530 Miscellaneous Im'plements ^Exhibited at Warwich. 
made between the air inlet space and the gas passage up to the 
gas valve ; in this way, so soon as the gas valve closes, air, 
which is still free to enter the cylinder, sweeps out the gas left 
in the passage in front of it into the cylinder, which gas would 
otherwise have been wasted if, on the succeeding stroke, the 
engine is held by the governor. 
The governing of the engine is effected by a hit and miss 
governor actuating the spindle of the gas inlet valve. At the 
normal speed of the engine an inclined plane, forming part of 
the striker, slides smoothly against a fixed pin ; if, however, the 
speed increases, it engages against it with sufficient force to 
throw it out clear of the spindle of the inlet valve. A simple 
starting arrangement is provided in the form of a small hand 
Fig. 2.— Tf.ngyes’ Gas Eugiuc. 
pump, by which a charge of gas is pumped into the cylinder, 
which mixes with the air already therein, and is compressed to 
about 10 lb. It is then fired, the explosion of such charge being 
stated to be sufficient to start the engine with one half load 
on it. 
The lubrication of the cylinder is effected by a very simple 
positive action lubricator, by which a small but regular supply 
of oil is provided. 
Messrs. Fieldinij & Platt, Gloucester (Stand 257). In the 
three engines exhibited by this firm there has been a distinct 
endeavour to simplify, and to reduce the number of, the working 
parts. In the 4 horse-power engine exhibited there is but one cam 
on the side shaft, which, by means of a rocking lever, actuates the 
valves. The gas valve is controlled by a hit and miss governor, 
