Improvements in Oil Lamps for Railway Carriages and other Purposes.
Year: 1886

page_text: Date of Application, 9th Dec., 1886
Complete Left, 9th Sept., 1887.
Complete Accepted, 11th Oct., 1887.
DESED
Improvements in Oil Lamps for Railway Carriages and other
Purposes.
I JAMES ROOTS Crofton Orpington Kent Engineer do hereby declare the nature of
my invention for IMPROVEMENTS IN OIL LAMPS FOR RAILWAY CARRIAGES AND OTHER
PURPOSES to be as follows:-
The glass globe or well has a perforated metal plate fixed in the bottom through
which air enters for combustion or the perforations may be in the glass. The
reservoir rests on the bottom of the glass and the air from the perforations passes
through it by tube to the burner, which may be circular or flat, or the air may pass
(enclosed) round the reservoir to the cone. The reflector rests on a rim just above
the glass with the chimney at about its centre. Perforations are made in the outer
wall near the reflector to lessen conduction of heat to the glass. In a modification the
perforated space at the bottom is smaller having a secondary small reservoir to feed
the burner and a larger one above the reflector. The flow of oil from the one to the
other may be regulated by any convenient method.

page_text: I, JAMES ROOTS, of Crofton, Orpington, Kent, Engineer do hereby declare the
nature of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :—
The object of this invention is certain detail improvements in oil lamps for railway
carriages and other purposes which will be understood by the following description
reference being had to the annexed drawings which represent two sectional views of
carriage, roof, or overhead lamps.
To the glass globe A at the bottom I affix a perforated metal screen B on the
outside with another perforated screen C on the inside, the two being rivetted at a
distance apart forming a chamber D, through which air can pass in broken lines both
to the interior of the wick tube E and to the space F between the burner nozzle G
and the wick by the tubes H, I, for furnishing air to both sides of the flame for
combustion. The central tube E in Figure 1 has a button or spreader J to produce a
round flame from a round wick or from two flat wicks.
The screen C forms a bottom for supporting the oil reservoir K and the burner, the
wick being liftable by a spirally grooved ring working into three lifters for lifting the
wick equally from, say, three points with the finest possible adjustment.
Figure 2 represents a modified arrangement, in which the bottom screens B, C, are
of smaller diameter and supporting air tubes set conically to feed the under part of
the flame with air and with a screen M above forming an air supply from short
pipes N, N, to the top of the flame by its perforations, said screen M at the same
time acting as a button for spreading the flame. The oil reservoir K in this case is
above the reflector P and feeds a smaller reservoir R, in which the wick is immersed
by pipes Q, Q.
Air for keeping the globe cool is admitted round just above the top edge and
according to Figure 2 the upper or larger reservoir of oil is kept cool by a free cir-
culation as indicated by the arrows,

page_text: Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is :-
:-
1. As my improvements in oil lamps, supporting the oil reservoir K and burner by
a globe A upon or above an open bottom space provided with perforated screens B, C,
for admitting air to support combustion as described and shown in Figure 1.
2. The modified arrangement, in which the burner and small reservoir Rare supported
by the bottom of the glass A, said small reservoir R being supplied with oil from a
larger one K set above the reflector P as described, also the method of supplying air
to the flame substantially as shown by the annexed drawings.
The 0th day of Santambou 1007
H. GARDNER,
166, Fleet Street, London,
Agent for the said James Roots.