Improvements in Regenerative Gas Lamps.
Year: 1889

page_text: Date of Application, 16th May, 1889-Accepted, 6th July, 1889
Improvements in Regenerative Gas Lamps.
We WILHELM STERN and JOHANN MÜCKE both of Holzmarkt Street 2. Berlin in
the Empire of Germany Manufacturers 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 regenerative lamps it has been found that inconvenience arises from the gas
being previously heated to an excess, for by such excessive heating of the gas a.
partial decomposition thereof is induced, particles of carbon are set free and the gas
tube and the burner are choked up.
In those regenerative lamps, therefore, which work with a descending air supply
and gas supply and with a jet turned downwards and projecting outwards, the
petitioners make use of a small portion of the air introduced within the internal
chamber of the lamp to keep the gas tube cool by turning this small quantity of air off
in an ascending direction.
In the accompanying drawing a lamp made upon this plan is shewn, such lamp
being most simple in its construction and at the same time inexpensive.
Fig. 1. is a longitudinal section through the lamp.
Fig. 2. is a cross section through the line
xy.
The gas tube a is surrounded in its whole length with a tinplate jacket b, having
a continuation & below. The flame passes through a second jackets, placed around b.
The remaining parts of the lamp may be supposed to be generally known.
The atmospheric air required for combustion having been drawn in through the
chimney, enters the interior of the lamp proper through a series of apertures o¹,
placed around the lamp proper o.
Within the body of the lamp the current of air is divided. The air required to
keep up the flame descends the china casing c in order to reach the gas issuing
from the burner a¹. In combination with this gas it becomes a flame which finds its
egress in the space, between 6 and s.
A small portion of the air contained in o passes through the apertures b³ into
the portion of the casing surrounding the lower portion of the
tube a.
gas
This air enters the jacket b through the apertures 63, such jacket b surrounding
the upper part of the gas tube a. This air finds its egress through the aperture d,
which is either, from the first, reduced in size, or furnished with a regulating
apparatus, or covered in with a plate containing a number of perforations.
this way only a specified small quantity of air can constantly escape in an ascending
direction surrounding a gas tube a, thus preventing an injurious heating of the gas,
descending in a.
In
The second lot of air required for combustion is introduced into the globe g through
the apertures n.
It stands to reason that by modifying the arrangement of the various parts of the
lamp, nothing is changed in the nature of the invention, so long as the leading.
principle of construction is adhered to, which is, that the gas tube be refrigerated by
a small current of air escaping in an ascending direction.
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:
1st. In gas lamps with descending current of gas and current of air, and with a
Hame descending and projecting outward an aperture made at the opening above of
the jacket surrounding the gas tube, which aperture is suitably reduced from the first

page_text: or by means of a special regulating arrangement or adjustment, with the object of
causing a small portion of the current of air entering the lamp to ascend and in
doing so, keep the gas tube cool, as described and illustrated.
Dated this 15th day of May 1889.
CARMAN & Co.,
Agents for Applicants.