554 
Trials of Tradion-Engines at Wolverhampton. 
attached to drive direct. The bearing which supported the outer end of the 
short shaft was not bolted directly to the outer disc of the left-hand driving- 
wheel, but by means of trunnions was carried in a bracket, which was itself 
bolted to the disc. The inside of the socket was made rounding. These pre- 
cautions were taken to allow for any irregularity in the position of the outer 
bearing of the short shaft. As we have said, this device was very ingenious, 
and by its adoption Mr. Burrell succeeded in keeping his engines athwartships, 
and in dispensing with the bevel gear employed in the " Sutherland." We 
fear, however, that the driving-pulley of Mr. Burrell's engine was brought into 
a somewhat inconvenient position, about 3 feet 4a inches from the ground, and 
that the contrivance for supporting the outer end of the short shaft would not 
be very satisfactory in practice. On the whole, we prefer the manner in which 
Messrs. Ransomes, Sims, and Head solved the very difficult problem of taking 
off power for farm-yard purposes from an arrangement of engine such as that 
employed in these two " pot boilers." The whole of the working parts of this 
engine were enclosed in a manner very similar to that employed in the 
" Sutherland." 
This engine was declared to work at 24-horse-power on the brake, at 150 
revolutions, and at 130 lbs. pressure of steam. It consumed G"233 lbs. of coal 
for each horse-power, and evaporated 5'95 lbs. of water for 1 lb. of coal. The 
steaming during the trial was very irregular. 
Although the exhibitor fitted indicator cocks to both cylinders, he had not 
l^rovided a lever ior each, and as it was impossible to change the lever from one 
cylinder to the other while the engine was running upon the brake, we were 
compelled to be content with a diagram from the right-hand cylinder only, 
which shows the gross indicated horse-power to be 314, The consumption of 
coals, therefore, for each such horse-power was 4'62 lbs. 
Fig. 14. — Indicator Diagram, of tlie rigld-ltand cylinder of Burrell's 
S-Eorse-poicer Tliomson's Patent Locomotive, No. 3661. 
The oil and tallow used during the trial were 10 ozs., being at the rate of 
1*85 oz. per actual horsc-powcr per day of 10 hours. 
