Improvements in Petroleum Feeding Devices for Regenerative Hydro-carbon Lamps.
Year: 1895

page_text: Date of Application, 8th Jan., 1895-Accepted, 16th Mar., 1895
COMPLETE SPECIFICATION.
Improvements in Petroleum Feeding Devices for Regenerative
Hydro-carbon Lamps.
I, ERNST AUGUST HEINRICH JULIUS SCHÜLKE, of 94 Leipzigerstrasse,
Berlin, in the Empire of Germany, Engineer do hereby declare the nature of my
said invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention relates to an improved device for feeding the petroleum consumed
by regenerative hydro-carbon lamps, such device consisting of an elastic or flexible
tube fixed at one end to the petroleum receptacle, the other free end being
provided with an overflow-chamber which may be so raised and lowered along
with the flexible tube that the flow of petroleum may be increased, decreased or
cut-off altogether by correspondingly changing the position of said chamber. The
arrangement of the latter is such, that the petroleum fed through said flexible
tube cannot pass out of such chamber into the gasifying retort until the chamber
is quite full. During this self filling, flames fed by spirit heat the lamp so as to
effect the gasifying of the petroleum. The required quantity of spirit, therefore,
may be put into the spirit-receptacle and the petroleum caused to flow into the
over-flow chamber simultaneously; the petroleum, however, does not pass to the
gasifying retort until said flames are extinguished.
I will now describe my invention with reference to the accompanying drawings,
in which :-
Fig. 1 is a regenerative hydro-carbon lamp, partly in section and provided with
the improved petroleum feeding-device.
Fig. 2 shows, on larger scale a vertical section of a modified construction of the
overflow-chamber.
Fig. 3 is a section on line I-I of Fig. 2 and
Fig. 4 shows ou larger scale a modified filtering arrangement.
The petroleum is put into two reservoirs or receptacles A, A connected to each
other and mounted on a preferably annular chamber n, the petroleum in same
being maintained at a constant level by a valve m arranged in the usual manner.
The
A casing n' is connected to the chamber n, a flexible or elastic tube a being
fixed to the former and winding spirally several times round the chimney c which
is preferably provided with a jacket y serving as a guide for the tube a.
casing n¹ is preferably provided with a filter, the one shown in Fig. 1 consisting
of an open tube & having perforated plate 6' and of packing i.e. wadding cotton,
wool or other fibrous material suitable for forming the filter. The open tube b
allows the air to escape from the tube a and the parts connected therewith.
The free end of said tube a is fitted into socket c' of chamber c, which latter
is preferably closed. The quantity of oil passing through the tube a into chamber
may be regulated by a screw d. A second tube e fitted into the chamber c and
provided at its upper end with a slit or recess e¹ enters the somewhat larger
cylindrical extension of the chamber and passes through the socket e³ in the
bottom of chamber c. The lower end of tube e, through which the petroleum
from the overflow chamber c drips, is preferably pointed or cut away. A tube f
secured to the bottom of the chamber surrounds the tube e and receives the tube
leading to the gasifying retort. This tube is provided with a handle f¹ for
raising or lowering the chamber e; it will be evident that these movements may
g

page_text: also be effected by means of the customary chains, rack and pinion or in any other
suitable manner.
A ring is preferably provided on the tube g, such ring serving as a stop for the
tube and so as to limit the downward movement of the chamber.
g
A spirit receptacle k, supplying spirit to the wicks 1, is connected to the tube
by a branch pipe k, which latter may be provided with a cock or valve. The
flame produced by wicks heats the lamp in such manner that the petroleum, in
the tube g or the retort g' in communication with the burner tubes m, is gasified.
When it is desired to light the lamp, the quantity of spirit necessary for
sufficiently heating the lamp is put into the receptacle k and, after igniting the
wicks, the chamber c of tube a is lowered until same is below the level of the
petroleum in the chamber n. The petroleum after passing through the filtering
material in the casing passes through the tube a and thus finds access to the
chamber c. Immediately the chamber c is full i.e. when the petroleum has reached
the level of the slot el in the tube e, such petroleum passes down the latter and
drips from its lower end into the tube g leading to the retort.
The outlet of the petroleum may be more or less increased or decreased by
correspondingly raising or lowering the chamber c. When it is desired to
extinguish the lamp, it is only necessary to raise the chamber c above the level of
the petroleum in the chamber n. The petroleum then ceases to flow through the
tube e and the remaining petroleum in chamber e returns through tube a to the
chamber n.
Fig. 2 shows a modified construction of the overflow chamber c, the outlet
tube e in this case protruding through the extension e and being provided with a
sleeve or ring e inserted in the upper end of the tube e; the latter has a lateral
opening so that when the chamber c is full the petroleum passes through said
opening into the canal e (the latter being formed by pressing inwards part of
the sleeve e) and finally falls over the upper edge of such sleeve e', thus finding
access into the tube e and from thence to the gasifying retort.
Instead of regulating the feed of petroleum by the screw d which more or less
closes the outlet tube a, the filter may be constructed, for instance, as shown in
Fig. 4. In that case the filtering material 62 in the casing n', is placed between
the fixed perforated disc 61 of tube and a movable perforated disc b³; the latter
disc may be moved by means of the screwed collar &, it being thus possible to
compress the filtering material more or less and, therefore, to regulate the
permeability of same according to the quantity of petroleum passing, or required
to be passed, into consumption.
By means of this resisting medium i.e. by restricting the outflow of the petroleum
into the tube a owing to the compressed filtering material, it is thus rendered
possible to raise and lower the chamber c to a greater extent for regulating the
feeding of petroleum.
It will be seen from the foregoing that the supply of petroleum to the lamp
may be exactly regulated without any cocks or valves being necessary; that when
the lamp is extinguished the chamber c empties itself and, finally that the lamp is
thus always ready for lighting again without any preliminary preparations being
necessary.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. Improved petroleum feeding device for regenerative hydro-carbon lamps,
characterized by a flexible tube, one end of which is secured to the petroleum
receptacle, the other free end being provided with an overflow-chamber which
may be raised and lowered along with the tube as desired, substantially as
described and shown in the drawing.
2. In petroleum feeding devices for regenerative hydro-carbon lamps, a flexible

page_text: tube a through which the petroleum passes from the petroleum receptacles to
chamber c and after filling the latter, flows through tube e thus finding access to
the gasifying retort, substantially as described and shown.
3. In combination with a petroleum feeding device for hydro-carbon lamps, a
filter for regulating the flow of petroleum through tube a, consisting of suitable
filtering material placed between a fixed and a movable perforated disc 61 6,
substantially as described and shown in the drawing.
Dated this 7th day of January 1905
E. A. H. J. SCHÜLKE,
Per W. H. Beck,
115, Cannon Street, London, Agent.
E. A. H. J. SCHÜLKE,
Per W. H. Beck,
115, Cannon Street, London, Agent.