improvement in Acetylene-lamps
Year: 1898

page_text: Date of Application, 1st July, 1898
Otak Od 1000 Manoated
2nd Dec
1808
improvement in Acetylene-lamps 101 DAY CONT
We, HEINRICH FRIEDRICHI AREND SCHRÖDER, Merchant, at Hamburg, Kleine
Seilerstrasse 4, and MAX JULIUS NEHEMIAS, Merchant, at Altona, near Hamburg,
Poststrasse 4, in Germany, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to improvements in acetylene-lamps for bicycles and the
advantages of this new lamp, as compared with others, are: little weight, cleanli-
ness and its safety. The cyclist can always carry it along with him, ready for use.
On turning the cock it may be lit at once. In consequence of its practical arrange-
ment no bad smell is produced, either by the acetylene, or by the carbide of
calcium, either burning or not.
The lamp, illustrated in the accompanying drawing, consists, essentially, of an
outer cyclinder a, the cover of which, a', can be hermetically closed by means of a
binding-screw and a disk of indiarubber. The cover of the cylinder is fitted with
a safety-valve b, a tube c, fitted on the upper end a' of the cylinder and penetrating
it, leading to the burner c¹. This conducting-pipe is provided with a cock d, allow-
ing of the lighting and extinguishing of the lamp. Within the cylinder a there is
located another cylinder e, which serves as a floater. It dips with its lower part in
water, its interior being connected by means of an indiarubber tube f with the con-
ducting-pipe. As long as the cock remains closed, the cylinder, carried by the air
it contains, will float on the water. The carbide of calcium is introduced into the
cylinder e and a thick felt-disk h applied in order to prevent the water from
penetrating too quickly and, in order to still further prevent this penetration, the
lower closing cover of the floating cylinder, i, is fitted with exceedingly small
admission-holes . In this condition the lamp is ready for use On opening the
cock d, the air will now escape through f and, traversing the conducting-tube and
the burner, causes the cylinder to dip into the water, the carbide thus becoming
moistened. In that very same moment the gas will begin to develop and the lamp
may be lit. If there is an excess in the developing process, the floating cylinder
is raised, when the water will be expelled, whereby the gas-developing will be
interrupted until by the diminution of the pressure of the gas in e the floater will
sink anew. This process will continually be repeated until all the carbide is con-
sumed. The quantity of carbide introduced depends on the length of time the
lamp is destined to burn. In case the pressure in e becomes too great, the gas can
escape into the open air through the water, passing the outer cylinder and from
thence the safety-valve and then into the air, so that a bursting of the apparatus
is impossible. If the cyclist does not want to carry along with him any water
during daytime, or, if there is too much water in the apparatus, he may let it off
through the discharge-cock j.
By the loosely floating developing cylinder e, in connection with the elastic
suspension of the lamp, a steady burning flame is obtained and a safe lamp is
created, owing to the described arrangement in connection with the safety-valve,

page_text: suffering the gas under too high a pressure to escape into the open air. The
reflector with the burner is fitted on the cylinder a and with the elastic device k
also fixed on a, the lamp is suspended.
Dated. 29th day of June 1898
CARL O. LANGE,
Agent for Applicants.
We, HEINRICH FRIEDRICH AREND SCHRÖDER, Merchant, at Hamburg, Kleine
Seilerstrasse 4, and MAX JULIUS NEHEMIAS, Merchant, at Altona, near Hamburg,
Poststrasse 4, 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:-
Our invention relates to improvements in acetylene-lamps for bicycles and the
advantages of this new lamp, as compared with others, are: little weight, cleanli-
ness and its safety. The cyclist can always carry along with him, ready for use.
On turning the cock it may be lit at once. In consequence of its practical arrange-
ment no bad smell is produced, either by the acetylene, or by the carbide of
calcium, either burning or not.
We attain these objects by the mechanism illustrated in the drawings left with
Provisional Specification and carried out as described and claimed hereinafter.
The lamp consists, essentially, of an outer cylinder a, the cover of which, a¹, can
be hermetically closed by means of a binding-screw and a disk of indiarubber.
The cover of the cylinder is fitted with a safety-valve b, a tube e, fitted on the upper
end of the cylinder and penetrating it, leading to the burner ¹. This conducting-
pipe is provided with a cock d, allowing of the lighting and extinguishing of the
lamp. Within the cylinder a there is located another cylinder e, which serves as
a floater. It dips with its lower part in water, its interior being connected by
means of an indiarubber tube f with the conducting-pipe. As long as the cock
remains closed, the cylinder, carried by the air it contains, will float on the water.
The carbide of calcium is introduced into the cylinder e and a thick felt-disk h
applied in order to prevent the water from penetrating too quickly and, in order
to still further prevent this penetration, the lower closing cover of the floating
cylinder e, is fitted with exceedingly small admission-holes . In this condition
the lamp is ready for use. On opening the cock d, the air will now escape through f
and, traversing the conducting-tube and the burner, causes the cylinder to dip into
the water, the carbide thus becoming moistened. In that very same moment the
gas will begin to develop and the lamp may be lit. If there is an excess in the
developing process, the floating cylinder is raised, and in the same time the water
will be expelled, whereby the gas-developing will be interrupted until by the
diminution of the pressure of the gas in the floater will sink anew. This
process will continually be repeated until all the carbide is consumed. The quantity
of carbide introduced depends on the length of time the lamp is destined to burn.
In case the pressure in e becomes too great, the gas can escape through the thick
felt-disk h and the apertures and through the water into the outer cylinder and
from thence passing the safety-valve into the air, so that a bursting of the
apparatus is impossible. If the cyclist does not want to carry along with him any
water during daytime, or, if there is too much water in the apparatus, he may
let it off through the discharge-cock j.

page_text: By the loosely floating developing cylinder e, in connection with the elastic
suspension of the lamp, a steady burning flame is obtained and a safe lamp is
created, owing to the described arrangement in connection with the safety-valve,
suffering the gas under too high a pressure to escape into the open air. The
reflector with the burner is fitted on the cylinder a and with the elastic device k
also fixed on a, the lamp is suspended.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
An acetylene-lamp for bicycles, consisting of a receptacle a, (carrying a burner
and a reflector), to take in water, wherein the acetylene developer e having the
shape of a hollow cylinder, provided beneath with fine admission-holes, is floating,
gradually dipping deeper and deeper, consuming carbide of calcium in proportion
to the gas burned only, the carbide of calcium resting in the interior of the floating
cylinder, on a layer of a substance through which water passes with difficulty; thus
causing the carbide to become slowly moistened, in order to prevent, as far as
possible, any excess in the generating of gas in consequence of the unavoidable
shaking on the road and to obtain a steady flame, in connection with a valve
destined for letting escape into the open air any excess of gas under too high
pressure generated in the bell.
Dated. Hambure. 19th day of October 1898.
CARL O. LANGE,
Agent for Applicants.