Report of the Trials of Ploiif/hs, Harrows, Sfc, at Hull. 589 
Class 23. — For the best Light Roller. 
The first prize was awarded to article No. 140, a Water-Ballast Roller, 
composed of two cylinders, 18 inches diameter, and covering together 65 feet. 
The cylinders arc constructed of the best boiler-plate iron, the ends being securely 
fastened by rivets. The framework is of cast iron, and the wooden shafts are 
secured by 4 strong bolts and nuts. The ability to make the same imple- 
ment into either a light or heavy roller by the addition or withdrawal of the 
water with which it is ballasted is an important consideration, as we get the 
effect of two implements in one. The process of filling is readily effected by 
removing a brass plug in the smface of the cylinder. A key fitting the 
same is supplied with each roller, and the ping is so conntersunk that the 
threads of the screw are not liable to be injured by pressure. A funnel is 
also sujiplied fitting into the hole, and thus the filling is easily accomplished. 
I'he weight can be increased from 8 to 14 cwt. Price, 17^. 10s. 
Article No, 144, also shown by Messrs. Barford and Perkins, was highly 
commended. This is similar in form, only the cylinders are of larger diameter 
.ind open. The superiority of wrought over cast iron for the cylinders is a point 
of importance, as the latter is liable to fracture in consequence of any violent 
jar. The advantages of a double cylinder are found principally in greater 
facility of turning. The frame is precisely similar to that of No. 140. The 
price is 13?. 10s. This roller has a seat for the driver, a desirable addition. 
The Bevirley Iron and Waggon Company were awarded the second prize 
in Class 23 for article No. 1383, a Plain Field Poller, composed of four wrought- 
iron cylinders, each 2 feet long and 21 inches diameter. Here, as in the clod- 
crushers, the castings which carry the frame and shafts are so arranged as to 
take the weight off the horse's back. The roller costs 12?. 10s., and \l. extra 
if supplied with a driver's seat. 
Mr. W. Hunt, of Leicester, was commended for article No. 1638. This roller 
is made with three wrought-iron cylinders. The centre of the shaft is square, 
and thus drives the two outside cjdinders, an arrangement which tends to 
reduce friction. The roller is self-lubricating, and fitted with renewable bushes 
and grease-boxes. The cylinders are 24 inches diameter, and cover 7 feet of 
ground. Price, 14?. 10s. 
Class 24. — For the best Heavy Roller. 
Here again, as in Class 23, the entries were large. 
The Water-Ballast Roller, combining great weight in a reasonable compass, 
was evidently most desirable as a heavy roller. Messrs. Barford and Perkins 
showed no less than six — three on this principle, and three made of cast metal, 
the cylinders being in three parts : the latter are cheaper, but far less effective. 
The roller selected for the first prize was No. 147, precisely similar to the 
implement No. 140 (which was in a similar position in Class 23), only much 
larger, viz. 24 inches diameter. Weight, empty, 11 cwt. ; full, 22 cwt. 
Price, 21?. 
The Second Prize was awarded to the Beverley Iron and Waggon Company 
r Roller No. 1386, which consists of nine cast-iron rings, 2 feet 8 inches 
iiameter and 8 inches wide, thus covering 6 feet of ground. These cylinders 
arc placed upon a round axle. The arms have grease-boxes and loose bushes. 
This is a very well-made implement. The draught-irons are arranged for 
the side-horses to draw directly from the axle, and thus, their work being 
independent of the shaft-horse, there is no possibility of his having to bear 
iinnecessary pressure. Price, 19?. 
