715 
Report of the Judges on the 
large central bole round about the crank-shaft in that side of the disk, close 
to the outside of which is the sheave, " c," of the eccentric ; and through this 
liole a species of tail, " g," cast on the side of the eccentric sheave, passes into 
the cavity of the disk. The governor within the disk is composed of two 
weights, "A h" lying the one on the one side of the crank-shaft, and the other 
on the other, and so coupled by a link, " i," that in whatever position the 
governor may be one weight always balances the other. On the engine being 
put in motion the centrifugal force tends to drive these weights outwards, and 
would do so freely were it not for two powerful springs, "yy," one of which is in 
connection with each weight. These springs replace the effect of gravity in an 
ordinary governor, and keep the weights from too readily flying out, and also 
serve to give the return force to the governor, when the engine slackens its speed. 
To one of these weights is attached a piece of iron, " i," with a curved end, " I"; 
this end passes through a slotted pivot, " in" in the tail, " g,^' by which the 
eccentric is suspended from the pin, "/," in the disk. As the weights move 
outwards, under the influence of the quick revolutions of the engine, they take 
with them this piece of iron ; and the curved end, in its traverse (it being set at 
an angle in relation to its path of motion) acts as an incline to shift the eccentric. 
If the engine be in head-gear it shifts the eccentric from the extreme position 
of that gear towards the centre ; the more nearly it approaches the centre the 
less is the throw of the slide (the lead remaining, however, nearly constant) 
and the sooner is the steam cut off, while at the very centre the eccentric is 
immediately oijposite the crank-pin, and there will be no admission of the 
. steam whatever, except, as in the case of a link motion, that due to the lead. 
If it is desired to reverse the engine for any reason, preparation for this 
must be made before starting, as it cannot be done while ranning. The 
reversal is effected by shifting the position of the curved piece of iron, by 
means of set-screws, so that the inclination to its path shall be left-handed, 
instead of right-handed ; and thus, when the engine is at rest, the eccentric 
is found on the opposite side of the centre to that on which it was when the 
>engine was set for going ahead ; so that on the governor-weights flying out the 
reversed inclination of the curved piece of iron causes the eccentric to depart 
from its extreme position in stern gear, towards the centre, as formerly it 
•caused it to depart from its extreme position in head gear, towards the centre. 
The crank-shaft is a " bent " one, 3 J- in. general diameter, but 3^ in. at the 
crank-pin, and is supjMrted in two gun-metal bearings ; the one on the fly- 
wheel side is adjustable horizontally, the one on the crank side is adjusted 
vertically. 
These gun-metal bearings are carried in wrought heads. bolted to angle-irons, 
riveted to the barrel of the boiler ; the heads are placed with the flat sur- 
faces in such a direction as to admit of their slightly bending, when the 
boiler expands under heat. The wrought heads have welded to theni 
wrought-iron tie-bars, which extend back to the cylinder to lugs, upon which, 
and upon the slide-jacket, they are bolted. These wrought tie-bars carry 
a cross frame, which supports the outer end of the guide-bar. There is only 
a single guide-bar, which is below the piston-rod. This bar is of wrought 
iron, and is embraced by a cast-iron guide, made in an upper and a lower part, 
with capacity for adjustment. 
The Exhibitors point out that by the previously described arrangement, 
the engine is entirely self-contained, and wholly independent of support by the 
boiler, except so far as the mere carrying of the weight of the engine is 
■concerned. 
The feed-pump is immediately under the crank-shaft ; it is worked by its 
own eccentric ; it is always drawing, and returns the surplus water into the 
feed-pail. There is in the return pipe below the regulator (which is a screw- 
valve and not a cock) a steam nozzle in connection with the exhaust-pipe, so 
