Improvements in Glow Lamps for Burning Vaporized Liquid Fuel.
Year: 1896

page_text: Date of Application, 29th June, 1896-Accepted, 12th Sept., 1896
COMPLETE SPECIFICATION.
Improvements in Glow Lamps for Burning Vaporized Liquid Fuel.
I, FERDINAND SCHUCHHARDT of 5 Brückenstrasse Berlin S.O. Germany,
Manufacturer, 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 :-
In glow lamps for liquid fuel such as spirits, petroleum, lygroin, benzin and the
like the device for evaporating the principal and auxiliary fuel in the form shown
in Patent Specification No. 12,771 of 1893 might be attempted to be improved by
producing the evaporation in coiled pipes placed one inside the other and both
heated by the auxiliary flame.
My invention consists in a new or improved device whereby the gasification is
produced in such manner and causes such processes in the lamp that perfect
gasification ensues while at the same time a quiet burning of the lamp is furthered.
The device is shown by the diagram Fig. 1, and the detail view Fig. 2.
From the liquid container a an upright pipe 6 is led wherein the liquid is to be
heated and evaporated in order then to be carried off to the burner. d is another
separate upright pipe from the container a arranged by the side of the pipe b and
serving to feed the heating flame; this pipe d is carried up to about the top of the
pipe b and is then bent and carried down and bent up again with its mouth directed
upwardly; it may suitably be provided with an enlarged part d' forming a
vaporising chamber for the liquid that is to sustain the heating flame.
When a preheating of the liquid in the pipe d' has been effected by means of a
heating flame below the mouth d² of pipe d and when the first vapours issuing from
the mouth d have been ignited by that flame the evaporation goes on automatically.
For the mouth d is so placed that the heating flame plays on the pipe b as well as
on the gasifier d' and the parts are so proportioned that the following processes
take place. When in the first instance the liquid stands as high in the pipes b and d
as in the container a, then evaporation will take place in both pipes owing to the
flame at d², so that a great depression of the liquid level takes place. Gradually
however equilibrium is restored in b and d determined on the one hand by the
vapour pressure and on the other hand by the pressure on the liquid for instance
the hydrostatic pressure due to the liquid fuel in the upper container.
proportious are such that in continuous regular work the liquid level remains low
in 6 so that that pipe is almost filled with vapour, which becomes highly superheated
by the flame at d constantly playing on it. But there is so much liquid in the
pipe d or vaporising chamber d' that the working is regularly maintained, so that
the heating flame is fully supplied without interruption. As the whole of the
pipe b contains only gas and no liquid, no particles of the latter can by any means
be carried into the lighting flame.
The
In order that the regular evaporation may be continuously maintained and as it
is rather difficult to hit upon the right proportions at the outset, I provide in the
upper part of the ascending pipe d above vaporising chamber da set screw c.
By exact adjustment of this screw, which is done once and for all in the factory by
actual trial the supply to the heating flame is determined' and therewith also its size
and power and thereby the degree of gasification in the pipe b and the amount of
depression of the liquid in it. These proportions having been once ascertained the
screw c has not to be adiusted afterwards.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
-claim is.
A device on glow lamps for liquid fuel consisting of a pipe d proceeding from
the liquid container a and provided with an enlargement or vaporising chamber d²,
said pipe being so led against the gasifier b that the flame issuing from the pipe d
by preference, regulated by a set screw c plays upon the vaporising chamber d¹
& upon the gasifier b substantially as described and shown and for the purposes set
forth.
Dated this 29th day of June 1896.
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.