Report on the Trials of Implements at Wolverliampton. 499 
is conducted round' a tension-anchor E, consisting of a pulley upon a light 
movable carriage, for the purpose of tightening-up the endless rope ; this being 
done when requisite by the liand-wheel F and pinion and small barrel G slowly 
winding up a piece of wire rope H, which is anchored ahead. To guide this 
light machine, the fore carriage has an arm, J, with an eye through which 
the wire roi)e is passed. The hemp rope being led again towards the engine 
and round the fixed pulley K, before passing along the field in the direction 
indicated by the arrow, a loop is formed ; so that an advance of 1 foot by the 
tension-pulley carriage gathers or tightens up 2 feet length of the rope. For 
altering to different sizes of field, rope is easily added or removed, a splice of about 
2 feet in length being done in from five to ten minutes. As represented in the 
plan, Fig. 13, the endless hemp rope, running always in the direction indicated 
Fig. 13. — Plan illustrating the FisJcen System of Steam Cultivation. 
by the arrows, is conducted from the grooved fly-wheel of the engine, A, round 
the movable tension-anchor B, the fixed anchor C, the corner anchor D, then 
once round the two riggers, E and F, of a travelling windlass, G, thence round 
the two corner anchors H and I, one turn round the riggers J and K of another 
travelling windlass, L, and finally round the corner anchor M to the engine 
fly-wheel, A. It will be observed that when the windlass L is in work, 
hauling the implement N by the drum and single ply of wire wpe shown by 
the dotted lines, only the portion of hemp rope between A and the windlass 
L is subject to full tension, the remainder of the rojje being only tight enough 
to support itself clear of the ground ; and the strain due to the work is sus- 
tained only by one corner anchor, M. When the other windlass, G, is in gear 
and hauling the implement, the hemp rope is tight between the engine and 
that windlass, and the strain is taken Tipon the three corner anchors, M, I, and 
H. The windlasses gradually shift themselves forward, so as to be always 
opposite the line of work, by slowly winding up fixed headland wire ropes 
anchored at P and Q. Fig. 14 is an enlarged view, not drawn to any scale, 
but illustrating the action of the windlass. A horizontal iron frame, mounted 
upon four wheels, which are ribbed on the tires to give them some hold upon 
the ground, caiTies a 4-feet diameter rope-drum. A, underneath, and driving- 
.spur gear and riggers above. The driving-rigger B, of 3t feet diameter, has 
two V-grooves ; and the guide-rigger G, of 20 inches diameter, with a single 
round-bottomed groove, is hung on a skew axis, so as to divert the rope from 
one V-groove to the other upon the rigger B. The rope takes more than half 
a turn round the bottom 
