Improvements in Incandescent Vapour Lamps.
Year: 1896

page_text: Date of Application, 14th Dec. 1896-Accepted, 27th Mar., 1897
COMPLETE SPECIFICATION.
Improvements in Incandescent Vapour Lamps.
I, FRIEDRICH SCHUMACHER, Merchant, at Luebeck, Muehlenstrasse 33, in
Germany, 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 the present invention is a petroleum-gas incandescent lamp,
represented in the annexed drawing in half its natural size.
In substance this invention consists, as shown in Fig. 1 in a combination of a
common petroleum-burner (A) having suffered a corresponding modification for
maintaining the necessary gasification of the petroleum, with an apparatus known
as incandescent gaslight apparatus (B).
Both these chief devices are located one above the other, the common glass
cylinder (c) serving as chimney for both.
The proceeding is as follows:
A wick (b) penetrating into the petroleum-basin (a) moves in a wick-guide (d)
by means of an ordinary gear (c, c1) so as to appear at its upper end in form of a
round wick. The usual triangular opening (e) shown by the dotted lines in the
drawing is destined for allowing air to reach the inner flame-surface.
In the centre of the above described circular burner the gasifying device is fitted,
the petroleum necessary for the gasifying process being taken from the same
basin (a) and carried upwards by the wicks (f). The way these wicks take, is
such as not to interfere with the gear for wick (b) (see cross-section Fig. 3). Above
the said gear however both wicks (f) unite in a single slot or guide-tube shaped
at its end into a disk, to cause an extension of the gasifying flame, as specially shown
in Fig. 2.
The wick material as far as it enters into the enlargement (g) to be asbestos.
The flame issuing from the circular burner will heat the disk (9) transforming
into gas the petroleum imbibed by wick (f) and simultaneously cause the escape
from out of the nozzle (h) to take place under a certain pressure in consequence of
the continual gasification."
The flame of the circular burner, i.e. the flame producing the gasification is
encircled by a metal-jacket (i) admitting air through openings (k).
Connected with the jacket (i) is the Bunsen-burner (1) destined for maintaining
the incandescent light, this connection being realized by supports shaped into air
tubes m.
With a view better to support the gasifying device (9) it is moreover
supplied with a tubular guide (n) provided with corresponding holes for the apertures
of the air-tubes (m).
The gases escaping out of the nozzle (4) mix when rising with the air arriving
through the air-tubes (m) this mixture burning in the usual manner with a blue
flame above the burner-head (1) causing. the impregnated body to become incan-
descent and luminous.
The jacket (i) carries the gallery (o) on the step of which (o 1) rests the glass
tube (C) serving as a chimney, both for the Bunsen-flame of the burner (1), and
for the gasifying flame of the circular-burner (A). A further supply of combus-
tion-air especially for the incandescent-flame can enter through the holes (p).
The fact that the waste heat of the heating circular burner flame meets in the
cylinder (C) with the developed gas mixture could even render superfluous the
special inflammation for the light producing flame.