held in the gripper, and leaving an opening for 
the eye of the needle to pass through, which now resumes its 
downward course and lays the string in the gripper, which then 
closes by the return movement of the slide, 14 (Fig. 18), in the 
direction indicated by the arrow, and afterwards, being con- 
tinued, brings the string against the revolving circular knife, 15 
(Figs. 15 and 18), which is cut accordingly. The two ends of the 
string are now free to be tied in a knot, which is completed by 
the rotary hook, 6 (Figs. 16 and 17), winding the string round 
the mandril, 16, as shown in Fig. 16 ; the two ends being finally 
laid in the opening, 17 (Fig. 18). The mandril, 16 (Figs. 16, 17, 
and 18) is then withdrawn in 18 (Fig. 18), by the action of the 
roller, 19, in the cam-groove, 20 (Fig. 18), and the tongue, 21, 
acted on by the spring, 22 (Fig. 18), causes the ends of the 
string to be nipped and drawn through the loop of the knot, 
which is drawn against the ends of 18. The point 23 plays an 
important part in keeping the loop open whilst the ends are 
drawn through, as the string thereby takes all the slack of the 
knot into the ends, instead of its going towards the sheaf and 
thereby tending to loosen it. It is also for the same reason, viz., 
the tight binding of the sheaf, that the ends of the knot are 
drawn right through, instead of being left in a loop. It should 
be mentioned that the cam-wheel crank, 24, and wheel, 25 (Fig. 
18) which govern the motions of the collector and binder, make 
one revolution for each sheaf tied. The cam being driven by 
a pinion on the shaft, 26. 
The arrangement for separating the sheaves is shown in Fig. 15 ; 
4 is one of the gathering-arms which sweeps the sheaf forward 
into the position to be bound, and 27 is the lagging arm, which 
is centred to 4, its relative position being regulated by the cam, 
28, which is fixed to the frame. At the time when the gather- 
ing-arm enters the shower of grain falling from the elevating 
aprons, the points of 4 and 27 are together, so as to form |one 
point ; but immediately after the separation is made, 27 begins 
to lag behind, and keeps back the falling grain until at the 
point when the sheaf is tied the two arms are separated by 
16 inches. The gathering-arms have an intermittent motion 
given to them by means of mutilated gear acting on the 
pinion 29 (Fig. 18). The arms pause during the time the sheaf is 
being tied, at the completion of which they discharge the sheaf. 
The principal difference between King's and liamlett's machines 
is that the compression of the sheaf is effected in the former 
by a cord, whereas in the latter the compression is effected by a 
double fork on a small independent shaft actuated by the cam- 
