The Trials of Oil Engines at Cambridge. 
703 
Messrs. Grossley Bros., Ltd., Openskaw, Manchester. — Messrs. 
Crossley’s engine (Second Prize, 2ol.) is very similar (fig. 3) to 
their “ Otto ” gas engine in general appearance and arrange- 
ment, and shows the same excellent workmanship. It is a 
7£ brake horse-power engine costing 113L A pump for in- 
jecting the oil into the vaporiser, a vaporiser, and vapour valve 
have been added ; and the main air inlet, which is automatic, 
is placed above the exhaust valve. 
There is an ignition tube heated by an external lamp which 
also heats the vaporiser. The oil for this lamp is supplied from 
a small reservoir by air pressure which requires recharging with 
air once or twice a day by a hand-pump provided for the pur- 
pose. 
The governor is of the hit-and-miss rotary type, and, 
when the speed 
is too great, in- 
tercepts the link 
which opens the 
vapour valve and 
prevents its ac- 
tion. The vapour 
valve admits a 
new charge of oil 
to the vaporiser 
at the same time 
that it admits 
the vapour to the 
cylinder. There 
is thus always 
one charge in hand. The air valve opens by the suction of the 
piston, and the stream of air meets that of the vapour at right 
angles as it is drawn into the cylinder, and thus thoroughly 
mingles with it. 
Messrs. Wells Bros., Sandiacre, Nottingham. — Fig. 4 shows 
the valve and lever arrangement of Messrs. Wells Brothers’ 
“ Premier.” There are original and ingenious points about this 
engine, and its extreme simplicity is admirable. It is a 4 
nominal horse-power engine costing 117 1. 
There is but one rocking lever to actuate all the valves. 
It is driven by a cam on the lay shaft, in opposition to a 
powerful spiral spring. When running at normal speed the 
spring draws the lever home, closing the exhaust valve, and 
opening the vapour valve at the required moment. When 
running too fast, the horizontal catch, which has been lowered 
by the outward movement of the valve lever, has not time to 
3 a 2 
Fig. 3— Crossley’s Fixed Oil Engine (Second Prize). 
