Improvements in Regenerative Gas Lamps.
Year: 1889

page_text: Date of Application, 6th June, 1889-Accepted, 13th July, 1889
COMPLETE SPECIFICATION.
Improvements in Regenerative Gas Lamps.
I, BERTHOLD ZEITSCHEL of 12, Ritter Strasse, Berlin S., Germany, manager 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:-
My improvement consists in the employment of two circular burners, burning one
inside the other and having air passages on each side of each flame. The flames burn
downwards and outwards so that the points of the flame of the inner and of the outer
burner run nearly together in consequence of which a certain amount of the air led to
the burners to effect the combustion of the gas, is compressed to a certain extent,
whereby a most complete combustion of the gas is obtained and the formation of
smoke black entirely hindered.
In order to make my invention more clear, I refer to the accompanying drawings,
in which similar letters denote similar parts throughout the several views.
Fig. 1 is a vertical section through the middle of the lamp.
Fig. 2 is a horizontal section through the lamp along the dotted line a ẞ.
n
The gas
is led by means of the supply pipe p into the chamber n which is formed by
the cover being screwed into the under part ¹. Into this under part a¹ are fixed
the tubes a a and b b b b, constituting the outer and inner burners. This chamber n is
screwed on to the cast piece y which forms the different passages for the air by means
of tubes s¹¹. The construction of this piece y will be clearly seen from fig. 2.
To the lower part of piece y is attached the ring b¹ which encircles the outer burner b.
To the under side of the bottom of the chamber is fixed another cast piece y' which has
holes ss and has on its under end the ring a¹ encircling the inner burner a. The
piece y is screwed into the cast ring of the lamp, on which ring a² are fixed the
ring R for holding the glass and the sheet metal rings a 3 which two last together
with the ring which is fixed to the piece y force the air to pass in the directions
indicated by the arrows by which means it becomes warmed before passing to the
burners. To the top part of the piece y is fixed the chimney c of the lamp.
The air enters through the holes or openings h h h of the ring ², passes
then over
the sheet metal ring and under the ring a through the passages s'. sss in the cast
piece y from whence a part of the air passes downwards between the rings a¹ and b¹
for supplying the outer ring burner, whilst a part passes on through the holes s s in
the piece y' downwards inside the tube a¹ in order to supply the inner burner a.
As will be seen, the air then passes in the direction of the arrows through the
canals z z in the cast piece y and up the chimney.
The advantage of a lamp of this construction over other intensive lamps is the fol-
lowing by means of the two circular flames burning the one inside the other as shown
in the drawing and previously described, the air which is led to the burners will
be compressed to a certain extent or rather retained or held back between the
points of the inside flame and f1 f of the outer flame and again between the
points of the other flame and the lower edge of the ring b¹ so that only as
much air as is necessary for the complete combustion of the gas will circulate
and thus the formation of smoke black in these lamps is prevented-whilst by a too
rapid circulation the gas will be imperfectly combusted and in consequence burned
extravagantly and smoke black will be formed, which soon sets on the insides of the
flues or air passages causing them to become smaller and the lamp in consequence
after having been a short time in use does not burn so well as at first.

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 :
1.) In regenerative gas lamps: the combination of two circular burners, the one
lying inside the other and the inner burner extending below the outer burner, in the
manner and for the purpose, substantially as described.
2.) In regenerative gas lamps: the combination of the tubes bbb placed in a ring
and forming the outer burner with the tubes a a a placed in a ring forming the inner
burner and lying inside and concentric with the outer burner, the tubes a a of the
inner burner having their ends projecting below the ends of the tubes forming the
outer burner, in the manner and for the purpose substantially as described.
3.) In regenerative gas lamps: the combination of the outer burner bbb with the
inner burner a a a with the cast piece y having the ring b¹ on its lower end encircling
the outer burner and having the air inlet passages $15² 3s and outlet passages 2 z
and with the piece y¹ having the ring a¹ attached to its lower end and lying between
the outer and inner burners encircling the inner burner and having air passages sss,
for the purpose and in the manner, substantially as described.
4.) In regenerative gas lamps: the combination of the outer burner bbb, inner
burner a a a with the pieces y and y' forming the passages for air inlet and outlet with
the gas supply chamber n for supplying two burners a a a and b bb, in the manner
and for the purpose, substantially as described.
Dated this 4th day of June 1889
BERTHOLD ZEITSCHEL.
By Rayner & Cassell,
37, Chancery Lane, London, Agents.