Report of the Trial of Ploughs, Ilarroirs, ^'c, at Hall. 593 
it is a question for practical ex]iorience to decide wLicli is most valuable. 
The price is rather heavy, being 71. 15s. 
Messra. Sitiitti/s invention (No. 1994) is a Heavy Roller, in three parts or 
sections, which are relatively in the same position as the wheels and steerage 
of Aveling and Porter's Steam Roller. The two back rollers are hung upon 
a double-jointed axle, so that each section is free to adapt itself to irregularities 
of the surface. The double joint is in the centre, the ends of the spindle are 
attached to a cross-bar of iron, and hung on the frame. The arrangement of 
the rollers is highly ingenious, and the action of the jointed axle is perfect in 
allowing each roller to reach the holes ; but the construction was seriously 
deieclive, and the front section far too small to allow of turning without 
disturbing the soil. Self-acting scrapers, consisting of a series of hoes set 
diagonally on a bar, hinged at one end and free at the other, operate by their 
Aveight. 
Fig. <)G.~Messrs. Sahiti/s Heavy Rnllcr. No. 1994. 
k ZFta — 
Fig. 9G shows the two hind sections and the jointed spindle. The horses- 
draw from the axle of the front section, not shown in the illustration. 
The motion was unsteady, and the rollers, instead of working true, were actuated 
by a series of jerks. These are details capable of improvement. The cylinders 
are constructed so as to hold water if required. We can understand that 
such a roller might prove of great use when the surface was unequal. Sup- 
pose, for example, a furrow with gradually rising land on each side, keeping 
the horse in the furrow, the hind rollers would adapt themselves -to the nature 
of the surface. The price, which, however, is no criterion as to value, the 
machine being very badly made, is stated to be 9/. 10s., with 11. extra for 
the scrapers. 
The Prize of lOZ. was awarded to Brigham and Co., of Ber- 
wick-on-Tweed, for article No. 1865. 
Section — Cultivatoes and Scaeifiers. 
The Cultivators and Broadshares shown by C. Clay, of 
Wakefield, which were successful, taking first prizes in Classes 
27, 28, 29, and 30, are identical in construction, and only differ 
according to requirements in width, strength of material, and 
the number of tines, one description will therefore suffice. 
The frame is supported by three wheels, two behind and one in front ; these 
•wheels are independent of each other, the arms being attached to the frame by 
a strong loop and screw bolt. Their principal use is to regulate the depth of 
work ; in the larger machines the alteration is facilitated by means of lever 
handles as shown in Fig. 99. Within the frame strong bars work in carriages, 
being moved partly round by the action of the lever and arm. 
On these bars the tines are fixed by means of a wedge or cotter, and can be 
removed, or their position altered, to suit the nature of the work, more or fewer 
